What safety matters should be paid attention to when checking pressure pipelines?

For the pipeline with pressure, the easiest problem in the production process is the leakage at the connection flange. Once leakage is found, do not tighten it under pressureBolt. There are some reasons for the leakage in the process of operation, such as gasket damage, pipeline under thermal stress, etc. At this time, just rely on twistingBoltIf the problem can not be solved, often screw the Bolt hard because the leakage has not been eliminated until the bolt is broken, and the high pressure gas in the pipe sprays out, causing injury accidents. There have been several factories that have broken bolts due to the screw bolts with pressure,FlangeLesson from the casualty accident of disc flying.
Therefore, it must be strictly abided by the forbidding of twisting with pressureBoltRules, do not hold fluke mentality in order to seize the time, hurry up with the task, violate the operating rules.