Safety Control of the Spiral2 Radioactive Gas Storage System

Abstract : 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 thenmanaged by a Programmable Logic Controller.
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http://hal.in2p3.fr/in2p3-01613286
Contributor : Michel Lion <>
Submitted on : Monday, October 9, 2017 - 2:27:33 PM
Last modification on : Monday, May 14, 2018 - 8:57:35 AM

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Q. Tura, C. Berthe, M. Faye, A. Savalle, J. Suadeau. Safety Control of the Spiral2 Radioactive Gas Storage System. 16th International Conference on Accelerator and Large Experimental Physics Control Systems (ICALEPCS2017), Oct 2017, Barcelona, Spain. ⟨10.18429/JACoW-ICALEPCS2017-THPHA107⟩. ⟨in2p3-01613286⟩

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