MTTR and spare parts policy for BT equipment for BT equipment BT equipment with long MTTR • PSB • ISOLDE ISOLDE • LEIR • PS • SPS • SPS Stand-by service and expert call-out lists Conclusions With input from: B Balhan E Carlier L Ducimetière T Fowler T Masson V Mertens B.Balhan, E.Carlier, L.Ducimetière, T.Fowler, T.Masson, V. Mertens 23/1/2008 ATC/ABOC days MTTR and spare parts policy for BT equipment
AB/BT equipment in PS complex BT equipment in the PS Complex ISOLDE ISOLDE East Hall AD PSB PS cv CTF3 LINACs PS Complex LEIR kicker systems magnetic Septa electrostatic Septa MTTR and spare parts policy for BT equipment
PSB extraction kickers Common spare (hence not installed) for HV cable for extraction and recombination kickers leads to long MTTR . BE.KFA magnets inside the vacuum tank, no spare vacuum vessel available no spare vacuum vessel available. Name Magnets HV Pulse Recovery from major Failure Spares Generator fault likelihood BE.KFA 4 per ring Individual, HV Pulse generator: days Medium Full spares for pulse generator connected one for Oil/Gas system: days Medium Full spares for oil/gas system in parallel. each ring HV cable: weeks Low Common spare with BT.KFA Magnet: weeks Low Magnet spares in parts only No spare 14L1 vacuum tank Vacuum tank: weeks Low 23/1/2008 ATC/ABOC days MTTR and spare parts policy for BT equipment
PSB kickers PSB kickers Name Magnets HV Pulse Recovery from major Failure Spares Generator fault likelihood BI.DIS BI DIS 5 5 Individual Individual HV Pulse generator: days HV Pulse generator: days Medium Medium Full spares for pulse generator Full spares for pulse generator Oil/Gas system: days Medium Full spares for oil/gas system BI.KSW 4 per ring g Individual, HV Pulse generator: days g y Medium Full spares for pulse generator g connected one for Magnet: weeks Low Spares for all four magnet types in parallel. each ring Vacuum tank (1L1): weeks Low No spare 1L1 vacuum tank BE.BSW 3 per ring Individual, HV Pulse generator: days Medium Full spares for pulse generator connected connected one for one for Magnet: weeks Magnet: weeks Low Low Spares for both magnet types Spares for both magnet types vertically each through magnet the four group rings rings BT.KFA 3 : R4- Individual HV Pulse generator: days Medium Full spares for pulse generator >R3, Oil/Gas system: days Medium Full spares for oil/gas system R3+4->R2, HV cable: weeks Low Common spare with BE.KFA R1->R2 Magnet: weeks Low 2 spare magnets plus parts Vacuum tank: w eeks Low Spare KFA20 tank only Only partial spare parts inventory is defensible because of modularity, some redundancy, combined with low risk and high capital investment to achieve full spares for (sometimes) unique equipment. 23/1/2008 ATC/ABOC days MTTR and spare parts policy for BT equipment
PSB Recombination septa BT.SMV10 In 2004 a new strategy was adopted to consolidate the PS complex septa which are part of the LHC injector chain and of the LHC injector chain and to build additional spares. As a result, from 2008 the PSB transfer septa follow a PSB transfer septa follow a As a result , from 2008 the PSB preventative exchange transfer septa follow a preventative programme to reduce the exchange program to reduce the likelihood of a failure during the run, likelihood of a failure during g based on failures of similar the run, based on failures of equipment. This was previously similar equipment. This was impossible. previously impossible. Name Magnets Failure Recovery from major fault Spares likelihood 2 2 nd choice spares ( to be rebuilt) 2 2 nd choice spares ( to be rebuilt) BT SMV10 BT.SMV10 2 : R4 >R3 2 : R4->R3, medium medium Magnet: weeks Magnet: weeks R1->R2 Vacuum tank: w eeks and 2 full operational spares as from mid 2008. 2 nd choice spare to be rebuilt. BT.SMV20 R3+4->R2, medium Magnet: weeks Vacuum tank: w eeks Additional spare to be built 2008. 23/1/2008 ATC/ABOC days MTTR and spare parts policy for BT equipment
