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Title: Aging and service wear of solenoid-operated valves used in safety systems of nuclear power plants. Volume 2, Evaluation of monitoring methods

Abstract

Solenoid-operated valves (SOVS) were studied at Oak Ridge National Laboratory as part of the US Nuclear Regulatory Commission Nuclear Plant Aging Research (NPAR) Program. The primary objective of the study was to identify, evaluate, and recommend methods for inspection, surveillance, monitoring, and maintenance of SOVs that can help ensure their operational readine--is, their ability to perform required safety functions under all anticipated operating condition--because, under certain circumstances, failure of one of these small and relatively inexpensive devices could have serious consequences. An earlier (Phase I) NPAR Program study described SOV failure modes and causes and identified measurable parameters thought to be linked to the progress of degradations that may ultimately result in functional failure of the valve. Using this earlier work as a guide, the present (Phase II) study focuses on devising and then demonstrating the effectiveness of performance-measuring techniques and equipment that show promise for detecting and trending the progress of such degradations before they reach a critical stage. Intrusive techniques requiring the addition of magnetic or acoustic sensors or the application of special test signals were investigated briefly, but major emphasis was placed on the examination of condition-indicating techniques that can be applied with minimal cost and impactmore » on plant operation.« less

Authors:
 [1]
  1. Oak Ridge National Lab., TN (United States)
Publication Date:
Research Org.:
Nuclear Regulatory Commission, Washington, DC (United States). Div. of Engineering; Oak Ridge National Lab., TN (United States)
Sponsoring Org.:
Nuclear Regulatory Commission, Washington, DC (United States)
OSTI Identifier:
10167892
Report Number(s):
NUREG/CR-4819-Vol.2; ORNL/TM-12038-Vol.2
ON: TI92019024
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Jul 1992
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; VALVES; AGING; MONITORING; NUCLEAR POWER PLANTS; REACTOR SAFETY; SOLENOIDS; SERVICE LIFE; MAINTENANCE; EVALUATION; RECOMMENDATIONS; 220200; 220900; COMPONENTS AND ACCESSORIES

Citation Formats

Kryter, R C. Aging and service wear of solenoid-operated valves used in safety systems of nuclear power plants. Volume 2, Evaluation of monitoring methods. United States: N. p., 1992. Web.
Kryter, R C. Aging and service wear of solenoid-operated valves used in safety systems of nuclear power plants. Volume 2, Evaluation of monitoring methods. United States.
Kryter, R C. Wed . "Aging and service wear of solenoid-operated valves used in safety systems of nuclear power plants. Volume 2, Evaluation of monitoring methods". United States.
@article{osti_10167892,
title = {Aging and service wear of solenoid-operated valves used in safety systems of nuclear power plants. Volume 2, Evaluation of monitoring methods},
author = {Kryter, R C},
abstractNote = {Solenoid-operated valves (SOVS) were studied at Oak Ridge National Laboratory as part of the US Nuclear Regulatory Commission Nuclear Plant Aging Research (NPAR) Program. The primary objective of the study was to identify, evaluate, and recommend methods for inspection, surveillance, monitoring, and maintenance of SOVs that can help ensure their operational readine--is, their ability to perform required safety functions under all anticipated operating condition--because, under certain circumstances, failure of one of these small and relatively inexpensive devices could have serious consequences. An earlier (Phase I) NPAR Program study described SOV failure modes and causes and identified measurable parameters thought to be linked to the progress of degradations that may ultimately result in functional failure of the valve. Using this earlier work as a guide, the present (Phase II) study focuses on devising and then demonstrating the effectiveness of performance-measuring techniques and equipment that show promise for detecting and trending the progress of such degradations before they reach a critical stage. Intrusive techniques requiring the addition of magnetic or acoustic sensors or the application of special test signals were investigated briefly, but major emphasis was placed on the examination of condition-indicating techniques that can be applied with minimal cost and impact on plant operation.},
doi = {},
url = {https://www.osti.gov/biblio/10167892}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {7}
}

Technical Report:
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