SPS Dump relocationRadioactive Dump storage alternativesJL GRENARD EN-HE19-11-2015

Doses taken during the TIDVG replacement 08-2014 by transport team

Removal and reinstallation of the DUMP at BA1

 

11-08-2014 removal of the dump from the beam line + transfer to the bottom of BA3

12-08-2014 transfert of the dump with the mobile crane on surface to a truck -> 954 storage- > reinstallation of ''new'' dump on LSS1+

Surface Truck driver   13Surface Crane driver   5Handler   88Handler 30.00 30Handler 22.00 38Handler 10.00 130Maintenance technician good lift   1Handler 7.00 24Handler 66.00 23  135 352 487µSv

Transport in the tunnel 35µSvCranage and transport on surface 252µSvTotal linked to ''transport'' activities 287µSvTotal x2x3 1722µSv

Expected collective dose for transport team without optimization in case of a direct removal of the dump from ECX5 -> radioactive storage

Transfer from the tunnel to the surfaceCurrent situation

Many steps still need a human intervention close to the dump2 majors reasons:- The current design is not optimized in term

of handling- The current handling equipement not

optimized (several change of equipement during the complete process)

What could be improved

• No change of trailer between the tunnel and the surface -> dedicated trailer with shielding compatible with roads (cost ~25KCHF)

• Use of a shielded tractor (several already exist at CERN for the tunnel) but would be good to have one dedicated for all the onsite surface transport (cost ~75KCHF)

-> estimated gain in term of collective dose ~500µSv