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Gas systems project
GAS M&O meeting 14 October 2019
Present: Beatrice, Roberto, Michal, Kacper, Andrea, Fred, Patrick, LPh, Sabino, Federico, Fabio
Indico: https://indico.cern.ch/event/855148/
ALICE #2001
- MTR
Reminder:
- mixer pressure regulation does not work: Zimmerli not installed
- exhaust pressure regulation does not work
- Dummy chamber: Arturo said he has no manpower to install the pipes. Beatrice said that we (gas team) will not pull the pipes
- TPC
- Rack pump re-building done: leak test on-going
- Final connection for TPC for the gas system
- Modification to add the filter in the distribution pipe
Reminder:
- LPh to prepare a summary on how the system is now —> in 2 weeks
- TRD
- elog 862 piquet:
- LPh found a leak in the exhaust of the analysis module (in the VBO)
- Second leak: LPh left open a manual valve din the calibration line
- elog 862 piquet:
Reminder
- Purifier: safety valve at the input where we have Ar or Ar/H2 at high pressure —> LPh to check with safety
- Purifier: to review if keep the safety valve or the rupture disk
ATLAS #2002
- CSC
Reminder:
- After the power-cut there was not communication with PLC: damage of differential circuit breaker —> to repair
- RPC
- Pump 3 maintenance
- Purifier filters modification started
- MDT
Reminder:
- Rack 68 (ch 17): one channel is keeping going to zero —> try to change the ELMB
CMS #1993
- RPC
- OFF
- Dummy chamber prepared with leak test
- RB0,-1 and -2 distribution rack prepared for dummy chamber
- Safety valves dismounted for calibration
- To finish the commissioning and testing of all pneumatic lines
- Geraldine and Marc working on the software
- Electrical work: elog 2000
- Purifier 3: new chassis ready. Mechanics work to do
Reminder:
- Rack 85: problem of pressure sensors in error —> Michal/Patrick to check
- DT
- Test for power cut for the exhaust line —> to do another test this week
- CSC
- Moving to Arcal10 for CSC for welding in SGX5
- Elog 1996: regulation valve of distribution rack 66
Reminder:
- Warning to set-up —> Beatrice/Michal/Roberto
- To check and correct level of oil in bubblers of distribution
- Problem on distribution: strange peaks in the regulation valve and some alarms due to low pressure in the rack —> to investigate
- GEM
- Channel 29: six chambers connected
- Channel 28: six more chambers to connect
- Reminder
- To modify the réseaux socket for the GEMPLC (now it is with TOTEM) —> Patrick/Michal
- Control rack: to modify power supply and electrical cable (still with TOTEM) —> Patrick/Michal
- 1 chamber in purge in CO2
- R134a recuperation
- Add line of Air for the R134a recuperation
- General
- Open/close plugs during open days and last Monday: 2 mbar more in the cavern caused a stop of CSC distribution racks
LHCb #1999
- RICH1
- in Run with CO2
- RICH2
- New pieces for high pressure for the recuperation of CF4 —> to check for high pressure
- GC
- PC is working but not the GC —> Mara to contact the company
Reminder:
- MWPC in run with Ar/CO2
- Rack 64 —> to investigate
PIQUET
- elog 866
- HH alarm of TPC distribution due to leak test on-going by Chilo
GENERAL
- Presentation of Federico for the surface treatment
- Very important to put the right title in the job
PLC/Software
Commissioning procedure:
- BE install software
- Michal and site technical responsible do commissioning
- if commissioning not finished:
- email to gas-piquet with status
- if possible force stop modules not commissioned
- elog (copy/past of email gas-piquet)
- whatsapp to 162516 (copy/past of email gas-piquet)
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