YETS 2017 TE-CRG-OP overview of tasks to perform during the first month. 2017-10-09_GF YETS2017_CRG-OP

Time schedule See KB presentation 2017-10-09_GF YETS2017_CRG-OP

Maintenance tasks foreseen 2/2 ATLAS MR/SR: Replace oil pumps (magnetic coupling) Update plateform for solenoid dewar Install new pumping system MRCB Consolidation SOL control rack? Upgrade CPU (MR) Replace communication link pump 2 Cold boxes/ Comp software update ANRS Water tanks refurbishing Add 3 ways valves and redundant SV CMS Upgrade CPU and vacuum measues Charcoal Adsorber insultation refurbishing (calorifuge) Oil retention to build under new oil separator Add 3 new purges line (charcoal filter outlet, HP/LP line CS-CB) All: instrumentations/small mechanical upgrade 2017-10-09_GF YETS2017_CRG-OP

Maintenance tasks foreseen 1/2 LHC Compressor stations SACO and associated instrumentation to replace/rewire Sealing to inspect/replace: QSCA-4-CPA, QSCA-8-M02, QSCB-18-2P640, QSCB-8-M06 Small mechanical maintenance Piping to clean QSCCB_P18 Instrumentation to check/exchange LHC Cold boxes Valves to replace TU7_LHCA-P4 to exchange Turbines instrumentation to inspect/replace Self regenerated Colling water filter (prototype) to install P6 Cold compressor calibration/recover data 2017-10-09_GF YETS2017_CRG-OP

Controls tasks foreseen LHC Update data server/FEC PLC reload with individual FF and software updates 8 Premium to replace Interlock review and associated software update; only 1 hardware modified (QSCA_P6) with simplified safety chain. Prototype updated Cold compressor control (remove “kundig” plc and install soft in UNICOS) for prototype LHCA_P8, TBC Minors updates. 2017-10-09_GF YETS2017_CRG-OP