18rf 31170-ts-003 (screws)

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© © Technical Specification SCREWS FOR THE FUEL CHANNEL / FEEDER PIPE CONNECTION Embalse Life Extension Project 18RF-31170-TS-003 Revision 0 2011/07/15 2011/07/15 PROTECTED - SENSITIVE PROTÉGÉ - DÉLICAT Magda, Brian - REACTOR DESIGN ENG Prepared by Rédigé par Crandell, Arthur - Snr Sh, Fuel Channel Design Reviewed by Vérifié par Bleoca, Victor - Manager Reactor Structures & Reactivity Mechanisms Approved by Approuvé par

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© ©

Technical Specification

SCREWS FOR THE FUELCHANNEL / FEEDER PIPECONNECTION

Embalse Life Extension Project

18RF-31170-TS-003

Revision 0

2011/07/15 2011/07/15PROTECTED -SENSITIVE

PROTÉGÉ -DÉLICAT

Magda, Brian - REACTORDESIGN ENG

Prepared byRédigé par

Crandell, Arthur - Snr Sh, FuelChannel Design

Reviewed byVérifié par

Bleoca, Victor - Manager ReactorStructures & ReactivityMechanisms

Approved byApprouvé par

18RF-31170-TS-003 2011/07/15

Technical Specification

Screws for the Fuel

Channel/Feeder Pipe

Connections

Embalse Life Extension Project

18RF-31170-TS-003

Revision 0

2011 July

PROTECTED -

SENSITIVE

This document and the information contained in it is the property of Atomic Energy

of Canada Limited (AECL) and must be safeguarded in accordance with AECL

requirements and in a manner generally consistent with the Treasury Board requirements.

These requirements include but may not be limited to keeping the document secure

when not in use, accessibility of the information to pre-screened personnel, and

special handling, storage and destruction measures. No use, disclosure, exploitation or

transfer of any information contained herein is permitted except in accordance with

AECL requirements or AECL’s prior written consent.

juillet 2011

PROTÉGÉ -

DÉLICAT

Le présent document et l’information qu’il contient sont la propriété d’Énergie

atomique du Canada limitée (EACL) et doivent être protégés conformément aux

exigences d’EACL et, de façon générale, à celles du Conseil du Trésor. Ces exigences

comprennent, entre autres, la garantie de sécurité du document lorsqu’il n’est pas

utilisé, la restriction de l’accès aux renseignements aux personnes qui ont obtenu la

cote de sécurité appropriée et les mesures de manipulation, d’entreposage et de

destruction spéciales. Les renseignements qu’il contient ne peuvent être utilisés, ni

divulgués, ni exploités ni communiqués sauf conformément aux exigences

d’EACL ou à l’autorisation préalable écrite d’EACL.

Atomic Energy of

Canada Limited © Énergie atomique du

Canada limitée

Revision History Liste de révisions PROTECTED - SENSITIVE

PROTÉGÉ - DÉLICAT Page 1 of /de 1

CW-511300-FM-168 Rev. 0 Ref. Procedure CW-511300-PRO-161

Document No. / Numéro de document: 18RF 31170 TS 003

Doc. Collection ID ID de la collection de doc.

SI Répertoire du sujet

Section Serial No. N

o de série

Document Details / Détails sur le document

Title

Titre

Total no. of pages

Nbre total de pages

Screws for the Fuel Channel/Feeder Pipe Connections 21

For Release Information, refer to the Document Transmittal Sheet accompanying this document. / Pour des renseignements portant sur la diffusion, consultez la feuille de transmission de documents ci-jointe.

Revision History / Liste de révisions

Revision / Révision

Details of Rev. / Détails de la rév. Prepared by Rédigé par

Reviewed by Examiné par

Approved by Approuvé par

No./No

Date (yyyy/mm/dd)

dsfpdffm 18RF-31170-TS-003 2011/07/15

D1 2011/05/11 Issued for “Review and Comment”. B. Magda A. Crandell

S. Afzalimehr D. Zdravecky

T. De

V. Tume

0 2011/07/15 Issued as "Approved for Use". B. Magda A. Crandell V. Bleoca

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18RF-31170-TS-003 Page i

Rev. 0

TABLE OF CONTENTS

SECTION PAGE

18RF-31170-TS-003 2011/07/15

1. SCOPE ............................................................................................................ 1-1

