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Italian National Agency for New Technologies,

Energy and Sustainable Economic Development

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Procurement Technical Specificationsfor the Agreement Of Collaboration F4E-ENEA for the

Joint Implementation of the Procurement Arrangement for the Poloidal Fields and Fast Plasma Position Control

Coils Power Supplies for the Satellite Tokamak Programme

ENEA ID:SPT-TFJT60SCM-

PS-01Page: 1/79

JT-60SA DMS:BA_D_2276VA-----

Rev. 226 Jan 2012

5

ENEA ID SPT-TFJT60SCM-PS-01 ENEA Classification D

Title:

Procurement Technical Specifications for the Agreement Of Collaboration F4E-ENEA for the Joint Implementation of the Procurement

Arrangement for the Poloidal Fields and Fast Plasma Position Control Coils Power Supplies for the Satellite Tokamak Programme

Contract or Project Details

This document is issued for the execution of the Agreement of Collaboration (AoC) between Fusion for Energy (F4E) and ENEA for the joint implementation of the Procurement Arrangement (PA) for the Poloidal Fields (PF) and Fast Plasma Position Control Coils (FPPC) Power Supplies for the Satellite Tokamak Programme.

JT-60SA DMS BA_D_--------_2276VA

Author(s) & Contributor(s)

Starace Fabio Coletti Roberto

UT-FUSINGVia E. Fermi, 4500044 – Frascati (RM), ItalyTel. +39 06 94005276Fax +39 06 94005734E-mail: [email protected]

UT-FUSIMPVia E. Fermi, 4500044 – Frascati (RM), ItalyTel. +39 06 94005212Fax +39 06 94005524E-mail: [email protected]

Distribution List(Registered)

Internal ENEA L. Di Pace, C. Nardi, A. Lampasi, P. Costa

F4E, JAEA

AbstractThis document briefly describes the procedure identified by ENEA for the Agreement of Collaboration (AoC) Plan of the JT-60SA Poloidal Fields (CS1-CS4, EF1 and EF6) and Fast Plasma Position Control Coils (FPPC1 and FPPC2) power supply systems.

1 28 Nov 2011 Fabio StaraceRoberto Coletti Luigi Di Pace Roberto Coletti

Rev. Date Issued by Reviewed by Approved by

mailto:[email protected]

mailto:[email protected]



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TABLE OF CONTENTS

TERMS AND DEFINITIONS_____________________________________________________________________6

ANNEXES___________________________________________________________________________________8

REFERENCE DOCUMENTS____________________________________________________________________8

REFERENCE SCHEMES_______________________________________________________________________9

1. INTRODUCTION___________________________________________________________________________10

2. SCOPE OF THE PROCUREMENT_______________________________________________________________10

2.1. Main deliverables____________________________________________________________________102.2. Warranty__________________________________________________________________________122.3. Spares____________________________________________________________________________122.4. Items not included in the procurement____________________________________________________12

3. DESCRIPTION OF THE JT-60SA EXPERIMENT______________________________________________________12

3.1. General description__________________________________________________________________123.2. The superconducting magnets_________________________________________________________123.3. Magnets fast discharge and machine protection sequences___________________________________123.4. The magnet power supply system_______________________________________________________123.5. The JT60-SA general layout___________________________________________________________133.6. The auxiliary system_________________________________________________________________13

3.6.1. The low voltage distribution system_________________________________________________133.6.2. The water cooling system_________________________________________________________13

3.7. The JT-60SA Control System: general description__________________________________________13

4. TECHNICAL REQUIREMENTS_________________________________________________________________13

4.1. Coil power supplies general description__________________________________________________134.1.1. Existing AC power system________________________________________________________134.1.2. 18kV Network Main Characteristics ________________________________________________174.1.3. 11 kV Network main characteristics (out of scope)______________________________________18

4.2. General requirements________________________________________________________________194.2.1. Design and construction__________________________________________________________204.2.2. Redundancy and safety factors_____________________________________________________204.2.3. Availability_____________________________________________________________________194.2.4. Transmission and insulation of signals_______________________________________________204.2.5. Combustible materials____________________________________________________________214.2.6. Cleaning and painting____________________________________________________________214.2.7. Audible noise___________________________________________________________________214.2.8. Use of oil______________________________________________________________________214.2.9. Use of ISO metric threads_________________________________________________________214.2.10. Anti-condensation devices________________________________________________________214.2.11. Fire and explosion protection______________________________________________________214.2.12. Access to equipments____________________________________________________________224.2.13. Grounding_____________________________________________________________________224.2.14. Resistors______________________________________________________________________224.2.15. Reactors______________________________________________________________________224.2.16. Capacitors_____________________________________________________________________234.2.17. Cables and fibres optics__________________________________________________________234.2.18. Demineralised water cooling system_________________________________________________234.2.19. Cubicles IP codes_______________________________________________________________25



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4.2.20. Local control cubicles____________________________________________________________264.2.21. LV AC/DC Connections__________________________________________________________274.2.22. Crowbar units__________________________________________________________________304.2.23. Disconnectors__________________________________________________________________314.2.24. Compressed air_________________________________________________________________314.2.25. Measurement transducers________________________________________________________31

4.3. TF coil power supply (out of scope)_____________________________________________________324.4. PF coil pwer supplies (PFC PS)________________________________________________________32

4.4.1. Reference schemes_____________________________________________________________324.4.2. Performances__________________________________________________________________344.4.3. Operational requirement for PFC PS units____________________________________________354.4.3.2 EF1 and EF6 PFC PS converters operating mode _____________________________________444.4.4. Thyrisors cubicle design __________________________________________________________444.4.5. Transformers___________________________________________________________________44

4.5. FPPC coils power supplies____________________________________________________________454.5.1. Performance and operational requirement____________________________________________464.5.2. Thyristor cubicle design__________________________________________________________474.5.3. Transformers___________________________________________________________________47

4.6. PS interfaces requirements____________________________________________________________484.6.1. Interfaces with other units of the dc power circuit_______________________________________494.6.2. Interfaces with APS low voltage distribution system_____________________________________494.6.3. Interfaces with the compressed air distribution system___________________________________504.6.4. Interfaces with the site water cooling system__________________________________________504.6.5. Interfaces with the grounding network_______________________________________________514.6.6. Interfaces with the JT-60SA Control and Protection System______________________________51

4.7. Thyristors converter regulation / Control and protection system________________________________594.7.1. Thyristor convertor regulator_______________________________________________________594.7.2. Control and protection system_____________________________________________________60

4.8. Layout and installation requirements_____________________________________________________61

5. TESTING AND APPROVAL REQUIREMENTS________________________________________________________62

5.1. General requirements________________________________________________________________625.2. List of Factory Tests_________________________________________________________________635.3. Factory Test of Power Supplies Units____________________________________________________63

5.3.1. PS Thyristors Cubicle____________________________________________________________645.3.2. Crowbar Switch_________________________________________________________________655.3.3. Reactor cubicle_________________________________________________________________665.3.4. Visual Inspection________________________________________________________________675.3.5. Current / Voltage transducers______________________________________________________675.3.6. Control and regulation cubicle______________________________________________________675.3.7. Electrical and fiber optic cables_____________________________________________________685.3.8. Transformers___________________________________________________________________68

5.4. Site Acceptance Tests________________________________________________________________68

6. CODES AND STANDARDS____________________________________________________________________69

7. PACKAGING AND TRANSPORTATION REQUIREMENTS________________________________________________69

7.1. Packaging_________________________________________________________________________697.2. Inspection of the packaging prior the shipment_____________________________________________697.3. Handling and storage_________________________________________________________________697.4. Delivery state_______________________________________________________________________707.5. Transports_________________________________________________________________________707.6. Appearance check of the packaging at the port of entry______________________________________707.7. Inspection of the components at arrival in Naka site_________________________________________70

8. IDENTIFICATION TRACEABILITY REQUIREMENT_____________________________________________________70

8.1. Identification________________________________________________________________________708.2. Traceability________________________________________________________________________71

9. DOCUMENTATION TO BE SUPPLIED_____________________________________________________________71



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9.1. Quality Plan________________________________________________________________________719.2. Progress reports____________________________________________________________________719.3. Technical documentation______________________________________________________________72

9.3.1. First Design Report______________________________________________________________729.3.2. Factory Test Plan and Procedures__________________________________________________739.3.3. Site Installation Plan_____________________________________________________________739.3.4. Site Commissioning Program______________________________________________________739.3.5. Tests reports___________________________________________________________________739.3.6. Operation and Maintenance Manual_________________________________________________749.3.7. Specifications for non standard component___________________________________________749.3.8. Block and functional Scheme of the control system_____________________________________749.3.9. Final Design Report_____________________________________________________________749.3.10. Drawings______________________________________________________________________749.3.11. Source codes__________________________________________________________________74

10. TRAINING_______________________________________________________________________________75

11. SITE CONDITIONS_________________________________________________________________________75

11.1. Ambient conditions__________________________________________________________________7511.2. Seismic event______________________________________________________________________7611.3. The low voltage distribution system______________________________________________________7611.4. The earthing / grounding network_______________________________________________________7611.5. Facilities in the PS buildings___________________________________________________________77

11.5.1. Site water cooling systems________________________________________________________7711.5.2. Air conditioning system___________________________________________________________7711.5.3. Compressed air system__________________________________________________________78

12. QUALITY ASSURANCE DOCUMENTS_____________________________________________________________78



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TERMS AND DEFINITIONS

Agreement of Collaboration (AoC)

Framework between F4E and VC-DI to reinsure its commitments towards JAEA under the Procurement Arrangements.

APS Auxiliary Power SuppliesBA Agreement Broader Approach Agreement between Europe and Japan for activities in the

Field of Fusion Energy ResearchCB Crow BarCBMS Crow Bar Mechanical switchCEA Commissariat à l’Energie AtomiqueCSx Central Solenoid coil number x. Makes reference to poloidal field coil CSCustomer The legal entity responsible for handling financially and legally the procurement

of its in-kind contributions.DDP Detailed Design PhaseEFx Equilibrium Field coil number x. Makes reference to poloidal field coil EFENEA Italian National Agency for New Technologies, Energy and the Sustainable

Economic DevelopmentFPPC PS Fast Plasma Position Control Coils Power SupplyFusion for Energy or F4E

European Joint Undertaking for ITER and the Development of Fusion Energy. Fusion for Energy forms integral part of the JT-60SA Project EU Home Team and ensures the coordination of implementation of the Procurement Arrangement and its interfaces with other procurement arrangements in BA Activities.

GPS JT-60SA Global Protection SystemIA Implementing AgencyIR Interface ReactorJAEA Japan Atomic Energy AgencyJAHT JT-60SA Japanese Home TeamJT - 60SA The Satellite Tokamak JT-60 Super Advanced Tokamak: the construction and

exploitation of which shall be conducted under the STP and the Japanese National Program

JT-60SA IPT JT-60SA Integrated Project team, the EU Home Team and the JA Home TeamEUHT European Home Team for JT-60SA Project in the forms of a collaboration

among Fusion for Energy and all the Customers to the Broader Approach Activities

LCC Local Control CubiclePFC PS Poloidal Field Coil Power Supply. Summarises both EFx and CSx PSPID Plant Integration DocumentPL The Project Leader of STPPM Project Manager. There are two PM’s, one of the EUHT one of JAHTPoE Port of Entry in JapanProcurement Arrangement (PA)

Framework between F4E and JAEA for the main governing, financial and collaborative requirements for the supply of a procurement package.

PS SC Power Supply Supervising ComputerIPS PS SC Internal Protection SystemQDC Quench Detection CircuitQPC Quench Protection CircuitSCSDAS JT-60SA Supervisory Control System and Data Acquisition SystemGPS JT-60SA Global Protection SystemSIS JT-60SA Safety Interlock System



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Site The location where the system object of these technical specifications will be installed: Naka, Japan

SNU Switching Network UnitSTP Satellite Tokamak Programme: one of the three projects in the broader

approach activitiesIndustrial Supplier The operator that provides supplies, services or works described in the technical

specification. TFC Toroidal Field Coil. Makes reference to toroidal field coilTFC PS Toroidal Field Coil Power SupplyVoluntary Contributors Designated Institution (VC-DI)

The Countries who make voluntary contributions to EURATOM for the implementation of the Broader Approach Activities



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ANNEXES

Annex 1 Plant Integration Document PID BA_D_222UJY

Annex 2 Services at Naka for Installation BA_D_22KKGE

Annex 3 Regulation at Naka Site for Installation BA_D_22L9VF

Annex 4 Power Supplies Installation Works at JT60-SA Site work in progressBA_D_22RGEC

Annex 5 Definition of Port of Entry in Japan BA_D_22FTCX

REFERENCE DOCUMENTS

In case of conflict between the content of References and this document, the prescriptions to be followed are those of this document.

Reference 1 Industrial Supplier Quality Assurance Management Specifications BA_D_229GBU (ENEA_ID: TBDSPT-JT60-PS-01)

Reference 2 Withstand test voltage to ground BA_D_228FVF

Reference 3 Recovery Sequence in case of Fault BA_D_224GM4

Reference 4 Detailed information about AC power system in JT-60SA BA_D_224HLU

Reference 5 : JT-60SA Power Supply, Summary of Signals to be exchanged among each components and Magnet PS Supervising Controller BA _D_224L2W

Reference 6: Address map of RM for PS control system BA_D_229P2K

https://users.jt60sa.org/?uid=229P2K

https://users.jt60sa.org/?uid=224L2W

https://users.jt60sa.org/?uid=224HLU

https://users.jt60sa.org/?uid=224GM4&version=v2.2&action=get_document

https://users.jt60sa.org/?uid=228FVF

https://users.jt60sa.org/?uid=229GBU&version=v1.0&action=get_document

https://users.jt60sa.org/?uid=22FTCX&action=get_document

https://users.jt60sa.org/?uid=22RGEC

https://users.jt60sa.org/?uid=22L9VF

https://users.jt60sa.org/?uid=22KKGE

https://users.jt60sa.org/?uid=222UJY&version=v2.9&action=get_document



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REFERENCE SCHEMESDWG,1 Single lines schemes

DWG 1.a, JT60SA-G-000272-0_01. Date 03 Dec 2009.Title: Block diagram of AC power supply (TR 1)DWG 1.b, JT60SA-G-000273-0_01. Date 03 Dec 2009. Title: Block diagram of AC power supply (TR 22)DWG 1.c, JT60SA-G-000274-0_01. Date 03 Dec 2009. Title : Block diagram of AC power supply (TR 24)DWG 1.d, JT60SA-G-000275-0_01. Date 03 Dec 2009. Title : Block diagram of AC power supply (TR 23)DWG 1.e, JT60SA-G-000276-0_01 Date 03Dec 2009. Title: Block diagram of AC power supply

(Switchgear network)(Option 1)

DWG 2, ENEA-ING.A.JT.006/L-46_01. Date 19 October 0916 November 2011. Title: Layout power supply main components Rectifier Building 1st Floor

DWG 3, ENEA-ING. A.JT.009/L-34_01 04 Date: 22 October 0916 November 2011,. Title: Devices in Power Supplies areas Rectifier Building 2nd Floor and Transformers yard.

DWG 54, ENEA-ING. A.JT.0013/L-23_01, Date: 23 10 November 092011. Title: Layout of FPCC.1, FPPC2 PSs and PS-CS.2, and PS-CS3 PSs area in VCB Room. AC bus duct and DC wiring diagram

DWG 6 5 ENEA-ING. A.JT.009-02/L-24_02. Date: 22 October 0916 November 2011. Title: Devices in Power Supplies areas . Rectifier Building 2nd Floor and Transformers yard. PS-EF and PS-CS1,4 area

DWG 7 6 ENEA-ING. A.JT.0010/L-34_01. Date: 16 December 0910 November 2011. Title: Layout power supply main components .Load capability of Rectifier Building 2nd Floor

DWG 9 JT60SA-G-000286-01_01, Omissis (out of scope)

DWG 10 7 JT60SA-G-000260-2,3 201. date: 31 September 0914 November 2011. Date : The drawing of cable box in JT-60 T-PS diode Rectifier

DWG 11 8 JT60SA-G-000216-23_01. Date. 29 May 0908 August 2011. Title: Cross section of ventilation system in rectifier Building (First floor = Ground floor)

DWG 12 9 JT60SA-G-000217-0_01_Date: 02 June 09. Title : Cross section of Ventilation system of Rectifier Building 2nd Floor

DWG 14 10 ENEA-ING. A.JT.0012/L-3_01. Date: 23 November 09JT60SA-G-000244-3. Date: 14 November 2011. Title: North Wall Opening of JT-60 Rectifier Building. (CS2/CS3 and FPCC1/FPCC2-PSs)

DWG 15 11 ENEA-ING. A.JT.0014/L-0_01. Date: 10 July 09. Title: Layout of Transformers T-CS2 and T-CS3 areaJT60SA-G-000221-1. Date: 11 September 2009. Title : The Detail drawing in the transformer installation Area (V8-V12)

DWG. 117 2 JT60SA-G-000257-0_01. Date: 21 July 09. Title: Connecting Diagram of JT-60 T-PS Diode Rectifier

DWG 18 13 ENEA-ING.A.J.0023/L-01_01. Date 18 December 200910 November 2011. Title: Load capability of Rectifier building1st Floor

https://idm.jt60sa.org/users/idm/ast/folderTree/get_document?document_id=AST_D_2239YL&version=v1.0



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1. INTRODUCTION

JT-60SA is one project in the frame of the Broader Approach (BA) Agreement between Europe and Japan; BA is a program of complementary facilities to be realized in parallel to ITER to accelerate the development of magnetic fusion. JT60-SA will be a Tokamak, to be installed in Naka, Japan, with superconducting TF and PF magnets capable of confining high temperature plasmas (current up to 5.5 MA) for 100 s flat top plasma current, with heating and current drive power up to 41 MW.The mission of the JT-60SA project is to contribute to the early realization of fusion energy by its exploitation to support the exploitation of ITER and research towards DEMO, by addressing key physics issues for ITER and DEMO.

2. SCOPE OF THE PROCUREMENT

This technical specification is a detailed description of the ENEA procurement to provide new power supplies for part of the JT-60SA Poloidal Field Coils Power Supply (including the Central Solenoid Coils CS1-CS4 and the Equilibrium Field Coils, EF1 and EF6 PSs) and the FPPC (fast plasma position control coils) PSs.

Referring to all components included in Table 2.1-1, the scope of this procurement is:- draft and detailed Design;- manufacturing;- factory testing;- packaging and transportation to Port of Entry in Japan. JAEA shall be responsible of clearance

of import formalities and transportation from Port of Entry to Naka Site. JAEA shall ensure availability of all indoor/outdoor necessary areas, including temporary storage, at Site and shall also be in charge of handling components in the dedicated storage areas. JAEA shall provide needed utilities during start-up and commissioning;

- installation at Naka Site;- commissioning and final acceptance testing at Naka Site of the provided PF and FPPC coils power

supplies (including their Crowbar) with their transformers in case of CS2 and CS3 superconducting coils, and FPPC coils PSs.

