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Assessment of electrical equipment aging for nuclear power plant

Abstract

The electrical and instrumentation equipments, especially whose parts are made of polymer material, are gradually degraded by thermal and radiation environment in the normal operation, and the degradation is thought to progress rapidly when they are exposed to the environment of the design basis event (DBE). The integrity of the equipments is evaluated by the environmental qualification (EQ) test simulating the environment of the normal operation and the DBE. The project of 'Assessment of Cable Aging for Nuclear Power Plants' (ACA, 2002-2008) indicated the importance of applying simultaneous thermal and radiation aging for simulating the aging in normal operation. The project of 'Assessment of Electrical Equipment Aging for Nuclear Power Plants' (AEA) was initiated in FY2008 to apply the outcome of ACA to the other electrical and instrumentation equipment and to establish an advanced EQ test method that can appropriately simulate the environment in actual plants. In FY2012, aging characteristics of thermal aging and simultaneous aging were obtained for the epoxy resin of electrical penetrations and the O-ring of connectors. Physical property measurement was carried out for epoxy resin of electrical penetration subject to the type testing in FY2010. (author)
Publication Date:
Aug 15, 2013
Product Type:
Technical Report
Report Number:
JNES-RE-2013-0001-Rev.1
Resource Relation:
Other Information: 4 refs., 19 figs., 9 tabs.; This record replaces 46032166; Related Information: In: Annual safety research report, JFY 2012| Japan Nuclear Energy Safety Organization, Tokyo (Japan)| 708 p.
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; 42 ENGINEERING; ACTIVATION ENERGY; AGING; DESIGN-BASIS ACCIDENTS; ENVIRONMENT; EPOXIDES; GASKETS; NUCLEAR POWER PLANTS; PHYSICAL PROPERTIES; RADIATION EFFECTS; SIMULATION; THERMAL DEGRADATION
OSTI ID:
22325949
Research Organizations:
Japan Nuclear Energy Safety Organization, Plant Inspection and Maintenance Evaluation Department, Tokyo (Japan)
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
TRN: JP1501471032166
Availability:
Available from the Internet at URL https://warp.ndl.go.jp/info:ndljp/pid/10249547/www.nsr.go.jp/archive/jnes/content/000125907.pdf
Submitting Site:
INIS
Size:
page(s) 195-204
Announcement Date:
Apr 14, 2015

Citation Formats

None. Assessment of electrical equipment aging for nuclear power plant. Japan: N. p., 2013. Web.
None. Assessment of electrical equipment aging for nuclear power plant. Japan.
None. 2013. "Assessment of electrical equipment aging for nuclear power plant." Japan.
@misc{etde_22325949,
title = {Assessment of electrical equipment aging for nuclear power plant}
author = {None}
abstractNote = {The electrical and instrumentation equipments, especially whose parts are made of polymer material, are gradually degraded by thermal and radiation environment in the normal operation, and the degradation is thought to progress rapidly when they are exposed to the environment of the design basis event (DBE). The integrity of the equipments is evaluated by the environmental qualification (EQ) test simulating the environment of the normal operation and the DBE. The project of 'Assessment of Cable Aging for Nuclear Power Plants' (ACA, 2002-2008) indicated the importance of applying simultaneous thermal and radiation aging for simulating the aging in normal operation. The project of 'Assessment of Electrical Equipment Aging for Nuclear Power Plants' (AEA) was initiated in FY2008 to apply the outcome of ACA to the other electrical and instrumentation equipment and to establish an advanced EQ test method that can appropriately simulate the environment in actual plants. In FY2012, aging characteristics of thermal aging and simultaneous aging were obtained for the epoxy resin of electrical penetrations and the O-ring of connectors. Physical property measurement was carried out for epoxy resin of electrical penetration subject to the type testing in FY2010. (author)}
place = {Japan}
year = {2013}
month = {Aug}
}