| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of evaluating integrity in a boiler pipe and accessory pipe capable of objectively evaluating the integrity without depending on the level difference between persons in charge. SOLUTION: In the method, when a measured thickness value T2 is smaller than a required minimum thickness value T1, a first required minimum thickness value T3 is calculated at the maximum available pressure and at a normal temperature under the condition, a second required minimum thickness value T4 is calculated at the maximum available pressure and at a normal pressure under the condition, and a stage where it is determined whether both the first and second required minimum thickness values T3 and T4 are smaller than the measured thickness value T2 is used as a determination element. When both the first and second required minimum thickness values T3 and T4 are smaller than the measured thickness value T2, it is evaluated that the integrity passes. COPYRIGHT: (C)2008,JPO&INPIT
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