The total procurement is composed of 8 PS (power supplies) and 4 transformers with the rating and features specified in detail in Section 4.

- installations is a option for all power supplies .

If the option of installation is not activated, the supplier shall transfer all document necessary to realise implantation and installation by any other company in good conditions and time schedule. Documents shall be self-consistent

[2.1.] Main deliverables

Main components to be delivered by the Industrial Supplier are reported in Table 2.1-1

Table 2.1-1 - Main components to be delivered for PFC and FPPC PS



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PSThyristors cubicle / fences (*)

Control and protection

system

Inter-phase

inductancesCrowbar

type(***) Transf.

Maintenance tools

AC grounding

switch

(****)

DC disconnectors

(****)

Ref. Section

CS1 PS B 4.4

CS2 PS B 4.4

CS3 PS B 4.4

CS4 PS B 4.4

EF1 PS B 4.4

EF6 PS B 4.4

FPPC

upper

PS

B (**)

4.5

FPPC

lower PS

B (**)

4.5

(*)ref. Section 4.2.19(**) The PS is fed by two transformers to allow a 12 pulses operation also during the circulating current phase.(***) Bidirectional(****) The AC grounding switch is manually operated while the DC disconnectors can be remotely operated,too.

In addition to the main components of Tab. 2.1-1, the Supply shall also include the following items:

documentation of the components object of the Supply (ref Section 9 );

manufacturing of the components;

a basic set of spare parts (ref section 2.3);

Factory Tests (ref. Section 5.3);

cleaning and packaging of the Supply;

delivery components to Port of Entry in Japan

handling from storage areas to the final location, assembly, installation and commissioning of all components at Naka Site;

Site Acceptance Tests at Naka Site (ref Section 5-4);

any set of special handling tools and appliances that may be necessary to handle the equipment safely and conveniently during its receipt and assembly at Site. These will remain property of JT-60SA;

any special tool and special equipment necessary for the operation and maintenance of the equipments included in the Supply. These will remain the property of the JT-60SA;

any set of testing tools and instruments need to commission and test the system. These will remain property of the Industrial Supplier;

training of the operating staff (ref. Section 10);



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All the installation, testing and commissioning activities in Site shall be performed according to the Site Work Regulations described in Annex 3 and Annex 4.

2.1.[2.2.] Warranty

All components shall have a warranty for defects in the manufacture for a period of two years from the acceptance of the components.The warranty is limited to the direct costs of repair or remanufacturing of the components. Any other warranty is excluded.Some extensions could be required for spare parts as indicated in Section 2.3.

2.2.[2.3.] SparesThe Industrial Supplier shall provide within this procurement a basic set of spare parts at least composed of:

One thyristor arm for each type of thyristor converter (including gate firing)

One semi-conductor stack for each type of Crowbar units (including Break Over Diode – BOD – and gate firing)

A set of sacrificial contact for each type of Crowbar units mechanical bypass

During the Detailed Design Phase, the Industrial Supplier shall provide the list of recommended spares that could be ordered by JAEA to cover the specified operational life of the equipment, beyond the warranty period. The list shall include the individual prices and the indication of period of validity.

The preparation of the lists described above will not relieve the Industrial Supplier from their obligation to cover replacement of any parts damaged during installation and site testing.

Fusion for Energy can request an extension of the standard commercial warranty or supply of spare parts on the basis of the list provided by the Industrial Supplier. This option can be exercised, at the price proposed in the list, till the delivery of the Supply; the spare list can be altered in order to purchase fewer or more parts with no cost variation.

2.3.[2.4.] Items not included in the procurement

In general, the following equipment and components, not belonging to the Contract, will be interfaced with each one of the CS1-CS4, EF1, EF6 and FPPC PS circuits, as specified in Section 4.6:

DC busbars for all PSs

AC HV cables installation/modifications on converter transformers primary side

AC HV circuit breaker including protection relays

AC LV cables on transformers secondary/tertiary side(s) for CS1, CS4, EF1, EF6 PSs converters (see ref Section 4.2.21)

ground grid

Converter transformers for EF1, EF6, CS1 and CS4 PSs

AC / DC low voltage auxiliary power supplies (including UPS and Emergency generators)

Demineralised and/or raw water cooling system

Compressed air distribution system

JT-60SA Supervisory Central Ccontrol System and Data Acquisition System (SCSDAS)



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JT-60SA Global Protection System

the JT-60SA Safety Interlock system (SIS)

Transportation from Port of Entry in Japan to Naka Site

The following plants/equipments and functional blocks are not included in the Contract and shall be provided by JAEA:

the infrastructures needed to accommodate all power supply equipments. In addition to the buildings where the power supply equipments and the relevant control systems will be located, the JAEA will provide the major civil works needed for the proper installation of the equipments

the fire detection and protection systems, inside the PS buildings, semi-outdoor and outdoor

the interlock key system and access control (if needed)

the provisions for the protection of the equipments from lightning

services to the Industrial Supplier’s staff as described in Annex 2 and Annex 4

3. DESCRIPTION OF THE JT-60SA EXPERIMENT

This chapter contains the reference to sections of the JT-60SA Plant Integration Document (PID), which describes the experiment and the main requirements of the machine components. PID might be updated during the contract period, the Customer will inform the Industrial Supplier about changes that have relevance for this procurement. An agreement between Customer and Industrial Supplier will be taken on how to cope with them.

3.1. General description

Sections 1.5 and 1.7 of the PID describe the daily/annual operating scenario and the experiment operational states, respectively.

Section 1 and 1.1 of the PID report the general description of the machine and its main parameters.

The description of the seismic events is given in section 1.8.3 of the PID.

The reference general schedule is shown in section 1.15 of the PID.

The magnets fast discharge and the machine protection sequences are described in sections 1.8.7 and 1.8.9 of the PID respectively.

The general information of the Central Solenoid (CS) and Equilibrium Field (EF) superconducting magnets is given in sections 2.2 and 2.3 of the PID respectively.

The JT-60SA Site and buildings overall description is in section 2.22 of the PID.

The JT-60SA auxiliary power systems are described in section 2.21 of the PID

The JT-60SA water cooling system is described in section 2.13 of the PID

The architecture and features of the JT-60SA supervisory control system and data acquisition system (SCSDAS) is described in section 2.17 of the PID.

3.2. The superconducting magnets



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The general information of the Central Solenoid (CS) and Equilibrium Field (EF) magnet system is given in sections 2.2 and 2.3 of the PID respectively.

3.3. Magnets fast discharge and machine protection sequences

The magnets fast discharge and the machine protection sequences are described in sections 1.8.7 and 1.9 of the PID respectively.

3.4. The magnet power supply systemThe general magnet power supply system, including the PSs object of these Technical Specfications (TS), is described in section 2.7 of the PID .Relevant main characteristics are summarised in Section 4.1.

3.5. The JT60-SA general layoutThe JT-60SA Site and buildings overall description is in section 2.22 of the PID.

3.6. The auxiliary system3.6.1.The low voltage distribution system

The JT-60SA auxiliary power systems are described in section 2.21 of the PID.Interfaces between the JT-60SA low voltage distribution system and the PSs object of these TS, are reported in section 4.6.2.

3.6.2.The water cooling system

The JT-60SA main water cooling system is described in section 2.13 of the PID. In particular a demineralised water cooling system for PS components shall be made available by JAEA only for circuits including Aluminium components.Interfaces between the JT-60SA water cooling system and the PSs object of these TS, are reported in section 4.6.4.

3.7. The JT-60SA Control System: general description

The architecture and features of the JT-60SA supervisory control system and data acquisition system (SCSDAS) are described in section 2.17 of the PID.

The JT-60SA control system will also include a system for handling all the protection signals from the equipment and distribute the protection commands, called Global Protection System (GPS) and a system for managing the Safety Interlock Signals (SIS). The detailed design of SCSDAS, GPS and SIS will be completely fixed during the Detailed Design Phase (DDP).Interfaces between the JT-60SA SCSDAS and the PSs object of these TS, are reported in section 4.6.6.



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4. TECHNICAL REQUIREMENTS

4.1. Coil power supplies general description4.1.1. Existing AC power system

Figures from 4.1.1-1 to 4.1.1-4 show the diagrams of JT-60SA AC power supply system at Naka fusion Institute. For more details see ref. DWG1 in Reference Schemes.Basically, the AC power supply system will be reused as far as possible. New power supply systems will be designed and manufactured to feed superconducting TF, and PF coils. TFC PS will be fed by the existing 11kV, 50Hz network, while PFC and FPPC PSs will be fed by the existing H-MG through the 18kV network.

20MW

PNBI

Power Substation

30MVA66kV/6.6kV

SC, FilterSC, FilterSC, Filter

TF-PS

Utility line

FPPC(upper and lower)

ECRF

Tr-3

66kV/11kV20MVA

80MVA275kV/66kV

66kV/11kV25MVA

H-MG 18kV/400MVA

~

・・・EF1

Tr-2275kV Power Grid

66kV/11kV31.5MVA

T-MG4GJ

18kV/215MVA

Tr-1 198MVA(38s)275kV/18kV

40MW

NNBI

CS1

PNBI

28MW

SC, Filter

40MW

110MVA275kV / 66kV

2.6GJ

PF-PS

Figures 4.1.1-2 to 4.1.1-4 show simplified general diagrams of these AC power system (cf refer. scheme DWG.1).

Fig 4.1.1 – 1 General overview of AC power system Network Distribution



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Fig 4.1.1–2 11kV, 50Hz Network Distribution

Tr2320MVA

66kV / 11kV%Z: 12.34%

O223

3φ 66kV - 50Hz

SC

SR

SC

SR

SC

SR

High order2500 kvar

7th300 kvar

5th500 kvar

F233 F231

89TP

F232

R

SC

SR

Harmonic Current Filters4000 kvarShunt

Capacitor

52NP1

TFC-PS

123

O123

3φ 11.5kV - 2000A - 25kA - 50Hz



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Fig 4.1.1–3 Network distribution for H-MG

Tr2425MVA

66kV / 11kV%Z: 11.15%

O224

3φ 66kV - 50Hz

SC

SR

SC

SR

SC

SR

11th2500 kvar

7th1400 kvar

5th1500 kvar

F244 F241

89TH

F243

SC

SR

Harmonic Current Filters5000 kvarShunt

Capacitor

52DH

124

O124

3φ 11.5kV - 2000A - 25kA - 50Hz

52MH152MH2

52MH2A 52MH2B

INV-1M

INV-2M

RF-M54MH

IM MGFW52MH3A 52MH3B

LRH

41EH

52EH

3φ 11.5kV - 2000A - 25kA - 50Hz

89NGH

52GH152GH2

To Fig.4.1.1-4



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From H-MG (Figure 4.1.1-3)

BUS23 kV - 2000 A

52PH2000 A

52NH1 52NH2 52RH1 52RH2 52SH

89GH2

From T-MG

PS-FPPC1(Upper)

NNBI (40MW) PNBI (40MW)

3 24 kV - 2000 A - 40 kA

3 24 kV - 3000 A - 40 kA

52MP 52QP 52HP 52VP22 52VP21 52VP14 52VP13 52VP12 52VP11 52FP22 52FP21 52FP12 52FP11 89GP2

PNBI (20MW)

RWM Control CoilPS

Booster PS

To T1VTo T2VTo T3VTo T4VTo T5VTo T6VTo T7VTo T8VBase PS

3 24 kV - 3000 A - 40 kA3 24 kV - 2000 A - 40 kA

52RT111200 A

52RT121200 A

52RT131200 A

52RT141200 A

52RT212000 A

52RT222000 A

To T4GTo T3GTo T2GTo T1GTo T4LTo T3LTo T2LTo T1L To T6LTo T5L To T7L To T8L

Base PS

BUS23 kV - 3000 A

PS-FPPC2(Lower)

Fig 4.1.1–4 18kV, 77.6-54.2 Hz H-MG network distribution



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4.1.1.1. TF power supplies (out of scope)

---- OMISSIS ----

4.1.1.2. PFC power supplies

Detailed information on CS and EF Coils is reported in PID sections 2.2 and 2.3, respectively. The PF coil power supplies shall provide a bipolar DC current adequate to achieve the required discharge scenarios. Except CS2 and CS3, all the existing transformers will be re-used.

4.1.1.3. FPPC power supplies

To control plasma position two coils (FPPC), the first in an upper position the second one in a lower position with respect to the vacuum chamber of JT-60SA, will be used. FPPC PS shall provide the current needed to produce magnetic field on the plasma to control its position.

4.1.2. 18kV Network Main Characteristics

All the PFC and FPPC PS units are supplied by a flywheel motor generator H-MG, whose main electrical characteristics are listed in Tables 4.1.2–1 and 4.1.2–2.

Table 4.1.2-1 Specification of Motor Generator H - MG

Type Vertical type, revolving-field type,three phase synchronous generator

Rated capacity 400 MVAVoltage 18 kVCurrent 12830 APower factor 0.62 (lag)Frequency 77.6 ~ 54.2 HzRotating speed 582 ~ 406.5 rpmPole numbers 16Available discharge energy 2650 MJFlywheel effect (GD2) 11600 ton-m2

Drive type Induction motor drive (pony motor drive)

Exciter type Thyristor separate excitationStator coil connection Star, 2 windingsNeutral grounding system 100A grounding resistance



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Table 4.1.2-2 Motor Generator H-MG constants (77,6Hz)Synchronous reactance : xd 1.88 (pu)

Quadrature-axis synchronous reactance : xq 1.38 (pu)

Direct-axis transient reactance : x’d 0.32 (pu)

Direct-axis subtransient reactance : x”d 0.18 (pu)

Quadrature-axis subtransient reactance : x”q 0.20 (pu)

Armature leakage reactance : xl 0.126 (pu)

Zero phase reactance : x0 0.16 (pu)Open circuit time constant : Td0’ 3.8 (sec)

Open circuit subtransient time constant (direct-axis) : Td0” 0.07 (sec)

Open circuit subtransient time constant (quadrature-axis) : Tq0” 0.66 (sec)

Armature time constant : Ta 0.07 (sec)

Armature winding resistance : ra 0.004 ohm / phase

Field winding resistance : rf 0.19 ohmNo load field current : If0 790 A

Main characteristics of the connections are reported in Table 4.1.2-3

Table 4.1.2-3 18kV distribution mains characteristics Voltage rating under steady state conditions at transformer primary side (kV) 18

18kV HVAC cables total impedance per phase at 77,6Hz (p.u. or Ohm) reference 4

Protective relays at 18kV transformer primary sides reference 4

LVAC cables total impedance per phase at 77,6Hz (p.u. or Ohm) (*) reference 4

Protective relays at LVAC sides (*) reference 4

Nominal power (MVA) 400

Breaker Characteristics reference 4

Frequency 77,6-54,2 Hz

(*) For CS1,CS4, EF1-6 PSs

4.1.3.11 kV Network main characteristics (out of scope)

---- OMISSIS ----

4.2. General requirements



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This Section provides requirements which shall be fulfilled unless otherwise agreed between the Customer and the Industrial Supplier.

4.2.1. Design and construction

The design and construction of the equipment shall conform to the best current engineering practice and in agreement with IEC Std. The essence of design shall be simplicity and reliability in order to give long continuous service with minimum maintenance requirements.As far as possible, the Industrial Supplier shall design and manufacture the components included in the present specifications in line with his own standard manufacturing. Modularity shall be used to the maximum extent possible so as to minimize the time required for maintenance and repair.All components and cables shall be able to support mechanical forces during shipment, and electromagnetic forces occurring during normal operation and fault conditions.

4.2.2. Redundancy and safety factors

Thyristor converters shall be designed in agreement with IEC 60146 Standard.In order to ensure a good reliability for the PS systems, suitable safety factors shall be adopted at least not lower than the maximum ones normally used in industrial practice. The Industrial Supplier shall demonstrate that the values are appropriate for the present procurement. In particular, the following values shall be taken into accounts for thyristors/diodes:

Voltage safety factor ( defined as max repetitive peak forward blocking voltage/secondary transformer no-load RMS voltage) : ≥3,5

Thyristor junction temperature on normal operation shall be taken about 10 °C below the max junction temperature recommended in the specific thyristor data sheetThe maximum junction temperature on normal operation shall be at least less than the maximum junction temperature recommended in thyristor data sheet

Thyristor junction temperature after a converter fault: for this purpose it shall be assumed that the most severe fault occurs after the thyristor has reached the maximum junction temperature in normal operation. Under this assumption, in principle, the thyristor junction shall remain in the limits shown in the data sheet. The Industrial Supplier can propose during the DDP different values depending on specific information provided by the thyristor’s Manufacturer.

Current sharing factor in case of paralleled components : ≥ 1,2 (the Industrial Supplier shall take any provision to reduce current sharing at minimum level and shall demonstrate it during DDP. This value shall be used to select the proper thyristor component and shall be, in any case not less than 1,2)

In case of redundant components, the failure of one component shall result in the exclusion/by-passing of that component without affecting the operation of the overall device. An alarm shall be generated to warn about the failure.The CB units are extremely important to save the investments and for the continuous operation of JT-60SA. The reliability of CBs are therefore of paramount importance and the design of the equipment covered by this specification shall therefore consider the reliability as one of the prime aims.

4.2.3. Availability

The unavailability, only depending on internal faults (i.e. faults occurred on the load or induced by the load or by the AC network, faults due by unproper use of the apparatus and maintenance time are not included), of each power supply shall not exceed limits defined in the following criticality Matrix.

The acceptable cases are called “A”The unacceptable cases are called “U”



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Breakdown means the unavailability of the function or the equipment.

BREAKDOWN (including fault analysis time )

VERY FREQUENTFmax = 12 / year

FREQUENTFmax = 2 / year

RAREFmax = 1 / year

IMPROBABLEFmax = 0,2 / year

CATASTROPHICshutdown > 24h U U U U

CRITICAL8h < shutdown < 24h

Average = 16hU U U A

MAJOR2h < shutdown < 8h

Average = 5hU U A A

MINORShutdown < 2h

Average = 1hU A A A

The upper Matrix provides the “acceptable” breakdown duration o Catastrophic shutdown : 0 h / yearo Critical breakdown : 0.2 x 16 = 3.2 h / yearo Major breakdown : 1 x 5 + 0.2*5 = 6 h / yearo Minor breakdown : 2 x 1 + 1 x 1 + o.2 x 1 = 3.2 h / year

The total time of “acceptable” breakdown is: T acceptable breakdown = 12.4 h / year

The JT-60SA Tokamak operates 150 days / year and 10h / day. The availability ratio is = (150 x 10 – 12.4) / (150 x 10) = 99,17 %

All the equipments have to be designed to achieve such an availability ratio taking into account the optimization of the MTTR (mean time to repair) and MTBF (mean time between failure).

