The method to determine the minimum upset temperature by means of the damage factor of temper embrittlement was introduced, and the dependable basis for equipment safe operation was offered.

用基于风险检验评估方法分析了石化装置中运行的高温设备发生脆性断裂失效的可能性，介绍了利用回火脆化损伤因子确定最低升压温度的计算方法，为装置安全生产提供了可靠依据。

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This article USES the microscopic analysis method, Carries on the thorough discussion to a boiler drum break of accident cause factor, Seeks its origin, Proposes solution, For boiler safe operation?

本文采用微观分析方法对一起锅炉鼓包事故原因进行深入的探讨。

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