Document Detail


Structural safety analysis based on seismic service conditions for butterfly valves in a nuclear power plant.
MedLine Citation:
PMID:  24955416     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
The structural integrity of valves that are used to control cooling waters in the primary coolant loop that prevents boiling within the reactor in a nuclear power plant must be capable of withstanding earthquakes or other dangerous situations. In this study, numerical analyses using a finite element method, that is, static and dynamic analyses according to the rigid or flexible characteristics of the dynamic properties of a 200A butterfly valve, were performed according to the KEPIC MFA. An experimental vibration test was also carried out in order to verify the results from the modal analysis, in which a validated finite element model was obtained via a model-updating method that considers changes in the in situ experimental data. By using a validated finite element model, the equivalent static load under SSE conditions stipulated by the KEPIC MFA gave a stress of 135 MPa that occurred at the connections of the stem and body. A larger stress of 183 MPa was induced when we used a CQC method with a design response spectrum that uses 2% damping ratio. These values were lower than the allowable strength of the materials used for manufacturing the butterfly valve, and, therefore, its structural safety met the KEPIC MFA requirements.
Authors:
Sang-Uk Han; Dae-Gyun Ahn; Myeong-Gon Lee; Kwon-Hee Lee; Seung-Ho Han
Related Documents :
20646116 - Random regression models on legendre polynomials to estimate genetic parameters for wei...
16291616 - A stochastic model simulating pathogen-specific mastitis control in a dairy herd.
12588686 - An individual modelling tool for within and between lactation consecutive cases of clin...
21149696 - Hydraulic trade-offs and space filling enable better predictions of vascular structure ...
22068376 - Development of custom measurement system for biomechanical evaluation of independent wh...
16780956 - Optimizing fluctuation analysis of gabaaergic ipscs for accurate unitary currents.
Publication Detail:
Type:  Journal Article     Date:  2014-05-11
Journal Detail:
Title:  TheScientificWorldJournal     Volume:  2014     ISSN:  1537-744X     ISO Abbreviation:  ScientificWorldJournal     Publication Date:  2014  
Date Detail:
Created Date:  2014-06-23     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101131163     Medline TA:  ScientificWorldJournal     Country:  United States    
Other Details:
Languages:  eng     Pagination:  743470     Citation Subset:  IM    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Determinants of default from pulmonary tuberculosis treatment in kuwait.
Next Document:  Structure-Activity Relationship for Fe(III)-Salen-Like Complexes as Potent Anticancer Agents.