It is shown that medium causticity,adhesiveness,temperature and pressure are factors of safety valve lapse and safety valve inspection time based on the analysis the reasons of safety valve lapse.

• 通过对安全阀失效原因的分析,得出介质腐蚀性、粘度、温度压力是使安全阀失效的因素,同时也是影响安全阀校验周期的因素。