ADO-PO Section Meeting Safety Group LS1 Shutdown Safety Organization. 07.12.12. Safety shifters: Safety shifters will monitor the work execution and periodically patrol the UX15, US15, SR1 (including radioactive lab) and SX1 (including RBZ).
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ADO-PO Section Meeting
LS1 Shutdown Safety Organization
Safety shifters will monitor the work execution and periodically patrol the UX15, US15, SR1 (including radioactive lab) and SX1 (including RBZ).
Their duty is to make sure all workers in the ATLAS premises are respecting the safety rules and are behaving as such.
They have the authority to stop activities if judged dangerous and to expulse from the caverns people who are not respecting the safety rules in an important way
They report in first place to the EOD and have the authority to stop an activity or even expulse a person from the caverns if a major safety violation is done.
GLIMOS and in case TC will arbitrate any dispute.
The safety shifters report to the GLIMOS in general.
A Safety Shifter training will be organized in Jan/Feb.
Radiation protection – ALARA
Doses calculations and budgets have been performed for LS1 activities.
ALARA optimization process is under progress with :
- procedures optimizations
- change of tools
- procurement of shieldings
New FLUKA doses calculations are being currently performed under Giuseppe coordination. The doses budgets will be updated accordingly.
The radiation protection safety measures are being discussed with the CERN RP group.
SR1 Radioactive Lab:
Permanent work place:
8 hours/day (2000 hours / year)
Low occupancy area:
< 1.6 hours/day
ATLAS workers are in category B (CERN rule Do not exceed 6 mSv/ year)
ATLAS dose goal Do not exceed 2 mSv/ year
No exposure more than 50 μSv / day
Restrict activities for a few hours (max 20 hours per year) in regions between
20 and 50 μSv/hour and under strict supervision
Make use of individual shielding if possible to gain a factor 2 (2 cm Fe
equivalent gains a factor 2)
Robotize interventions in regions > 50 μSv / hour
The ATLAS RPE or RP technician assisted by the Safety Shifters will implement the required safety measures (fencing, information panels, radioactive waste bins, etc…).
The area will be then open to activities.
The dose rates measured, the results of the contamination tests and the specific safety measures will be communicated to the personnel working in the area by the RSO / GLIMOS.
These data will be available at SLIMOS desk and on the ATLAS safety web page (restricted to the ATLAS collaboration).
A DIMR (Dossier Intervention en Milieu Radioactif) will be requested to all personnel working in the radiation controlled areas.
The DIMR is filled by the ALARA team and is linked to the PPSPS and the IMPACT request.
The dose collected during the activity should be recorded and communicated by the responsible of the activity for all his personnel to the ATLAS ALARA team every day.
We will do the Retour d’ experience for the DIMR.