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Title: Risk-ranking IST components into two categories

Abstract

The ASME has utilized several schemes for identifying the appropriate scope of components for inservice testing (IST). The initial scope was ASME Code Class 1/2/3, with all components treated equally. Later the ASME Operations and Maintenance (O&M) Committee decided to use safe shutdown and accident mitigation as the scoping criteria, but continued to treat all components equal inside that scope. Recently the ASME O&M Committee decided to recognize service condition of the component, hence the comprehensive pump test. Although probabilistic risk assessments (PRAs) are incredibly complex plant models and computer hardware and software intensive, they are a tool that can be utilized by many plant engineering organizations to analyze plant system and component applications. In 1992 the ASME O&M Committee got interested in using the PRA as a tool to categorize its pumps and valves. In 1994 the ASME O&M Committee commissioned the ASME Center for Research and Technology Development (CRTD) to develop a process that adapted the PRA technology to IST. In late 1995 that process was presented to the ASME O&M Committee. The process had three distinct portions: (1) risk-rank the IST components; (2) develop a more effective testing strategy for More Safety Significant Components; and (3) developmore » a more economic testing strategy for Less Safety Significant Components.« less

Authors:
Publication Date:
Research Org.:
American Society of Mechanical Engineers, New York, NY (United States)
OSTI Identifier:
402006
Report Number(s):
NUREG/CP-0152; CONF-9607103-
ON: TI96013645; TRN: 96:005268-0040
Resource Type:
Conference
Resource Relation:
Conference: 4. NRC/ASME symposium on valve and pump testing in nuclear power plants, Washington, DC (United States), 15-18 Jul 1996; Other Information: PBD: [1996]; Related Information: Is Part Of Proceedings of the 4th NRC/ASME symposium on valve and pump testing; PB: 719 p.
Country of Publication:
United States
Language:
English
Subject:
22 NUCLEAR REACTOR TECHNOLOGY; REACTOR COMPONENTS; IN-SERVICE INSPECTION; RISK ASSESSMENT; NUCLEAR POWER PLANTS; PROBABILISTIC ESTIMATION; TESTING

Citation Formats

Rowley, C W. Risk-ranking IST components into two categories. United States: N. p., 1996. Web.
Rowley, C W. Risk-ranking IST components into two categories. United States.
Rowley, C W. Sun . "Risk-ranking IST components into two categories". United States. https://www.osti.gov/servlets/purl/402006.
@article{osti_402006,
title = {Risk-ranking IST components into two categories},
author = {Rowley, C W},
abstractNote = {The ASME has utilized several schemes for identifying the appropriate scope of components for inservice testing (IST). The initial scope was ASME Code Class 1/2/3, with all components treated equally. Later the ASME Operations and Maintenance (O&M) Committee decided to use safe shutdown and accident mitigation as the scoping criteria, but continued to treat all components equal inside that scope. Recently the ASME O&M Committee decided to recognize service condition of the component, hence the comprehensive pump test. Although probabilistic risk assessments (PRAs) are incredibly complex plant models and computer hardware and software intensive, they are a tool that can be utilized by many plant engineering organizations to analyze plant system and component applications. In 1992 the ASME O&M Committee got interested in using the PRA as a tool to categorize its pumps and valves. In 1994 the ASME O&M Committee commissioned the ASME Center for Research and Technology Development (CRTD) to develop a process that adapted the PRA technology to IST. In late 1995 that process was presented to the ASME O&M Committee. The process had three distinct portions: (1) risk-rank the IST components; (2) develop a more effective testing strategy for More Safety Significant Components; and (3) develop a more economic testing strategy for Less Safety Significant Components.},
doi = {},
url = {https://www.osti.gov/biblio/402006}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1996},
month = {12}
}

Conference:
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