isis electrical engineering - meet the buyer event steve
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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)
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)
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
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
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)
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