关键词: 原油管道, 停输再启动, 安全评价, 极限状态方程, 安全评价基准

Abstract: he characteristics of restart pressure used in the crude oil pipeline shutdown and restart safety assessment were analyzed. It is pointed out that the maximum allowable incident pressure（MAIP）, but not the maximum allowable operation pressure（MAOP）, was more suitable for the safety assessment benchmarks of pipeline shutdown and restart. Referencing the MAIP and basing on the pressure parameters provided in Chinese standards, 1.1 times pipeline internal design pressure, 1.1 times pipe remaining strength and 1.1MAOP were respectively recommended as the safety assessment benchmarks for pipelines with no defects, detected defects and undetected defects. The results obtained in a case of a pipeline with undetected defects show that 1.1MAOP is more reasonable than MAOP as the safety assessment benchmarks of shutdown and restart for crude oil pipeline.

Key words: Crude oil pipeline   ,    , Shutdown and restart   ,    , Safety assessment    ,   ,  Limit-state equation  , Safety assessment benchmark