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Preparation for Cool Down sec.78 - Nov 29

RAT_20061129.pdf:
https://twiki.cern.ch/twiki/pub/HCC/BlogEntryPoint8x2006x11x29x18x25/RAT_20061129.pdf

Sector_78_Preparation_of_Cool_Down_w48.mpp:
https://twiki.cern.ch/twiki/pub/HCC/BlogEntryPoint8x2006x11x29x18x25/Sector_78_Preparation_of_Cool_Down_w48.mpp
UPDATED PLANNING (comments are welcome!)

Open Issues:

AC non-conformity

• 21.11.06 Non-conformity on instrumentation cables (temperature sensors on current leads) (A.Suraci: 3 cables are in repair-Wed.29th)
• 13.11.06 Non-conformity of the crates of cryo instrumentation (inrush current) (A.Suraci: ready next year)
• 13.11.06 Non-conformity of the AC cabling of the crates under the magnets. This concerns ACR, MEL, orbit corrector power converters & VAC.

DC cabling

• 25.11.06 Functional test on the leads heaters: DFBAO, DFBMA, DFBMC, DFBXG
• 22.11.06 Pre-connection of 120A cables in LSSR7 (TS/EL)
• 20.11.06 Galvanic insulation installation on all DFBs (AT/MEL)
• 13.11.06 Non-conformity of the DC cabling of the orbit corrector power converters
• 13.11.06 6 kA and 13 kA cables positioning at DFBAO, DFBMA, DFBMC, DFBAN (Flohe)

Assembly - Vacuum - Cryogenics

• 22.11.06 Cryo-valves remote control in CCC by AB/CO
• 22.11.06 Control of quench valve
• 20.11.06 DFB instrumentation cables to be connected (A.Suraci: 80% done)
• 17.11.06 Instrumentation cable HV tests in LSS8L (A.Suraci: 4 cables to be tested)

DFB Commissioning

• 29.11.06 Definition of owner of activity and pumping needs for current leads insulation vacuum (DFBX)
• 29.11.06 Pumping of insulation vacuum for DFBX
• 13.11.06 ElQA-TP4-A for all DFBs between 7 and 8 (D.Bozzini: next(w48): DFBAO HC module, DFBMA, DFBMC, DFBX))

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

• 25.11.06 ElQA-TP4B safety procedure (1900 volts tests!).
• 23.11.06 Wooden structure for UA access restriction (that will allow transport).
• 23.11.06 Preparation of a prototype insulating protection (derived from a plastic tube) of the monorail by J-C.Guillaume and approval by J.Etheridge.
• 23.11.06 Water leak on the tunnel concrete wall to be fixed (33L8).
• 16.11.06 Cool down safety procedure & access conditions

Preparation of powering test

• 22.11.06 Pretest of 60A converters in sector 78, location C16L8. (B.Bellesia: stopped due to LQA hardware problems; expected end by Tuesday 28 Nov)
• 22.11.06 Installation of flexible cables by CV (UA83)
• 16.11.06 Water circulating in UA83 for the Powering Procedure Test: filters need to be checked.

AOB

• 13.11.06 BPM connection in Q2, Q3, Q4, Q5, Q6, Q7–wk49 (J-C.Guillaume & R.Jones)
• 13.11.06 Quench protection continuity tests and cables assignment LLS7R (DFBMH, DFBAN) and LSS8L (DFBMC, DFBMA and DFBX)