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http://dx.doi.org/10.3795/KSME-A.2009.33.8.826

Investigation of the Performance Based Structural Safety Factor of Elbows in Nuclear Power Plants  

Lee, Sung-Ho (한전전력연구원 원자력발전연구소)
Park, Chi-Yong (한전전력연구원 원자력발전연구소)
Park, Jai-Hak (충북대학교 안전공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.33, no.8, 2009 , pp. 826-831 More about this Journal
Abstract
The piping systems in nuclear power plant are composed of various typed pipes such as straight, elbow pipe, branch and reducer etc. The elbow is connected from straight pipe to another pipes in order to establish the complicated piping system. Elbow is one of very important components considering management of wall thinning degradation. It is however applied by various loads such as system pressure, earthquake, postulated break loading and many transient loads, which provoke simply the internal pressure, bending and torsional stress. In this study, firstly pipes in the secondary system of the nuclear power plant are classified as pipe size and type for selecting the investigating range. Next, a large number of finite element analysis considering the all typed dimensions of commercial pipe has been performed to find out the behavior of TES(twice elastic slop) plastic load of elbows, which is based on evaluation of the structural safety factor. Finally performance based structural safety factor was investigated comparing with maximum allowable load by construction code.
Keywords
Structural Safety Factor; Elbow; TES Plastic Load; Design Allowable Stress;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By SCOPUS : 0
연도 인용수 순위
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