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