Crab Cavities Activities Week 6 06/02/2017 Giovanna Vandoni

Week 5 overview

Cryo warm pipes - top of PA6 shaft Continues on Saturdays, however work is slowed down by the necessity to install equipment on Saturday morning and remove it again Saturday evening. We negotiated with EN/EL that RAM Power will be able to install welding post etc on Friday afternoon Radiological check DEKRA (2 personnes, 165336) welding controls in the shaft, Wednesday evening Un balisage de sécurité sera mis en place à partir de 18h - 18h30 début des tirs radiographiques à 19h. Pendant la période d’intervention il est strictement interdit de franchir le balisage mis en place. Nous ferons faire un balisage en tête de puit mais également en bas du puit.

EN/EL Cabling One of the big parts of the project, which takes place until week 11-12. (purple part on the planning)

Pipes installation in LSS6 Pipes arrived Friday, 175kg per 6m, meaning 30kg/m Discharged from the truck by transport, stored in cryo surface building (ATLAS) 3 segments lowered in TA6 VIC Monday 13/2: 13:00 on site PPSPS Fire Permit IS 37 missing Fiche de Tache Criotec not ready to start, will come back next week Missing piece

Pipes installation in LSS6 “Mode operatoire” tested with Altead + Ouvaroff Handrails of the scaffold removed, transverse beams installed 1 segment lifted with lift truck “a potence” Turned and slid through the scaffolding structure Transported in position Lowered on transverse beams and secured Tube 1 Tube 2 Thanks Altead, Ouvaroff, F.Bais, Jos

Still some work on the scaffold before Criotec arrives EN/EL/FC for consolidation of power cables insulation. Contact A.Jacob 162159 Intervention Thursday 9th Feb

Helium pump area Yellow survey support Helium Pumps Removed! …then TREC labelled twice by me… (sorry) Helium Pumps Need to be installed sufficiently in advance before end of EYETS, not to interfere with Cryoline transport and lifting Scaffold removal Installation of new handling rail Week 8 is possible, previous check with TIDVG removal Week 9 or 10 at latest