2. ABBREVIATIONS ......................................................................................... 2-1

3. DEFINITION OF TERMS ............................................................................... 3-1

4. APPLICABLE CODES, STANDARDS AND DRAWINGS............................ 4-1

4.1 Drawings ......................................................................................................... 4-1 4.2 Codes and Standards ........................................................................................ 4-1

4.3 ASME Boiler and Pressure Vessel Code Requirements .................................... 4-2 4.4 Registration and Jurisdictional Requirements ................................................... 4-3

5. MATERIAL..................................................................................................... 5-1

6. REQUIREMENTS ........................................................................................... 6-1

6.1 General ............................................................................................................ 6-1 6.2 Manufacture ..................................................................................................... 6-1

6.3 Suppliers Manufacturing Procedures ................................................................ 6-1 6.4 Dimensional Requirements .............................................................................. 6-1 6.5 Preproduction Samples ..................................................................................... 6-1

6.6 Cleaning........................................................................................................... 6-2 6.6.1 Cleaning Materials Halogen/Sulphur Limits ............................................... 6-2

6.6.2 Impurity Content of Other Materials ........................................................... 6-2 6.7 Identification .................................................................................................... 6-2

7. QUALITY ASSURANCE REQUIREMENTS ................................................. 7-1

7.1 AECL Supplementary Clauses ......................................................................... 7-1

7.1.1 C3 Inspection and Test Plan (Quality Plan) ................................................ 7-1 7.1.2 C4 Inspection and Test Procedures ............................................................. 7-2

8. INSPECTION, TESTS AND REPORTS.......................................................... 8-1

8.1 General ............................................................................................................ 8-1

8.2 Nondestructive Examination Personnel ............................................................ 8-1 8.3 Material Tests .................................................................................................. 8-1

8.4 Dimensional Inspection .................................................................................... 8-2 8.5 Nondestructive Examination ............................................................................ 8-2

8.5.1 Visual Examination .................................................................................... 8-2 8.5.2 Liquid Penetrant Examination .................................................................... 8-2

8.5.3 Ultrasonic Examination .............................................................................. 8-2 8.6 Reports ............................................................................................................ 8-3

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18RF-31170-TS-003 Page ii

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TABLE OF CONTENTS

SECTION PAGE

18RF-31170-TS-003 2011/07/15

9. QUALITY CONTROL RECORDS ................................................................. 9-1

9.1 Contents of File ................................................................................................ 9-1 9.2 Maintenance and Access to Records ................................................................. 9-1

9.3 History Docket ................................................................................................. 9-1

10. PACKAGING AND PREPARATION FOR SHIPMENT ...............................10-1

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1. SCOPE

This Technical Specification establishes the technical requirements for the manufacture,

inspection, testing, packaging and shipment of screws for the fuel channel/feeder pipe

connections for the Embalse Retubing Project.

Note: Where dual values/dimensions (Imperial and Metric) are given in the text, the base

design unit is indicated by an underline.

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2. ABBREVIATIONS

AP Authorized Representative.

AECL Atomic Energy of Canada Limited

ASME American Society of Mechanical Engineers

ASTM American Society for Testing and Materials

FBH Flat Bottomed Hole

ITP Inspection and Testing Plan

NASA Nucleoelectrica Argentina Sociedad Anonima

NDE Non-destructive Examination

QA Quality Assurance

TS Technical Specification

TRP Technical Requirement Package

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3. DEFINITION OF TERMS

In this document, unless the context specifies otherwise, the following meaning shall apply:

“The Purchaser” means the Nucleoelectrica Argentina Sociedad Anonima

“The Supplier” means the company rewarded with the contract

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4. APPLICABLE CODES, STANDARDS AND DRAWINGS

All documents listed below shall apply as specified herein. In the event of any conflict between

the requirements of this Specification and those of the documents listed below, or between the

Technical Requirements Package (TRP) and this document, the Purchaser shall be notified and

the governing requirements shall be at the discretion of the Purchaser.

4.1 Drawings

The drawings applicable to the screws are listed in the Technical Requirements Package (TRP).

The Supplier shall prepare all necessary shop drawings, which shall be accepted by the Purchaser

prior to their issuance for manufacture.

4.2 Codes and Standards

The Supplier shall conform to, and have available for reference, copies of the applicable codes

and standards as listed in this document. The Supplier shall obtain the Purchaser’s prior

acceptance for the use of standards other than those listed in this document.

