LHC Civil Engineering Activities for YETS – LS2 YETS - LS2 Coordination Meeting 03 Octobre 2017 LHC Civil Engineering Activities for YETS – LS2

Activities Overview - YETS Task Name Duration Requestor Area Safety ECR support needed Link Impact generated LHC - YETS (12/12/17 --> 23/03/17)   Point 1 Professional visits Dec->Mar SMB/SE RR17 - RR13 / Installation of optical target and initial survey 2 days RI171 - 2 futurs connections EN/ACE-SU 1-Yets Coring of the concrete floor for installation GGPSO 1 day C04R1 / RI17 /DCUM 161 YES HSE/RP - EN /ACE-SU No Passage C04L1 / RI13 /DCUM 26497 2-Yets LS2 Storage Platform 2 months Atlas Surface VIC LS2 move the fence 10 Days protection for water cooling towers 3 Days EN/CV 3-Yets Sector 3-4 Lateral channel cleaning + culverts 3 days Inspect for Leaks Sector 3 - 4 Installation polyéfine Band 2-4 days EN/HE 4-Yets Consignation GMR Dessableurs cleaning C25L4 Drain Inspection Point 5 RR53 - RR57 R571 - 2 futurs connections 5-Yets C04L5 / R532 /DCUM 13247 6-Yets Excavation in the concrete floor for installation of a lifting platform * 10 days UL55 - USC55 EN/CV-EN/EL- HSE/RP 7-Yets CMS Storage Area / Move the fences CMS 8-Yets In progress Point 7 Dismantling Access PZ76 BE/ICS Check sump pit and pump PM76 * Work for Yets is still to be confirmed HILUMI Project Works for other Goups Maintenance

Activities Overview – LS2 Task Name Duration Requestor Area Safety ECR support needed Link Impact generated LHC - LS2 (DEC 2018 --> DEC 2020)   base chantiers Point 1 professional visit and EDL With contractor 18 --> 20 SMB/SE RR13 --> RR17 / Installation of monitoring tools for geometry survey and regular survey 9-LS2 Connection of the UPR 17 in 2019 Sep --> Nov RI171 / C05R1 --> C07R1 VIC YES EN/CV, EL, HE - HSE/RP No Passage Connection of the UPR 13 in 2020 Mar --> June RI132 / C04L1 --> C06L1 10-LS2 No passage Gallery and duct construction in 2020 June --> Dec surface 11-LS2 Point 2 New Computing farm 6 months Alice Surface Point 3.3 Dismantling Access PZ33 10 days BE/ICS Surface PZ33 EN/CV - EN/EL No Access Sector 3-4 Lateral channel cleaning + culverts 3 days RP Inspect for Leaks 1 day Sector 3 - 4 Installation polyéfine Band 2-4 days Consignation GMR replacement old iron sheets of recovery water 15 days Dessableurs cleaning 2 days Sector 3-4 / C25L4 Drain Clearing 80 Days 18-LS2 Point 4 Dismantling Access PZ45 Surface PZ45 Technical gallery for Surface Cryogenics Point 5 Dismantling Access PZ56 Surface PZ56 RR53 --> RR57 12-LS2 Connection of the UPR 57 in 2020 Feb --> Apr R571 14-LS2 Connection of the UPR 53 in 2020 May --> July R532 13-LS2 Excavation in the concrete floor for installation of a lifting platform EN/HE UL55 - USC55 EN/CV, EL - HSE/RP 7-LS2 (Yets or LS2) Gallery and duct construction 2020 No 15-LS2 SXA 5 Building 2019 -> 2020 Atlas 16-LS2 Point 7 Dismantling Access PZ76 Surface PZ76 Check sump pit and pump PM76 EN/CV Point 8 LHCB 17-LS2 Waiting for informations HILUMI Project Works for other Goups Maintenance