A Review of Probabilistic Structural Integrity Assessment in the Nuclear Sector and Possible Future Directions

Saeed Z Zare Chavoshi; Julian D Booker; Rick Bradford; Michael Martin

doi:10.1111/ffe.13572

A Review of Probabilistic Structural Integrity Assessment in the Nuclear Sector and Possible Future Directions

Saeed Z Zare Chavoshi^*, Julian D Booker, Rick Bradford, Michael Martin

^*Corresponding author for this work

Research output: Contribution to journal › Article (Academic Journal) › peer-review

10 Citations (Scopus)

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Abstract

There always exists uncertainty and variability in structural integrity assessments arising from lack of knowledge, modelling approximations or differences between as-manufactured components and as-operated components. This may ultimately impact on reactor lives. Such uncertainties and variabilities can be understood and quantified using probabilistic techniques together with reliability-based acceptance criteria, facilitating the quantification and management of risk. This review article provides a systematic appraisal of the latest worldwide literature and also unpublished reports from EDF UK nuclear plants, giving an overview of the
existing knowledge of probabilistic/reliability structural integrity methodologies and tools from a multifaceted stance, including failure modes, problem types, material types, employed codes, correlations, probability distributions, etc. Structural reliability analysis at different levels is discussed, and pertinent issues on convergence testing, required number of trails, sensitivity analysis, verification of individual analyses, extremely small probabilities, reactorwide failure probabilities, and digital twin structural integrity monitoring are elaborated.

Original language	English
Pages (from-to)	3227-3257
Number of pages	31
Journal	Fatigue and Fracture of Engineering Materials and Structures
Volume	44
Issue number	12
Early online date	23 Sept 2021
DOIs	https://doi.org/10.1111/ffe.13572
Publication status	Published - Dec 2021

Bibliographical note

Funding Information:
This paper is published by permission of EDF Energy. This work is a contribution to the EASICS Project, funded by the Department of Business, Energy and Industrial Strategy (BEIS). The authors gratefully acknowledge the financial support from the BEIS and EDF High Temperature Centre at the University of Bristol. SZC would like to thank Julian Johns from EDF Energy for his advice and support.

Publisher Copyright:
© 2021 John Wiley & Sons, Ltd.

Keywords

probabalistic assessment
structural integrity
nuclear reactor
failure

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title = "A Review of Probabilistic Structural Integrity Assessment in the Nuclear Sector and Possible Future Directions",

abstract = "There always exists uncertainty and variability in structural integrity assessments arising from lack of knowledge, modelling approximations or differences between as-manufactured components and as-operated components. This may ultimately impact on reactor lives. Such uncertainties and variabilities can be understood and quantified using probabilistic techniques together with reliability-based acceptance criteria, facilitating the quantification and management of risk. This review article provides a systematic appraisal of the latest worldwide literature and also unpublished reports from EDF UK nuclear plants, giving an overview of theexisting knowledge of probabilistic/reliability structural integrity methodologies and tools from a multifaceted stance, including failure modes, problem types, material types, employed codes, correlations, probability distributions, etc. Structural reliability analysis at different levels is discussed, and pertinent issues on convergence testing, required number of trails, sensitivity analysis, verification of individual analyses, extremely small probabilities, reactorwide failure probabilities, and digital twin structural integrity monitoring are elaborated. ",

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author = "{Zare Chavoshi}, {Saeed Z} and Booker, {Julian D} and Rick Bradford and Michael Martin",

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year = "2021",

month = dec,

doi = "10.1111/ffe.13572",

language = "English",

volume = "44",

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A Review of Probabilistic Structural Integrity Assessment in the Nuclear Sector and Possible Future Directions. / Zare Chavoshi, Saeed Z; Booker, Julian D; Bradford, Rick et al.
In: Fatigue and Fracture of Engineering Materials and Structures, Vol. 44, No. 12, 12.2021, p. 3227-3257.

Research output: Contribution to journal › Article (Academic Journal) › peer-review

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N1 - Funding Information: This paper is published by permission of EDF Energy. This work is a contribution to the EASICS Project, funded by the Department of Business, Energy and Industrial Strategy (BEIS). The authors gratefully acknowledge the financial support from the BEIS and EDF High Temperature Centre at the University of Bristol. SZC would like to thank Julian Johns from EDF Energy for his advice and support. Publisher Copyright: © 2021 John Wiley & Sons, Ltd.

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ER -

A Review of Probabilistic Structural Integrity Assessment in the Nuclear Sector and Possible Future Directions

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