ISIS Electrical Engineering - Meet the Buyer Event Steve Stoneham

A world centre for physical & life sciences research

Harwell Science & Innovation Campus

ISIS Pulsed Neutron and Muon Source

ISIS is the world’s leading pulsed neutron and muon research centre

Instruments

Accelerator

Targets

ISIS Machine Principal Components: 70 MeV single pass Linear Accelerator (LINAC)

800MeV multi pass Synchrotron Ring (10,000 orbits)

Beam Transport system to Target Station 1 (40 Hz)

Target Station 1 and its Neutron Instruments (22)

Beam Transport system to Target Station 2 (10 Hz)

Target Station 2 and its Neutron Instruments (7 + 4 + ?)

Support Plant (Water/Air etc)

TYPICAL ISIS SUB-STATION

400 Vac 3 Phase LOADS

11kV RING SWITCH

11kV

400V

2000 Amp

11kV

400V

2000 Amp

11kV RING SWITCH

L.V. Interconnector

EARTH MAT

15 OFF DUAL 1.25 MVA TRANSFORMER INDOOR SUB-STATION ARRANGEMENTS MAXIMUM INDIVIDUAL TRANSFORMER LOAD IS 50% OF THE TRANSFORMERS MAXIMUM IN AIR RATING. (IN EXTREMIS FORCED AIR VENTIALTION PERMITS AN ADDITIONAL CONTINUOUS 15% POWER TO BE TAKEN) CAST RESIN VACUUM IMPREGNATED TRANSFORMER CONSTRUCTION,HAS PROVEN HIGHER RELIABILITY AND THERE ARE NO OIL AND ASSOCIATED HAZARDS IN THE BUILDINGS TRANSFORMER L.V. SECONDARY WINDINGS ARE CONNECTED IN A “STAR FORMATION” TO GIVE CENTRE POINT EARTHING AND NEUTRAL CONNECTIONS. EACH DUAL SUB-STATION ARRANGEMENT HAS ITS OWN INDIVIDUAL EARTH MAT ARRANGEMENT. THIS ARRANGEMENT PROVIDES EXCELLENT EQUI-POTENTIAL BONDING FOR THE RELIABLE AND SWIFT OPERATION OF PROTECTION AND SAFETY DEVICES BUT PERFORMS POORLY WITH MANY E.M.C. AND ELECTRICAL NOISE TRANSMISSION ISSUES.

ISIS Power Requirements: LINAC 1.00 MVA Synchrotron 4.50 MVA Extracted Proton Beam 1 1.25 MVA Extracted Proton Beam 2 1.25 MVA Target Station 1 & Instruments 1.75 MVA Target Station 2 & Instruments 1.00 MVA Plant 1.25 MVA -------------- Total: 12.00 MVA 20% Controls, Diagnostics & Plant 40% Beam Acceleration (High Power RF) 40% Beam Steering (Magnets)

Synchrotron

Typical Beam Transport Magnet & Power Supply

Typical Power Supply Requirements: 100 ppm Stability High current (500A) sub 100Vdc External interlock Universal remote control interface Safety Technology usage (IGBT etc.) Cooling Method (water preferred) EMI/RFI compliant 19 inch Rack mounting (smaller sub 5 kW units) n + 1 redundancy topology (where appropriate)

Assorted Power Supplies (Range 1kW-700kW)

400V AC

MAGNET MOL

PSU WATER

CONTROLS

t°

WATER FLOW

CONTROLS NETWORK

230V AC

EXTRACT 3 (BPS) PPS (BPS) HMI

PS

U S

TATU

S

TEM

P I

NTL

K

FLOW

INTL

K

ALARM PSU INTERLOCK PLC MONITORED

MAGNET ON LIGHTS

ALL EPB2 PSU’s ON

Typical Magnet/PSU System

Typical PLC Interlock Rack

DC Magnet supply cables 75kM

(6000 individual terminations)

AC or Pulsed Magnet supply cables 10kM

400VAC Feeder Cables (>16mm²) 15kM

Copper bus-bar (Earth connection) 2kM

Copper bus-bar (>5kA) 2.5kM

Multi-core control cables >135kM

Co-axial signal cables 65kM

Fibre optic cabling <10kM

Accelerator Cable Inventory:

Target Station 1 (40 Hz) & Target Station 2 (10 Hz)

Similar principal of operation, after an abrupt energy transfer neutrons are liberated from a heavy metal target by the proton beam.(spallation) Each Target Station contains:

Specialist cryogenic systems (H2 and CH4)

Certified ATEX installation (explosive risk)

Critical target equipment maintained UPS power

All other equipment supported by standby diesel generator

18 off 25 tonne neutron shutters contain ionised radiation

Active ventilation installation.

