Annealing and re-embrittlement of RPV materials - State-of-the-art report: ATHENA WP-4Funded under: FP7-EURATOM
Annealing of a reactor pressure vessel embrittled by neutron irradiation constitutes the only known technique to restore the initial material properties, to an extent that depends on the annealing conditions and on the materials. This technique is used in WWER-440 type reactor pressure vessels. A very important related issue is the one of re-embrittlement behaviour of the material after the annealing. In this respect, there is an obvious link with radiation embrittlement understanding. This report compiles the vast amount of information on annealing and re-embrittlement, which is available in the European countries where such annealing operations have been performed. In addition this topic was also investigated in various TACIS-PHARE projects, and the conclusions are included here as well. To complete the state-of-the-art, the results from a number of annealing experiments carried out in US on "Western" type RPV steels have also been considered.
Bibliographic Reference: EUR 23449 EN (2008), 138 pp. Free of charge
Availability: http://bookshop.europa.eu/is-bin/INTERSHOP.enfinity/WFS/EU-Bookshop-Site/en_GB/-/EUR/ViewPublication-Start?PublicationKey=LDNA23449 (Catalogue Number: LD-NA-23449-EN-C)
Record Number: 200910274 / Last updated on: 2009-09-22
Original language: en
Available languages: en