Code or Standard Edition Title

CSA CANADIAN STANDARDS ASSOCIATION

CSA-N285.0-06

including UPD 1

2006 General Requirements for Pressure Retaining Systems and

Components in CANDU Nuclear Power Plants.

SAE SOCIETY OF AUTOMOTIVE ENGINEERS

AS 7466B 2005 Bolts and Screws, Nickel Alloy, UNS N07718 Tensile

Strength 185 ksi Fatigue Rated Procurement Specification

AS 7467A 1997

(R2006)

Bolts and Screws, Nickel Alloy, UNS N07718 Tensile

Strength 185 ksi Stress Rupture Rated Procurement

Specification

ANSI/ASME AMERICAN NATIONAL STANDARDS

INSTITUTE/AMERICAN SOCIETY OF

MECHANICAL ENGINEERS

B1.1 1989

(R2001)

Unified Inch Screw Threads

ASME BPVC AMERICAN SOCIETY OF MECHANICAL

ENGINEERS BOILER AND PRESSURE VESSEL

CODE

Section II, Part B 2004 ASME Boiler and Pressure Vessel Code, Non-Ferrous

Material Specifications

Section III,

Subsection NCA

2004 ASME Boiler and Pressure Vessel Code, General

Requirements

Section III,

Subsection NB

2004 ASME Boiler and Pressure Vessel Code, Rules for

Construction of Nuclear Power Plant Components, Class 1

Components

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Code or Standard Edition Title

Section V 2004 ASME Boiler and Pressure Vessel Code, Nondestructive

Examination

ASME MATERIAL SPECIFICATIONS

SB-637 2004 Specification for Precipitation-Hardening Nickel Alloy

Bars, Forgings, and Forging Stock for High Temperature

Service

CGSB CANADIAN GENERAL STANDARDS BOARD

CAN/CGSB-48.9712 2000 Non- destructive Testing - Qualification and Certification

of Personnel

ASNT AMERICAN SOCIETY FOR NONDESTRUCTIVE

TESTING

SNT-TC-1A 1992 Personnel Qualification and Certification in Non-

destructive Testing

ISO INTERNATIONAL ORGANIZATION for

STANDARDIZATION

ISO 9001 2000

(R2005)

Quality Management Systems - Requirements

AECL Atomic Energy Canada Ltd.

00-00660-TS-001 Rev. 9 Permanent Manufacturing Records (History

Docket/History File)

4.3 ASME Boiler and Pressure Vessel Code Requirements

The screws specified in this document are considered as Class 1 material as defined by

Section III of the ASME Boiler and Pressure Vessel Code, the requirements of which must be

met as well as those of this Specification. The screws connect the flange of the feeder coupling

to the end fitting on each end of the fuel channel assembly. The feeder couplings form a

pressure-tight connection, between the end fittings and the feeder pipes, which form a part of the

Primary Heat Transport System.

The screws are to comply with the pertinent sections of the ASME Code as defined herein.

a) ASME Boiler and Pressure Vessel Code, Section II,

b) ASME Boiler and Pressure Vessel Code, Section III,

c) ASME Boiler and Pressure Vessel Code, Section V.

Areas of control will likely include, but not be limited to:

a) Material quality and control,

b) Nondestructive Examination (NDE),

c) Affidavits of manufacture.

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4.4 Registration and Jurisdictional Requirements

The screws for the end fitting/feeder pipe connections are identified as Class 1 material.

Therefore, registration with the jurisdictional authority and authorized inspection are not

required. The screws are part of the fuel channel assembly design for registration purposes with

the appropriate jurisdictional authority, if required. This registration, if required, is the

responsibility of the Purchaser.

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5. MATERIAL

Material shall be precipitation-hardening nickel alloy meeting the requirements of

ASME SB-637 UNS N07718 and Class 1 of Section III of the ASME Code.

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6. REQUIREMENTS

6.1 General

The Supplier shall be responsible for and shall supply all material, tools, fixtures and gauges.

No repairs of defects shall be permitted without prior acceptance of the Purchaser.

6.2 Manufacture

The heads of the screws shall be produced by hot forging. Controls shall be placed on the range

of temperature during forging. Threads shall be cold-formed by rolling.

The heat treatment to develop mechanical properties shall be in accordance with the material

specification above.

