• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Reliability Engineering & System Safety >Reliability of safety-instrumented systems subject to partial testing and common-cause failures
【24h】

Reliability of safety-instrumented systems subject to partial testing and common-cause failures

机译：受安全保护的系统经受部分测试和常见原因故障的可靠性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Partial testing is sometimes used as a supplement to proof testing to improve the reliability of safety-instrumented systems (SISs) in low-demand mode of operation. This paper studies the effect of partial testing on SIS reliability. Simplified formulas are developed to include both partial and proof testing in the calculation of the average probability of failure on demand (PFD_(avg)). The proposed formulas can handle situations where partial testing is performed periodically and non-periodically. Common-cause failures (CCFs) are treated by using the beta-factor model, and different β-factors can be included for different failure modes. The proposed formulas are compared with existing results for partial verification. A case study is presented to demonstrate the applicability. The proposed formulas can serve as a valuable tool for selecting a cost-effective strategy for partial testing.
机译：有时会使用部分测试作为对证明测试的补充，以提高低要求操作模式下的安全仪表系统（SIS）的可靠性。本文研究了部分测试对SIS可靠性的影响。开发了简化的公式以在按需失效的平均概率（PFD_（avg））的计算中包括部分测试和证明测试。所提出的公式可以处理定期和非定期执行部分测试的情况。常见原因故障（CCF）通过使用β因子模型进行处理，并且对于不同的故障模式可以包含不同的β因子。将拟议的公式与现有结果进行比较，以进行部分验证。案例研究表明了其适用性。提议的公式可以作为选择部分测试的高性价比策略的宝贵工具。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号