1. 19/02/2014A. D'Auria CERN/PH-DT-DI1 2013 Maintenance ID flushing system:  Maintenance 2 dryers  Installation 2 flow meters  Maintenance of several hygrometers (flushing system, N2 supply from membrane system, …) ID flushing system PH-DT-DI 2013/2014 CMS activities 2013 Consolidation ID flushing system:  3 new gas distribution racks  Analysis rack  SX5 pixel lab dry air flushing and cooling distribution systems  Maintenance 2014 ID flushing system: ▫Replace filters in distribution racks ▫Calibration MFMs ▫Calibration safety valves

2. 19/02/2014A. D'Auria CERN/PH-DT-DI2 Muon Detector gas systems (CSC, DT, RPC)  Maintenance 2013 ▫Maintenance gas systems and analysis racks ▫Leak campaign test on RPC ▫Installation heating tape on RPC new pipe.  Consolidation/Upgrades 2013 ▫RPC Pump upgrade in USC55 ▫DT high flow setup. ▫Commissioning RPC RE+4. Gas systems for Muon detectors PH-DT-DI 2013/2014 CMS activities

3. 19/02/2014A. D'Auria CERN/PH-DT-DI3 Standard maintenance list PH-DT-DI 2013/2014 CMS activities 2013/2014 Gas systems/Analysis maintenance list: circulation pumps safety valves and bubblers power supplies profibus quality pressure regulators analysis devices change absorber in purifier check/repair pneumatic valves check/repair electro valves check/repair heating cables/connectors check/repair pressure regulators flow cells checking calibrations MFC

4. 19/02/2014A. D'Auria CERN/PH-DT-DI4 LS1 extraordinary maintenance list PH-DT-DI 2013/2014 CMS activities 2013/2014 Gas Detectors/Analysis extraordinary maintenance: Software upgrade RPC modifications to open output for Xmas 2014 Commissioning RPC RE-4. Repair recovery purifier column. CSC recovery CF4 - analysis rack CF4 maintenance/modifications/tests

5. 19/02/2014A. D'Auria CERN/PH-DT-DI5  A lot of activities completed/on-going during 2014  Many new consolidation projects for all experiments Conclusions