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Hi gh Rad iation to Mat erials 13 th Project Team Meeting – May 20, 2010

News ALARA Committee Status reports : IEFC ( tbc ), MSWG (July 2 nd ) Irradiation Area. Hi gh Rad iation to Mat erials 13 th Project Team Meeting – May 20, 2010. Project Team Meeting CERN, May 20, 2010. I. Efthymiopoulos – EN/MEF. EDMS No:. Post-Chamonix 2010 schedule. Master schedule.

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Hi gh Rad iation to Mat erials 13 th Project Team Meeting – May 20, 2010

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  1. News • ALARA Committee • Status reports : IEFC (tbc), MSWG (July 2nd) • Irradiation Area High Radiationto Materials 13thProject Team Meeting – May 20, 2010 Project Team Meeting CERN, May 20, 2010 I. Efthymiopoulos – EN/MEF EDMS No:

  2. Post-Chamonix 2010 schedule Master schedule I. Efthymiopoulos, EN/MEF

  3. ALARA Committee I. Efthymiopoulos, EN/MEF Well prepared presentations – THANKS to all participants! Positive experience and feedback with some remarks

  4. ALARA Committee Highlights - Feedback I. Efthymiopoulos, EN/MEF 4) Conclusion • The committee concluded that sufficient effort has been undertaken to minimize the collective and individual dose to personnel and approves the proposed WANF and T1 target dismantling. The committee also recommends: • the use of a mock up to make the interventions less time consuming • Practice and optimize the T1, T9 & MTR dismantling. • Tests of the MTR transport with the two Jacobi machines beforehand • the use of a alternative way to paint the areas which is less time consuming • Optimize paining time – alternative methods (spray?) • to avoid the use of TL tubes which have a low tolerance for radiation damage • The lighting in the irradiation area (TNC) must be carefuly studied and optimized • …along with other studies as for the materials, cabling, etc. • There will be a follow up meeting in September 2010.

  5. 5 Radiological survey WANF Tunnel (TNC)April 2010 The actual classification remains the same: « Controlled Radiation Area - High Radiation »

  6. 6 Dosimetry for work already done (3) (1) (3) (3)

  7. 7 Dose budget: summary • First guess: 15 mSv for 3 TS, still 6 TS to come  additional 30 mSv to complete dismantling • Based on experience gained from the past (old WANF, old T1,…) and recent dismantling activities • Preliminary dose budget estimate (optimization still in progress regarding handling means, work procedure) • Rather conservative (safety factor already included) estimate First value based on the last WANF dismantling in 1993: 210mSv

  8. Irradiation Area Open design issues • Start dedicated meetings to address the open issues in the Irradiation Area design • Next meeting tomorrow morning - reduced participation based on the subject • Areas to address (not exhaustive!): • Infrastructure: ventilation system & doors, dump, cables, lighting, crane, cooling & gas(?) • Experiment: installation [support stand, containment, windows], proximity electronics, control room, assembly lab, active and passive monitoring [cameras, temperature, vibrometers] • Radiation: monitoring, cool-down regions, post-irradiation transport, • Prepare in parallel the safety file and specifications for each item • Report and approval in the project team meetings

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