6.3 Suppliers Manufacturing Procedures

The methods and procedures for manufacture and testing are the responsibility of the Supplier

and shall be submitted to the Purchaser for acceptance.

Before start of manufacture, a Manufacturing Inspection and Test Plan (MITP) covering receipt

of material through to shipment of finished parts shall be submitted and accepted by the

Purchaser. The MITP shall cross-reference the detailed process and inspection procedures.

No subsequent change shall be made to any procedure without prior acceptance of the Purchaser.

6.4 Dimensional Requirements

The finished screws shall satisfy the dimensional and surface finish requirements of the drawings

specified in the tendering and contract documents.

The thread shall comply with the requirements of ANSI/ASME B1.1.

6.5 Preproduction Samples

A sample of twenty-five (25) screws and ten (10) oversize screws, produced according to the

accepted manufacturing plan and procedures, are to be submitted by the Supplier to the

Purchaser. This submission shall be after the award of contract but before start of production.

The Purchaser will evaluate the sample screws. This will include evaluation of dimensions,

surface and internal soundness, mechanical properties, and metallurgical structure. It will be

done by nondestructive examination such as liquid penetrant and ultrasonic examination,

mechanical testing, and metallography. Acceptance will be based on the requirements of this

Specification, the drawing, ASME Code Section II Material Specifications,

Section III Subsection NB, and SAE AS-7466 paragraphs 3.7.1 (Macroscopic Examination,

Headed Blank) and 3.7.2 (Microscopic Examination, Finished Parts), or SAE AS-7467

paragraphs 3.7.1 (Macroscopic Examination, Headed Blank) and 3.7.2 (Microscopic

Examination, Finished Parts). Production must not start before the Purchaser’s acceptance for

the sample batch of screws.

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The Purchaser will perform examination and testing on the initial sample of 35 screws (25

regular and 10 over size), at cost. If the screws fail this initial examination and testing,

examination and testing of an additional 35 screws (25 regular and 10 over size) will be at the

Suppliers cost.

6.6 Cleaning

Throughout manufacture, processing and handling of parts adequate precautions shall be taken to

ensure that cleanliness is maintained to completion of the work. All grease, oil, scale,

NDE compounds, moisture, dust and other foreign materials shall be completely removed from

all parts prior to packaging. Procedures for the cleaning process (incorporating acceptance

standards) shall be submitted to the Purchaser for acceptance.

6.6.1 Cleaning Materials Halogen/Sulphur Limits

Halogenated cleaning materials are not permitted. Other organic cleaning solvents used for all

cleaning operations shall conform to the requirements for both halogens and sulphur content of

paragraph T-641 of Article 6 of Section V of the ASME Boiler and Pressure Vessel Code for

Liquid Penetrant Examination materials.

Aqueous cleaning materials, when analysed by techniques acceptable to the Purchaser, shall

contain less than 100g of halogens per gram of made-up solution, and the sulphur content shall

be less than 350 g, per gram of made-up solution.

Certification of the halogen and sulphur content in accordance with the above requirements shall

be provided and shall report each batch number of each material as well as the actual test results

obtained when applicable.

6.6.2 Impurity Content of Other Materials

All other materials, which come into contact with the work, e.g., masking tape, marking inks,

rust inhibitors, etc., shall be analysed for halogens and sulphur by techniques acceptable to the

Purchaser. The material shall contain less than 100 g of halogens per gram of made-up

solution, and the sulphur content, when measured as sulphate, shall be less than 350 g, per gram

of made-up solution.

6.7 Identification

All screws shall have a permanent identification, which allows them to be traced to their original

heat and lot number. This identification may take the form of a marking symbol or code, in

which case the symbol or code shall be explained in the Material Certificate.

The Supplier shall obtain the Purchaser’s acceptance for the method and location of marking

prior to the commencement of manufacture.

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7. QUALITY ASSURANCE REQUIREMENTS

All activities associated with the manufacture and supply of the screws, shall meet the following

requirements (a) and (b):

a) CAN/CSA-N285.0,

b) ASME Section III, NCA-3800.

All activities associated with the production and supply of items required by this Technical

Specification shall be subject to quality assurance. Supplier’s Quality Assurance program shall

meet the requirements of ISO 9001 and the AECL supplementary requirements of Section 7.1.

Any exclusions permitted under clause 1.2 of ISO 9001, shall be limited to those specifically

noted in the Tender Document. Any other exclusion shall be identified and justified by the

Supplier and accepted by the Purchaser. The Supplier shall also comply with the other quality

assurance requirements specified in the Tender Document.

