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LHC cold boxes

LHC cold boxes. Installation and status Technical Support 2005 workshop. Cold boxes to be transported. 5 QUI – Cryogenic distribution feed boxes 8 QURC – Cryogenic refrigerators. QUI – what is that?. QURC – what is that?. Try to concentrate on the most difficult….

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LHC cold boxes

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  1. LHC cold boxes Installation and status Technical Support 2005 workshop Caterina Bertone TS-IC

  2. Cold boxes to be transported • 5 QUI – Cryogenic distribution feed boxes • 8 QURC – Cryogenic refrigerators Caterina Bertone TS-IC

  3. QUI – what is that? Caterina Bertone TS-IC

  4. QURC – what is that? Caterina Bertone TS-IC

  5. Try to concentrate on the most difficult… • A level of difficulty has been determined (1/3) to focus on most difficult cases • Level 3: QURC US85, US25, PM18 • The actual status: 12/13 cold boxes are installed, PM18 QURC in June 2005 Caterina Bertone TS-IC

  6. QURC UX85 – a challenge to prepare another • Installation in US85 passing by UX85 throughout tampon wall: Demolition of the wall • Deviation of general services and gas system • Installation of 20m long Z rail on the vault (to avoid interference with crane) • Preparation of US85 floor to roll electrical switchboards and installation of manifold • Use of hydraulic extra short jacks • Very spectacular flight and installation Caterina Bertone TS-IC

  7. Some pictures to explain Caterina Bertone TS-IC

  8. QURC US25 – what is that? Caterina Bertone TS-IC

  9. QURC US25 – no space, no means -> 3D simulation • Definition of maximum overall dimensions of AL components • Installation of 15t hoist and rail on the US25 vault • Definition of transport means Caterina Bertone TS-IC

  10. Manifolds • Length of manifolds > length of underground shaft – > in 4 parts • Temporary garage behind final position to allow welding : installation on shelf and remove stairs Caterina Bertone TS-IC

  11. QURC horizontal part • QURC higher than metallic structure (dismounted) • Maneuver with no room - > special roller seat + reduced high spreader • QURC width 1900mm, shaft dimension 1950mm -> nylon pads to allow lowering • Position of centre of gravity not correct to lift in US25 and rotate to final position -> addiction of counterweight in feet to compensate Caterina Bertone TS-IC

  12. QURC horizontal show • 1-2cm room in all phases of operation Caterina Bertone TS-IC

  13. QURC Vertical part • QURC longer than shaft -> need to be tilted with hoist chain system, special spreader • QURC width 1900mm, shaft width 1950mm • In underground extra-short rollers (110mm) to pass under the metallic structure • Rotating ring to be welded in the lower part to permit passage from horizontal to vertical in the US25: behind a rotating/rolling cradle, in front hydraulic shortenable spreader on the hook seat to lift • Counterweight on the back to correct center of gravity position • Insertion of K supports under QURC feet when suspended Caterina Bertone TS-IC

  14. Vertical part show Caterina Bertone TS-IC

  15. QURC vertical – show (2) Caterina Bertone TS-IC

  16. Conclusion • 12/13 cold boxes are in places. Installation has been successful • Detailed handling studies (3D, tools definition and construction) have been required • Coordination with different technical sectors (CE for rail and walls, EL for cabling modifications, CV for pipes de-routing, ….) was good • Safety aspects have been studied in detail with all safety procedures respected • Overall cost of installation has been ~350kCHF, i.e. 1% of the 12 cold boxes value • Last challenge QURC in PM18 soon!!! Caterina Bertone TS-IC

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