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http://dx.doi.org/10.5293/KFMA.2009.12.2.031

A Evaluation Method of Operational Performance for Air-operated Gate Valve  

Kim, Dae-Woong (한전 전력연구원)
Park, Sung-Keun (한전 전력연구원)
Kang, Shin-Cheul (한전 전력연구원)
Kim, Yang-Suk (한전 전력연구원)
Publication Information
The KSFM Journal of Fluid Machinery / v.12, no.2, 2009 , pp. 31-38 More about this Journal
Abstract
The valve performance has been evaluated from the theoretical equation based on design information such as packing thrust, spring preload and friction coefficient(${\mu}$). The accuracy of those data can be lower than that of vendor's initial design data. Especially, the friction coefficient can be degraded with time than the original condition and the valve performance calculated using the previous friction coefficient can not be available. Accordingly, this paper is describing a new performance evaluation method of valve based on diagnostic test data which are acquired from a site valve tested in static and dynamic conditions. Especially, this paper provides a new method using friction coefficient(${\mu}$) which is derived from the diagnostic test data acquired in the valve's design basis condition.
Keywords
Air-operated gate valve; Required thrust; Actuator capability; Operation margin;
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  • Reference
1 D. W. Kirn and S. Y. Yoo, 2007, 'Effects of Differential Pressure on the Perforrnance of Motor Operated Flexible Wedge Gate Valve,' Journal of KSME, B Vol. 31, pp. 151-158
2 Wang, J. K., Sharrna, V. and Kalsi, M.S., 'Stem Thrust Prediction Model for Westinghouse Wedge Gate Valves with Linkage Type Stem-to-Disk Connection,' Fourth NRC/ ASME Symposium on Valve and Pump Testing, pp. 1B-77-81
3 The Joint Owners Group AOV Committee, 2000, 'Joint Owners Group Air Operated Valve Program -Technical Issues & Technical Position Papers'
4 U.S. Nuclear Regulatory Commission, 1989, 'Generic Letter 89-10 Safety- Related Motor Operated Valve Testing and Surveillance'
5 A. P. Wise, 1990, 'Application Guide for Motor-Operated Valves in Nuclear Power Plants,' EPRI NP-6660-D
6 J. Hosler, 1999, 'Air-Operated Valve Evaluation Guide,' EPRI TR-107322