Published April 2013 | Version v1
Journal article Metadata-only

Environmentally assistant fatigue analysis for LWR reactor vessel nozzle

Creators

  • 1. Shanghai Nuclear Engineering Research and Design Institute (China)

Description

Background: Considering the EAF (Environment Assistant Fatigue) effect during the design status is a key issue for generation Ⅲ nuclear power plant. Purpose: The calculation methodology of Fen (Environmentally Assistant Fatigue Factor) and strain ratio of ASME Code Case N-792 has been introduced in this paper. Methods: By creating 2D symmetry model of reactor pressure vessel nozzle, the environmentally assistant fatigue factor Fen and fatigue usage factor has been analyzed according Code Case N-792 with simplified and detailed integral methods. Results: The fatigue usage factor results of ASME-Ⅲ which does not consider environmental effect and Code Case N-792 which consider the environmental effect have been compared and discussed. Conclusions: And the fatigue life considering Fen effect of SCL1 section will reduce to about 1/3 of the life in air condition while the fatigue life of SCL2 decrease 3/5. (authors)

Additional details

Publishing Information

Journal Title
Nuclear Techniques
Journal Volume
36
Journal Issue
4
Journal Page Range
[7 p.]
ISSN
0253-3219

INIS

Country of Publication
China
Country of Input or Organization
China
INIS RN
47057389
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Descriptors DEI
CALCULATION METHODS; COMPARATIVE EVALUATIONS; DESIGN; FATIGUE; INTEGRALS; NOZZLES; NUCLEAR POWER PLANTS; PRESSURE VESSELS; SPECIFICATIONS; STRAINS; SYMMETRY; WATER COOLED REACTORS
Descriptors DEC
CONTAINERS; EVALUATION; MECHANICAL PROPERTIES; NUCLEAR FACILITIES; POWER PLANTS; REACTORS; THERMAL POWER PLANTS

Optional Information

Notes
Special Issue on Structural Mechanics in Reactor Technology; 4 figs., 8 tabs., 3 refs., 040640-1-040640-7