EA meeting, Wednesday 6 Dec 2006 TT installation, Jeroen van Tilburg 1 TT installation Installation...
-
Upload
elvin-farmer -
Category
Documents
-
view
217 -
download
0
Transcript of EA meeting, Wednesday 6 Dec 2006 TT installation, Jeroen van Tilburg 1 TT installation Installation...
EA meeting, Wednesday 6 Dec 2006 TT installation, Jeroen van Tilburg 1
TT installation
Installation of the TT station
EA meeting, Wednesday 6 Dec 2006 TT installation, Jeroen van Tilburg 2
Preparations
• PPSPS document written, WPA meeting yesterday.• Transport: Monday 11th of Dec from ZH to CERN.
• Transport boxes (see next slides).• Transport from CERN-Meyrin to pit 8.
→ custom formalities.
• Exercised station assembly and cooling in ZH.• See next slides.
• Requirements in cavern: • Magnet balconies and ladders.• Platforms (4.2m and 5.2m).
→ cover plates 4.2m platform C-side missing.
• Cranes (SX8, UX85, RB84).• Iron blocks for cable chain support.
→ still to be welded to magnet.
• Co-activities• VELO RF-boxes: no welding while tank is open.• Preparations for the beam pipe installation.
EA meeting, Wednesday 6 Dec 2006 TT installation, Jeroen van Tilburg 3
OrganizationWhen: week 50, starting Monday 11-12-06Who: from ZH: Stefan Steiner, Angela Buechler, JvT
from CERN: transport, crane operation
Steps1. Transport of 2 aluminium C-frames (1 box) and 4 filled cable chains (4 pallets)
from surface to cavern using crane in SX8. 2. Transport in cavern of C-frames onto RB84 platform.3. Installation of C-frames onto TT rails.4. Transport in cavern of cable chains to RB84 platform.5. Installation of the cable chains.
EA meeting, Wednesday 6 Dec 2006 TT installation, Jeroen van Tilburg 4
Step 1: Transport surface to cavern
• The C-frames are lowered in the pit in a wooden box using crane SX8.
• Each cable chain (filled with cable) is lowered on a EURO-pallet with side panels and top cover using crane SX8.
• All boxes are moved with forklift in reach for the UX85 crane.
Box dimensions: 2800x1700x1140 mm3.Weight: 1020 kg.
Reinforcement for the use of straps.
Dimensions: 800x1200x500 mm3
Weight: 120 kg.
If possible return euro-pallets to transport company by interchanging with empty ones.
EA meeting, Wednesday 6 Dec 2006 TT installation, Jeroen van Tilburg 5
Step 2: Transport C-frames in cavern
• Take C-frames out of box using UX85 crane.• Move 1 C-frame to 4.2 m RB84 platform (A-side).• Move other C-frame over the magnet to 5.2 m platform (C-side).
Plastic hoses for protection of the straps
C-frame envelop:2750x1400x500 mm3.
Weight: 250 kg.
Standard lifting tool (palonier) required.
EA meeting, Wednesday 6 Dec 2006 TT installation, Jeroen van Tilburg 6
Step 3: Put C-frame on rails
• Move C-frames in front of TT rails using small manual forklift.• C-frame rests on support blocks.
• C-frame is lifted in “normal” (vertical) position using the RB84 crane.• C-side: additional turn around vertical axis required.
• C-frame is lifted onto the 2 L-brackets connected to the TT rails.• C-side: Put L-brackets below 5.2m platform on 4.2m platform.
No dismantling of 5.2m platform needed.
The C-frame is lifted in “normal” position.
The L-brackets for gliding the C-frame on the rails.
The C-frame is lifted by its first hole.
EA meeting, Wednesday 6 Dec 2006 TT installation, Jeroen van Tilburg 7
Step 3: Put C-frame on rails
• Push C-frame on the L-piece manually towards rails.• When C-frame is located above gliders on rails
→ lower positioning screws on L-piece until C-frame is standing on gliders.• Straps remain attached to the crane for safety. Additional strap around upper rail.
• Fix C-frame to gliders on lower rail. Finally, fix it to guiders on upper rail.• Access to guiders possible from TT balcony mounted on magnet.
• Install hard stops.
The C-frame is positioned on the L-pieces.
The C-frame is manually pushed to the its position above the rails.
Full station (incl. dummy module)
EA meeting, Wednesday 6 Dec 2006 TT installation, Jeroen van Tilburg 8
Step 4: Cable chains to platform• Install cable chain supports.• Use UX85 crane to move the 4 cable chain boxes to 4.2 RB84 platform (A-side).• Unpack all cables chains on platform.
EA meeting, Wednesday 6 Dec 2006 TT installation, Jeroen van Tilburg 9
Step 5: Cable chain installation
• Lift 2 cable chains to C-side using UX85 or RB84 crane.• Mount lower cable chains manually.
• Lower end to support bar, upper end to C-frame.• Lift upper cable chains over upper TT-rail onto support bars using RB84 crane.• Fix upper end of cable chain to C-frame.
Envelop:300x500x260 mm3.
Weight: 100 kg.
Straps for lifting.