Low demand safety instrumented systems are widely used to help prevent and mitigate major accidents in the oil & gas (O&G) industry. The paper studies a special type of failures of such systems called dangerous detected (DD) failures that are often underestimated with respect to failure effects. The study aims to address the necessity of classifying and including various DD failures in risk and reliability analyses of low demand systems, and to suggest some ways to implement normative evaluations of DD failures to improve current work practices in the O&G industry. It is argued that there is a considerable potential to make the decision and works practices related to low demand safety instrumented systems more efficient and cost-effective without compromising safety risk.
展开▼