4.2.4.Transmission and insulation of signals

The transmission of the signals between components placed inside high voltage areas and components/equipment placed in low voltage (accessible) areas shall be as much as possible via optic fibres, which also assure the insulation of the signals.If the signal transmission via cable is selected, the signals shall be double isolated for the relevant test voltage applicable to the particular HV component, in such a way that failure of one insulating layer does not endanger personnel and/or equipment at the low voltage side.Alternatively a screen may be provided between high voltage circuits and low voltage parts. The screen will in general be connected to the local ground system of the supply. The screen shall be able to withstand the relevant fault current for the time required to clear the fault.Different arrangements shall be subjected to the approval by the Customer during the Detailed design Phase (DDP).



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4.2.5. Combustible materials

Material that would support combustion must be LSOHFR (Low Smoke Zero Halogen Fire Retardant). In particular for cables and optical fibres refer to Section 4.2.17.

4.2.6. Cleaning and painting

Before receiving any protective coating or paint, all parts of the equipment shall be cleaned to remove all corrosion and foreign materials. All interior and exterior surfaces shall receive a suitable inhibitive primer treatment and two coats of finish paint. The board colours will be agreed during the DDP with the Customer.

4.2.7. Audible noise

This section refers to the audible noise outside the cubicles ( taking closed the cubicle doors) in normal operating and stationary conditions. All equipment shall operate without undue vibration and with the lowest possible audible noise to avoid causing any harmful effect. In particular the daily average noise value (calculated as an average over 8 hours and expressed i in dB(A)) must not exceed 85dB(A),when measured at 2 m. distance and using an instrument according to IEC 61672 .

During the switching phase, peak noise and vibrations shall be reduced under a threshold to be defined during DDP.

4.2.8. Use of oil

PCB (polychlorinated biphenyl) and PCT (polychlorinated triphenyl) type materials shall not be used in any component. Large oil filled equipment shall not be installed indoor .

4.2.9. Use of ISO metric threads

All nuts, bolts, studs, washers etc. shall be of standard ISO metric sizes. Other sizes may be permitted only after approval by the Customer.

4.2.10. Anti-condensation devices

All items of electrical equipment which are liable to suffer from internal condensation shall be fitted with proper device which will prevent condensation in worst ambient conditions (ref Section .11)The operation of these devices shall be monitored and an alarm rose in case of failure. Local visible indication of failure shall also be provided.These devices shall be energised separately from any other equipment in the enclosure/cabinet.

4.2.11. Fire and explosion protection

Smoke detector and other fire protection devices are not requested inside any procured electrical cubicle.All cubicles have to be designed to confine any possible explosion of any component inside.



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4.2.12. Access to equipments

Provision, including a suitable internal illumination system, shall be made for easy access to all equipment and components for maintenance and troubleshooting.If the boards will be provided with windows, the glass used shall be of shatterproof safety type.

4.2.13. Grounding

All equipment enclosures, screens and metallic parts (wherever requested by IEC standards and/or local regulations) shall be grounded (ref. Section 4.6.5).Each enclosure shall be provided with suitable bonding leads to connect together all the part of the enclosures (e.g. doors) and all items inside the enclosure requiring grounding.All the ground conductors shall be made of copper and shall be sized to carry the fault current without voltage rises dangerous for the human safety. All power ground leads shall be sized according to the IEC standards and/or local regulations applicable to the components/sub-systems of the supply. All the grounding connections shall be clearly pointed out and easily accessible.

4.2.14. Resistors

The technical requirements for power resistors are given as follows: - Tolerance of the resistance with respect to the nominal value shall be according to the relevant IEC

standard. The range of ambient temperature is given in Sections.11.- Resistors shall keep their resistance value within the specified limits during all their service life. The

resistors may be subjected to occasional current overloads that shall be defined during the DDP. A conservative number of maximum overloads shall also be considered in determining the service life.

- Industrial Supplier shall provide that the maximum stray inductance remains below values not affecting the performance of the equipment where the resistor is implemented.

4.2.15. Reactors

To comply with the technical PS requirements (Sections 4.4 and 4.5), interphase/circulating reactors between two parallel bridge or/and back to back connections are needed.The scope of these reactors is:

- Parallel connection: due to the not equal instantaneous outputs of each rectifier , an interphase reactor is used to support the difference in instantaneous rectifier output voltages and allow each rectifier to operate independently.

- Back to back connection: an interphase reactor is necessary: to take the circulating current within 10% of the DC nominal current (IDC,nominal ), to reduce the circulating current ripple, that might be large for the transformers with the

phase shifting of 30 degrees, within a limit acceptable for a safe and reliable operation of the PS.

For all these reasons it seems to be better to use a saturable reactor type to provide the two necessary inductance values in both full and circulating current conditions . In any case the Industrial Supplier could evaluate alternative solutions, that shall be quoted in the offer separately, and he shall prove their convenience during the DDP of the Contract.Attention must be taken that the reactors are situated sufficiently far away from neighbouring metallic parts to ensure that these aren’t heated excessively by eddy currents. The tolerance of the inductance with respect to the nominal value at 50 Hz of each reactor shall be according to the relevant IEC standard. In particular, the inductance values of the two branches of the interphase reactance can differ each other inside the range: 0 / +20% (IEC 60076-6 “smoothing reactors”).



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Filter reactor inductance (as well as the values of the resistance and stray capacitance) shall be kept within the design limits required for the correct operation and the desired performance of the filter. The determination of the inductance value shall take into account the expected conditions of installation and the presence of nearby metallic structures.

All related design details shall be discussed during the DDP.

4.2.16. Capacitors

Power capacitors may be used in various parts of the supply: filters, snubber circuits, capacitor banks... The nominal values of capacitance for each capacitor unit shall be referred at a frequency or typical frequencies range of the specific applications. The main characteristics (including inductance and resistance) of the capacitors shall be selected by the Industrial Supplier to ensure a safe and reliable operation of the PS.The tolerance of the capacitance with respect to the nominal value shall be according to the relevant IEC standard.

4.2.17. Cables and fibres optics

All used cables shall be selected, sized and laid according to applicable IEC standards, in particular IEC60502. All power, measurement, control and auxiliary cables shall be made of copper.Cable and fibre optics insulating material shall be LSOHFR (Low Smoke Zero Halogen Fire Retardant, ref IEC60332-1, -2 -3).Cables/busbars shall be de-rated for parallel connection and installation as for the latest issue of the applicable IEC standards.All cables and fibre-optic cables shall have appropriate mechanical support to minimise constrains on the connectors and respect manufacture requirements on bending radius.Cables carrying signals from different sources shall be segregated into groups (depending on current level, frequency, voltage,…) ,and marked appropriately with the identity of the source.Analogue signals shall be routed separately from digital signals, using different cables. To reduce interference on control, protection and monitoring signals, twisted pair cables shall be used and located inside proper cable trays. During the DDP, the Industrial Supplier shall demonstrate that the proposed cabling and wiring systems comply with EMI/EMC IEC standards.Each multi-pair or multicore cable shall allow for at least 20% spare capacity. All spare cores shall be terminated.The design of the fibre optic transmission system shall allow for at least 10% spare fibre optic cable capacity.Within cubicles/panels, all cables shall be clearly identified with a label of an approved type and this label shall be clearly visible from within the cubicle/panel. Labelling criteria will be defined during the DDP.

4.2.18. Demineralised water cooling system

Demineralised water cooling system for aluminium components will be made available by JAEA (ref. Sections 4.6.4 and 11.5) near by each PS unit. This section gives the technical requirements of the demineralised water cooling system for all PFC, and FPPCC PSs. In the following both possibilities are considered of an internal closed loop water cooling circuit, provided by the Industrial Supplier and connected through an heat exchanger to the JAEA water cooling system (external closed loop cooling), and of directly cooling from the JAEA demineralised water cooling system (JAEA cooling).

4.2.18.1. General

The following prescriptions shall be applied:



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1) the connection to the JAEA demineralised water distribution system is included in the present procurement; the type of connection will be defined with JAEA during the DDP;

2) the sensors used for the control and fault detection of the cooling system part provided by the Industrial Supplier shall be provided and installed by the Industrial Supplier itself;

3) all pipework shall be fitted with an adequate number of isolating valves, namely:

a. at the interface point with the JAEA water cooling system;

b. to isolate the cooling to individual units for maintenance;

All pipework and components shall be fitted with automatic air bleed valves installed at the highest point in the system. The lowest points shall have drain valves fitted.The pipework shall include fittings for pressurising the cooling circuits after installation on site. The pipework shall include thermometer pockets to measure the water cooling inlet and outlet temperature on both sides (JAEA and Industrial Supplier) of the heat exchanger.Filter shall be installed at the inlet of JAEA demineralised water distribution system.The data of the JAEA water cooling system interface are described in Section 4.6-4. Mechanical interfaces for connections will be defined during the DDP.

4.2.18.2. Prescriptions in case of internal closed loop cooling

The following prescriptions shall be applied to the internal closed loop cooling of PS in case the Industrial Supplier, in agreement with the Customer, selects to provide such an internal closed loop cooling system. In this case the JAEA water cooling system will be raw water.

1) Each demineralised water cooling unit shall be completed with heat exchanger, deioniser, filters, demineralised water pump, demineralised water tank (buffer tank), all the interconnecting pipework with isolation and bleeding valves, flow and pressure transducers, temperature transducers, conductivity meter, local control panel housing motor starter, control and trip relays, etc.

2) All pipework shall be fitted with an adequate number of isolating valves, namely:

c. at the interface point with the JAEA water cooling system;

d. to isolate the cooling to individual units for maintenance;

e. to isolate individual components of the cooling system to allow their removal, such as heat exchanger, deioniser, filter, pumps, sensors, etc.

f. filters shall be fitted with a by-pass valve to allow operation with the filter removed.

3) The internal closed loop cooling system shall be designed for the thermal load resulting from the nominal operation of the PS units (ref Section 4.3, 4.4 and 4.5)

4) The cooling unit shall include a dedicated system to maintain a low conductivity of the water cooling ( ≥ 1M*cm at 45°C).

5) To prevent condensation on the cooled components, a motorised by-pass valve shall be included in the internal closed loop cooling circuit, in parallel to the heat exchanger. The valve shall be controlled by a temperature transducer monitoring the demineralised water inlet temperature.

6) The design of the heat exchanger shall be such as to avoid direct ingress of JAEA cooling water into the internal closed loop water circuit due to defective weld, joint or gasket by ensuring that the internal closed loop water circuit is operated at a higher pressure than the JAEA water cooling system.

7) The internal closed loop cooling system shall be fitted with a separate motor-pump unit to be used in event of failure of the first pump. The spare motor-pump unit shall be fully installed, the transfer between the two units requiring only to open/close isolation valves. It shall be possible, via a selector switch in the control panel of the PS internal closed loop cooling system, to select either of the two motor-pumps units.



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4.2.18.3. Control and monitoring

The demineralised water cooling system of the PS unit shall be provided with a local control panel for local control, monitoring, alarm and signal conditioning, protection and interlock. The local control panel shall house the motor starters (in the case of internal closed loop water cooling), control relays, interface units for transducers, marshalling terminal blocks, indication and local command switches.At least the following measurements shall be made available at the water cooling system control panel:

1) inlet water flow;

2) inlet water temperature

3) inlet water pressure

4) inlet water conductivity

5) outcome water temperature

6) outcome water pressure

7) internal closed loop water flow (in case of an internal closed loop water cooling system is used);

8) internal closed loop water conductivity (in case of an internal closed loop water cooling system is used);

9) internal closed loop water temperature (in case of an internal closed loop water cooling system is used);

10) internal closed loop water level monitor sensors (in case of an internal closed loop water cooling system is used).

At least the following alarm signals shall be made available at the water cooling system control panel:

1) low flow

2) water low resistivity

3) water high temperature

4) low flow for the internal closed loop circuit (if any);

5) internal closed loop water low resistivity (if it is the case);

6) internal closed loop water high temperature (if it is the case);

7) abnormal internal closed loop water level (if it is the case);

8) pump motor overload;

9) undervoltage in the auxiliary circuit;

10) earth leakage current.

The alarm thresholds shall be easily adjustable via the water cooling system control panel. A general alarm, collecting all the alarms of the PS water cooling system, shall be sent to the PS LCC (Local Control cubicle) .

4.2.19. Cubicles IP codes

As a general rule, all components will be housed inside proper closed cubicles. In some specific cases or as an alternative to be offered separately, the Industrial Supplier could propose installation inside fences. This has to be agreed with the Customer during the DDP. In any case the Industrial Supplier shall take the full responsibility to provide and install the fences including all human safety provisions required by the local rules.



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4.2.19.1. Power cubicles

The IP code for the indoor enclosures of the electrical equipments are indicatively assumed to be IP 5(dust protected) 2(dripping, 15° tilted) D (protected against access with a wire) H(high voltage apparatus).

In the case the doors of the board are open, it has to be avoid any possible risk for accidental direct and indirect contacts to electrical active parts by the operator (for example Plexiglas screens will be installed inside the cubicle) with minimum level protection IP3. According to feasibility, a safety dedicated key-board system will be also installed to be sure that both related AC and DC powers are shutdown before opening any cubicle ..

4.2.19.2. Control cubicles

The IP code for the indoor enclosures of the electrical equipments are indicatively assumed to be IP 5(dust protected) 2(dripping, 15° tilted) D (protected against access with a wire) H(high voltage apparatus). In the case of the doors of the board are open, the IP3 is requested to avoid any possible risk for accidental direct and indirect contacts to electrical active parts by the operator.

4.2.20. Local control cubicles

This Section gives the electrical and mechanical requirements of the PS LCCs.

4.2.20.1. General

All LCC hardware shall be housed in cubicles; the degree of protection for the cubicles will comply with Section 4.2.19.2.

Three separated Vdc networks shall be provided by the Industrial Supplier inside LCC starting from those made available by JAEA (ref. Section 11):

1) the first dedicated to power transducers, solenoid valves, emergency-stop buttons and any other equipment not related to I/O;

2) the second to supply I/O interfaces, PLCs, communication cards, ...

3) the third one to supply the thyristor converter regulator including protections

The Industrial Supplier will use the proper level of voltage depending on his experience and he will motivate it in the design report. Above mentioned circuit will be protected by different proper circuit breakers. Additional circuit breakers must be implemented to separate and effectively protect different subsets of equipment according to their location or functionality. Each DC circuit breaker shall cut off both polarities (+Vdc / 0v).

Parts of the system fed by 200/400 Vac will be protected by separated circuit breakers to separate and effectively protect different subsets of components according to their location or functionality. Each circuit breaker shall, in accordance with the IEC standard, be multi-pole; i.e. shall cut off all the phases and the neutral. A set of bus-bars may also be associated, if needed, with the circuit breakers. A 200 Vac mains plug shall be fitted inside each cabinet and shall be protected by a dedicate differential breaker (suggested characteristics :16A K curve/ 30 mA HPI or similar)..Adequate internal illumination system shall be provided in order to make possible cubicle inspection.A holder for documents shall be fitted outside one of the cabinet doors.



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4.2.20.2. Equipments inside the cubicles

Dimensions of any panel, box and cabinet shall be defined including a minimum of 20% of spare area (for panels) or volume (for boxes and cabinets). Concerning the spare space inside the wiring channels, there shall be a minimum of 20% of spare space. The wiring channels shall be halogen-free and flame retardant, fitted with a cover and secured by screws (ref Section 4.2-5).There shall be at least 150 mm of distance between the terminal blocks and the lower or upper neighbour objects to facilitate cable connection. The cubicles shall be fitted with low-consumption lamp for internal lighting, switched on by the opening of the doors.

Adequate test points, with easy access, shall be included in the equipment to enable maintenance and trouble-shooting to be carried out as quickly as possible. On the basis of a proposal from the Industrial Suppliers, test points will be defined during the DDP.Taking into account Site Conditions (ref. Section 11) each cubicle must be properly cooled/heated to ensure that all internal components can properly operate and that no damage occur to them . Visual indications such as LEDs, to indicate the local/remote control status and operating mode, shall be mounted on the front panel.

4.2.20.3. Cabling Terminal blocks / Connectors

Terminal blocks/connectors for cabling shall be selected by the Industrial Supplier by his on experience and convenience among largely diffused components complying with relevant IEC standards.No more than two wires shall be connected to each terminal. Channels of the same type (analogue input, analogue output, digital input and digital output) shall be connected to consecutive groups of terminal blocks and not inter-mixed.Depending on his selection of cabling connectors, the Industrial Supplier could be requested to provide also the complementary component for external connections.

4.2.21. LV AC/DC Connections

This section regards LV AC transformers connections and DC feeders.All connections on the primary side of any power transformer, including related withdrawable circuit breakers, will be provided by JAEA and it is out of the scope of the present procurement.Regarding connections between each bridge of each thyristor converter and the secondary winding of the related transformers:

for already existing transformers (related to CS1, CS4, EF1 and EF6 PSs), each bridge of single converter is linked with a different secondary winding of related Transformers, the Industrial Supplier shall provide connecting points according to IEC standard and all needed modifications of the existing AC feeders. Tab 4.2.21 -1 shows actual transformers characteristics and connections type for LV AC side. The Figure 4.2.21-1 shows the principal characteristics of existing coaxial cables and cable end insulation box. Plants and sections of LV cable box are showed in reference drawing DWG 107. Transformers windings groups is shown in drawing 17. The Industrial Suppliers shall provide the connections (low inductive type) between the existing cable boxes and PS converter boards.

for new transformers (related to CS2 and CS3 PSs), the Industrial Supplier shall provide and install all needed cables/busbars (low inductance type), with the related trays/ducts, and connect them both to transformer and converter side. These cables have:

o to meet the insulation levels of the secondary sides of the related transformers,



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o to withstand electromechanical stresses during faults.

