Outline Safety file Descriptive part Hazard inventory Demonstrative part Operational part Feedbacks Other recommendations from safety review. HiRadMat hearing session: safety file. HiRadMat Hearing session CERN, July 2 7 , 2011. S. Evrard – EN/MEF. EDMS No: 1155047 .
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CERN, July 27, 2011
S. Evrard – EN/MEF
EDMS No: 1155047
Stray radiation (external exposure)
Airborne contamination decrease
This part of the HiRadMat Safety File is an inventory of all feedbacks, mishap reports as well as experience gained reports which are very important to take into account in order to optimize the exploitation of the HiRadMat facility especially in terms of safety.
Risk and incidents withfire
Two escape ways are considered depending on where the event causing the evacuation is triggered. The recommended way is passing through TJ7, then TA7, PA7 and return to the surface via the BA7 access point via the staircases. If someone is blocked in TNC and cannot escape using this recommended way, an alternative way is in place via the B.846 shaft.
Escape ways to bedefined
2 visits on-site with FB
FB safety assessment
Modifications in progress (deadline = september)
B.846 shaftsafetyassessment as escape way
Top escape pit
-The yellow balk under the plafond can be used as anker point, if it can bear a load of 35 kN. (if this is not the case, 2 points should be constructed as the point halfway the pit.
-Red telephone with direct contact to fire brigade (in function)
-Door to exit, which can’t be locked by keys
Halfway ladder escape pit
-Anker points (2 points, one of 35 kN above the shaft and one of 10 kN above the ladder)
- Possibility to remove fence
- Possibility to close the hole to stairs
End of HIRADMAT experiment
- AUG (clear visible next to the escape door)
- Red telephone (clear visible next to the escape door)
Bottom escape pit
-Red telephone at the bottom of the pit (separated from HIRADMAT experiment), with direct contact to fire brigade
- Entrance door, which can be opened in emergency without key.
- (to discuss) Sign that explains that before the use of this shaft the FB must be informed and contact with FB is mandatory once the top has been reached. If desired FB can secure ascension.
SPS sector 6&7
Seal on PPG710
B.846 shaft patrolled only if seal broken or patrol box dropped
Abnormal conditions and accident scenarios