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Dismantling of shielding wall in PSB injection zone

Dismantling of shielding wall in PSB injection zone. Preliminary concerns. To be accessed from PSB or from PS. Quantities and weight. 300 concrete blocks with max weight of 1250kg 30 steel beams (1,6mx200x200), with max weith 500kg 635 concrete bricks of 18 kg each

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Dismantling of shielding wall in PSB injection zone

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  1. Dismantling of shieldingwall in PSB injection zone Preliminaryconcerns Caterina Bertone - 2/10/2012

  2. To beaccessedfrom PSB or from PS Caterina Bertone - 2/10/2012

  3. Quantities and weight • 300 concrete blocks with max weight of 1250kg • 30 steelbeams (1,6mx200x200), with max weith 500kg • 635 concrete bricks of 18 kg each • Hundreds of steel bricks to close the open whole Caterina Bertone - 2/10/2012

  4. Pure dismantling • Mounting technique and tools no longer authorised: needs for studies and tooling: 50kCHF • Consider 1 month for wallremoval + time needed to mount and dismountlines to arrive to the wall: ~50kCHF for manpower Caterina Bertone - 2/10/2012

  5. From PS All yousee in the phots needs to beremoved Caterina Bertone - 2/10/2012

  6. From PS Way to go: all to bedismantled Caterina Bertone - 2/10/2012

  7. From PS: machines in and blocks out Caterina Bertone - 2/10/2012

  8. Summary of evacuation by thisway • Dismantling of the whole zone + up to PS machine • Dismantling of 1-2 PS unit to passinto the inside of the ring and a part of LBS line • Reinforcement of slabunder the PS units and along the path (to bechecked) to passwithheavymachines+blocks • Full reinforcement of the slabfromevacuationdoor and innerside of PS ring atthis position • Unknowns about ground situation • Extra long patch and need for handling means (loco + trailer+forkliftsetc) Caterina Bertone - 2/10/2012

  9. From PSB All yousee in the phots needs to beremoved Caterina Bertone - 2/10/2012

  10. From PSB open space Slab to bereinforced Caterina Bertone - 2/10/2012

  11. Fromshielding to tremie Cable trays + line to Be removed Evacuation lane Caterina Bertone - 2/10/2012

  12. And away… Caterina Bertone - 2/10/2012

  13. Summary of evacuation by thisway • Dismantling of the whole line up to PBS machine • Reinforcement of slabunderalong the path (10 m?) to passwithheavymachines+blocks • Short patch and limitedneed for handling means • More activated zone? Caterina Bertone - 2/10/2012

  14. Open questions and short conclusions • Activation of blocks? • Permanence of operators in ‘hot zones’ like PSB injection region? • Reinstallation of the wallafter CE? • Sol 1 prevent future exchange of magnets in the zone (no more transport zone), Sol 2 and seemdifficult to realise to lift the dump up and keep in place. Sol 4 needs installation of a crane in the vault up to the zone to allow future handling of the 2 lines (fromwhere do we insert the dump?) • Evacuation from PSB sideisclearly the preferredchoise • It is possible and we are waiting more infos fromyourside Caterina Bertone - 2/10/2012

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