Table 4.2.21-1 Correspondence between existing Transformers and new Converters

Transformer Yard (outside) Rectfier room (Second floor)

cables x phase

N.

cable Lenght

mFrom ToTransformer Rectifier

LV side Phase Shift T3G 0° SRG2B CS1(0°) 4 36T3G -30° SRG2D CS1(-30°) 4 37T4G +15° SRG2A CS4(+15°) 4 24T4G -15° SRG2C CS4(-15°) 4 32T1G 0° SRG1B EF6(0°) 4 44T1G -30° SRG1D EF6(-30°) 4 38T2G -15° SRG1C EF1(-15°) 4 37T2G +15° SRG1A EF1(+15°) 4 45

DC feeders have to be designed to withstand: electrical stresses (ref. tables 4.3.2-1, 4.4.2-1 and 4.5.1-1) electromechanical stresses due to fault conditions seismic design (Sections 4.2.22 and 11.2)



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Figure 4.2.21-1 LV cables characteristics

R

R

Rnl

Rnl

RGROUNDING

MS = Mechanical SwitchSS = Bi-directionnal Static Switch

400 msec

Costant time 8 secIdmax



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4.2.22. Crowbar units

The scope of the procurement includes Crowbar units (CB) and their busbar connections to the PS.CBs can be operated in the following cases:

1. automatically, by an internal Break-over-diode (BOD) in case of overvoltages across DC busbars and to ground, the non-linear resistance Rnl will protect the PS of the overvoltages before the static switch (BOD) intervention

2. by the thyristor converter control system to protect the converter itself ( for example in case of AC voltage missing, internal fault, max DC current,…);

3. by an external command by the JT-60SA SCSDAS, GPS or QDC (for example in case of Quench Protection Circuit operation).

The proposed reference basic scheme and operation sequence are described in Fig. 4.2.22-1 and Fig. 4.2.22-2. In principle no resistance is foreseen in series with the CB. This is to make easier current commutation from the converter into CB. The Industrial Supplier shall check the situation during the DDP and propose motivated modifications on the basis of his experience and his calculations. Without any resistance in series with the CB, the time constant of the load current decay will result too high and the consequent I2t will overcome the CB capability. As a consequence, in case of CB operation also Quench Protection Circuit must be operated ( Reference 3).

In the proposed reference scheme of Fig. 4.2.22-2, non linear resistances (Rnl) are included in order to smooth over voltages across the converter before crowbar operation. The Industrial Supplier shall propose alternative schemes also analysing if Rnl resistors are strictly needed depending on the thyristor converter design. A final decision will be taken during the DDP.

Fig. 4.2.22-1 Simplified Crow Bar reference scheme Fig. 4.2.22-2 Simplified Crowbar operation sequence



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Taking into account the CBs operation has described above, Table 4.2.22-1 shows the reference parameter for CBs design .

Tab 4.2.22–1 Reference Design Parameter for Crow Bar UnitsCB Identification PFC PSs FPPC PSsBidirectional / Unidirectional B BIMax (kA) CS1-CS4 : ±23 ±26

EF1, EF6 : 10/-23I2t (GA2t) 2 1,5 (TBC)Non linear resistor TBD by Industrial

SupplierTBD by Industrial

SupplierSeismic Design Yes YesInsulating Voltage to Ground /Testing voltage to ground (kVdc) on factory

8/16 2/5

Parallel Resistor R (Ohm) TBD (*)Ground Resistor RGROUND (kOhm ) 1(*) 1(*) Number of operation without maintenance

(*) (*)

(*) To be defined during a DDP

All crow bar units and DC feeders are assumed to be safety relevant components (class B, ref. par.11.2) and, then, to be seismic resistant designed. More information on seism spectra at Naka Site are reported in Annex 1, PID Section 1.8.3. In this case, IEC68-3-3 standard shall be considered and the following reference parameters taken into account the:

horizontal floor acceleration =4.5 m/s² = 0,45G vertical floor acceleration = 2.25 m/s² = 0,225G

4.2.23. Disconnectors

Each PS must be disconnected from DC side by remotely operated no-load disconnecting switches.

AC grounding manually operated disconnectors on the AC input from the secondary sides of the transformers are needed

In both cases, a proper set of key inter-locks shall be provided to avoid any improper operation.All DC disconnectors shall be operated in both Local/Remote mode (ref. Section 4.7).All disconnectors shall be able to withstand the most severe overvoltage/overcurrent.

4.2.24. Compressed air

Industrial standard compressed air will be made available by JAEA (ref. Sections 4.6.3 and 11.5.3) who shall also take care of the connections on each PS unit. The Industrial Supplier have the responsibility to:

adapt it ( valves, measurement, filtering, lubrication, drying, pressure value,…) to the specific needs of his apparatus;

provide its distribution among all devices where necessary.

Enough compressed air shall be stored in the procured apparatus to operate a full cycle open-close-open of all related switches/disconnectors. Pressure level of the stored compressed air shall be monitored. Related status/alarm shall be included in the signals foreseen in Tables 4.6.6.1-2 and 4.6.6.3-1, respectively

4.2.25. Measurement transducers

Transducers have to be proper for the related measurement and they have to comply with the relevant IEC standards. A check of transducer internal fault has to be implemented and made available for the control system.

CS1 Circuit Configuration CS2 Circuit Configuration

+

T3G30.1MVA×2units

18kV/803.5V%Z: 23.12% at 77.6Hz

Switching Network Unit~ -5kV

CrowBar Switch

Quench Protection Circuit(Hybrid type)±4.2kV/±20kA

SuperconductingCoil

Base PS939V/±10kA×2units

O/C

R1 R2

< 0.21

Current ReversingLink

+


CrowBar Switch


SuperconductingCoil

Base PS1.25kV/±10kA×2units

R1 R2


T-CS2TBD MVA(New)×1unit

18kV/960V%Z: ~ 24% at 77.6Hz0° -30°

BPS

CC

C

BPS

O/C

C

CC

0° +30°

1 k

< 0.21

1 k



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4.3. TF coil power supply (out of scope)

---- OMISSIS ----

4.4. PF coil pwer supplies (PFC PS)

4.4.1.Reference schemes

Figure 4.4.1-1 shows the general schemes of the power supply units included in the present specifications (CS1-4, EF1 and EF6 PSs). For the insertion in the existing PS system see ref. DWG1.The poloidal circuit is composed of 10 independent circuits feeding the poloidal superconducting coils (PFC): Central Solenoid Coils from CS1 to CS4 and Equilibrium Field Coils from EF1 to EF6. Each one of these circuits is composed of :

1. superconducting magnet, 2. thyristor converter power supply;3. converter transformers, 4. Quench Protection Circuits, 5. Switching Network Units ( for CS1, CS2, CS3, CS4 coils ) or Booster PSs ( for EF1 and EF6 coils) to

produce the needed voltage for plasma breakdown.

The scope of the present procurement includes: converter transformers for PFC PS CS2 and CS3 only; 6/12 pulses, 4 quadrants thyristor converters (back-to-back scheme) for CS1-4, EF1 and EF6 PSs (including

regulator, firing and protection systems); AC LV lines between new transformers and PFC PS CS2 and CS3 only; AC LV feeders between the existing connections and the converters; complete crowbar (CB) set (solid state and mechanical making switches, BOD, parallel and non linear

resistors, control and protection systems…); interphase/current circulating inductances; control cubicles; all bus-bars or cable connections inside PS units or between provided cubicles, incuding any needed

accessory for installation/wiring; cooling system distribution inside the PS units; compressed air distribution (if

needed) inside the PS cubicle DC disconnectors and AC grounding switches (ref 4.2.23) and the CB cubicle for MS (ref.4.2.22)

The needed DC disconnectors and AC grounding switches (ref. 4.2.23)



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CS3 Circuit Configuration

+


CrowBar Switch


SuperconductingCoil

Base PS1.25kV/±10kA× 2units


CS4 Circuit Configuration

+

T4G30.1MVA×2units

18kV/803.5V%Z: 23.12% at 77.6Hz


CrowBar Switch


SuperconductingCoil

Base PS939V/±10kA×2units


T-CS3TBD MVA(New)×1unit

18kV/960V%Z: ~ 24% at 77.6Hz

< 0.21 < 0.21

+15° -15°

BPSO/C

R1 R2

C

O/C

R1 R2

C

BPS

MS MS

CC CC

+30°0°

1 k 1 k

EF1 Circuit Configuration

CrowBar Switch+7.5°

Booster PS±5kV/+4kA(full load)

+37.5°

Booster PS±5kV/-14.5kA

(full load)

+7.5°

+37.5°

+SuperconductingCoil



CrowBar Switch

+7.5°

Booster PS±5kV/+4kA(full load)

+37.5°

Booster PS±5kV/-14.5kA

(full load)

+7.5°

+37.5°Quench Protection Circuit(Hybrid type)±4.2kV/±20kA

EF6 Circuit Configuration

+SuperconductingCoil


T2G30.1MVA×2units

18kV/803.5V%Z: 23.12% at

77.6Hz

T1G30.1MVA×2units

18kV/803.5V%Z: 23.12% at

77.6Hz

< 0.21 < 0.21

Base PS939V/-10kA

+15° -15° 0° -30°

Base PS939V/±10kA

Base PS939V/-10kA

Base PS939V/±10kA

BPS BPS

C C

CC CC

1 k 1 k



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Figure 4.4.1-1 JT-60SA PFC reference schemes

4.4.2. Performances

The main reference design parameters for the power supplies of the relevant PF magnets are summarized in Table 4.4.2 -1. In addition it has to be noted (ref. section 4.4.5) that an electrostatic screen shall be located between primary and secondary windings of the transformer. This has the double scope to reduce stray capacitance and to prevent any contact between the windings in case of insulation failure. For this reason the screen has to be grounded. The Industrial Supplier shall take care of it during the design of the PFC PS.

Table 4.4.2-1 Reference Design Parameters for PFC power supplies V20 (*1)

(kV)Winding group

Z(%) (at 77,6Hz))

Frequency range (Hz)

VDC0 (*2) (kV)

IDC,nominal (*3) (kA)

VGND (*4) (kVrms)

Duty cycle(s/s)

CS1 0.8 DWG 17 23 77,6 – 54,2 1.0 ± 2 * 10 6,5/12 (*5) 250 220 / 1800CS2 0.96 DWG 17 TBD by

Industrial Supplier

77,6 – 54,2 1.3 ± 2 * 10 6,5/12 (*5)

CS3 0.96 DWG 17 TBD by Industrial Supplier

77,6 – 54,2 1.3 ± 2 * 10 6,5/12 (*5)

CS4 0.8 DWG 17 23 77,6 – 54,2 1.0 ± 2 * 10 6,5/12 (*5)EF1 0.8 DWG 17 23 77,6 – 54,2 1.0 +10 / -2*10 8/16 (*5)EF6 0.8 DWG 17 23 77,6 – 54,2 1.0 +10 / -2*10 8/16 (*5)(*1) no load secondary transformer voltage(*2) No load DC voltage defined as 1,35 x V20

(*3) Accuracy ±1% of the nominal value and when the converter is operating within its voltage/current regulation limits



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(*4) Insulating Voltage to Ground/Testing voltage to ground on factory (ref. IEC 146-1-1 sections 4.2.1.3 and 4.2.1.4)(*5) In his offer, the Industrial Supplier can homogenize the insulation level at 8/16kV if useful to reduce the overall costs

4.4.3.Operational requirement for PFC PS units

The thermal design of All PFC PSs shall be worked out considering the load current waveforms indicated in Figure 4.4.3-1.designed to provide the nominal current in a pulsed operation mode (duty cycle 250/1800s) .

-40 -20 0 20 40 60 80 100 1200

5

10

15

20

t[s]

I[kA

]

CS1, CS2, CS3 and CS4 forward current

0 20 40 60 80 100 120 140 160 180-20

-15

-10

-5

0

t[s]

I[kA

]

CS1, CS2, CS3 and CS4 reverse current

-10 -5 0 5 10 15 200

2

4

6

8

10

t[s]

I[kA

]

EF1 and EF6 forward current

0 20 40 60 80 100 120 140 160 180-20

-15

-10

-5

0

t[s]

I[kA

]

EF1 and EF6 reverse current

Figure 4.4.3-1 Load current waveforms to be used for the thermal design of PFC PSs

Each PFC PS shall be designed to be regulated following voltage or current reference signals (selection of operation mode will be done outside the plasma shot) distributed by SCSDAS through the Power Supply Sepervising Computer (PS SC, ref. Section 4.6.6) and to properly operate with an AC voltage frequency variation from its initial value of 77,6Hz down to 54,2 Hz. Expected typical currents are shown in Figure 4.4.3-1 2 (ref. to PID section 1.2) to inform the Industrial Supplier regarding the control requirements for the PSs. With reference to Figures 4.1.1-1, 4.1.1-3 and 4.4.1-1, the typical pulse includes the following steps (TBD during DDP):

I. Between two plasma shots (t<<-40s) each PFC PS is in a steady state shut-down condition, this means:a) H-MG at nominal voltage and nominal stand-by speedb) all AC HV circuit breakers/disconnectors open (if requested)c) all DC disconnectors open (if requested)d) all thyristor converter blockede) no reference signals from PS SCf) water cooling system in nominal operating conditions and under monitoringg) auxiliaries voltages at nominal values and under monitoringh) compressed air (if present) at nominal value and under monitoring



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i) safety interlock signals ok and under monitoringj) no alarm/fault signals and situation under monitoring

II. Just before premagnetization (in the standard scenario, t<-40s), PS SC:a) closes all AC HV circuit breakersb) checks “ready to operate” condition in each PFC PS (above points a-j ok)

III. Starting premagnetization (in the standard scenario, t=-40s) PS SC:a) unblocks CS1, CS2, CS3 and CS4 thyristor convertorsb) sends the proper load voltage/current reference signals to all thyristor convertors c) monitors the sequence status and alarm/faults for each PS

IV. At t=-10s : Base PS converters EF1 and EF6 are unblocked (in the standard scenario) and Booster PSs are also activated simultaneously.

V. At t=0s (typically), a voltage step (typically 5kV) across each coil is needed to generated a di/dt load current to induce plasma current breakdown in the JT-60SA vacuum chamber. As this voltage value exceeds PS capability (ref. Table4.4.2-1) , it shall be generated by inserting in the circuit:

a. proper resistors by fast Switching Network Units (SNU) for CS1, CS2, CS3, CS4 PSs b. Booster Units for EF1 and EF6 PSs , able to provided the requested voltage.

Both SNUs and Booster units are by-passed as soon as the requested voltage across the coil comes again inside the PS capability limit and, in any case, for SNUs, before load current zero cross.Both SNUs and Boosters are not included in the present procurement.

VI. Regulating the PS current following the reference signal during the plasma shot

VII. Ending of the plasma shot (typically from t = +130s),.

VIII. Decreasing the PS current to zero in about 40s.

IX. PS SC set again the system in a steady state condition (point I, above)

It has also to be underlined that Quench Protection Circuits (QPCs), not included in the present procurement, are by-passed during a normal pulse. They are operated to protect each superconducting coil in case of internal quench ( when the coil is not longer superconducting and becomes normal conducting). QPCs includes in the circuit an additional resistance to generate a fast ramp down of the load current. At the nominal current, the QPCs resistance generate a voltage drop of about 5kV. In any case, together with QPC operation the converter current ramp-down and the crowbar operation shall be always required.

The Industrial Supplier shall demonstrate, also on the basis of his own experience, the PS ability to properly perform the above indicated operation,. The proposed design shall be discussed and agreed with the Customer during the Detailed Design Phase..

-25

-20

-15

-10

-5

0

5

10

15

20

25

-50 0 50 100 150 200CS1

CS2CS3

CS4 -15

-10

-5

0

5

10

15

20

25

-10 -5 0 5 10 15 20

CS1

CS2

CS3CS4

-20

-15

-10

-5

0

5

10

15

20

-50 0 50 100 150 200

EF1EF2

EF3EF4EF5

EF6 -20

-15

-10

-5

0

5

10

15

20

-10 -5 0 5 10 15 20

EF1

EF2EF3EF4

EF5EF6



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Fig. 4.4.3-1 2 Typical PF coils Current scenario (ref. Table 1.2-2 in PID)

4.4.3.1. CS1, CS2, CS3 and CS4 PFC PS converters operating mode

As shown in Figure 4.4.1.-1 these PSs are fed through already existing 30MVAx2 units transformers (CS1 and CS4 PSs), or by new transformers included in the present procurement (CS2 and CS3 PSs). Each PS unit is composed by two 10kA, 6-phases thyristor bridges indicated as Converter 1 and 2, respectively. In order to maintain a minimum level of current in converters and avoid having a time delay in reversing current direction, 3 operating modes are needed for the PF PS (Figures 4.4.3.1-1) :

- circulating current modesingle mode- dual mode

Transition mode area will be finally fixed in the DDP.

DUAL MODE

-1 kA

+1 kA

-5 kA

+5 kA

t

1 kA

I coil

Transition mode area

DUAL MODE

SINGLE MODE SINGLE MODECIRCULATING CURRENT MODE CIRCULATING CURRENT MODE CIRCULATING CURRENT MODE

Fig. 4.4.3.1-1 CS1, CS2, CS3 and CS4 Converter Operation Modes with respect to Load Current



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In Figures 4.4.3.1-2 and 4.4.3.1-3 the 3 operating modes are described showing the current path in the converters according to operation mode

1 3 42 5 6

7

9

8

10

Transition: A

Transition: B Transition: C

Transition: D

Transition: E Transition: F

Transition: G Transition: I

Transition: J Transition: K

Transition: L

Transition: M Transition: N

Transition: H



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Fig. 4.4.3.1-3 Synthesis of the converter operation modes

As already reported, the PS SC will distribute load voltage/current reference waveforms. To properly operate the converter in the above mentioned modes, suitable internal reference signals for Conv. 1 and Conv.2, respectively, have to be generated. The action to generate the internal reference signals starting from those ones distributed by PS SC is under the Industrial Supplier responsibility, on the basis of his own experience. Figure 4.4.3.1-4 shows possible internal current references. A proposal shall be provided by the Industrial Supplier and discussed/agreed with the Customer during the Detail Design Phase.

State 1Parallel converteroperation (forward)

State 2Single converter

operation (forward)

State 3Circulating currentoperation (forward)

State 4Circulating currentoperation (reverse)

State 5Single converter

operation (reverse)

State 6Parallel converteroperation (reverse)

State 7Circulating currentstop mode (forward)

State 8 Circulating currentstop mode (reverse)

State 9Parallel -> Single

change mode (forward)

State 10Parallel -> Single

change mode (reverse)

Current

Fig. 4.4.3.1-2 Current path inside the converter during different operation modes

CONV N°1 CONV N°2

Forward operation mode Backward operation mode

Iconv1 (kA)

Id (kA)

+6.0

Threshold width0

Current ramp upCurrent ramp down

+5.0

+5.0 +6.0-5.0-6.0Threshold width

+10

+20-20

-10

-2.5-3.0

Iconv2 (kA)

Id (kA)

-6.0

Threshold width0

-5.0

-5.0-6.0 +5.0 +6.0Threshold width

-10

-20+20

+2.5+3.0

+10

Fig. 4.4.3.1-4 Possible Internal Current references of Conv 1 and Conv 2

Current ramp down

Iconv1 (kA)

Id (kA)

Threshold width

0

Current ramp up

Threshold width

Iconv2 (kA)

0

+1.0 +2.0

Threshold width

+1.0 +2.0-1.0-2.0

+2.0

+3.0

-1.0-2.0

-3.0

-2.0

Id (kA)

Threshold width-1

+1



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t-1 kA

+1 kA

-5 kA1 kA

DUAL MODESINGLE MODE

SINGLE MODECIRCULATING CURRENT MODE CIRCULATING CURRENT MODE CIRCULATING CURRENT MODE



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4.4.3.2. EF1 and EF6 PFC PS converters operating mode

As shown in Figure 4.4.1-1, these PS are fed through already existing 30MVAx2units transformers and are composed by two units : the first composed by two 10kA, 6-phases thyristor bridges (Converter 1), the second one composed by only one 10kA, 6-phases thyristor bridge (Converter 2).Figures from 4.4.3.2 - 1 to 4.4.3 - 4 are reported with the same meaning of the respective ones in Section 4.4.3.2.Transition mode area will be finally fixed in the DDP.

