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


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.


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.


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.


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.


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.


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)


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.


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.

ea meeting, wednesday 6 dec 2006 tt installation, jeroen van tilburg 1 tt installation installation...

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