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http://dx.doi.org/10.7734/COSEIK.2016.29.3.245

Environmental Fatigue Evaluation of Top-Mounted In-Core Instrumentation Nozzle  

Yoon, Hyo-Sub (KEPCO Engineering and Construction Company, Mechanical System Engineering Group)
Kim, Jong-Min (KEPCO Engineering and Construction Company, Mechanical System Engineering Group)
Maeng, Cheol-Soo (KEPCO Engineering and Construction Company, Mechanical System Engineering Group)
Kim, Gee-Seok (KEPCO Engineering and Construction Company, Mechanical System Engineering Group)
Kim, Hyun-Min (KEPCO Engineering and Construction Company, Mechanical System Engineering Group)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.29, no.3, 2016 , pp. 245-252 More about this Journal
Abstract
The development of Top-Mounted In-Core Instrumentation(TM-ICI) is an ongoing project to reduce the risk due to severe accidents by inserting the instrumentation into a reactor closure head instead of a reactor bottom head. As part of this project, environmental fatigue analyses for TM-ICI nozzle have been performed using two methods of NUREG/CR-6909 and Code Case N-761. TM-ICI nozzle is subjected to transient loads for level A, level B and test conditions that should be evaluated for a fatigue analysis. It is found that a cumulative usage factor considering reactor coolant environment for TM-ICI nozzle is evaluated as less than 1, which is ASME Code allowable criteria of a fatigue analysis.
Keywords
reactor pressure vessel; top-mounted in-core instrumentation nozzle; environmental fatigue evaluation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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