| 摘要 |
PROBLEM TO BE SOLVED: To accurately predict crack development lifetime of a plant structure by measuring with high accuracy the corrosion potential of the plant structure. SOLUTION: This crack development lifetime predicting system 30 of the plant structure for predicting the crack development lifetime of the plant structure in a corrosive environment has a corrosion potential measuring means for measuring the corrosion potential near a portion 35, whose lifetime in the plant structure is to be evaluated; and a lifetime prediction operation device 34 for predicting the crack development lifetime by using the measured corrosion potential and crack development characteristic data on a constituent material forming the portion whose lifetime is to be evaluated. The corrosion potential measuring means is formed, by arranging a sample electrode 31 constituted of the same material as the portion whose lifetime is to be evaluated and a reference electrode 32 for reference near the portion whose lifetime is to be evaluated, and is used for measuring the corrosion potential from the potential differences among the electrodes. COPYRIGHT: (C)2009,JPO&INPIT
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