CASTOC: Crack growth behaviour of low alloy steel for pressure boundary components unter transient light water reactor (LWR) operating conditions

• Unité de recherche: PCRD EU
• Numéro de projet: 99.0715
• Titre du projet anglais: CASTOC: Crack growth behaviour of low alloy steel for pressure boundary components unter transient light water reactor (LWR) operating conditions

Mots-clé (Anglais)

Environmentally-assisted cracking; low-alloy steel; light water reactor; crack growth rate; primary pressure boundary components; transient operation conditions;
Nuclear Fission; Radiation Protection; Safety

Autre Numéro de projet (Anglais)

EU project number: FIKS-2000-00048

Programme de recherche (Anglais)

EU-programme: 5. Frame Research Programme - 5.5.2 Nuclear fission

Description succincte (Anglais)

See abstract

Autres indications (Anglais)

Full name of research-institution/enterprise:
Paul Scherrer Institut PSI
Laboratory for Safety and Accident Research

Partenaires et organisations internationales (Anglais)

Coordinator: MPA Stuttgart (D)

Résumé des résultats (Abstract) (Anglais)

The proposal addresses the ageing of primary pressure boundary components of nuclear power plants by environmentally assisted cracking. In particular, it deals with the crack growth behaviour of low alloy steels for reactor pressure vessels (eastern and western type) in light water reactor environment under static and cyclic load. Besides different crack geometries and specimen sizes transient conditions as postulated for plant operation will be considered during the test by varying water chemistry and mechanical load. The initiation of environmentally assisted cracking in pre-fatigued specimens will be forced by cyclic loading in the test environment. The results will lead to recommendations for service operation and for Code implementations. They will broaden the database for the lifetime assessment of nuclear power plants.

Références bases de données (Anglais)

Swiss Database: Euro-DB of the
State Secretariat for Education and Research
Hallwylstrasse 4
CH-3003 Berne, Switzerland
Tel. [phone]
Swiss Project-Number: 99.0715