This paper briefly describes the SY type safety valve application in petrochemical industry, as well as the role of the relief valve in the production unit is responsible for. Relief valve set point of the set is a dangerous and necessary work very much, because the work of specific data, will reflect to the relief valve in the device usage, directly determines the safety valve will be able to have the corresponding security protection. The thesis gives a set of production site pressure setting debugging methods, combined with field using the process of maintenance and repair work experience, summed up the various common faults and fault processing methods, some and illustrates the maintenance process should pay attention to the aspects.%本文简要叙述了SY型安全阀在石油化工行业中的一些应用，以及安全阀在生产装置中所担负的作用。安全阀设定值的现场设定是一项危险且非常必要的工作，因为这一工作得出的具体数据，将体现到其在装置中的使用情况，且直接决定了其是否能够起到相应的安全保护作用。本文详细给出了生产现场压力设定值的设定调试的具体方法，结合现场使用过程中运行维护和检修的工作经验，总结了各种常见故障及其针对一些故障的处理方法，并说明了检修过程中应该注意的方面。
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