Development of a new CVAP structural analysis methodology of APR1400 reactor internals using scaled model tests

The U.S. Nuclear Regulatory Commission (NRC) Regulatory Guide (RG) 1.20 provides guidance on the comprehensive vibration assessment program (CVAP) to be performed on reactor internals during pre-operational and startup tests. The purpose of the program is to identify loads that could cause vibration...

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Bibliographic Details
Published inNuclear engineering and technology Vol. 56; no. 1; pp. 309 - 316
Main Authors Moon, Jongsung, Jin, Inseong, Ko, Doyoung, Kim, Kyuhyung
Format Journal Article
LanguageEnglish
Published Elsevier 01.01.2024
한국원자력학회
Subjects
APR1400
CVAP
Reactor internals
Response analysis
Vibration
원자력공학
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Summary:The U.S. Nuclear Regulatory Commission (NRC) Regulatory Guide (RG) 1.20 provides guidance on the comprehensive vibration assessment program (CVAP) to be performed on reactor internals during pre-operational and startup tests. The purpose of the program is to identify loads that could cause vibration in the reactor internals and to ensure that these vibrations do not affect their structural integrity. The structural vibrational analysis program involves creating finite element analysis models of the reactor internals and calculating their structural responses when subjected to vibration loads. The appropriateness of the structural analysis methodology must be demonstrated through benchmarks or any other reasonable means. Although existing structural analysis methodologies have been proven to be appropriate and are widely used, this paper presents the development of an improved new structural analysis methodology for APR1400 reactor internals using scaled model tests.
ISSN:1738-5733
2234-358X
DOI:10.1016/j.net.2023.10.002