PSI - Issue 41

Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2022) 000–000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000–000 Available online at www.sciencedirect.com ScienceDirect

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Procedia Structural Integrity 41 (2022) 384–393

© 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the MedFract2Guest Editors. © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the MedFract2Guest Editors. Keywords: Probabilistic fracture mechanics; crack initiation and growth; residual stresses; structural reliability; intergranular stress corrosion cracking; pressured pipes. Abstract To a dr ss the ffect of Intergranular stress corrosion cracking (IGSCC) on the probability of a leak in BWR piping, we have introduced some changes to the model of IGSCC f r the Probabilistic fracture mechanics PRAISE code. This semi-empirical mod l is b sed on experimental and field data ompiled from several sources. Usi g probabilistic techniques, the model addr sses various stress corrosion phenomena, including crack growth, crack initiation, and linking of multiple cracks. The model also considers the ffect of residual stresses in addition to yclic stresses resulti g fr m n rm l plant o eration. Residual stress s which are an inherent result of conv ntio al w lding pro esses have long been known to play an important role in the failure of structural components. Such str sses can have a b neficial or detrimental influence, depending primarily on whether they are tensile or compressive at the inside surface of the pip . Residual stresses undoubtedly ar influential in both the initiation a propagation of cracks. The purpose of this paper is to review the influence of residual stresses on the reliability of piping under IGSCC. A procedure such as induction heating stress improvement (IHSI) is a means of altering the residual stress pattern in a pipe. Examples of the use of this technique to the initiation and growth of stress corrosion cracks in pipes are presented for various pipe sizes and residual stress distributions. The effectiven ss of IHSI as an eternal countermeasure for IGSCC depends upon the level of service stress as well as the crack size and its large benefit is immediately apparent. © 2022 The Authors. Published by ELSEVIER B.V. This is an ope access article under t CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the MedFract2Guest Editors. Keywords: Probabilistic fracture mechanics; crack initiation and growth; residual stresses; structural reliability; intergranular stress corrosion cracking; pressured pipes. Abstract To address the effect of Intergranular stress corrosion cracking (IGSCC) on the probability of a leak in BWR piping, we have introduced some changes to the model of IGSCC for the Probabilistic fracture mechanics PRAISE code. This semi-empirical model is based on experimental and field data compiled from several sources. Using probabilistic techniques, the model addresses various stress corrosion phenomena, including crack growth, crack initiation, and linking of multiple cracks. The model also considers the effect of residual stresses in addition to cyclic stresses resulting from normal plant operation. Residual stresses which are an inherent result of conventional welding processes have long been known to play an important role in the failure of structural components. Such stresses can have a beneficial or detrimental influence, depending primarily on whether they are tensile or compressive at the inside surface of the pipe. Residual stresses undoubtedly are influential in both the initiation and propagation of cracks. The purpose of this paper is to review the influence of residual stresses on the reliability of piping under IGSCC. A procedure such as induction heating stress improvement (IHSI) is a means of altering the residual stress pattern in a pipe. Examples of the use of this technique to the initiation and growth of stress corrosion cracks in pipes are presented for various pipe sizes and residual stress distributions. The effectiveness of IHSI as an eternal countermeasure for IGSCC depends upon the level of service stress as well as the crack size and its large benefit is immediately apparent. 2nd Mediterranean Conference on Fracture and Structural Integrity The Effect of Induction Heating Stress Remedies on piping reliability Chouaib Zeghida a , Mohamed Amine Belyamna a , Samira Tlili b , Abdelmoumene Guedri a* 2nd Mediterranean Conference on Fracture and Structural Integrity The Effect of Induction Heating Stress Remedies on piping reliability Chouaib Zeghida a , Mohamed Amine Belyamna a , Samira Tlili b , Abdelmoumene Guedri a* a Infra-Res Laboratory, Department of Mechanical Engineering, University of Souk Ahras, Souk Ahras, Algeria b Research Center in Industrial Technologies CRTI, P.O. Box 64, Cheraga 16014 Algiers, Algeria a Infra-Res Laboratory, Department of Mechanical Engineering, University of Souk Ahras, Souk Ahras, Algeria b Research Center in Industrial Technologies CRTI, P.O. Box 64, Cheraga 16014 Algiers, Algeria

* Corresponding author. Tel.: +213672831024. E-mail address: a.guedri@univ-soukahras.dz * Corresponding author. Tel.: +213672831024. E-mail address: a.guedri@univ-soukahras.dz

2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review under responsibility of the MedFract2Guest Editors. 2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review under responsibility of the MedFract2Guest Editors.

2452-3216 © 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the MedFract2Guest Editors. 10.1016/j.prostr.2022.05.044