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Created by Main.BorisBellesia on 2006-12-08 - 17:54

60A converter tests - Friday 7th Dec.

Advancement of today:

• AB-PO activities on cells C24-30_R7
• 4 hr run in C12_R7-C22_R7 and C32-C34_R7 and C28-C32_L8 simultaneously (shortened version of the 24 hr run)
• AB-PO main activity ended today;
• Polarity tests on cells C24-26_R7

Monday activities:

• AB-PO - tests on faulty cells: - C34_L8 - 1 converter in C32_R7 - 1 converter in C12_R7 - no problems for coactivities.
• Polarity and conneciton in C28-32_L8 / C30-34_R7; no problems for coactivities
• ELQA in C18-26_L8; co activities limited - a trolley is used

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Created by Main.MircoCoccoli on 2006-12-08 - 10:27

Preparation for Cool Down RAT - Dec 8

RAT_20061208.pdf:
https://twiki.cern.ch/twiki/pub/HCC/BlogEntryPoint8x2006x12x08x10x17/RAT_20061208.pdf

IMPORTANT: PLEASE COMMENT ON THE OPEN ISSUES IF YOU FIND THEM INCORRECT, INCOMPLETE OR NOT-PERFECTLY UPDATED.

AC non-conformity

• 07.12.06 Non conformity in DFBMH, DFBAN and DFBXG current lead heaters (P.Chambouvet-J-C.Guillaume)
• 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 & VAC.

DC cabling

• 30.11.06 Non conformity temperature sensor cables need repair LSS7R (D.Bozzini, A.Suraci)
• 25.11.06 Functional test on the leads heaters: DFBAO, DFBXG (P.Chambouvet)
• 22.11.06 Pre-connection of 120A cables in LSSR7 (TS/EL) – PC Non conformities (H.Thiesen)

Vacuum -

Cryogenics

• 22.11.06 Cryo-valves remote control in CCC by AB/CO (F.Millet)
• 22.11.06 Control of quench valve (F.Millet)

DFB Commissioning

• 29.11.06 Pumping of Current Leads insulation vacuum for DFBX (S.Feher)

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

• 23.11.06 Wooden structure for UA access restriction (that will allow transport).
• 23.11.06 Water leak on the tunnel concrete wall to be fixed (C33L8).

Preparation of powering test

• 30.11.06 El_QA performed on C16L8. ICC test showed reversed sequence of V-taps on circuit RCBV16.L8B1 (D.Bozzini)

AOB

• 13.11.06 BPM connection in Q2, Q3, Q4, Q5, Q6, Q7–wk50 (J-C.Guillaume & R.Jones)

MircoCoccoli - 08 Dec 2006 - 10:17

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