Published August 2018 | Version v1
Miscellaneous Metadata-only

Risk-based optimization of reactor pressure vessel maintenance

Creators

  • 1. Kyoto Univ., Inst. of Advanced Energy, Uji, Kyoto (Japan)

Description

Reactor pressure vessel (RPV) steels are subjected to neutron irradiation that can lead to loss of fracture toughness. One of the critical issues for RPV structural integrity is related to the pressurized thermal shock (PTS) event. Risk assessment is important for safety evaluation and maintenance planning of a nuclear power plant. In this study, a new method was developed to assess a failure risk of RPV at PTS event for the risk-based maintenance. The failure risk was caused by fluctuations of stress intensity factor (K1) and fracture toughness (K1C) of cracks at the inner surface of the RPV. The optimization of conventional time-based maintenance of RPV was discussed. (author)

Part of:
Proceedings of the 14th annual meeting of Japan Society of Maintenology

Additional details

Additional titles

Original title (Japanese)
リスクを活用した合理的な圧力容器保全のための研究

Publishing Information

Imprint Title
Proceedings of the 14th annual meeting of Japan Society of Maintenology
Imprint Pagination
580 p.
Journal Page Range
p. 3-6

Conference

Title
14. annual meeting of Japan Society of Maintenology
Dates
2-4 Aug 2017
Place
Matsuyama, Ehime (Japan)

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
50001378
Subject category
S22: GENERAL STUDIES OF NUCLEAR REACTORS;
Resource subtype / Literary indicator
Conference, Non-conventional Literature
Descriptors DEI
BRITTLENESS; DUCTILE-BRITTLE TRANSITIONS; FORECASTING; FRACTURE MECHANICS; IRRADIATION; PRESSURE VESSELS; PROBABILISTIC ESTIMATION; QUANTIZATION; REACTOR VESSELS; REGULATORY GUIDES; RISK ASSESSMENT; SEVERE ACCIDENTS; THERMAL SHOCK; THERMAL STRESSES
Descriptors DEC
ACCIDENTS; BEYOND-DESIGN-BASIS ACCIDENTS; CALCULATION METHODS; CONTAINERS; DOCUMENT TYPES; MECHANICAL PROPERTIES; MECHANICS; STRESSES

Optional Information

Notes
5 refs., 4 figs., 1 tab. Imprint:#65E5##672C##4FDD##5168##5B66##4F1A##7B2C#14#56DE##5B66##8853##8B1B##6F14##4F1A##8981##65E8##96C6#