kickback 是什么(关于HAZOP)? Deviation Possible Causes Consequences Action Required NO FLOW (1) JI pump fails (motor fault, loss of drive, impeller corroded away, etc) Loss of feed to reaction section and reduced output. Polymer formed in heat exchanger under no flow conditions. (2) Line blockage, isolation valve closed in error, or LCV falls shut As for (1) JI pump overheats Install kickback on JI pumps, MORE PRESSURE (6) Isolation valve closed in error or LCV closes, with JI pump running Transfer line subjected to full pump delivery or surge pressure. (j) Covered by (c) except when kickback blocked or isolated . Check line, FQ and flange ratings, and reduce stroking speed of LCV if necessary. Install a PG upstream of LCV and an independent PG on settling tank. [ ]查看更多15个回答 . 2人已关注