I coil

Transition mode area

Fig. 4.4.3.2-1 EF1 and EF6 Converter Operation Modes with respect to Load Current

CONV N°1 CONV N°2

2 31 4 5

6 7

8

Transition: A Transition: D

Transition: E Transition: F

Transition: G

Transition: H

Transition: I

Transition: J Transition: K

Transition: L

Transition: M Transition: N

Fig. 4.4.3.2–3 Synthesis of the converter operation modes



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Fig. 4.4.3.2-2 Current path inside the converter during different operation modes

State 1Single converteroperation

(forward)

State 2Circulating

currentoperation (forward)

State 3Circulating

currentoperation (reverse)

State 4Single

converteroperation (reverse)

State 5Parallel

converteroperation (reverse)

State 6Circulating

currentstop mode (forward)

State 7 Circulating

currentstop mode (reverse)

State 8Parallel ->

Singlechange mode (reverse)

Current

Fig. 4.4.3.2-4 Possible Internal Current references of Conv 1 and Conv 2

Current ramp down

Iconv1 (kA)

Id (kA)

Threshold width

0

Current ramp up

Threshold width

Iconv2 (kA)

0

+1.0 +2.0

Threshold width

+1.0 +2.0-1.0-2.0

+2.0

+3.0

-1.0-2.0

-3.0

-2.0

Id (kA)Threshold width-1

+1

Iconv1 (kA)

Id (kA)

0

Current ramp upCurrent ramp down

-5.0-6.0Threshold width

+10

+10-20

-10

-2.5-3.0

Iconv2 (kA)

Id (kA)

-6.0

Threshold width0

-5.0

-5.0-6.0

-10

-20+10

+2.5+3.0



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4.4.3.3 EF3 and EF4 PFC PS converters operating mode (out of scope)

---- OMISSIS ----

4.4.3.4 EF2 and EF5 PFC PS converters operating mode (out of scope)

---- OMISSIS ----

4.4.4.Thyristors cubicle design

Thyristor converters shall be designed in agreement with IEC standard 60146.Selection of operating current and voltage of the thyristor valves, and related safety margins, as well as of its gating, cooling and clamping procedures shall be performed fully in agreement with thyristor’s manufacturer recommendation and related application notes. This shall be demonstrated by the Industrial Supplier in the First Design Report (ref. section 9.3.1).All CS1-4, EF1 and EF6 PSs are 4 quadrants converters with circulating current.The Industrial Supplier shall propose a reference design (thyristor type, using fuse or fuseless, layout, IP code…) on the basis of his current practice, fully complying with the present specifications and with all IEC relevant standards. In particular:

the mechanical structure of the cubicle shall be demonstrated to withstand the most severe electromechanical stressed deriving by the most demanding conditions,

in case of thyristor explosion, this must be confined inside the cubicle without any risk for operators, crowbar cubicle shall comply with seismic requirements (ref. Section 11.2) such as internal DC feeders to

allow a continuous circuit till the current goes down to zero.

4.4.5.Transformers

New transformers are required only for CS2 and CS3 coils power supplies.The main characteristics foreseen for CS2 and CS3 PF PS transformers are shown in Table 4.4.5-1.

Table 4.4.5-1 Reference design Parameters for CS2/CS3 PS transformers CS2/CS3 Transformer Main Parameters Value

Type Three windingsWinding Electrical Connections Ddy11RMS Current at each secondary winding (kA) 8,16Voltage Ratio (kV/kV) 18/ 0,96Z12,13 (%) at 77,6 Hz TBD by the Industrial SupplierZ23 (%) Magnetically decoupledFrequency Operating Range (Hz-Hz) 77,6-54,2Rated withstand voltage (Testing voltage to ground) on factory (kV RMS/50Hz/1m)

Primary side: 50Secondary side: 20 (*)

Rated lightning impulse withstand voltage 125kVpeak on primary side.Not applicable on secondary side.

Voltage class IEC 60076-3Duty Cycle (s/s) 250220/1800(*) Reference IEC 60076-3 voltage 7,2kV due to 5kV voltage during QPC/SNU operation



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The Industrial Supplier can propose a design solution different from the reference one. Moreover in this case, the Industrial Supplier shall prove the convenience of the alternative solution proposed which shall be evaluated and approved by the Customer before to be adopted. In any case the transformers have to be complying with IEC 60076 and IEC 61378 for design, construction and tests. In particular the following points have to be noticed:

a single electrostatic screen shall be located between primary and secondary windings of the transformer. This has the double scope to reduce stray capacitance and to prevent any contact between the windings in case of insulation failure. For this reason the screen has to be grounded;

transformer case shall be protected against possible oil overpressure with suitable apparatus to prevent any risk for the operators and the other nearby apparatus; the Industrial Supplier shall demonstrate it during DDP;

HV and LV transformer connections shall be protected with an IP52DH (Sections 4.2.12) enclosure. For the noise limit see Section 4.2.7;

taking into account that the transformer could be transported by sea, its case and all external components shall be properly painted/arranged in order to withstand sea environmental conditions without problem; the Industrial Supplier shall demonstrate it during DDP

At least, each transformer shall have the follow protective/monitoring devices :

Over current vs time relay Thermal relay Buchholz relay Temperature monitor - indicate temperature in the transformer’s topmost oil layer with maximum and

minimum signal contacts Oil level alarms Oil flow indicator (in the case of forced oil circulation ) Airflow indicators (only for fan cooled transformers)

4.5. FPPC coils power supplies

Two separate PS have to be procured separately for FPPC upper and lower coils. These PS have the function of controlling vertical and horizontal position of the plasma against small plasma perturbation or a minor disruption. To maximize the control range with small cross section of the in-vessel lower and upper control coils, a 12 pulses / 4 quadrant / circulating current thyristor converter is required. These PSs are in operation during the plasma shot (phases V- VIII in section 4.4.3)The reference scheme for each one of the two FPPCC PSs is shown in fig. 4.5 – 1:

Fig 4.5–1 Reference scheme for each one of the two FPPC coil PSs

-5

0

5

10

15

20

25

0 1 2 3 4 5 6 7

Currents in FPPC coils (23 turns)(30ms current quench at down ward VDE)

IFPCC1[kA] IFPCC2[kA]

Cur

rent

(kA

)

time(s)



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4.5.1.Performance and operational requirement

The main reference design parameters of FPPC PSs are summarized in Table 4.5.1-1.In addition it has to be noted (ref. section 4.5.3) that an electrostatic screen shall be located between primary and secondary windings of the transformer. This has the double scope to reduce stray capacitance and to prevent any contact between the windings in case of insulation failure. For this reason the screen has to be grounded. The Industrial Supplier shall take care of it during the design of the entire FPPC PS.In the case of major plasma disruption an overcurrent (to be added to the normal operating current) will be induced in the FPPCs with a maximum, estimated value of ~21 kA (Figure 4.5.1-1). This current is not expected to flow inside the thyristor converters as crowbar unit is expected to be operated (ref. section 4.2.22) or automatically or following a command from the SCSDAS (TBD during DDP). As a general rule, in case of protective procedure in one of the two FPPCC PSs, the same procedure could be activated, through a field-to-field command also in the other.(TBD during DDP)

The main characteristics of each one of the two FPPC PSs are summarized in Table 4.5.1-1

Table 4.5.1-1 Reference Design Parameters for FPPC PSs

Figure 4.5.1-1 Estimated induced current inside upper/lower FPPCs

FPPC PS Main Parameters ValuesVdc0(kV) (*1) 2*(±0,5)Idc (kA) ±5.0Duty cycle (s/s) 140/1800Current accuracy (%) (*2) ±1Insulating voltage to ground 2kVdc (TBC)Testing voltage to ground on factory 5 kV dc (TBC)Operation 4 quadrantPulses 12Converter cooling system Demineralized water(*1) no load voltage(*2) Referred to nominal value



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4.5.2.Thyristor cubicle design

Thyristor converters shall be designed in agreement with IEC standard 60146. Selection of operating current and voltage of the thyristor valves, and related safety margins, as well as of its gating, cooling and clamping procedures shall be performed fully in agreement with thyristor’s manufacturer recommendation and related application notes. This shall be demonstrated by the Industrial Supplier in the First Design Report (ref. section 9.3.1).FPPC PS are demineralised water cooled, 4 quadrants, 12 pulses converters (with circulating current),including crowbar unit.The Industrial Supplier shall propose a reference design (thyristor type, fuse or fuseless, layout, IP code…) on the basis of his current practice, fully complying with the present specifications and with all IEC relevant standards. In particular:

the mechanical structure of the cubicle shall be demonstrated to withstand the most severe electromechanical stressed deriving by the most demanding conditions,

in case of thyristor explosion, this must be confined inside the cubicle without any risk for operators, crowbar cubicle shall comply with seismic requirements (ref. Section 11.2) such as internal DC feeders to

allow a continuous circuit till the current goes down to zero.

4.5.3.Transformers

New transformers are required for FPPC upper and FPPC lower coils power supplies.The main characteristics foreseen for FPPC-upper and FPPC-lower PS transformers are shown in Table 4.5.2-1.

Table 4.5.3-1 Reference Design Parameters for FPPC PSs Transformers

The Industrial Supplier can propose a design solution different from the reference one. Moreover in this case, the Industrial Supplier shall prove the convenience of the alternative solution proposed which shall be evaluated and approved by the Customer before to be adopted. In any case the transformers have to be complying with IEC 60076 and IEC 61378 for design, construction and tests. In particular the following points have to be noticed:

a single electrostatic screen shall be located between primary and secondary windings of the transformer. This has the double scope to reduce stray capacitance and to prevent any contact between the windings in case of insulation failure. For this reason the screen has to be grounded;

in case of oil insulated transformer, the transformer case shall be protected against possible oil overpressure with suitable apparatus to prevent any risk for the operators and the other nearby apparatus; the Industrial Supplier shall demonstrate it during DDP;

HV and LV transformer connections shall be protected with an IP52DH (section 4.2.12) enclosure;

FPPC PSs Transformer Main Parameters Value

Type Three windingsWinding Electrical Connections Ddy11RMS Current at each secondary windings (kA) 4Voltage Ratio (kV/kV) 18/ 0,39Z12,13 (%) at 77,6 Hz TBD by the Industrial SupplierZ23 (%) Magnetically decoupledFrequency Operating Range (Hz-Hz) 77,6-54,2Rated withstand voltage (Testing voltage to ground) on factory (kV RMS/50Hz/1m)

Primary side: 50Secondary side:10

Rated lightning impulse withstand voltage 1 125kVpeak on primary sideVoltage class IEC 60076-3Insulation medium Oil/dry transformer type (TBD)Duty Cycle (s/s) 140/1800(1) Not applicable on the secondary side. Not applicable in case of indoor installation

Power Supply Procurement (EU)

Power Supply Procurement (JA)

Other Procurement (EU)

Other Procurement (JA)

Coil Terminal Box

TF Coil

CS

EF Coils

JT-60 HV AC Power Supply**

JT-60 Auxiliary Power

WaterCooling****

*includes grounding, physical attachment, enclosure, ventilation or air conditioning

Com-pressed Air*****

Building*

** including some step-down transformers and related secondary power connections***air-cooled**** including both demineralised water and raw water***** shall be provided to demanding devices

Tr. CS2,3

Tr.Error Field Correction Coil Power Supplies

FPPC Coil Power Supplies Tr.

TF Coil Thyristor Power Convertor

TF Coil Quench Protection Circuits

PF Coil Quench Protection Circuits

Switching Network Units for CS1-4

Base PF Coil Thyristor Power Convertors

Booster Power Supplies for EF1-2,5-6Tr.

Tr.

Vessel Cryostat

Quench Detection Centre

Magnet PS Control System

Internal Protection System

Human Safety Interlock System

SCSDAS

Global Protection System

Human Safety Interlock System

Plant & Discharge Control

Database

Plant & Discharge Control

Tr. CS1,4, EF1-6

Dummy Load***(if necessary)

LCC

LCC

LCC

LCC

LCC

LCC

LCC

LCC

LCCSwitching Network Units for EF3-4

RWM Coil Power Supplies Tr. LCCPort Plug (RWM)

Port Plug (EFCC)

Port Plug (FPPCC)

Terminal at Torus hall

Terminal at Torus hall

Dump Resistors

Fig. 4.6-1 Overall view of interfaces between PS and the other JT-60SA systems



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audible noise shall be limit as indicated in Section 4.2.7; taking into account that the transformer could be transported by sea, its case and all external components

shall be properly painted/arranged in order to withstand sea environmental conditions without problem; the Industrial Supplier shall demonstrate it during DDP

At least, each transformer shall have the follow protective/monitoring devices : Over current vs time relay Thermal relay Buchholz relay Temperature monitor - indicate temperature in the transformer’s topmost oil layer with maximum and

minimum signal contacts Oil level alarms Oil flow indicator (in the case of forced oil circulation ) Airflow indicators (only for fan cooled transformers)

4.6. PS interfaces requirementsFigure 4.6-1 shows the interfaces of each unit of PSs coils with respect to the other parts of JT-60SA systems. In the scheme interfaces are represented with circles. The colours of the interfaces indicate the respective procurement responsibility. The colour of the line which connects two interfaces indicates the organisation providing the physical connection between the interface points.

Electrically, each Power Supply (PS) will interface with the following items:

1) PFC,TFC and FPPC coils;

2) Quench Protection Circuits (QPC)

3) Switching Network Units (SNU)

4) Booster PSs

5) the ac HV distribution systems;

6) the ac LV distribution system;

7) the dc voltage distribution system;

8) the grounding network.

Moreover, each PS will be interfaced with auxiliaries systems as:

1) the compressed air distribution system;

2) the site water cooling system;

3) the building and the respective facilities

Each PS will include also a Local Control Cubicle (LCC), which will exchange signals with:

1) the JT-60SA supervising control system (SCSDAS via PS SC);

2) the Global Protection System (GPS via PS IPS) for the protection and alarm detection signal.

3) The safety interlock system via PS SIS

4) QPC (in the case of converter fault)

5) HV breaker on primary side of transformers (in the case of converter fault)



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4.6.1.Interfaces with other units of the dc power circuit

The interface between each PS and the respective other power units (SNU, QPC, Booster, etc.) is identified by the connection of the cables / busbars to the PS power terminals.The Industrial Supplier shall provide the PS power terminals.JAEA provides the power cables / busbars which connect the other power units to the PS and connects them at the PS power terminals. The position and the features of the PS power terminals shall be agreed between the Industrial Supplier and the Customer during DDP.

4.6.2.Interfaces with APS low voltage distribution system

The Auxiliaries Power Supplies (APS) of the power and control sections of each PS shall be fed from the JAEA Low Voltage Distribution System (Section 11.3 ), which provides Normal and Un-interruptible ac & dc APS. The electronics of both LCC and power section will be supplied by the Un-interruptible APS of the JAEA Low Voltage Distribution System, such that the PS operation is assured even in case of total or partial loss of mains voltage. The maximum power to be requested to the APS is defined in table 4.6.2-1.

Table 4.6.2-1 Available power for APSAvailable power for each PS Total available power

400 V AC normal APS (kVA) 10 130 kVA

400 V AC Un-interruptible APS (kVA) 1.5 19.5 kVA

100 V DC Un-interruptible APS (kW) 2 26 kW

The Industrial Supplier shall declare within the end of the design phase if higher power is required to the Un-interruptible APS (ac and dc) and Normal APS.The interface between the PSs and the JAEA ac low voltage distribution system is identified by the connection of the low voltage supply cables to the PS terminals. The Industrial Supplier shall provide the PS internal distribution of the low voltage supply. JAEA provides the low voltage distribution board including the circuit breakers; provides and lays down the low voltage supply cables up to the PS and terminates them at the PS cubicles.

4.6.3.Interfaces with the compressed air distribution system

The JAEA compressed air distribution system is described in Section 11.7Other requirements are reported in section 4.2.24.The Industrial Supplier shall identify the requested needs of compressed air within the end of the DDP.The interface between each PS and the compressed air distribution system is identified by the termination of the pipes in the PS CB cubicle. Termination type shall be defined by JAEA within the end of the DDP.If needed, the Industrial Supplier shall provide the PS internal circuit for compressed air and the pipes for the connection to the JAEA local distribution system.In this case, JAEA provides pipes close to the PS CB cubicles and makes the connection between the local compressed air distribution system and the PS pipes.

4.6.4.Interfaces with the site water cooling system



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JAEA will provide raw cooling water and demineralised cooling water for Aluminium components with the characteristics reported in Table 4.6.4-1 (ref. to PID section 2.7). If the Industrial Supplier will use the JAEA demineralised cooling water (JAEA cooling), the materials used in the part of the cooling system provided by the Industrial Supplier shall be approved by the Customer, depending on the material compatibility allowed by the JAEA water cooling system. During the DDP of the contract, the Industrial Supplier shall agree with the Customer the list of materials to be used in the part of the water cooling system which the Industrial Supplier will provide.If the Industrial Supplier provides an internal closed loop water cooling circuit (internal closed loop cooling) this will be connected through an heat exchanger to the JAEA water cooling system. The expected cooling requirements to be requested to the JT-60SA water cooling system for each PS (included CB and interphase reactors) unit are:

Table 4.6.4-1 Main characteristics of demineralised water for Aluminium Components

Total flow rate (Q) available for each one of CS1-CS4, EF1 and EF6 PSs

24m3 /h

Total flow rate (Q) available for each one of the two FPPCS PSs

21m3 /h

Water input temperature (Tin) during operation 20°C ≤ Tin ≤ 35°CInput water minimum temperature (in transient situation such as during start-up period)

≥5°C

Max. temperature variations (Tin,out) 10°CWater input pressure (Pin) 450 kPa ± 100 kPaMax. pressure fall (Pin,out) 250 kPaWater resistvity () ≥ 1M*cm @ 45 °CType of water pipes Stainless Steel (TBC)

For each one of the 8 PSs included in the present procurement ( 4 CS Coils PSs, 2 EF Coils PS and 2 FPPC Coils PS), the expected losses to be cooled down by the demineralised water cooling system are estimated as 250kW. In specific cases, the Industrial Supplier can indicate in his offer if a higher cooling power is requested specifying, at the same time, the reason and the preliminary estimate. The final value shall be agreed with Costumer during DDP.The boundary between PSs and JT-60SA water cooling systems is defined by two terminations per converters, made with flanges (to be defined by JAEA within the end of the design phase), for inlet and outlet water cooling respectively. Such flanges shall be placed on each PS, in a position to be defined, in agreement between Customer and Industrial Supplier, during the DDP of the contract.The Industrial Supplier shall provide the PS internal cooling circuit and the termination flanges for each cubicle. JAEA provides the water cooling pipes connecting the PSs, with the respective flanges, and connect them to the flanges provided by the Industrial Supplier.