PSB septa PSB septa In the framework of the Linac 4 project, the Booster Injection septa (presently more than 30 years in operation) will be replaced. Name Magnets Failure Recovery from major fault Spares likelihood BI.DIS 5 low Magnets: days 2 spare magnet blocks Vacuum tank: weeks No spare magnet tank BI.SMV 3 possible Magnet: weeks Full spare magnet Vacuum tank: weeks BI.SMH 4; possible Magnet: weeks 2 stacks of spare magnets 1 per ring Vacuum tank: weeks BE.SMH 4; low Magnet: weeks full spare system 1 per ring Vacuum tank: weeks 23/1/2008 ATC/ABOC days MTTR and spare parts policy for BT equipment
LEIR kickers ER.KFH31 vacuum tank. No spare foreseen, but it should be possible to extract should be possible to extract with only two magnets. Half of DFH21 around its ceramic vacuum chamber (for which a vacuum chamber (for which a spare is available, but not under BT responsibility) Full spare magnet becoming available in 2008 il bl i 2008 Name # HV (Pulse) Recovery from major Failure Spares Generator fault likelihood ER.KFH 3 Individual HV Pulse generator: days Medium Full spares for pulse generator Oil/Gas system: days Medium Full spares for oil/gas system Magnet: weeks Low No spare magnet V Vacuum tank: weeks t k k L Low N No spare vacuum tank t k (Could be possible to extract with only two magnets) ER.DFH 4 1 common HV Pulse generator: days g y Medium Full spares for pulse generator p p g Magnet: days Low Spare magnet should be available end 2008 23/1/2008 ATC/ABOC days MTTR and spare parts policy for BT equipment
LEIR Injection electrostatic septum ER.SEH10, extraction septum ER.SMH40 LEIR extraction septum SMH40. Vacuum chamber most stressed component, together with septum insulation. Spare vacuum chamber being finished. Electrostatic injection septum SEH10. No spare available; only spare available; only delicate and long lead items are kept in spare. N Name M Magnets t R Recovery from major f j F il Failure Spares S fault likelihood 1 Magnet: day Low 1 full spare Vacuum chamber: weeks Low No spare vacuum chamber p ER.SMH11 S 1 Septum: weeks Low Spare HV components of critical parts available ER.SEH10 Failure will need rebuild of installed device. HV generator: day Low Spare HV generator installed online ER.SMH40 1 Magnet: day Low Spare magnet available. Vacuum chamber: weeks Medium Spare vacuum chamber completed in 2008. 23/1/2008 ATC/ABOC days MTTR and spare parts policy for BT equipment
PS injection kickers kickers KFA45 (protons) vacuum tank No vacuum tank. No spare tank available. KFA28 (ions) vacuum tank. No spare tank tank. No spare tank available. Name Magnets Recovery from major Failure Spares fault (worst case) likelihood PI.KFA45 4 HV Pulse generator: days Medium Full spares for pulse generator Oil/Gas system: days Medium Full spares for oil/gas system HV PFN cable: weeks Low One spare 80kV PFN cable Magnet: weeks g Low One spare magnet p g Vacuum tank: weeks Low No spare vacuum tank PI.KFA28 1 HV Pulse generator: days Medium Full spares for pulse generator Oil/Gas system: days Medium Full spares for oil/gas system HV PFN cable: days HV PFN cable: days Medium Medium One spare 40kV PFN cable set One spare 40kV PFN cable set Magnet: weeks Low Parts for one spare magnet Vacuum tank: weeks Low No spare vacuum tank 23/1/2008 ATC/ABOC days MTTR and spare parts policy for BT equipment
PS fast extraction kickers PS fast extraction kickers KFA71-79 pulse generators. The twelve modules allow some redundancy on most user cycles. t l KFA71-79 kicker KFA71 79 kicker magnet. Building of new spares (in common with MTE) is presently postponed. l d Name Magnets Recovery from major Failure Spares fault (worst case) likelihood 12 12 PE KFA PE.KFA HV Pulse generator: days HV Pulse generator: days Medium Medium Full spares for pulse generator Full spares for pulse generator (SS71: 9) 71-79 Oil/Gas system: days Medium Full spares for oil/gas system (SS79: 3) HV PFN cable: days Low Redundancy available ( normally maximum 10 of 12 modules used) + spare cable in B.367 Magnet: weeks Magnet: weeks Low Low Two spare tanks one equipped with 9 spare Two spare tanks, one equipped with 9 spare Vacuum tank: weeks Low magnets, one empty (3 magnets taken for use in the new MTE system) 23/1/2008 ATC/ABOC days MTTR and spare parts policy for BT equipment
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