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Title: Advanced valve motor operator diagnostic system

Abstract

A brief summary of the current use of diagnostic applications to motor-operated valves (MOVs) to satisfy the requirements of IE Bulletin 85-03, IE 85-03 (Supplement 1), and preventive maintenance applications is presented in this paper. This paper explains a new system for diagnostics, signature analysis, and direct measurement of actual load on MOV in the closed direction. This advanced valve motor operator diagnostic system (AVMODS) system comprises two complementary segments: (1) valve motor operator diagnostic system (V-MODS) and (2) motor current signature analysis (MCSA). AVMODS technical considerations regarding V-MODS and MCSA are discussed.

Authors:
Publication Date:
OSTI Identifier:
5228586
Report Number(s):
CONF-890833-
Journal ID: CODEN: TANSB; TRN: 90-004310
Resource Type:
Conference
Resource Relation:
Journal Name: Transactions of the American Nuclear Society, Supplement; (USA); Journal Volume: 59; Conference: 14. biennial conference on reactor operating experience: plant operations - the human element, Charlotte, NC (USA), 6-9 Aug 1989
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; NUCLEAR POWER PLANTS; REACTOR MAINTENANCE; VALVES; DIAGNOSTIC TECHNIQUES; ACTUATORS; DATA ACQUISITION; EXPERT SYSTEMS; INSTALLATION; MOTORS; PLANNING; PROGRAMMING; SENSITIVITY; SURVEILLANCE; CONTROL EQUIPMENT; EQUIPMENT; FLOW REGULATORS; MAINTENANCE; NUCLEAR FACILITIES; POWER PLANTS; THERMAL POWER PLANTS; 220200* - Nuclear Reactor Technology- Components & Accessories; 210800 - Nuclear Power Plants- Economics

Citation Formats

Thibault, C. Advanced valve motor operator diagnostic system. United States: N. p., 1989. Web.
Thibault, C. Advanced valve motor operator diagnostic system. United States.
Thibault, C. 1989. "Advanced valve motor operator diagnostic system". United States. doi:.
@article{osti_5228586,
title = {Advanced valve motor operator diagnostic system},
author = {Thibault, C.},
abstractNote = {A brief summary of the current use of diagnostic applications to motor-operated valves (MOVs) to satisfy the requirements of IE Bulletin 85-03, IE 85-03 (Supplement 1), and preventive maintenance applications is presented in this paper. This paper explains a new system for diagnostics, signature analysis, and direct measurement of actual load on MOV in the closed direction. This advanced valve motor operator diagnostic system (AVMODS) system comprises two complementary segments: (1) valve motor operator diagnostic system (V-MODS) and (2) motor current signature analysis (MCSA). AVMODS technical considerations regarding V-MODS and MCSA are discussed.},
doi = {},
journal = {Transactions of the American Nuclear Society, Supplement; (USA)},
number = ,
volume = 59,
place = {United States},
year = 1989,
month = 1
}

Conference:
Other availability
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  • This paper presents the results of full-scale high-energy qualification and flow interruption gate valve testing sponsored by the United States Nuclear Regulatory Commission (USNRC) and conducted by researchers from the Idaho National Engineering Laboratory (INEL). We modified two representative 6-in., 900-lb valve assemblies to include a high-temperature load cell in the valve stems to directly measure stem thrust. Instrumentation in the flow loop and in the motor operators measured all important responses. At various times during the test program, all of the currently popular diagnostic test systems also monitored the performance of the valve motor operators. The valves were subjectedmore » to hydraulic and leakage testing (ANSI B16.41, QV4) and to flow interruption (valve closure) testing at boiling water reactor (BWR) temperature and pressure line break conditions. The tests included reopening the valves at high flow. Test results show that current industry motor operator sizing equations are not conservative, that thrusts required to close valves are sensitive to the fluid temperature, and that the results of testing at lower pressures and flows can not be extrapolated to design basis flows, temperatures, and pressures. 13 figs.« less
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  • No abstract prepared.