LN2 Helium storagesourcingmanagement Serge Claudet TECRG 22 May 2019 LN2 storage tanks 35 units 10000L to 50000L Industrial supply standard Some specificities GN2 withdraw by boiling LN2 high purity for GHe20B dryers ID: 929777
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Cryogen management at CERNLN2 – Helium(storage-sourcing-management)
Serge Claudet, TE-CRG
22 May 2019
Slide2LN2 storage tanks
35 units 10’000L to 50’000L
Industrial supply (standard)
Some specificities:GN2 withdraw by boiling LN2 (high purity) for GHe-20B dryersDelicate tuning and repair of electrical heaters & associated anti-condensation system
SC - 22May'19
Cryogen@CERN
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Slide3Sourcing LN22 pluri
-annual industrial contracts
For the future, wish to have supplies from 2 different sources, being considered and evaluated for future tender
Yearly forecasts, monthly orders and invoices, weekly requests for trucks deliveries “per day”Smooth coordination despite large variations (scheduled months in advance or with short notice)
SC - 22May'19Cryogen@CERN
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Slide4CERN – LN2 contracts
B1365/TE – B1367/TE
Slide5SC - 11Oct'16
LN2 Contracts
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CERN-LN2,
monthly consumptions
LHC cool-down
Slide6LN2 – 2015: normal + back-up
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Cryogen@CERN
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Slide7LN2 – 2017: cool-down 1 sector
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Slide8LN2 - 2014: LHC cool-down
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Slide9HeliumSC - 22May'19
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Published articles ICEC-CEC:
- 1999: costing, including storage - 2013: LHe storage -2016: Helium management
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Slide11SC - 22May'19
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Slide12Sourcing Helium2 pluri
-annual industrial contracts, mostly Liquid, possibly GHe-200B trucks, with clause for external storage
Supplies from 2 different sources, “always” considered for many many years
Yearly forecasts, specific orders for a delivery on a precise day, with 3 days for emptying (or filling)Excellent coordination, small variations (scheduled months in advance) thanks to correct schedule follow-up and
LHe reservoirs to decouple needs-market evolutionSC - 22May'19Cryogen@CERN
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Slide13Slide14LHe – 2017: refill-normal-external
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Slide15LHe – 2016: regular year
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Slide16L. Delprat – Monday, May 6
th
– CRG-OP – LHC He Balance
LHC He CONSUMPTION SINCE 2007
Preliminary
Slide17SC - 22May'19
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Slide18SC - 22May'19
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Slide19SC - 22May'19
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Slide20Thanks for your attention and interest,and ready to contribute if useful
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