For pressure-retaining items, the Supplier shall also comply with the applicable quality assurance

requirements of the CSA Standard N285.0 and ASME code.

The Supplier’s Quality Assurance Program shall be acceptable to both the Purchaser and the

Regulatory Authority.

7.1 AECL Supplementary Clauses

7.1.1 C3 Inspection and Test Plan (Quality Plan)

a) The Supplier shall prepare an Inspection and Test Plan, which describes the inspections, tests

and verifications for the product or service specified in the contract. Regardless of who

prepares the Plan, it shall be approved by the organizations primarily responsible for Quality

Assurance.

b) Unless otherwise specified in the contract:

1) Submit the Plan to the customer for acceptance following the award of the contract and before the applicable phase starts.

2) Update the Plan during the life of the contract to reflect revisions and resubmit for

acceptance.

c) Submit referenced inspection and test procedures with the Plan or on request when this is specified in the contract.

d) Specify in the Inspection and Test Plan:

1) What products or services are to be subcontracted and specify the Quality Assurance

program to be applied;

2) How the Supplier will verify the Sub-Supplier’s conformance to specified requirements by one or more of the following methods:

i) Inspection and tests by the Sub-Supplier as defined in the Sub-Supplier’s Inspection

and Test Plan;

ii) Inspection and tests by the Supplier at the Sub-Supplier’s facility;

iii) Surveillance by the Supplier;

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iv) Incoming inspection.

3) Where each inspection and test point is located in the production cycle;

4) What characteristics are to be inspected at each point and specify acceptance criteria and any sampling plan to be used;

5) Where the customer has established witness/hold or verification points.

7.1.2 C4 Inspection and Test Procedures

Specify or reference Inspection and Test Procedures in the Inspection and Test Plan for the

characteristics to be inspected. Review Sub-Supplier’s Inspection and Test Plans and Procedures

to assure that the specified requirements are met.

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8. INSPECTION, TESTS AND REPORTS

8.1 General

The Supplier shall be responsible for, shall provide for, and shall perform all the inspection and

testing specified herein. The inspection and testing shall be conducted in accordance with

procedures submitted to and accepted by the Purchaser.

The product shall be carefully examined during manufacture and after completion to determine

its conformance with this Technical Specification with respect to material, workmanship, finish

and dimensions and to assess its conformance with other requirements stated or reasonably

implied and not covered by specific tests.

The inspection shall also verify that the packaging is in accordance with the requirements of this

Technical Specification.

Surveillance by the Purchaser, Owner or Authorized Representative of the Purchaser shall not in

any way relieve the Supplier of inspection duties called for herein.

The Purchaser shall have the right to specify additional inspection or testing. The additional cost

of such work will be an extra to the contract.

8.2 Nondestructive Examination Personnel

All personnel performing nondestructive examination to meet the requirements of this

Specification shall be qualified as follows, subject to acceptance by the Purchaser.

In Canada

Personnel shall be qualified in accordance with CGSB 48.9712. Level 2 personnel shall interpret

results. Only Level 3 personnel shall interpret results and establish techniques.

In USA

Personnel shall be qualified to American Society for Nondestructive Testing (ASNT) Standard

SNT-TC-1A. Level II personnel shall interpret results. Only Level III personnel shall interpret

results and establish techniques.

In Other Countries

All personnel performing nondestructive examination to meet the requirements of this

Specification shall have documented evidence of qualification to certification standards of a

recognized regulatory body acceptable to the Purchaser and Regulatory Authority.

8.3 Material Tests

Testing shall be in accordance with the material specifications specified in Sections 5, 6.5 and

ASME Code Section III requirements. Proof in the form of a certified material test reports that

the required tests have been carried out at the source will be acceptable. If those are not

available, the Supplier shall perform the tests.

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8.4 Dimensional Inspection

Dimensional inspection shall demonstrate that the screws meet the requirements of the

drawing(s) referenced in the TRP.

8.5 Nondestructive Examination

Although the screws are less than one inch in size, they shall be inspected using the methodology

described in ASME Section III, Para. NB-2582, NB-2584 and NB-2585 after final machining.

(including threading). Acceptance criteria and exceptions are stated in 8.5.1, 8.5.2 and 8.5.3.

