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Created by Main.MirkoPojer on 2006-11-17 - 16:54

Preparation of cool-down in sector 78, 17 Nov

RAT_20061117.pdf:
https://twiki.cern.ch/twiki/pub/HCC/BlogEntryPoint8x2006x11x17x16x48/RAT_20061117.pdf

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

Assembly -

Vacuum

• 17.11.06 Leak in arc (Q11-8L)
• 17.11.06 Bellows damaged in Q6-Q7 LSS8L

Cryogenics

• 17.11.06 Instrumentation cable HV tests in LSS8L
• 17.11.06 Cryogenic valve manipulation on DFBX
• 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 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)

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Created by Main.JacekSzkutnik on 2006-11-17 - 14:41

Essais en court-circuits UJ56 et RR57

Bonjour,

Les visites des installations électriques des ouvrages cités en objet ont été réalisées à ce jour. Aucune non conformité ne s'oppose à ce que les essais en court-circuit soient effectués à partir du 20 novembre 2006. Les rapports de visite parviendront ultérieurement aux responsables de chaque installation.

Cordialement,

Caroline BENOIT-GONIN Norisko Equipements pour SC/GS Office 57-2-024 caroline.benoit-gonin@cernNOSPAMPLEASE.ch

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Created by Main.RosarioPrincipe on 2006-11-17 - 12:09

Test on the DQSQD switch, today Friday Nov 17.

Please find enclose a small report of the tests held in UA63 concerning the 13kA switch DQSQD.

Regards

RAT_20061117.pdf:
https://twiki.cern.ch/twiki/pub/HCC/BlogEntryPoint6x2006x11x17x12x07/RAT_20061117.pdf

Comments:

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