HIGH RADIATION TO MATERIALS WG3 – EXPERIMENTAL AREA
HiRadMat project Team Meeting03/0/2011
T9 transformation Repeatability test of experimental area tables
(EDMS 1119840, Michael Lazzaroni)
Ans Pardons– EN/MEF
Weekly WG3 meetings material: http://indico.cern.ch/categoryDisplay.py?categId=2616
HiRadMat2
January 2011: TBID dismounted Dose rate inside collimator volume
(1mx1mx1.2m) was measured (N. Conan):
The 4 copper blocks: Each bloc has “hottest surface” on the outside Axis of bloc 2&3 is outside range of overhead crane No remote handling foreseen (in 1993)
Transformation of T9
Ans Pardons EN/MEF
Débit de dose télétector 12.01.11
40cm à l’extérieur des blocs : 20mSv/h5 cm à l’extérieur des blocs : 60mSv/h
10-15 cm dans les blocs Cu: 430mSv/hMax obtenu (distance non estimée) : 1 Sv/h
HiRadMat3
Axis of bloc 2&3 is outside range of overhead crane Take 1&2 / 3&4 together Use custom-made lifting beam
No remote handling foreseen Use existing threaded holes (4 per block) Handling plates must be installed on copper blocks
Hottest surface on the outside Handling plates + extra shielding protect
personnel when fixing plates Blocs will be placed inside container
in sarcophagus downstream TNC (40cm iron)
Transformation of T9: downstream collimator
Ans Pardons EN/MEF
HiRadMat4
Extensive tests on mock-up (S. Evrard)(carried out 02/02/2011, extensive report on EDMS1119840)
Transformation of T9: downstream collimator
Ans Pardons EN/MEF
HiRadMat5
Presentation in ALARA L3 committee of 17/1/2011 Followed-up by “review” in the following week (M. Tavlet,
P. Bonnal) Extensive documentation (procedure, DIMR, risk
analysis, ...) in EDMS for approval per phasePhases:
0- Preparation area & tests 1-Dismount and transport upsteram collimator & target 2- move two upper copper blocs to downstream TNC 3-move two lower copper blocs to downstream TNC and place all
4 blocks in containers inside sarcophagus 4-5-6-7: Prepare area for receiving TED, install TED, close shielding
Transformation of T9: ALARA approval
Ans Pardons EN/MEF
HiRadMat6
Green light for phase 1 received 1/2/2011 roof block, target and collimator removed on 2/2/2011
Transformation of T9
Ans Pardons EN/MEF
HiRadMat7
Green light for phase 2 received 3/2/2011? two upper copper blocks planned to be removed 3/2-5/2 (~18h of work)(situation on 5/2: shielding in place downstream from lower copper blocks)
Green light for phase 3? two lower copper blocks removal & storage in closed sarcophagus (~20h of work)
Then: phase 4 (~8h) – with last transport TNC TT61
Transformation of T9
Ans Pardons EN/MEF
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