Safety Clearance Procedure for NA62: Overview and Recommendations
The conventional safety clearance procedure for NA62 involves checks by DGS-SEE (HSE) and obtaining radiological safety clearance from the DGS/RP group. Various safety checks are outlined in memorandums by Mark Hatch and Jonathan Gulley. Safety files for NA62 are noted to be in poor states, lacking crucial mechanical drawings and documentation for various components. Complimentary tests and specialized safety visits are also part of the safety clearance process. Additionally, specific instructions for electrical safety visits and inspections are provided. Recommendations include updating safety files with missing information and ensuring proper grounding schemes and documentation.
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Safety Clearance of NA62 01/09/14 FV 1
Formal framework Memorandum of Mark Hatch / PH Departmental Safety Officer, 25 August 2014 The conventional safety clearance procedure for NA62 will be doing by DGS-SEE (HSE) Safety clearance for the radiological aspects shall be obtained from the DGS/RP group Memorandum of Jonathan Gulley /DGS-SEE (EDMS 1403899) This memorandum outlines the conventional Safety checks, that shall be carried out in the frame of HSE Safety Clearance granted by the HSE Unit. Compulsory Safety checks might be required in addition to the HSE Safety Clearance. The HSE Safety Clearance will only be granted once all the conventional Safety checks have been successfully performed VF 2 01/09/14
Three main information sources NA62 Safety file Complimentary tests (with subsequent recording in Safety File) Specialized safety visits Final clearance will be obtained after general safety inspection VF 3 01/09/14
NA62 Safety file rather poor state KTAG Mechanical drawing are mainly missing (just 3 files concerning support head) It is important to have a description of grounding scheme inside of Environmental Enclosure CHANTI The file is practically empty (just one document concerning mechanical stability of vessel) GTK It would be nice to have drawings (or reference to drawing repository) of GTK vessels LAV Good file example to follow VF 4 01/09/14
NA62 Safety file Straw tracker The file is practically empty (only 3 documents concerning stacking tool) RICH HV splitter documentation is missing CHOD The file is empty LKr The file is empty MUV Mechanical drawings are missing Cables list is missing IRC/SAC The file is empty VF 5 01/09/14
Complimentary tests Proof test of piping CEDAR piping Participation of the HSE (Pierre-Yves.Buisson@cern.ch) VF 6 01/09/14
Specialized safety visits Electrical safety visit (second or third week of September) - Participation of the HSE Unit (Olivier.Tison@cern.ch). Please: Upload to Safety file your Cable list + description of custom made electrical equipment Ground your detector, equipment and metal structures around Fire inspection of the experimental area (second week of September) - Participation of the HSE (Fabio.Corsanego@cern.ch). Please: Clean area from combustible material General Safety pre-visit (second week of September) - Participation of the PH DSO Office (Mark.Hatch@cern.ch). Please: Clean area from any unused objects VF 7 01/09/14
Clearance safety inspection is expected around 20 September Don t forget to remove from TCC8/ECN3 all your tools, temporarily equipment, personal objects, etc., before the first beam on 6 October VF 8 01/09/14
