管道水压试验过程控制及风险防范

Control and Risk Protection for Procedure of Hydrostatic Test for Pipeline

管道压力试验是在管道安装完毕、冷试前,为检验其强度、密封性而设的一道关键工序,施工单位必须按设计和规范要求,对试验做出具体的试压方案,并按方案要求逐项落实实施情况,包括人、机、料、法、环五大方面准备,试验实施过程和试验后系统恢复,基于压力试验作业的危险性,必须对关键步骤进行风险评估,及早防范可能出现的意外,使整个试验过程有序可控进行,另外,对试验过程的关键状态、参数记录进行了叙述。

Pressure test for piping is the key process to exam the strength and sealing ability of piping after its installation and before cool test. The concrete pressure test scheme which is complied with the requirements of design and codes is needed. Moreover, the scheme must be executed from each procedure, including the preparation of five aspects - human, machine, material, law and environment, the performance of test and system recovery after test. In view of the dangers which may be involved in pressure test, the risk based assessment should be carried out for pressure test so as to avoid possible appearance of accidents and to make the test controlled. In this article, the key statuses and parameter records of pressure test were described.