储罐检测及风险评估.ppt

5 储罐风险评估技术 5.3 制定储罐检验策略 – 检验周期的选取 （1）根据风险分析结果，对壁板风险等级为中高及以上的储罐，建议一年内进行全面检验，并且检验策略中应包括专门针对壁板强度和稳定性评估的内容； （2）根据风险分析结果，对底板风险等级为中高及以上，壁板风险等级可接受（中风险及以下）的储罐，建议三年内进行全面检验； （3）根据风险分析结果，对底板和壁板风险等级均可接受（中风险及以下），但底板失效可能性等级较高（3级及以上）的储罐，建议6年内进行全面检验，如果期间进行了以宏观检查、壁厚测定和声发射为主的在线检验，可根据检验结果再适当调整全面检验时间； （4）根据风险分析结果，对底板和壁板风险等级均可接受（中风险及以下），且底板失效可能性等级较低（3级以下）的储罐，建议9年内进行全面检验，如果期间进行了以宏观检查、壁厚测定和声发射为主的在线检验，可根据检验结果再适当调整全面检验时间。 5 储罐风险评估技术 5.3 制定储罐检验策略 – 检验周期的选取 （1）根据风险分析结果，对壁板风险等级为中高及以上的储罐，建议一年内进行全面检验，并且检验策略中应包括专门针对壁板强度和稳定性评估的内容； （2）根据风险分析结果，对底板风险等级为中高及以上，壁板风险等级可接受（中风险及以下）的储罐，建议三年内进行全面检验； （3）根据风险分析结果，对底板和壁板风险等级均可接受（中风险及以下），但底板失效可能性等级较高（3级及以上）的储罐，建议6年内进行全面检验，如果期间进行了以宏观检查、壁厚测定和声发射为主的在线检验，可根据检验结果再适当调整全面检验时间； （4）根据风险分析结果，对底板和壁板风险等级均可接受（中风险及以下），且底板失效可能性等级较低（3级以下）的储罐，建议9年内进行全面检验，如果期间进行了以宏观检查、壁厚测定和声发射为主的在线检验，可根据检验结果再适当调整全面检验时间。 5 储罐风险评估技术 5.4 某石化企业罐区储罐RBI分析示例 谢谢！ 祝大家工作愉快！ * * * * Physical Acoustics has provided “on-line” monitoring services for spheres, bullets etc for 20+ years, in the 80’s a number of companies were promoting AE (acoustic emission) for tank floor leak detection (HSB, TUV etc). In 1989 UK customers were asking what could be done with tank floors, prior to them leaking. We knew from work carried out in the early 80’s that rusting of steel produces substantial acoustic emission, but was it detectable on a tank floor from the outside? Transmission through the floor plate was out of the question, so it had to be via the liquid. At the time people were trying to detect leaks using acoustic systems, so the obvious answer was to try it. A small number of tanks (~50) owned by various customers were monitored and inspected afterwards during the first 2 years and a “user group” was formed to share information. The basic procedure for testing and evaluation was established, and has slowly been refined over the years as a wider range of tank types has been tested, and more experience and feedback has been gained. New users always evaluate the TANKPAC? system by testing