Comparison of approaches for estimating pipe rupture frequencies for risk-informed in-service inspections
| Autor: | Paeivi Karjalainen-Roikonen, Kaisa Simola, Urho Pulkkinen, Arja Saarenheimo, Heli Talja |
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| Rok vydání: | 2004 |
| Předmět: |
Piping
risk-informed in-service inspection business.industry Probabilistic logic Fracture mechanics probabilistic fracture mechanics Structural engineering Intergranular corrosion Industrial and Manufacturing Engineering Corrosion fracture mechanics fracture intergranular stress corrosion cracking Fracture (geology) Stress corrosion cracking pipe break frequencies Safety Risk Reliability and Quality Material properties business nuclear safety |
| Zdroj: | Simola, K, Pulkkinen, U, Karjalainen-Roikonen, P & Saarenheimo, A 2004, ' Comparison of approaches for estimating pipe rupture frequencies for risk-informed in-service inspections ', Reliability Engineering and System Safety, vol. 84, no. 1, pp. 65-74 . https://doi.org/10.1016/j.ress.2003.10.008 |
| ISSN: | 0951-8320 |
| DOI: | 10.1016/j.ress.2003.10.008 |
| Popis: | This paper describes the comparative study of two approaches to estimate pipe leak and rupture frequencies for piping. One method is based on a probabilistic fracture mechanistic model while the other one is based on statistical estimation of rupture frequencies from a large database. In order to be able to compare the approaches and their results, the rupture frequencies of some selected welds have been estimated using both of these methods. This paper highlights the differences both in methods, input data, need and use of plant specific information and need of expert judgement. The study focuses on one specific degradation mechanism, namely the intergranular stress corrosion cracking. This is the major degradation mechanism in old stainless steel piping in BWR environment, and its growth is influenced by material properties, stresses and water chemistry. |
| Databáze: | OpenAIRE |
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