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NEW n-TOF HOIST

NEW n-TOF HOIST. N-TOF External Panel Review CERN, 15.06.2007 Ingo Rühl / TS-IC-HM. Prehistory 1/2. Existing installation HHLPA-0871, DONATI, 1987 (LEP), 6.5t (5t)

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NEW n-TOF HOIST

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  1. NEW n-TOF HOIST N-TOF External Panel Review CERN, 15.06.2007 Ingo Rühl / TS-IC-HM

  2. Prehistory 1/2 • Existing installation • HHLPA-0871, DONATI, 1987 (LEP), 6.5t (5t) The existing installation does not converge with the standard practice and norms (KTA 3902[1], EN 60204– 1, EN 60204– 32) for the handling of radioactive material for which security and operation measures must be taken to eliminate or diminish the risk [1] The KTA 3902 ‘Design of Lifting Equipment in Nuclear Power Plants’ (http://www.kta-gs.de/e/standards/3900/3902-e.pdf) is the most comprehensive document in this respect.

  3. Prehistory 2/2 • 2000 - Design study (COMETE - 5’000 €) • Environmental/space constraints • Redundant lifting cinematic (2 electrical motors, electrical cubicle and control debarked etc.) • No changes on the lateral movement system • 2001 – Price offer (COMETE – 110’000 €) • 6 months delay between placing the order and commissioning • 2006 – Revision price offer (COMETE – 200’000 €) • 6 months delay between placing the order and commissioning

  4. Present situation • Lifting of n-TOF target feasible (not glued or deformed, test done 21.05.2007, radiation level lower than expected). • No more objections by the TS department to proceed with the proposed maneuver to displace the target into the safer intermediate storage shaft (next to the main shaft). • Coordination meeting proposed as soon as possible.

  5. Future aspects • Provided that the new n-TOF experiment is approved TS-IC proposes to launch a price enquiry for a new hoist that takes in consideration the requirements of the new n-TOF target (weight, expected radiation levels etc.) • Delay about 10-12 months between the approval of the Divisional Request and the commissioning

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