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Preparation cool-down of Sector 78, 20 Nov

Sector_78_Preparation_of_Cool_Down_w47.pdf:
https://twiki.cern.ch/twiki/pub/HCC/BlogEntryPoint8x2006x11x20x19x42/Sector_78_Preparation_of_Cool_Down_w47.pdf

RAT_20061120.pdf:
https://twiki.cern.ch/twiki/pub/HCC/BlogEntryPoint8x2006x11x20x19x42/RAT_20061120.pdf

Sector_78_Preparation_of_Cool_Down_w47.mpp:
https://twiki.cern.ch/twiki/pub/HCC/BlogEntryPoint8x2006x11x20x19x42/Sector_78_Preparation_of_Cool_Down_w47.mpp

Comments:

AC non-conformity

• 13.11.06 Non-conformity of the crates of cryo instrumentation (inrush current)
• 13.11.06 Non-conformity of the AC cabling of the crates under the magnets. This concerns ACR, MEL, orbit corrector power converetrs & VAC.
• 13.11.06 Non-conformity of the DC cabling of the orbit corrector power converters

DC cabling

• 13.11.06 6 kA and 13 kA cables positioning at DFBAO, DFBMA and DFBMC
• 13.11.06 120 A cable connections in DFBAO, DFBMC, DFBMA and DFBX LSS8L
• 17.11.06 600 A cable positioning on DFBA
• 20.11.06 Connections (made by TS/MME) of 120 A cables to be verified (TS/EL)
• 20.11.06 Connections of 600 A cables to the DFBAO to be verified
• 20.11.06 Flohe on DFBAO or DFBAM? To be decided

Assembly - Vacuum

• 20.11.06 21 leak detectors to be placed all along the arc 78
• 17.11.06 Bellows damaged in Q6-Q7 LSS8L

Cryogenics

• 20.11.06 DFB instrumentation cables to be connected
• 20.11.06 leaks on DFBAO in reparation
• 17.11.06 Instrumentation cable HV tests in LSS8L
• 17.11.06 Pressurized air supply to valve on WRL
• 13.11.06 Support on DFBAO WRL

DFB Commissioning

• 17.11.06 Prototype of galvanic insulation to be tested at Point 6
• 13.11.06 ElQA-TP4-A in the DFBAO, DFBAN, DFBAX
• 17.11.06 Pumping of insulation vacuum will start next week in 7R

Safety General remark: written communication in advance to announce operations!!!

• 16.11.06 Cool down safety procedure & access conditions
• 16.11.06 Definition of Safety procedure for Powering Procedure Test (aka Dry Runs)
• 17.11.06 Monorail in Point 8 locked off on Monday (20.11) starting from 10.30!!!

Preparation of powering test

• 16.11.06 Water circulating in UA83 for the Powering Procedure Test: filters need to be cleaned!

AOB

• 13.11.06 BPM connection in Q2, Q3, Q4, Q5, Q6, Q7
• 13.11.06 Quench protection continuity tests and cables assignment LLS7R (DFBMH, DFBAN) and LSS8L (DFBMC, DFBMA and DFBX) -- Main.bellesia - 20 Nov 2006 - 19:53