Study on Risk Assessment Technology of Natural Gas Purification Plant Based on HAZOP/LOPA/SIL Analysis
In order to analyze the functional integrity and reliability of safety instrumented system of natural gas purification plant,HAZOP,LOPA and SIL verification are carried out comprehensively on the basis of statistical reasons for parking at typical stations.SIF identification and SIL grading are carried out by HAZOP/LOPA analysis,and SIL verification is completed by SIL analysis.The results show,in the stable operation stage,the causes of equipment failure and interlock parking are as high as 66.7％,indicating that there are many risks in the process of long-term operation of the device.The SIL grading of the liquid level interlock loop of the desulfurization regenerator in the station is consistent with the verification results,indicating that the new SIF loop can meet the risk reduction requirements.It is recommended to select equipment components with functional safety certification to ensure the station process is in a reliable state.
hazard and operability studylayer of protection analysissafety integrity levelrisk assessmentsafety instrumentation system
NETL
NSTL
万方数据
