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首页> 外文会议>ASME(American Society of Mechanical Engineers) Pressure Vessels and Piping Conference 2006 vol.7: Operations, Applications, and Components >EXTENDING PRESSURE RELIEF VALVE INSPECTION INTERVALS BY USING STATISTICAL ANALYSIS OF PROOF TEST DATA
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EXTENDING PRESSURE RELIEF VALVE INSPECTION INTERVALS BY USING STATISTICAL ANALYSIS OF PROOF TEST DATA

机译：通过使用证明测试数据的统计分析来扩展泄压阀检查间隔

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摘要

This paper correlates as-received relief valve test results with current inspection intervals and presents conclusions based on statistical analysis. During the past three year period over 500 used valve proof test records from a site population of 3500 safety relief valves were acquired and reviewed. Collection and analysis of spring-loaded relief valve test data continues with the goal being to increase the test intervals within guidelines, reduce costs, and maintain safety margins. Based on current test intervals of 1-7 years, time in service appears to have a minimal effect on valve performance. Seat material and inlet size are identified as having a statistically significant impact on valve performance. An increase in TP/SP of 1-2% per year was noted for soft seated, small inlet sizes. Photographs of failed valve internals and discussion of failure causes are included.
机译：本文将收到的安全阀测试结果与当前的检查间隔进行关联，并基于统计分析得出结论。在过去三年中，从3500个安全释放阀的现场人口中获得并审查了500多个使用过的阀门验证测试记录。继续对弹簧式安全阀测试数据进行收集和分析，目标是在准则范围内增加测试间隔，降低成本并保持安全裕度。根据目前的1-7年的测试间隔，使用时间似乎对阀门性能的影响最小。阀座材料和入口尺寸被确定为对阀门性能具有统计学上的显着影响。对于软阀座，小尺寸进样口，TP / SP每年增加1-2％。包括阀门内部故障的照片和故障原因的讨论。

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