4.6.5.Interfaces with the grounding network

Grounding indicates the connection point/bus to the earth grid of the site. The Industrial Supplier will be informed on the main characteristics of the JT-60SA grounding system during the DDPThe interfaces between the PS internal grounding system and the JAEA grounding network are the ground terminal in each PS converter.The Industrial Supplier shall provide the ground network inside each PS converter and the earth terminals for each cubicle, including the terminal of the ground resistor jointed at the mid-point of each CB of each PS. The type of termination shall be agreed with the Customer during the DDP.JAEA will connect the ground terminal of each PS converter to the closest terminal of the ground network of the building.



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4.6.6.Interfaces with the JT-60SA Control and Protection System

Document in Ref.5 reports a detailed analysis of the top level architecture of the JT-60SA control/protection system and a preliminary detailed list of status/command/alarm and measurements signals. Document in Ref. 6 reports the expected allocated memory in the Reflective Memory Loop (see below).Fig.4.6-2 shows the general signal interface between PS and JT-60SA control system. Each PS is directly interfaced with the Power Supply Supervising Computers (PS SC, not included in the present procurement) composed by the following main blocks:

Plant control computer Real-time controller Discharge control computer Local Internal Protection System (IPS) Local Human Safety Interlock System (SIS)

The PS SC is connected with the JT-60SA Supervisor Control System Data Acquisition System (SCSDAS). The connection between the PS units and PS SC is basically performed by the Power Supply Internal Reflective Memory (RM) Loop; while the PS SC is connected with SCSDAS through the SCSDAS Main RM Loop. Reflective Memory type GE FANUC PMC-5565 PIORC (VMIPMC-5565) is requested.

Figures.4.6-3a-c show these connections with the example of CS1 PS circuit.

Four types of signals can be defined in relation to the type of connections: Signals transmitted through RM Signals transmitted through optical links (single signals or encoded signals) Hardwired protection commands ETHERNET link that will be made available by the Industrial Supplier to access his CPU(s) Controller(s)

only for process control and trouble-shooting. This connection should be made available using only standard communication ways and software interfaces.

PS SupervisingComputers

(provided by JA)JT-60SA SCSDAS(provided by JA)

Local ControlCubicles in PScomponents

(provided by EU)

Real-timeController

Plant ControlComputer

DischargeControl

Computer

IPSSIS

GPSSIS

(Relay logic)

EquilibriumControlSystem

Plant ControlWS

DischargeControl WS

RM RM

TimingSystem

HVCB: AC breakers,Motor Generators(provided by JA)

RMDI

CPUDO

RM

Signals

Fault, SafetySignals

Commands Fault, Safetycommands

Clock TimeSignal

Reference,Control

commandStatus,

Measured,Alarmdata

PlantStatusdata

Status,Measured,

Alarmdata

Reference,Control

command

Control,Statusdata

MessageCommuni-cation

(TCP/IP)

Base PSSNU

QPCBooster PS(JA)

HVCB OFFcommands

(TBD)

RM



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Fig.4.6-2 : General signal interface diagram between JT-60SA PS units and JT-60SA control system

CP

UA

/D DI

DO

RM Base PS Local

Control Cubicle

CP

UA

/D DI

DO

RMSNU Local

ControlCubicle

CP

UA

/D DI

DO

RM QPC Local

ControlCubicle

CP

UA

/D DI

DO

RM CS1

PS Controller

RM

Protectioncommands

Fault signals

QDCQPC activation

command

JAHT

EUHT

Control commands,status, measured,

alarm data

IPSSIS

PS Supervising Computers

Ethernet (*1)

(*1) Ethernet is used for memory/CPU check, maintenances, etc.

to/from others

Fig. 4.6-3a

Fig. 4.6-3b



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Fig.4.6-3 : Reflective Memory Loops connecting PS Units with PS SC (a); example of CS1 PS (b)

From the point of view of frequency updating of signal, two types of signals can be identified:

slow signals:

interface with the PS SC, for System Monitoring

interface with the PS SC “Safety Interlock System” (SIS)

fast signals:

interface with the PS SC for Timing, Data Acquisition and Real Time Control Systems

interface with the PS SC “Internal Protection System” (IPS)

Sections 4.6.6.1, 4.6.6.2 and 4.6.6.3 summarises the presently foreseen signals (in line with ref.5) and the related interfaces. Signals included in each table must be understood as one signal for each component for each PS. During the DDP, on the basis of a proposal by the Industrial Supplier, the list of signals and the related interfaces shall be agreed. In general all signals, measurement, status, alarms/fault indication, interlock and command used to operate the PS and needed to define its status, during both commissioning and operation, shall be made available locally and shall be sent to the PS SC. In any case, each signal (alarm/status and measurement…) shall be sent only once to PS SC.

The Industrial Supplier shall provide the suitable termination for the interface to PS SC, IPS and SIS.JAEA will provide the cables / optic fiber to connect the PS SC to PS LCCs and terminate them in the PS LCCs, with

complementary connectors.

4.6.6.1. Slow signals

These signals are typically handled by PLC / Industrial PC; they are slow commands for system configuration, system monitoring including status and alarm visualization, slow measurements and interlock signals for safety. Preliminary requirements for the signal interfaces are given in the following tables; the details shall be agreed with the customer during the relevant DDP. Proposals for different type of slow signals and measurements are listed into the Tables from 4.6.6.1-1 to 4.6.6.1-3. The Industrial Supplier shall propose a reviewed version that will be agreed during the DDP with the Customer.

Table 4.6.6.1-1 - List of commands from PS SC to each PS LCCDescription Type Connection Interface Notes

Block/unblock PS regulators (=0/ =1) logical

Reflective Memory

net

Reflective memory card

Switch off DC disconnectors (=1) logical

Switch on the DC disconnector (=1) logical

PS regulators voltage (=1) / current (=0) regulation mode logical

HV AC Circuit Breakers OFF (=0) logical



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Table 4.6.6.1-2 – List of status monitoring slow signals from each PS LCC to PS SC (included IPS)Description Type Connection Interface Notes

Safety 1 = interlock ok logical

Reflective Memory net


A sum of signals

Local / Remote (0 = local, 1 = remote) logical

AC grounding switch opened/closed (=1/=0) logical

DC disconnector opened/closed (=0/=1) logical

I regulator control mode logical

V regulator control mode logical

Crow Bar opened/closed (=1/=0) logical A sum of signals

DCDS(?) status logical

APS ok (=1) logical

PS, CB and IR water cooling ok (=1) logical A sum of signals

DCDS (?)air pressure ok (=1) logical

PS ready (=1) logical PS ready to run up

Voltage regulation limit (=0) logical When the limit is reached

Current regulation limit (=0) logical When the limit is reached

Table 4.6.6.1-3 – List of slow measurements from PS LCC to PS SCDescription Type Connection Interface Notes



Inlet water temperature Slow, digitalised

Outcome water temperature Slow, digitalised

Inlet water pressure Slow, digitalised

Outcome water pressure Slow, digitalised

Air compressed pressure Slow, digitalised

The signals between each PS and SIS shall be proposed by the Industrial Supplier and agreed with the Customer during the DDP.

4.6.6.2. Fast Signals



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Proposals for different type of fast signals and measurements are listed into the Tables from 4.6.6.2-1 to 4.6.6.2-4. The Industrial Supplier shall propose a reviewed version that will be agreed during the DDP.

Table 4.6.6.2-1 – List of status and alarm monitoring signals from each PS LCC to PS SC (included IPS)Description Type Fullscale Connection Interface Notes

Alarms: fault code Fast, digital Encoded


orOptical Link


A table links a list of numbers

with alarms/warnings

In case of fault or improper PS operation, a proper fault code shall be sent to PS SC (IPS). Such code shall be sufficient to identify the kind of fault or improper operation, the PS converters involved, and the specific PS component implicated (if it is the case). The fault code shall be linked to a fault list which shall consider at least the faults indicated in Table 4.6.6.3-1.

Table 4.6.6.2-2 – List of alarms / commands / status from PS SC (included IPS) to each PS LCC Description Type Type Connection Interface Notes

Stop sequence for PS shutdown Fast, digital ON/OFF


Reflective memory cardExternal alarm for PS shutdown

and crowbar operation Fast, digital ON/OFF List DDP

Emergency for PS shutdown and crowbar operation (TBD

during DDP)Fast, digital ON/OFF

HV AC Circuit Breakers OFF Slow, digital ON/OFF Reflective Memory net


One signal for each CB

Table 4.6.6.2-3 – List of fast measurements from PS LCC to PS SCDescription Type Connectio

nInterface Notes

DC current Fast, digitalised Reflective Memory

net


DC voltage Fast, digitalisedAC current from TransformerFast, digitalised Only on secondary sideAC voltage from TransformerFast, digitalised Only on primary side . Existng voltage transducer will be

reused if needed. In case of new volt. Trasducer shall be provided by the supplier but installed by JAEA.

Circulating current Fast, digitalisedForward PS branch currentFast, digitalised On each bridgeBackward PS branch current Fast, digitalised On each bridgeGrounding resistor currentFast, digitalisedCB currents in both static crowbar and MS

Fast, digitalised On both positive and negative sides

The measurements shall be available in the LCC with the accuracy of 1% referred to nominal value The bandwidth for the transmission to PS SC will be around 3 kHz which will be defined during the DDP.

Table 4.6.6.2-4 - List of fast references/signals from PS SC to PS LCCDescription Type Connection Interface Notes

DC current referenceFast, digitalised Reflective Reflective memory



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Memory net

cardDC voltage referenceFast, digitalised

Syncronization voltages from transformers primary side

Fast/analogue (TBC) Wiring (TBC)

4.6.6.3. Fault Signals

Table 4.6.6.3-1 contains the list of fast fault signals, which shall be transmitted from the PS LCC to the PS SC in order to inform the IPS of a fault in the PS system. As a consequence, the PS SC IPS:

activates all the suitable protection commands for the rest of the JT-60SA PS System, informs SCSDAS GPS in order to activate all the suitable protection among all the other JT-60SA systems.

The PS Protection shall inform PS SC IPS each time a fault or an improper operation of the system is detected. Such requests shall be organised on the basis of the severity of the detected anomalous operation or fault. The faults will be grouped in a logic “OR” and the resulting signal sent to the GPS which in turn will distribute the suitable protection commands to the plant equipments; In general, the details of the fault detection and protection action shall be discussed, defined, and agreed during the relevant DDP with the Customer.In any case, if applicable, the following general prescriptions shall be observed for protections:

- no single-device failure shall generate a dangerous situation. Such failures shall be detected and suitable

action provided;

- the most important protections shall have a back-up detection system, i.e. a secondary protection chain

relying on different transducers, acting in case the primary protection is not triggered;

- all protection circuits shall be implemented through a fail-safe logic;

- the first alarm due to an internal fault shall be marked by the Control and Protection System, so as to

distinguish it from subsequent alarms and it shall be clearly identified in the Human Machine Interface

(HMI) and to the PS SC.

At least the fault conditions listed in Table 4.6.6.3-1 shall be detected. The following list shall be finalized during the DDP.

Table 4.6.6.3-1 – List of AlarmsAlarm/fault Description

Auxiliary systems/measurement transducers not ok in normal

operation

Auxiliary supply (power supply, cooling, compressed air, …) exceeds the maximum or a minimum threshold and measurement transducers not in normal condition. A sum of signals (Details TBD during DDP)

Minimum AC Voltage The voltage haven’t to fall below a determinate thresholdMinimum AC frequency The frequency haven’t to fall below a determinate thresholdTransformer fault Maximum oil temperature, Bucholtz, overcurrent, oil level, etc A sum of signalsSuppressor bridge fuse A fuse of suppressor bridge (converter AC side) blows (n. signals). A sum of

signalsPS SCR fuse A fuse of Thyristor (PS converters) blows (n. signals). A sum of signals

PS SCR fault Thyristor failure in PS converter (n. signals). A sum of signals

PS Regulator Fault Converter regulator have a own fault or warning

PS Shoot through Two series Thyristors are turned on simultaneously in the same branch



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DC Overcurrent Intervention of current limit threshold

Max. DC current DC current value rises above a maximum limit thresholdMax circulation current (when applicable)

Circulation current above a maximum limit threshold

Max. AC current AC current value rises above a maximum limit threshold

Crowbar operation (positive pole) Static crowbar or MS

Crowbar operation (negative pole) Static crowbar or MS

BOD fault BOD failure. A sum of signals

Crowbar untimely triggering (positive pole)

Static CB shall not be triggered unless activation command is required or the BOD is firing

Crowbar untimely triggering (negative pole)

Static CB shall not be triggered unless activation command is required or the BOD is firing

Inter-phase Reactor maximum temperature

Temperature of the Inter-phase Reactor rises above a maximum limit threshold

In any case an alarm is sent to PS SC IPS to summarise a number of specific signals, these ones have to be showed one by one on the respective cubicles front panel.

4.6.6.4. Hardwired CommandsTable 4.6.6.4-1 summarises the foreseen hardwired commands to be exchanged between PS SC and each PS LCC. Final list as well the type of hardwiring are to be agreed during DDP. These commands are all related to safety/protective actions and duplicate the respective ones transmitted trough the RM loop.

Table 4.6.6.4-1 - List of fast hardwired commands from/to PS SC and PS LCCDescription from to Type Connection Interface Notes

Safety Interlock SIS PS LCC(TBD)

Single hardwired TBD TBD

HV AC Circuit Breaker OFF

PS LCCHV AC CB /PS SC(TBD)

Single hardwired

PS shut down + crow bar operation

PS SC PS LCCSingle hardwired Including reference signal to zero

QPC ON PS LCC or QDC (TBD)

(related)QPC

Single hardwired

4.6.6.5. Measurement

Each LCC shall receive measurements from the transducers placed on boards of the PS power sections together with the status of the transducer itself (ref section 4.2.25). These measurements / status shall be used internally by the Control and Protection System for the purpose of control and protection and shall be made accessible at the LCC for commissioning, testing and troubleshooting purposes.At least the measurement listed in Table 4.6.6.2-3 shall be included.All measurements shall be made available to PS SC for data storage; the interface shall be via Reflective Memory, as already specified in Section 4.6.6;. The final list of measurements, the details of connectors’ type in the LCC for the local measurements and the interfaces with PS SC shall be agreed with the customer during the DDP.



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4.6.6.6. PS internal signal connections

The Industrial Supplier shall connect the PS devices to the LCC, so that at least all the commands, status and measurements listed in this Section 4.6.6 and in Sections 4.2.18 and 4.2.24 shall be exchanged between the PS power sections and the LCC.For each of these connections, the Industrial Supplier shall provide the material, the installation, the heading (including labelling) and connections to the terminal boards.For each of these connections the Industrial Supplier shall provide and install also the related cables trays.Cabling and optical fibres shall comply with the requirement reported in Section 4.2.17.The insulation level of connecting cables and cable trays shall be consistent with the components they connect to and with the insulation level foreseen in the insulation tests described in Section 5.The Industrial Supplier shall provide the termination for the interfaces with JT60SA as described in Section 4.6.7 .

4.6.6.7. Special tools and equipments necessary for operation and maintenance

The Industrial Supplier shall provide any special tool necessary for the installation or dismantling of power supplies or part of these (e.g. replacement of a module or of a component inside a module), commissioning (e.g. a printed circuit board simulating faults or measurements) and maintenance.Heavy components shall be equipped with lifting lugs suitable for supporting their weight (in compliance with IEC standards)The Industrial Supplier shall make available all such special tools since the beginning of the installation phase on site. The Industrial Supplier could use special tools during different phases of the Contract; if use reveals defects or potential improvements to a special tool, the Industrial Supplier shall modify or improve its performance. After the Acceptance Tests, the complete set of special tools shall pass under the ownership of JAEA.

4.7. Thyristors converter regulation / Control and protection system

4.7.1.Thyristor convertor regulator

To achieve the requested performance (ref. Sections 4.4 and 4.5), each PS shall include a dedicated regulator. As already mentioned, these PSs can be controlled either by a reference current signal or by a voltage one. In principle, the regulator shall be a digital and programmable unit already well experimented by the Industrial Supplier inside industrial environment. In particular the Industrial Supplier shall demonstrate that the whole regulating system (regulator with its correlated interfaces, measurements, transducers,…) is able to properly operate in a variable frequency range 77,6-54,2 Hz and in the system configuration shown in Section 4.2.1, 4.4 and 4.5. The Industrial Supplier shall include inside each regulator logic all the operational/protective actions needed to achieve the requested performances. In particular, the minimum and maximum firing angle shall not be constant value, but shall be optimised depending on the actual converter current and frequency of AC source voltage.The regulator should operate with different internal cycles : the fastest cycle (<0,5 ms) for protection, the average cycle ( typical 0,5 ms) for the calculation of firing angle updating (total maximum updating time is within the range 1,5-3,6ms depending on the actual AC frequency and on the actual converter operation mode) , the slowest cycle (typical 2 ms) for signal communications and logic.

4.7.2.Control and protection system



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Each PS unit shall include a dedicated Control and Protection System installed in a Local Control Cubicle (LCC) placed close to each power unit.

The Industrial Supplier shall provide Ethernet access to their CPUs of the controller regarding process and trouble-shooting by using only standards way of communication and software interfaces.

4.7.2.1. Local / Remote control modes

The Control and Protection System shall allow operating each PS unit either in “Remote Control” or in “Local Control” mode. A “Remote/Local” key switch shall be provided for each LCC panel to switch between the two modes of operation. The status of Remote/Local shall be monitored from PS SC in any time.Signals from/to Safety Interlock System are not affected by the Local/Remote Control key switch.PS will normally be operated in “Remote Control”, under the control of the PS SC. However, it shall be possible to operate in “Local Control” for the purpose of testing, trouble-shooting and commissioning of each PS.To allow “Local Control” a proper Human/Machine Interface (HMI) shall be available on each LCC including, in particular, a reference generator . In “Local Control Mode” commands from PS SC shall be ignored. In “Remote Control” the PS shall be operated only from the PS SC and any command set locally shall be ignored.In principle, in “Local Control”, it shall be possible to completely operate and monitor the PS unit; moreover, it shall be possible to perform all Site Acceptance Tests as specified in Section 5.4.Precise definition of the PS operation in Local/Remote will be agreed with the Costumer during the DDP on the basis of a proposal by the Industrial Supplier.

