Corrosion Science and Technology

The Corrosion Science Society of Korea (한국부식방식학회)
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A Study on the Verification of Network Flow Analysis Methodology of CHECWORKS Program used in Pipe Wall Thinning Management

배관감육관리에 활용되는 CHECWORKS 프로그램의 열수력해석 방법론 검증에 관한 연구

  • Received : 2012.10.12
  • Accepted : 2013.04.25
  • Published : 2013.04.15
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Abstract

In general, pipelines at nuclear power plants are affected by various types of degradation mechanisms and may be ruptured after gradually thinning. FAC (Flow-Accelerated Corrosion) is typical aging mechanism affecting the secondary side piping system. In Korea nuclear power plants, CHECWORKS program have been used for management of wall thinning damages. However, sometimes, CHECWORKS program shows wrong results at the stage of NFA (Network Flow Analysis) in case of complex pipelines. This paper describes the calculation results of pressure drop in a complex pipeline and single line by using the CHECWORKS program and the analysis results are compared with those of engineering calculation results including errors between them.

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References

  1. Y. A. Cengel and J. M. Cimbala, Fluid Mechanics Fundamentals & Applications, $1^{st}$ ed, McGraw-Hill (2005).
  2. CHECWORKS, Steam-Feedwater Application Help System - Network Flow Analysis, CHECWORKS 3.0 SP-2, USA (2010).
  3. B. Chexal and J. Horowitz, Flow-Accelerated Corrosion in Power Plants, Rev. 1, EPRI. (1998).
  4. I. E Idelchik, Handbook of Hydraulic Resistance (2005).
  5. Crane Co., Flow of Fluids Through Valve, Fittings, and Pipe, Crane Technical Paper No. 410, $22^{th}$, New York, USA (1985).