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Gas systems project
GAS M&O meeting 1 April 2019
Present: Beatrice, Patrick, Roberto, Kacper, Andrea, Michal, Fred, LPh
Indico: https://indico.cern.ch/event/808977/
ALICE #no elog
- TPC: need to weld a pipe and finishing pipes inside the clean room —> LPh to check with Chilo per deadline
- TPC pump need to send to company for maintenance
- MTR problem with humidifier (with GC we measure 1/3 of H2O with respect to the beginning of the test) —> LPh to investigate
- HMPID: changed FESTO module
- MTR: LPh explained the modifications to do in MTR.
ATLAS #1764
- ID flushing: 24 V power supply broken —> changed
- RPC O2 sensor prepared last week and to installed this week in “after pump”
- Some safety valves to check
- RPC distribution: new cables of flowcell needed —> to send for an external society —> Patrick to check with society
- Valve Island/FESTO module to install
From previous meeting:
- Flowcell for new RPC racks —> Kacper to give the flow necessary —> to decide if 3 or 5 mm
CMS #1762
- USC ODH test foreseen after Easter (half a day). Keep in mind that we can move to dry air
- USC FESTO block to change after Easter —> need to stop all gas systems
- RE-1 and RE-2 connection in the cavern on-going: RE-1 connected and lines tested
- New FESTO block will be installed next year
- CSC restarted on Friday and this week we re-start the CF4 recovery
- GEM missing pipes in USC —> Zec
- RPC pre-distribution need to modify two racks for RE3.1/4.1
From previous meeting:
- Need to stop RPC 2 weeks —> after Easter, to coordinate with some maintenance
LHCb #1763
- RICH1 buffer in place, pipe connected, need to connect bubbler and pressure sensors
- RICH2 membrane: pressure test on Wednesday. Already started to prepare: need to change Ar pressure reducer
- CF4 compressor in aging test for 2 weeks
- MWPC to change membrane pump
- SciFi trolley: software tested in laboratory —> test in place on Wednesday
PIQUET
- Problem with rack 61 in CMS CSC —> Leak in pneumatic lines —> Andrea to check today
GENERAL
- Need to test of O2 chemical sensor for aging/outgassing —> Beatrice to see how to do
- For the back-up system need to check what we have in CMS RPC
- Fred show the maintenance plan for the mixer that he prepared
- Discussion on safety valves in the mixer (line#10 in the excel file)
- Add check in WinCC-OA
From previous meeting:
- Back-up with TESCOM —> to check where we have them in the back-up systems
- Kacper found dirty stuff in the ID flushing Krohne —> to check the CMS CSC Krohne when system will be in stop
PLC/Software
- Discussed planning for after Easter: need to move CSC and DT at ~ mid June. ALICE TRD foreseen at beginning of september, maybe to move?
- Reminder: there is also CLOUD software to modify: from 15/07 for all summer
- Profibus: two more weeks of delay (starting from tomorrow)
- TN router change: planning in INDICO
- for data server —> 4 hours without communication
- for router (where PLC connected) —> 4 hours without communication
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