4.7.2.2. Function of the protection and the control system

The main functions of the Control and Protection System installed in the LCC are to :

operate the PS units in order to achieve the requirements of this specification and perform monitoring, handling and logging of alarms and collection of data and measurements from the Local Control sub-units;

integrate and complete, if necessary, the action of the converter internal protection ; provide a HMI that permits to supervise the status of each PS as : local testing; trouble-shooting;

monitoring, handling and logging of alarms and collection of data from the PS unit; exchange data and signals with the PS SC, including command / status for the execution of

sequences and measurement for data acquisition; send fault/alarm / safety interlock signals to the PS SC and to receive the related operation

command ;

To comply with this scope, each LCC shall include:

a Human Machine Interface (HMI); the HMI shall allow a friendly high-level man-machine interface with graphic mimics of the PS unit. The related hardware and the specific functions will be agreed with the Customer during the DDP.

Proper programmable devices and related I/O interfaces for proper managing of all slow signals, all commands, all alarm/faults handling, all slow interlocks, local/remote changeover facilities, etc.. Safe Fail (including I/O interfaces) logic shall be used in any case depending on the different signals and the related functions different devices (slow or fast for alarm/fault) can be proposed by the Industrial Supplier. If only one type will be proposed, its performances shall comply with the fastest signals

interfaces with the JAEA SCSDAS through the PS SC as described in Section 4.6.6

4.7.2.3. Protection



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As already mentioned (ref Section 4.6.6.3) converter regulator shall perform protective action of the PS in case of a number of cases (internal fault, overcurrent, , shoot-through,…). There are other alarm/faults event on transformers and/or AC LV side which require the converter shut-down. The Industrial Supplier shall define if all these event will be directly managed by the converter regulator or if part of them will be managed by the LCC. In any case LCC shall include all I/O interfaces. In particular, if it is the case, the discrimination between alarms, faults and the subsequent actions (ref. Section 4.6.6, Reference 3) shall be done.In particular LCC Protection shall inform the PS SC, any time an alarm/ fault or not compliance with safety inter-lock is detected. The final list of alarm/fault will be agreed with the Costumer during the DDP.

4.8. Layout and installation requirements

JT-60SA will be located at JAEA NAKA Fusion Institute. Most of the existing building infrastructure, available for the JT-60U devices, will be re-used for JT-60SA.The Industrial Supplier shall be responsible for all the assembly and installation actions on Site. The Industrial Supplier shall submit an installation plan as described in Section 9.3.3Before the start of the installation phase, JAEA will make available all the areas where the PS systems will be installed. JAEA will make available for the Industrial Supplier the services described in Annex 2 and Annex 4.During the assembly and installation activities, the Industrial Supplier shall apply and follow all the requirements and rules reported in Annex 3 and Annex 4.The characteristics of PS locations are described in Reference Schemes from DWG1 to DWG18DWG13. The drawings report the available areas for installation. The reported sketches of the components are given only for indication.Additional layout drawings of the relevant JT-60SA buildings will be provided by the Customer during the DDP of the contract. Possible revisions made necessary by the development of the design will be agreed as applicable. The information provided will be utilized by the Industrial Supplier to design the PS systems, which shall be compatible with the JT-60SA layout. In particular:

the PSs shall be installed where indicated in the drawings .

the PSs size shall be consistent with the available dedicated areas and shutters as showed in the Reference Schemes.

the maximum height available for all PS devices has to be less than 3.7 meters

the maximum average load to the floors shall be less than : 1000/700 kg/m2 for Rectifier Room (showed in DWG.76) and 1030 kg/m2 for Resistor rooms and 830 kg/m2 for VCB room (showed in DWG.1813). These values shall be confirmed during the DDP. The basement geometry of the devices shall be agreed with the Customer during the DDP.

No crane is available in the areas where the PSs will be installed.

5. TESTING AND APPROVAL REQUIREMENTS

5.1. General requirements

The whole of the provided equipment shall be subjected to inspection and test to prove the compliance with the Technical Specification (TS) during manufacture at the Industrial Supplier’s Facilities, and during erection and on completion at the JT-60SA Site. Tests have to be performed in agreement with the relevant IEC standard (routine tests) and including what is requested in the present section.

The Industrial Supplier shall submit a Site Commissioning Program as described in Section 9.3.4.



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During the testing activities on Site, the Industrial Supplier shall apply and follow all the requirements and rules reported in Annex 3 (Regulations at Naka Site) and Annex 4.

Below is described an outline of the tests to be performed and the relevant test conditions referring to the reference design. The Industrial Supplier shall propose a complete testing plan including modifications and integrations also in relation to his design modification which shall be agreed with the Customer during the DDP. After the completion of the design, during the manufacturing phase of the first unit, the Industrial Supplier shall prepare the procedures of the type tests which shall be delivered at least two months before the starting of the tests itselves. During the manufacturing phase of the remaining units, the Industrial Supplier shall prepare the procedures of the routine tests which shall be delivered at least two months before the starting of the routine tests. The test procedures shall be approved by the Customer.

The Customer and/or F4E and/or JAEA representative, and/or the Project Leader or their delegated persons, may witness all the Type and Routine Factory Tests; the Customer shall be informed about the relevant dates at least two weeks before their occurrence.

Within 30 days after the successful conclusion of each test, a report shall be prepared by the Industrial Supplier and submitted to the Costumer for approval. This report shall include all records, certificates and performance curves performed during testing procedures. These test records, certificates and performance curves shall be supplied for all tests, whether or not they have been witnessed by the Customer.

Factory Tests (ref Sections 5.3 and 5.4) shall be performed on each unit of PFC PS and FPPCC PS depending on their configuration type.

Site Acceptance Tests (ref. Section 5.5) shall be performed on the whole system and shall be aimed to verify the equipment insulation and the coordinated performances of the equipments.

Before any equipment is packed or dispatched from the Industrial Supplier’s or the Sub-Industrial Supplier’s works, all Factory Tests shall have been successfully carried out in the presence of a Customer representative, unless otherwise agreed.

Any item of equipment or component which fails to comply with the requirements of this specification in any respect or at any stage of manufacture, or test, shall be rejected by the Customer either in whole or in part as the Customer considers necessary. After adjustment, modification or repair if so directed by the Customer, the Industrial Supplier shall submit the item for further relevant inspection and/or tests and the whole cost of the complete test shall be provided by the Industrial Supplier.

Equipment or components with defects of such a nature that the technical specification’s requirements cannot be fulfilled by adjustment or modification, shall be replaced by the Industrial Supplier and tested again at his own expense to prove the compliance with the TS.

The Industrial Supplier shall responsible for the provision of all test equipment, measuring and recording instrumentation and personnel. Measuring equipment shall be proven to be recently calibrated (at least once a year) at the expense of the Industrial Supplier.

Approval of any test by the Customer does not relieve the Industrial Supplier from their obligation to meet the requirements of the specification.

5.2. List of Factory TestsThe table shown below summarizes the Factory Tests which shall be carried out on the supply of the present TS (Table 5.2-1):

Table 5.2-1 : Summary of Factory TestsTest

Device

General Inspection conform with TS

Insulating Seismic Functional

Specific test (describe

below) Load Test

CB Resistors X X X

Interphase X X X (in case of



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Reactors saturable inductor)Cables X X

Optical Fibres X

Demineralised water distribution

X X X X

Cubicles X X X (only for crowbar units )

X

Converter AC connections

X X

Crowbar units X X X X X

DC Disconnectors X X X

Compressed air X X (only for crowbar units)

X

PFC Power Unit X X X X X

FPPCC Power Unit

X X X X X

Command Control X X X

5.3. Factory Test of Power Supplies Units

On each PS, type tests and routine tests shall be made in agreement with the relevant IEC Standards. In the following, additional Factory Tests are described for different components used in the different type of power supplies. These tests are necessary to validate both the design and the functionality of PFC and FPPC PS. It will be possible to agree to perform the Factory Tests (different than load test) for that component only one time. In that case the most stringent test requirements shall be applied.

Type Tests shall be carried out in the Industrial Supplier’s works (or the works of their Sub-Industrial Supplier) unless this is not possible. In this case they shall be carried out in another suitable test facility agreed between the Customer and the Industrial Supplier.

The equipment supplied under this contract shall be subjected to type tests as specified in both the relevant IEC Standard and this specification. In the event of the Industrial Supplier supplying certified copies of type test certificates covering equipment of identical design, rating and construction, the Customer shall evaluate to waive such tests.

5.3.1.PS Thyristors Cubicle

The Power Supplies shall have to be in compliance with the technical specification and verify the following tests.

These tests shall make it possible to validate the Power Supplies taking into account each configuration.

a) Test to verify the withstand voltage to ground

Withstand voltage to ground tests shall verify the voltage insulation capability of PS components complying with Tables 4.4.2-1, 4.4.5-1, 4.5.1-1, 4.5.3-1 and taking into account Reference 2.



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b) Test to verify the Power Supply Performances DC

The following tests shall be carried out to validate the electrical rating:

DC currents capabilities (ref. Tables 4.4.2-1 and 4.5.1-1). These tests should be performed in the nominal operating conditions. In the case the Industrial Supplier’s factory has not the electrical power capability to perform full power test, current capabilities shall be demonstrated on the PS in DC short circuit configuration.

Functional load test (ref. Sections 4.4, 4.5), these tests should be performed in nominal operating conditions. In the case the Industrial Supplier’s factory has not the electrical power capability to perform full power test, functional test shall be performed at reduced current. In any case, a reference signal such to fully validate the function and the configuration of the back to back thyristors shall be used and validated by the customer.

DC current ripple : in circulating current (to check the design of the Industrial Supplier), Thermal camera test (to check the thermal design of the PS and its structure including

electrical power connections), Total Power losses (to check the design of the Industrial Supplier), Noise level

c) Test to verify the thermal limits of the system and the I²t

These tests shall be performed at nominal current. For these tests, a suitable diagnostics set (including direct or indirect measurement of thyristor junction temperature) shall be made available by the Industrial Supplier in order to properly verify the thermal behaviors and the temperatures variations undergone during:

the changes of mode, the soak tests, the test of rise in temperature (i.e. in dynamics) to estimate the thermal resistance, the thyristor temperature measurement (or the exchanger) with temperature variation at the

inlet of water cooling,

PFC and PSs shall sustain the reference waveforms defined in Figure 4.4.3-1. The Supplier can propose alternative test waveforms, provided that he demonstrates that this alternative is thermally equivalent to the reference waveforms.

FPPC PSs shall sustain the duty cycle as defined in table 4.4.2-1 and table 4.5.1-1,.

Before and after the soak test, a visual and performance check shall be carried out.

d) EMC Tests – Immunity

Compliance shall be tested of the whole control equipment supplied under the Contract with the applicable immunity requirements of IEC 61000-6-2 (level 3) or IEC 61800-3 second environment cat.4 The EMC compliance shall take in consideration:

the emission, the immunity, the DC fields perturbation and the effects, the EMC requirements in term of grounding, earthing, screening, …

Whole equipment include internal wiring shall be design and testing in compliance with the electromagnetic perturbation in site and considering the environment.



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e) Functional test

Functional tests (ref. Sections 4.3, 4.4 and 4.5) shall include, at least, checking of converter regulator, supervisory logic control and water cooling system used for operating the converter. The control function shall be previously demonstrated using a reduced scale mock-up or a complete computer simulator.

All the TS requirement of each device shall be verified in additional of the following point:

General behavior, Synchronism between the bridge, The type of main control loops (current and voltage loop, range, accuracy, delays…), The circulating current control, The crowbar switch control, The management of defaults and alarms (in case of internal fault or external events taking into

account the recovery sequence), The regulation limiting functions (voltage limit and current limit), The instrumentation and measurements, The high pressure test behavior of the water cooling system,: PS demineralized water cooling

circuit shall be tested at 850kPa for 6 hours without no leakages. If it is the case, the high pressure test behaviour for the compressed air distribution system

inside the PS : the air compressed system shall be tested at 2.4 MPa for 6 hours. Before the tests, the Industrial Supplier shall provide an exhaustive list of functional test which

shall be carried out and agreed by the costumer during the Detail Design Phase.

5.3.2.Crowbar Switch

Crowbar switches shall be in compliance with the technical specification and verify the following tests:

a) Test to verify the withstand voltage to ground

Withstand voltage to ground tests shall verify the voltage insulation capability of PS components complying with Table 4.2.22-1 and taking into account reference Document n°2.

b) Test to verify current capability and load functional tests

Crowbar current capability shall be checked with respect to expected peak current and I 2t value (ref. Section 4.2.22) . These performances shall be tested operating the crowbar unit both by an external command and by an automatic BOD intervention. In this way current capability tests also include functional load tests. For this purpose, a suitable diagnostics set shall be made available by the Industrial Supplier in order to properly verify the thermal behaviors and the temperatures variations undergone during all phases of testing and soak testing. In particular, direct or indirect measurement of the thyristor junction temperatures shall be provided.

The equipment shall be able to perform the operation foreseen in Sec. 4.2.22 every 1800 sec..

Before and after the soak test, a visual and performance check shall be carried out.

c) EMC Tests – Immunity

Compliance shall be tested of all control equipment supplied under the Contract with the applicable immunity requirements of IEC 61000-6-2 (level 3) or IEC61800-3 second environment cat.4 .

The EMC compliance shall take in consideration:

the emission, the immunity, the DC fields perturbation and the effects,



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the EMC requirements in term of grounding, earthing, screening, …

The equipment shall be in compliance with the electromagnetic perturbation in site and considering the environment.

d) Functional test

Functional tests (ref. Section 4.2.22) consist in the checking of the command control of the mechanical and electronics switches.

All the TS requirement of each device shall be verified in additional of the following point:

General behavior, Stress with several operation (not less than 2000 without any maintenance) The crowbar switch control, Closing and opening time of the different type switch if any, The management of defaults and alarms (in case of internal fault or external events taking into

account the recovery sequence), The instrumentation and measurements, The high pressure test behavior of the water cooling distribution system inside the PS: the

demineralized water cooling circuit shall be tested at 850kPa for 6 hours without no leakages. If it is the case, the high pressure test behaviour for the compressed air distribution system

inside the PS : the air compressed system shall be tested at 2.4 MPa for 6 hours.

e) Seismic Tests

Crowbar units are assumed to be safety relevant and therefore, to be seismic resistant designed (ref. Section 4.2.22) . For these it shall be demonstrated (for example using “hammer test”) that the natural frequency of the apparatus are far away from the expected seism frequency (ref. Annex 1, PID Section 1.8.3)

5.3.3.Reactor cubicle

a)Test to verify the withstand voltage to ground

For this test the reactor shall be connected to the thyristor PS (ref 5.3.1).

b)Test to verify the reactor Current and I²t capability

For this test the reactor shall be connected to the thyristor PS (ref 5.3.1).

c) Functional tests

For each reactor the following tests shall be performed:

General inspection

Inductance value: this test shall be performed along all the current operating range of the reactor. Inductance value shall be measured at frequency to be agreed with the Costumer during the DDP and measured values shall be within the 60076-6 IEC Standards tolerance for smoothing reactors. In particular, in case of reactor with central connection point, the difference of inductance values between them shall be inside [0;+20%].



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Instrumentation and monitoring apparatus Inspection (if any)

Water Cooling circuit test (in case of water cooled components): the reactor demineralized water cooling circuit shall be tested at 850kPa for 6 hours without no leakages.

5.3.4.Visual Inspection

All equipments shall be made in checking the following point: Validation of layout and dimensioning, The maintainability aspect, Checking of grounding connection,

5.3.5.Current / Voltage transducers

Certificates and tests shall demonstrate compliance of the transducer with the required performance specifications.It is generally assumed that transducers are certified by the manufacturer. If not, one transducers of each type shall be subjected by the Industrial Supplier to tests under the rated continuous current / voltage conditions and the following tests:

one transducer of each type shall be subjected by the Industrial Supplier to a temperature rise test at the rated continuous current of the circuit to which it shall be connected in service;

one transducer of each type shall be subjected to a response test which shall demonstrate that the response time of the device is in line with the specified requirements whilst maintaining the required accuracy. Details of such a test shall be agreed during the relevant DDP of the Contract;

EMC tests shall be necessary; test in top and bottom of the scale shall be necessary if we operate with the limits.

5.3.6.Control and regulation cubicle

All equipment shall be fully tested to check they fully comply with the functional requirements of this specification and performs the operations for which it was designed.

The Functional test shall be performed on the Local Control Cubicle (LCC) and shall consist of a comprehensive series of measurements of the characteristics of the equipment to check that its performance is in accordance with the requirements of this specification and performs the operations for which it was designed.The safe and correct operation of all protective circuits and the overall protection coordination shall be checked.

Unless otherwise agreed, these tests shall be performed in conditions as much as possible near to those ones reported in Section 11. Final procedure shall be agreed with the Costumer during the DDP also depending on the certification made available by the Industrial Supplier regarding the different components included in the LCC.

Normal operation of the equipment shall occur as a result; the outputs of digital equipment shall be monitored throughout the test to ensure that no spurious operation occurs.

5.3.7.Electrical and fiber optic cables

Electric and optical fibre cables shall be tested in accordance with the applicable IEC standards, in particular IEC 60502 and IEC 60332. Depending on Costumer agreement, these tests can be substitute by suitable documentation provided by the Industrial Supplier.



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5.3.8.Transformers

a) General test

All tests for the transformers, object of this Technical Specification, shall be made in accordance with IEC 60076-1,2,3 for oil-immersed transformers, and IEC 60076-11 for dry-type transformers, unless otherwise specified in IEC 61378.Transformers shall be subjected to routine (acceptance) tests as specified below.

Measurement of winding resistance . Measurement of voltage ratio and check of phase displacement . Measurement of short-circuit impedance and load loss . Measurement of no-load loss and current. Separate source AC withstand voltage - Dielectric routine tests. (76-3, 11) Induced AC withstand voltage - Dielectric routine tests. (76-3, 12.2.1) Partial discharge measurement ( only for dry type transformer)

In addition transformers shall be subjected to type/special tests as specified below.

Temperature-rise test. Lightning impulse test -( only for Oil insulated/outdoor installed transformers) Dielectric type tests. (IEC 76-3, 13) Measurement of the harmonics of the no-load current

b) Electromagnetic Compatibility

Power transformers shall be considered as passive elements in respect to emission of and immunity to electromagnetic disturbances.

5.4. Site Acceptance TestsSite acceptance tests shall include :

a) Visual Inspection Tests;

b) Insulating oil dielectric test (in case of oil insulated transformer);

c) Withstand Voltage to Ground: in agreement to Reference Document 2;

d) Load Tests : load test should be performed using the dummy load made available by JAEA.

