The Use of Risk Matrices and Risk Graphs for SIL Determination

被引:13
作者
Baybutt, Paul [1 ]
机构
[1] Primatech Inc, Columbus, OH 43235 USA
关键词
SIL determination; risk matrix; risk graph; risk tolerance criteria; IEC; 61511; ISA; 84; SAFETY INTEGRITY LEVELS; TOLERANCE CRITERIA;
D O I
10.1002/prs.11627
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Risk matrices and risk graphs are used to determine safety integrity levels for safety instrumented functions. Their simplicity makes them appealing but various difficulties militate against their use for this purpose. These difficulties include the accommodation of hazardous events, allocation of risk tolerance criteria for calibration, and consideration of overall facility risk. Layers of protection analysis and other more quantitative methods are better able to handle these issues. (c) 2013 American Institute of Chemical Engineers Process Saf Prog 33: 179-182, 2014
引用
收藏
页码:179 / 182
页数:4
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