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Consolidation and major changes that have impact on the powering circuits

[R. Alemany] [CERN AB/OP] [Engineer In Charge of LHC] HWC Workshop (19.03.2009). Consolidation and major changes that have impact on the powering circuits. I. Major changes. QPS Individual System Test (IST), PC IST, PIC IST PT: Powering Test

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Consolidation and major changes that have impact on the powering circuits

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  1. [R. Alemany] [CERN AB/OP] [Engineer In Charge of LHC] HWC Workshop (19.03.2009) Consolidation and major changes that have impact on the powering circuits

  2. I. Major changes QPS Individual System Test (IST), PC IST, PIC IST PT: Powering Test a. Only Mains; b. PC Short Circuit Heat Run because of Sep19 IST IST IST May go ~ 100 K May go > 100 K

  3. Miscellaneous IST IST IST

  4. PC IST IST IST

  5. PIC / WIC IST IST IST

  6. CRYO IST IST IST a Thermo switches will be installed everywhere but only connected for the high current circuits in s78 and sector 81 (other later, due to short time for cabling)

  7. CRYO IST IST IST

  8. New relief valve scheme Vacuum barrier Vacuum barrier Quench valves on cold mass circuit QV DN50 Insulation vacuum pressure relief devices SV  DN90 Chamonix 09 V. Parma

  9. Types of valves DN200 Replacing clamps with spring-loaded clamps Chamonix 09 V. Parma

  10. nQPS • Suspicious splice detection (UTH = 300 µV, 10 s) • Detection of symmetric quenches • Voltage to earth detection K. Dahlerup-Petersen

  11. Exchange of DC cables for circuits powered from UJ33 (RQT4/5.R3)

  12. Exchange of DC cables for circuits powered from UJ33 (RQT4/5.R3)

  13. Exchange of DC cables for circuits powered from UJ33 (RQT4/5.R3)

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