8.5.1 Visual Examination

All screws shall be examined as per Article 9 of Section V of the ASME Code.

Acceptance standard: NB-2582.

8.5.2 Liquid Penetrant Examination

All screws shall be examined using fluorescent liquid penetrant examination as per NB-2584

with the following exceptions and acceptance criteria.

The examination materials used shall conform to the following:

Halogenated liquid penetrant products or liquid penetrant products containing halogenated

materials are not permitted. Furthermore, all liquid penetrant examination consumables (such as

developers, cleaners, carriers, etc.) shall have both a restricted halogen and sulphur content

regardless of end use. The method of analysis, batch certification and the acceptance limits shall

be in accordance with the requirements of ASME Section V, Article 6, Paragraph T-641.

All traces of examination materials shall be removed from the screws on completion of

examination.

Acceptance Standard: All linear non-axial indications are unacceptable. All other indications

with a major dimension greater than 1.5 mm (1/16 inch) are unacceptable.

8.5.3 Ultrasonic Examination

On each lot of screws or on each batch of 500 screws, whichever is less, a 10% random sample

shall be taken for ultrasonic examination using the methodology described in NB-2585 and using

the following exceptions and acceptance criteria.

The examination shall be done by straight beam from the end of the screw.

The ultrasonic equipment shall be calibrated on a test bar of the same nominal composition as the

production part by setting up on a 3 mm (1/8 inch) diameter Flat Bottom Hole (FBH). A

distance amplitude correction curve shall be established as the reference level.

Acceptance Standards:

1. Any ultrasonic indication which shows a signal amplitude greater than 50% of the reference

level at the same depth below the surface is unacceptable and cause for rejection of the screw.

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2. If one or more screws in a sample are rejected then all screws in the particular lot or batch, from which the sample was taken, shall be ultrasonically examined.

8.6 Reports

Test and examination reports (two copies of each) signed by a responsible technical

representative of the Supplier and covering all tests and analysis shall be submitted to the

Purchaser during the course of the work. When examination or testing is subcontracted to an

outside agency, the reports shall be signed by a responsible technical representative of such

agency and countersigned by the Supplier.

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9. QUALITY CONTROL RECORDS

9.1 Contents of File

The Supplier shall maintain a complete file of records for all material and manufacturing,

inspection, examination and test data taken before, during and after manufacture, including the

procedures, specifications and drawings used; all fully identified by pertinent identifications

numbers. The records shall include all closely related data such as qualifications and acceptance

of procedures, NDE personnel and equipment, data on required items and records of deviations,

concession requests and acceptances.

The Supplier shall maintain an inspection, examination and test checklist.

9.2 Maintenance and Access to Records

Records specified in Section 9.1 shall be filed and maintained in a manner which will allow

access by the Purchaser or its Authorized Representative to specific information contained

therein at any time during manufacture. The Supplier shall take such steps as may be required to

provide suitable protection of all records from deterioration or damage.

9.3 History Docket

The Supplier shall prepare a History Docket as required by CSA-N285.0 and AECL

Specification 00-00660-TS-001, “Permanent Manufacturing Records (History Docket/History

File)”. In addition, each document of the History Docket shall be cross-referenced with the

serial number or numbers and the material code or codes of the relevant equipment. The History

Docket shall be reviewed and accepted by the Purchaser’s representative at the conclusion of the

work and prior to the shipment of the equipment.

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10. PACKAGING AND PREPARATION FOR SHIPMENT

The Supplier shall be responsible for packaging, crating, and preparation for shipment to the

destination specified in the contract documents.

Each screw shall be thoroughly cleaned as per Section 3.8 and enclosed in a protective sleeve to

prevent damage and ingress of foreign material either during shipment or subsequent storage.

The screws shall be supplied in cartons weighing no more than sixty (60) pounds. The screws

must be restrained from movement in all planes during storage and transit. Cartons shall be

suitably crated.

The crate supplied shall be suitable not only for transportation but also for dry unheated storage.

In addition, the contents of the crate shall be protected by a heavy gauge polythene film installed

free of water traps, to provide a drip-proof shelter, the bottom of which shall be left open for

draining purposes.

The top of the closed crate, and each of the cartons contained, shall be clearly marked and shall

be clearly identified with the material code.

Cleaning, packaging, crating and shipment procedure shall be submitted to the Purchaser for

acceptance prior to the commencement of manufacture.