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Conference papers

Allocation de SIL requis sur un réseau de refroidissement à l'ammoniac conformément à la norme CEI 61511

Abstract : The IEC 61511 standard addresses to safety in the application of safety instrumented systems for the Process Industries. The standard requires to carry out process hazard and risk assessment in order to deduce specifications for the SIS. Two main concepts, fundamental to its application, are underlined : safety lifecycle and safety integrity levels. This article deals more with the safety integrity levels (SIL) and to their allocation depending on the SIS considered. This international standard. describes various quantitative and qualitative methodology for SIL (Safety Integrity Level) allocation. The choice for one or another methodology will depend on various criteria as illustrated in this paper. The paper make a brief description of three spreaded methods in the Process Industries. The selection criteria for each method are presented. Advantages and disadvantages of these various methods are indicated. In order to illustrate the methodology of a SIL allocation, a case study on a storage unit of ammonia is presented
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Submitted on : Wednesday, April 9, 2014 - 4:42:33 PM
Last modification on : Friday, October 23, 2020 - 5:00:03 PM
Long-term archiving on: : Wednesday, July 9, 2014 - 1:50:48 PM


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  • HAL Id : ineris-00976203, version 1



Brice Lanternier, Ahmed Adjadj. Allocation de SIL requis sur un réseau de refroidissement à l'ammoniac conformément à la norme CEI 61511. 1. Congrès International sur l'ingénierie des risques industriels (CIRI 2007), Dec 2007, Montréal, Canada. pp.286-296. ⟨ineris-00976203⟩



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