Extensive use of modern device networks to minimise cabling

Instruments

Electrical Power Distribution. Detector cabling Chopper cabling IEC 61508 (PPS Interlock System). Motion Control.

Neutron Instrument: Principal sub-systems

Typical Electrical Power Distribution Summary • Approximately 35 off 230/400Vac Cables from the Distribution Board to beamline equipment • 300 Terminations Minimum.

• Approximate length of cable =1000 Metres.

Distribution Board.

• 10-20 off SCSI cables (includes 2 spares). • 8-16 off power cables (includes 2 spares). • 3 - 4 off Monitor cables. Total approximately 50 cables with 2700 terminations. Approximate length of cables = 1700 Metres

Typical Detector Cabling Requirement

• Minimum of 36 cables. • Approximately 360 terminations. • Approximate length of cable = 600 metres.

Chopper Cable Summary

Timing Rack to Chopper Racks. • 3 off 25 Core Belcom cables. • 3 off RG108 Co-ax cables. • 3 off 2 Core Belcom cables. Timing Rack to Choppers. • 3 off 4 Core Belcom cables. Chopper Racks to Choppers. • 4 off 2 Core K type screened cables. • 3 off Encoder cables (special). • 3 off Power cables (special). • 2 off Earth cables.

Chopper Racks to Water Panel. • 4 off 4 Core Screened cables. Chopper Racks to Condition Monitoring Box. • 2 off 6 Core Special cables. Chopper Racks to Condition Monitoring Box. • 2 off 4 Core Special cables. Others. • Cat5e cable from Condition Monitoring box and chopper timing rack. • Fibre.

INTERLOCK SOLUTION WILL BE FULLY 61508 COMPLIANT.

ENTIRE LIFECYCLE REQUIREMENTS ARE CLEARLY STATED.

HAZARD IDENTIFICATION OF RISKS.

FAULT TREE ANALYSIS OF PROPOSED Modus Operandi.

ISIS TARGET TOLERABILITY OF RISK

DETERMINE TARGET S.I.L. (SAFETY INTEGRITY LEVEL)

RESULTANT SAFETY SOLUTIONS WILL COMPRISE THREE INDEPENDENT SAFETY SYSTEMS.

COMMERCIALLY AVAILABLE SAFETY PRODUCTS SOLUTIONS.

IEC61508 Interlocks: Summary

Master Door Key

OPEN SHUTTER INHIBIT

Blue/White lighting

Sounders

Electronic Signage

Virtual Door

B.O.B.

Interrupt

Rockwell

Smart-Guard 600

Key

Exchange

B.O.B.s

ISIS TRIP

Search Buttons

Search Complete = Key Release

Master Door

O2 Monitor

Dual Guard Line Trip

Auxiliary Door(s)

Trip Mon.

Radiation Monitor

O2 Visual Alarm

Shutter Closed 1/1

Key Move

HMI

BEAM ON

1/2

2/1

1/2

2/2

2/2

2/1

1/1

1/2 Master Door Lock

Typical Beamline PPS

PPS Interlock Cable Summary

• Minimum of 100 cables • Installed in dedicated containment • Approximately 800 terminations. • Approximate cable length = 3.5 kM

Standard Beamline Motion Control Solution 32 axes of motion housed in a 2000 x 800 x 400 enclosure 1 x Galil controller per crate, 4 crates per enclosure (maximum) Individual axis drive amplifier modules, 3

variants (stepper, peizo and linear)

UPS and system power supplies housed in

base of enclosure

MOXA box (multiway Ethernet connection)

Floor mounted with no rear access requirement

Typical associated cable requirement is 1.2kM i.e. 15M max x 32 x 2 (encoder & motor power)

Thank you... Any questions?