外面応力腐食割れ(ESCC)の感受性抽出の スクリーニング方法 …

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(ESCC) . . . 90% . (ESCC). . . . . . . 50 . . . . 150 . . . 150 800 . . . 118 . 30 ESCC . . Relationship of damage mechanisms that became the leakage over 30. years in the petrochemical plant Safety Tomorrow 14. ESCC . ESCC . . . SUS-304 . ESCC . . . ESCC M/H . . ESCC . . ESCC . . . . ( ) . . The relationship between the stress corrosion cracking and rain waer retention area under the insulation materials 15 Safety Tomorrow . The relationship between the rainwater retention and corrosion with ESCC of equipment . . . . . . . DFR(Decreasing Failure Rate) . ESCC . . SCC 100MPa . CFR (Constant Failure Rate) IFR. (Increasing Failure Rate) . Safety Tomorrow 16. . 12. Bathtub curve es mated 10. DFR. 8 IFR. CFR. 6. 4. 2. 0. 0 10 20 30 40 50. . Relationship of Detected years and equipment wall thickness of the ESCC. m IFR. ESCC ESCC. [1] . . DFR m . 20 CFR m . 21 IFR. DFR (m) . CFR ESCC . IFR . . m . ( ) . [1]. . t . F =1 exp ( ).

esccの損傷事例の特徴を下記にまとめる。 また、図1.2には配管でのesccの特徴を、発 生部位・部品を可視化として捕らえた ...

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