Detail shall be agreed during the DDP. It could agreed by JAEA and F4E to substitute this test

by a short circuit test.

In case of a short circuit test on the JAEA dummy load, JAEA will:

o Handle the dummy load.

o Provide the needed cables between the converters and the dummy load.

o Install the connections.

In case of a short circuit tests, the short circuit connections will be provided and made by the Supplier. JAEA shall

take care of connections between PS and Dummy load. Details shall be agreed during the DDP. It could be

agreed by JAEA and F4E to substitute this test by a short circuit test. In this case short circuit arrangement shall

be performed by the industrial supplier.



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e) Functional Tests: tests reported in Section 5.3 shall be repeated otherwise differently agreed during the DDP

6. CODES AND STANDARDS

The Design, Manufacture and Testing of all equipment supplied shall be in accordance with the most updated version of the relevant IEC Standards and Regulations.

7. PACKAGING AND TRANSPORTATION REQUIREMENTS

The Industrial Supplier shall be responsible for the transport, including packaging, handling and storage during the transport, of its contributions to the Port of Entry (PoE) in Japan (Annex 5). JAEA shall be responsible for transport, including handling and storage during the transport from the Po E to the Naka site.The Industrial Supplier shall issue, at least 10 months before transportation to Japan, the Specifications for Handling and Transportation of all the procured components. These Specifications shall include, at the least:

Dimension and weight of each transported package Detailed instruction for properly handling and transport each package.

In any case, the Industrial Supplier shall maintain, in respect to the Costumer, the full responsibility of the procurement. For this scope, the Industrial Supplier shall include in each package any stress sensor/shock recorders and any provision to make possible an effective and easy monitoring that the package itself, and anything included, is substantially sound.

7.1. Packaging

The sub-components forming the overall supply of the PFC and FPPC PSs and their parts shall be packed respecting the limits indicated in Table 2.11-1 of PID (Annex 1). It is assumed that standard limits will be complied with. If any deviation is foreseen, this shall be agreed with the costumer and JAEA at least 18months before transport to Japan.The packaging must provide adequate mechanical and environmental resistance to road transport and transoceanic ship transport together with components protection from dust and sea environment. The packaging must provide adequate attachments for loading and unloading by crane or equivalent lifting/moving tools and for its stable fixation on trucks and ships. Packaging material shall be in agreement with JA rules and with international sanitary rules (i.e. if wooden is used, phyto-sanitary certificate is required…). Packaging shall be made and managed in order to avoid and prevent contact of the components with any contaminant agent.As reported in Annex 5, the selection of the PoE by the Industrial Supplier depends on the overall dimensions of the transported packages.The packaging must ensure clear identification of the components transported.

7.2. Inspection of the packaging prior the shipment

The packaging of the components, ready for shipment shall be inspected at the manufacturer premises to verify the respect of the requirements for transport.The Inspection shall consist in a visual verification of the packaging and of a review of the formal and technical documentation for transport.The inspection and documentation verification shall be performed at the presence of representatives of the Industrial Supplier and of both Implementing Agencies (IAs). Documents for Custom clearance at Japan Port of Entry will be provided by JAEA.An official note of the inspection shall be prepared and approved by the representatives.



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7.3. Handling and storage

Handling has to be performed according to procedure insuring minimizing the risk of damage to the components. Storage has to prevent any possibility of damage and-or contact with any contaminant agent.

7.4. Delivery state

Components forming the EU contribution to JT -60SA PS system shall be delivered in numbered and identified packages.

7.5. Transports

Road+ship transports have to be performed using the most appropriate carriers in order to guarantee components safety and delivery on time.The Industrial Supplier shall provide all documentation requested by Local Authorities to delivery the components in JA.

7.6. Appearance check of the packaging at the port of entry

At the arrival of the ship in the port of entry, the packaging containing the components shall be checked after unloading from the ship (INCOTERMS 2000 CODE DEQ).The check shall consist in:

1. Visual verification of the packaging2. checking of shock recorder and/or acceleration sensor prepared to monitor shock and vibration during

transports3. Checking of all requested administrative documentation.

The check, the monitoring record and documentation verification shall be performed in the presence of representatives of the Industrial Supplier and of both Implementing Agencies.An official note of the check shall be prepared and signed by the representatives.

7.7. Inspection of the components at arrival in Naka siteAt the arrival of the final transport at STP site in Naka, visual verification, including shock recorder/acceleration sensors shall be repeated. An official note of the check shall be prepared and signed by representatives of the Industrial Supplier and of both IAs. After this approval, the Industrial Supplier shall receive back all delivered components for temporary storage, installation and testing on Site.The Industrial Supplier agrees that, following the above indicated procedure, the components are delivered to Nike Site in the same conditions they left the Industrial Supplier’s Factory.

8. IDENTIFICATION TRACEABILITY REQUIREMENT

8.1. Identification



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The Industrial Supplier shall identify all the components by a plate (metallic or plastic) attached to the component, where the identification code (ID) is written. This ID shall correspond to the name of the component that will be indicated by the Customer during the DDP; the same name shall be used in the technical documentation.Numbering and labelling system shall be defined during DDP.

8.2. Traceability

During the DDP, the Industrial Supplier shall propose a list of the components where traceability is necessary. The list will be discussed and approved by Customer. The list shall include all the components/sub-systems the failure of which could imply an out of service of the FPPC and PF PSs.The ID plate attached to the component of this list shall also contain the serial number.The serial number shall allow identifying the record containing information about the traceability of the component.For the more standard components, not included in this list, the Industrial Supplier shall indicate however the necessary information for their easy procurement.Records of the traceability of each component shall be stored and kept by the Industrial Supplier for at least 10 years (or the regulatory period of time, whichever is longer). The records shall contain all the information that allow going back to the production process, material utilized, manufacturer, etc.

9. DOCUMENTATION TO BE SUPPLIED

The final documentation shall include all the documentation described below, corresponding to the as built configuration of the component and including all the revisions performed during the installation and tests.The documentation shall be provided in standard formats (Word, Excel, PDF, AUTOCAD) and shall be delivered both in electronic and hard-copy version (three hard-copies and five CDs/DVDs are requested ).

9.1. Quality Plan

The Quality Plan may be a single document that covers the whole scope of the Contract, including work performed by Subcontractors or it may be an assembly of separate and well-identified documents. The contents of the Quality Plan shall be in line with Reference 1.

9.2. Progress reports

Progress reports shall be prepared and sent monthly to the Customer, reporting in particular on: main scheduled work packages and milestones main results, achievements and issues encountered in the last month main scheduled work packages and milestones for the coming month issues and actions from the last month or previous months

In order to avoid inconsistencies between Costumer wishes and equipment manufacture, validation of main manufacturing steps will be necessary. The progress reports have to point out:

The main manufacturing steps of the coming month to validate The main validated manufacturing steps of the previous month

9.3. Technical documentation

The following documents shall be provided as a minimum during execution of the procurement.



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9.3.1. First Design Report

This report shall be issued on the basis of a proposal by the Industrial Supplier discussed and agreed during the DDP.The First Design Report may be a single document covering the whole scope of the Contract or an assembly of separate and well-identified documents covering all technical aspects related to this procurement. This report shall demonstrate the full compliance with the technical specification.

The contents of the First design Report shall include at least:

Detailed design description of the power section and the selection of rating and type of the major components, including voltage and current transducers, passive components and cables, their main data / data sheets (for standard components) and relevant tolerances.

Seismic analysis for crowbar units and related auxiliaries.

Layout drawings shall be provided showing the location of the various cubicles of each PFC/FPPC PS unit. The layout shall comprise dimensions, weights and a description of the enclosures. Layout drawings showing the position of the components inside each cubicle including the voltage and current transducers

Detailed design description of the Control and Protection system, with block diagrams showing the main functional blocks and the flow of the various signals, data of the main components used in the control, list of signals exchanged with the JT-60SA SCSDAS.

Analysis of the PFC/FPPC PS unit operation in normal conditions taking into account the effects of the remaining part of the system; it shall show all the calculations and studies on the integration of the various components. In particular, the following points will be reported with any useful calculations/drawing/diagram:

o solid state converter components junction temperature, for each type of converter, during any operational phases (forward/circulating/backward current),

o firing angle limits,o circulating current / interphase reactance, o overall converter performances during any operational phase (forward/circulating/backward

current)o solid state / mechanical components of Crowbar unit,o any other analysis/calculation/diagram/technical information provided by the components

manufacturer, needed to properly demonstrate the proposed solution fully complies with the present Technical Specification.

In case of parallel connection of devices, a full report shall be given on the studies and tests performed to ensure correct current sharing in all operating conditions.

Analysis of any type of PFC/FPPC PS unit operation in anomalous condition; the Industrial Supplier shall provide a table of fault conditions, which lists the fault, detection, related protection, (main and back-up), the related alarms and monitoring. An analysis of the stresses on the components of any type of PFC/FPPC PS unit shall be given for every severe fault, and shall include all the related calculations and simulations. The effectiveness of the protective actions shall be demonstrated. Faults involving the danger of fire or explosion shall be clearly identified and described. The explosion of any semiconductor device shall be identified and measures to prevent damage arising from semiconductor explosion shall be provided.

Plan of all factory tests (ref. section 5.3) and Site acceptance tests (ref. section 5.4). For each test reference standard and acceptance criteria shall be defined. For factory tests, description of the available



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test facility shall also be included. The Industrial Supplier shall indicate which tests cannot be performed at his premises and shall propose alternative arrangements for their execution.

Preliminary information regarding the site installation requirements

Preliminary information regarding the maintenance requirements and procedures

List of reference standards used for the design of the system shall be given

9.3.2. Factory Test Plan and Procedures

At least two months before testing, the Industrial Supplier shall complete and update(if needed) the list of Factory Tests included in the First Design Report.The Industrial Supplier shall provide a detail description of the test procedures to be performed, the acceptance criteria and the time schedule for each test. The overall test schedule shall include, if any, tests that are performed outside the Industrial Supplier premises.

9.3.3. Site Installation Plan

A sequence of assembly, installation and commissioning activities with related detailed time schedule shall be provided by the Industrial Supplier.The final version shall be produced at least six months before the starting of works, and shall be approved in writing by the Customer prior to shipping of the equipment.

9.3.4. Site Commissioning Program

The Industrial Supplier shall provide a Site Commissioning Programme detailing the test procedures to be performed, the acceptance criteria and the time schedule. The Site Commissioning Programme shall be provided at least two months before the start of tests on site, and shall be approved by the Customer prior to start of the tests.

9.3.5.Tests reports

The Industrial Supplier shall provide written records of all Factory, Site and Acceptance tests performed. The Test Reports shall be provided not later than one month after the relevant tests have been performed. The Test Reports shall report clearly the results of the tests, which shall be compared with the requirements given in the Technical Specifications.

9.3.6.Operation and Maintenance Manual

The Industrial Supplier shall provide an Operation and Maintenance Manual including, but not limited to:

Operation procedures

Maintenance instructions, including calibration and adjustment procedures



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Check in case of fault indication

The final version of the Manual shall be provided no later than one month after completion of the Site tests.

9.3.7.Specifications for non standard component

For not standard components, above the traceability information described in section 8.2, the technical specification prepared for their procurement shall be provided.

9.3.8.Block and functional Scheme of the control system

Comprehensive information shall be provided for each electronic card part of the supply, sufficient to understand the card operation and to perform the necessary measurement. Expected levels and/or waveforms at the various test points shall be included.A first draft of this document shall be produced and provided at least one month prior to delivery of equipment on Site.

9.3.9. Final Design Report

The Industrial Supplier shall issue a Final Design Report after the site acceptance test. The Industrial Supplier shall review all documents, information and drawings provided during the procurement. The final Design Report will be an updating of the first Design Report.

9.3.10. Drawings

One set of reproducible drawings of the equipment “as built” shall be supplied not later than 6 weeks after acceptance of the system. A complete cable and connection schedule shall be included. These drawings shall include all the modifications and amendments resulting from installation and commissioning on site.

9.3.11. Source codes

The source code of any software used for PLC, microprocessor, PLD or other programmable device shall be provided, no later than 6 weeks after acceptance of the system, together with sufficient documentation and software tools to modify the operation of the programmable devices.

10. TRAINING

The Industrial Supplier shall provide training for the operating staff, in the operation, maintenance and troubleshooting of the supply.

Training shall be in four forms: preparation of an “Operation and Maintenance Manual” in such a way that technical staff on-site may get a

good understanding of the equipment, its mode of operation and of the procedures to carry out setting and checks of protections, controls loops, maintenance interventions, etc;

informal instruction during the execution of the Contract, especially during testing at the Industrial Supplier’s Facilities and Site testing and commissioning. When Representatives of the Customer/F4E/JAEA are present they will be allowed to ask a reasonable number of questions and/or seek clarifications without unduly delaying the activities of the Industrial Supplier;



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a formal presentation ( in English) to the Site’s technical staff lasting up to 10 days. The Industrial Supplier shall give the presentation, unless differently agreed with the Customer;

instructions in the use of programmers and source code for any programmable devices.

11. SITE CONDITIONS

11.1. Ambient conditions

The equipments shall be installed in Naka, Ibaraki, Japan, at the JAEA Site, in the buildings described in Section 3.5 taking into account reference scheme DWG 1 to DWG 1613. The magnetic field in these areas, related to the JT-60SA operation, will be less than 5 mT.The ambient site conditions of the Naka site are summarized in Table 11.1-4 (ref. to PID section 2.7)

Table 11.1-4 – Site ambient conditions at the Naka site

During all phases of the installation and the commissioning the Industrial Supplier shall be responsible of the proper management of the component depending on the ambient condition reported in table 11.1-1.

11.2. Seismic event

Some information about seismic events are given in section 1.8.3 of the PID. Seismic resistant design (ref. IEC68-3-3) is required for equipments with safety function in JT-60SA. Among PS units, only Quench Protection Units(QPC), Crowbar (CB) units, DC Feeders and related equipments, are considered to have safety functions. For them the following In “Floor Accelerations” have to be taken into account for class B:



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Floor AccelerationHorizontal = 4.5m/s2 (=0.45G) Floor AccelerationVertical = 2.25m/s2 (=0.225G)

It is calculated as the product of the following three parameters: “Ground acceleration (ag)” “Superelevation factor (K)” “Direction factor (D)”, which in Naka Site are:

Ground acceleration = 3 m/s2 Superelevation factor K = 1.5 Direction factor D x,y = 1.0, Direction factor Dz : 0.5

As for specific requirements for the apparatus, there is the following classification: A class: Facilities involving radioactive substances.

B class: Facilities connected to class A, or prevention apparatus for diffusion of radioactive substances

C class: Facilities not classified to A nor B, and acceptable to conventional industrial safety level.

With the exemption of crowbar units and DC feeders (see par.4.2.22), that are classified class B, all PS shall be manufactured based on class C standard. This means that they shall not be designed following particular guideline for seismic resistant design for power supply equipments, but, in any case, the mechanical switches, disconnectors, connections and so on should be able to maintain their position and to carry on their work.

11.3. The low voltage distribution system

The main data of the auxiliary power systems provided by JAEA at the connection point with the Power Supply equipments are summarized in Table 11.3-5.

Table 11.3-5 – Parameter of the JT-60SA low voltage distribution system at the connection point with the PS

400 V ac 400 V ac UPS 100V dc UPS

Nominal voltage 200/400 V 3-ph, 4-w 200/400 V 3-ph, 4-w 100 V

Limits of the voltage variations ±10% ±5% ±5%

Nominal frequency 50 Hz, ±0.1% 50 Hz, ±0.1%

Total harmonic distortion < 5 %

11.4. The earthing / grounding network

----- OMISSIS -----

11.5. Facilities in the PS buildings

11.5.1. Site water cooling systems

The JAEA cooling system shall provide two circuits, one for demineralised water dedicated to Aluminium components and a second one for the raw water.In Table 11.5.1-1 are reported the main characteristic of the JT-60SA water cooling systems.



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Table 11.5.1-1 – Parameters of the JT-60SA water cooling systems

Aluminum circuit Raw Water cooling System

Inlet temperature ≤ 35 °C ≤ 31 °C

Supply pressure range 450 ±100 kPa In the range: 0,25-0,7 MPa

Electrical resistivity ≥ 1 MΩ cm @ 45°C ≥ 0.5 kΩ * cm

11.5.2. Air conditioning system

JAEA will provide air ventilation for the PS rooms; the parameters of the air ventilation system are summarized in Table 11.5.2-1 for each room where the PSs shall be installed.Without considering the PS operation, the air ventilation system is designed to guarantee the maximum indoor temperature and indoor humidity indicated in Table 11.5.2-1. These values have to be intended as averaged in all the room volume.

Table 11.5.2 -1 – Parameters of the JT-60SA air ventilation system

Rooms/Areas Room volume VentilationMin indoor

temperature*

Max indoor

temperature*

Max indoor

humidity*

Active beam line PS room

/ Extension area3100 m3 11590 m3/h(**) +5 °C 40 °C 87% RH

Rectifier room 22608 m3 414000 m3/h +5 °C 40 °C 87% RH

Resistor room 3240 m3 19630 m3/h +5°C 40°C 87% RH

VCB room 10689 m3 69140 m3/h -+5 °C 40 °C 87% RH

(*) Maximum monthly average relative humidity (refers to the entire room volume) that will be assumed as a reference for the design of the components. Operation shall be performed except in the case of dew condensation (detailed modality TBD during DDP).

(**) In active beam line PS room, an air conditioner with cooling capacity of 74.1 kW (63850 kcal/h) is available.

The ventilation is provided by ducts and openings, the layout of which is shown in drawings DWG11DWG.8, DWG12 DWG.9 for Rectifier buildings 1st and 2sd floors and DWG13 for Active Beam Line PS room.

11.5.3. Compressed air system

On JT-60SA buildings, JAEA will distribute compressed air without major impurities, dry and lubricated. The compressed air distribution system has the characteristics shown in Table 11.5.3-1.

Fabio Starace, 27/11/11,

3



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Table 11.5.3-1 – Parameters of the JT-60SA compressed air distribution system

Pressure 1.5 MPa ± TBD MPa

Available flow rate @min pressure TBD m3/s

The Industrial Supplier has to adapt the compressed air system to its need.

12. QUALITY ASSURANCE DOCUMENTS

The Quality Assurance provisions are regulated by the reference 1.The Industrial Supplier shall provide within the Tender documentation information, and preferably evidence, on the reliability of equipment offered and of the compliance of the actions appropriate to the required quality level. The Industrial Supplier shall indicate the times necessary for the substitution of the main components in case of faults.The Industrial Supplier shall provide a realistic assessment of the necessary maintenance requirements over the first 10-year period of operation.