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

2. Week 5 overview

3. 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, )
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.

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

5. 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

6. 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

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

8. 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