Author: Faye, M.
Paper Title Page
THPHA107 Safety Control of the Spiral2 Radioactive Gas Storage System 1629
 
  • Q. Tura, C. Berthe, O. Danna, M. Faye, A. Savalle, J. Suadeau
    GANIL, Caen, France
  
  The phase 1 of the SPI­RAL2 fa­cil­ity, ex­ten­sion pro­ject of the GANIL lab­o­ra­tory, is under con­struc­tion and the com­mis­sion­ing had started. Dur­ing the run phases, ra­dioac­tive gas, mainly com­posed of hy­dro­gen, will be ex­tracted from the vac­uum cham­bers. The ra­dioac­tive gas stor­age sys­tem func­tion is to pre­vent any un­con­trolled re­lease of ac­ti­vated gas by stor­ing it in gas tank dur­ing the ra­dioac­tive decay, while mon­i­tor­ing the hy­dro­gen rate in the tanks under a thresh­old. This con­fine­ment of ra­dioac­tive ma­te­ri­als is a safety func­tion. The fill­ing and the dis­charge of the tanks are processed with mono­stable valves, mak­ing the stor­age a pas­sive safety sys­tem. Two sep­a­rate re­dun­dant con­trol sub­sys­tems, based on elec­tri­cal hard­ware tech­nolo­gies, allow the open­ing of the re­dun­dant safety valves, ac­cord­ing to re­dun­dant pres­sure cap­tors, re­dun­dant di-hy­dro­gen rate an­a­lyz­ers and limit switches of the valves. The re­dun­dancy of the de­sign of the con­trol sys­tem meets the sin­gle fail­ure cri­te­rion. The mon­i­tor­ing of the con­sis­tency of the two re­dun­dant safety sub­sys­tems, and the non-safety con­trol func­tions of the stor­age process, are then man­aged by a Pro­gram­ma­ble Logic Con­troller.  
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THPHA107  
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