Approaches to estimate pipe failure rates for risk-informed in-service applications at nuclear power plants

Otso Cronvall, Arja Saarenheimo, Kaisa Simola, Heli Talja

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

Piping failure frequencies are needed e.g. for quantifying initiating event frequencies in probabilistic safety assessments (PSA), and for the application of quantitative risk-informed in-service inspection methodology. The paper summaries different approaches to estimate failure frequencies of piping at nuclear power plants (NPPs). These approaches are the use of structural reliability models, statistical estimation from operating experience data and the use of expert judgement for probability statements based on e.g. deterministic analyses. We illustrate the use of these approaches with a simple example. Further we discuss what kind of input data is needed and evaluate their availability.
Original languageEnglish
Title of host publicationProceedings of the 25th ESReDA Seminar
Number of pages13
Publication statusPublished - 2003
MoE publication typeA4 Article in a conference publication
EventESReDA 25th Seminar: Lifetime Management of Structures - Paris, France
Duration: 17 Nov 200319 Nov 2003

Seminar

SeminarESReDA 25th Seminar
CountryFrance
CityParis
Period17/11/0319/11/03

Fingerprint

Nuclear power plants
Inspection
Pipe
Availability
Statistical Models

Keywords

  • risk analysis
  • RI-ISI
  • probability
  • fracture mechanics
  • database
  • analysis code
  • NPP
  • piping

Cite this

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title = "Approaches to estimate pipe failure rates for risk-informed in-service applications at nuclear power plants",
abstract = "Piping failure frequencies are needed e.g. for quantifying initiating event frequencies in probabilistic safety assessments (PSA), and for the application of quantitative risk-informed in-service inspection methodology. The paper summaries different approaches to estimate failure frequencies of piping at nuclear power plants (NPPs). These approaches are the use of structural reliability models, statistical estimation from operating experience data and the use of expert judgement for probability statements based on e.g. deterministic analyses. We illustrate the use of these approaches with a simple example. Further we discuss what kind of input data is needed and evaluate their availability.",
keywords = "risk analysis, RI-ISI, probability, fracture mechanics, database, analysis code, NPP, piping",
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language = "English",
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Cronvall, O, Saarenheimo, A, Simola, K & Talja, H 2003, Approaches to estimate pipe failure rates for risk-informed in-service applications at nuclear power plants. in Proceedings of the 25th ESReDA Seminar. ESReDA 25th Seminar, Paris, France, 17/11/03.

Approaches to estimate pipe failure rates for risk-informed in-service applications at nuclear power plants. / Cronvall, Otso; Saarenheimo, Arja; Simola, Kaisa; Talja, Heli.

Proceedings of the 25th ESReDA Seminar. 2003.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

TY - GEN

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AU - Cronvall, Otso

AU - Saarenheimo, Arja

AU - Simola, Kaisa

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N2 - Piping failure frequencies are needed e.g. for quantifying initiating event frequencies in probabilistic safety assessments (PSA), and for the application of quantitative risk-informed in-service inspection methodology. The paper summaries different approaches to estimate failure frequencies of piping at nuclear power plants (NPPs). These approaches are the use of structural reliability models, statistical estimation from operating experience data and the use of expert judgement for probability statements based on e.g. deterministic analyses. We illustrate the use of these approaches with a simple example. Further we discuss what kind of input data is needed and evaluate their availability.

AB - Piping failure frequencies are needed e.g. for quantifying initiating event frequencies in probabilistic safety assessments (PSA), and for the application of quantitative risk-informed in-service inspection methodology. The paper summaries different approaches to estimate failure frequencies of piping at nuclear power plants (NPPs). These approaches are the use of structural reliability models, statistical estimation from operating experience data and the use of expert judgement for probability statements based on e.g. deterministic analyses. We illustrate the use of these approaches with a simple example. Further we discuss what kind of input data is needed and evaluate their availability.

KW - risk analysis

KW - RI-ISI

KW - probability

KW - fracture mechanics

KW - database

KW - analysis code

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BT - Proceedings of the 25th ESReDA Seminar

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