GAS M&O meeting 11 March 2019
Present: Beatrice, Fred, Patrick, Andrea, Michal, Roberto, LPh, Kacper, Luca
ALICE #1726
- Preparing pipes for the TPC clean room —> to do this week or max the next
- MTR: test still on-going.
- HMPID: safety valve mixer changed
- MTR back-up: it has to be Freon —> LPh to check
- MTR back-up is done with pressure reducer+rotameter: to check pressure when it opens
ATLAS #1728
- Starting some mechanics for RPC distribution racks
- Flowcell for new RPC racks —> Kacper to give the flow necessary —> to decide if 3 or 5 mm
- ID flushing maintenance in w12/13
CMS #1724
- RPC and GEM distribution racks almost completed —> negative side to send by end of the week
- RPC distribution flowcell: verification cable and resistance for the rack in the workshop: file excel in Gas_Group/DistributionRack prepared by Patrick
- Dummy chamber: to add the new flowcell to each manifold —> to start with racks in the surface —> Andrea to coordinate with Patrick
- No quick on the manifold —> leak test postponed when the quick will arrive (so it will be done in the cavern)
- Electrical chassis will be added at the end of the installation in the cavern
- GEM pre-distribution and pump module in place —> missing pipes and cabling
- Dummy chamber —> Beatrice too check with RPC people
- DT ELMB reading card problem: no reading of the flow since 22th Jan (email from Daniel). DT ELMS Status: red square due to PowerSupply new logic —> it will be changed with new software
- Valve island/pneumatic pipes —> need to stop RPC system for 2 weeks —> to coordinate with some standard maintenance
LHCb #1727
- RICH1 buffer ready —> waiting to have access in the cavern (priority to dismount detectors)
- RICH2 batteries test —> done at 200 bar (valide for 140 bar)
- RICH2 old compressor: asked to disconnect water and then dismount it —> this week
- RICH2 compressor: to decide the way to recuperate gas —> Beatrice/Patrick to discuss
- GEM stopped
- SciFi: trolley ready, cabling done, leak test done. Missing software —> Michal this week
- MWPC rack 64 there is a problem in the distribution rack: since mid January there were 200 l/h less —> Patrick to investigate with LHCb people
PIQUET
GENERAL
- Kacper to present the list of Krohne for Exhaust to check what we really need to change
- Back-up with TESCOM —> to check where we have them in the back-up systems
- Red pneumatic valves: several types of leaks and not spare pieces available on the market —> move to Swagelok when we need to change
- Pressure sensor on filter for pump —> Kacper/Andrea to see. Two options: replace with the new inox (large surface) or keep the glass one
PLC/Software
- Elog for CMS RPC PLC #1712
- Profibus card: delay of maximum 3 weeks. In the meanwhile we use some cards from Marc
- MCH PLC replacement/software: done but some bugs to fix
- Next systems to do: CPV and TOTEM + debugging
- 301 and 303 (on the mixer) are not supported for new WAGO and there is problem with new software —> need to change —> Patrick
- Excel file about CMS RPC distribution pressure sensor done by Patrick: Gas_Group/CapteurDePression/2019 —> Beatrice/Patrick to check
There are minutes attached to this event.
Show them.
