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Title: Priority ranking of safety-related systems for structural enhancement assessment at Savannah River Site

Abstract

In order to extend the service life of safety related structures and systems in a logical manner, a Structural Enhancement Program was initiated to evaluate the structural integrity of eight (8) systems, namely: Cooling Water System, Emergency Cooling System, Moderator Recovery System supplementary Safety System, Water Removal System, Service Raw Water System, Service Clarified Water System, and River Water System. Since the level of importance of each system to reactor operations varies from one system to another, the scope of structural integrity evaluation for each system should be prioritized accordingly. This paper presents the assessment of system priority for structural evaluation based on a ranking methodology and specifies the level of structural evaluation consistent with the established priority. The effort was undertaken by a five-member panel representing four (4) major disciplines, including. structures, reactor engineering/operations, risk management and materials. The above systems were divided into a total of thirty-five (35) subsystem. These subsystems were then ranked with six (6) attributes, namely: Safety Classification, Degradation Mechanisms, Difficulty of Replacement, Failure Mode, Radiation Dose to Workers and Consequence of Failure. Each attribute was assigned a set of consequences or events with corresponding weighting scores. The results of the ranking process yielded twomore » groups of subsystems, categorized as Priority I and II subsystems. The level of structural assessment was then formulated accordingly. The prioritized approach will allow more efficient allocation of resources, so that the Structural Enhancement Program can be implemented in a cost-effective and efficient manner.« less

Authors:
; ;
Publication Date:
Research Org.:
Westinghouse Savannah River Co., Aiken, SC (United States)
Sponsoring Org.:
USDOE; USDOE, Washington, DC (United States)
OSTI Identifier:
6899288
Report Number(s):
WSRC-MS-92-294; CONF-930702-1
ON: DE93001897
DOE Contract Number:  
AC09-89SR18035
Resource Type:
Conference
Resource Relation:
Conference: Pressure vessel and piping conference, Denver, CO (United States), 25-29 Jul 1993
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; REACTOR COOLING SYSTEMS; SYSTEMS ANALYSIS; SPECIAL PRODUCTION REACTORS; FAILURE MODE ANALYSIS; MAINTENANCE; RADIATION DOSES; REACTOR SAFETY; SAVANNAH RIVER PLANT; SERVICE LIFE; COOLING SYSTEMS; DOSES; LIFETIME; NATIONAL ORGANIZATIONS; PRODUCTION REACTORS; REACTOR COMPONENTS; REACTORS; SAFETY; SYSTEM FAILURE ANALYSIS; US AEC; US DOE; US ERDA; US ORGANIZATIONS; 220900* - Nuclear Reactor Technology- Reactor Safety; 220600 - Nuclear Reactor Technology- Research, Test & Experimental Reactors

Citation Formats

Kao, G C, Daugherty, W L, and Barnes, D M. Priority ranking of safety-related systems for structural enhancement assessment at Savannah River Site. United States: N. p., 1992. Web.
Kao, G C, Daugherty, W L, & Barnes, D M. Priority ranking of safety-related systems for structural enhancement assessment at Savannah River Site. United States.
Kao, G C, Daugherty, W L, and Barnes, D M. 1992. "Priority ranking of safety-related systems for structural enhancement assessment at Savannah River Site". United States. https://www.osti.gov/servlets/purl/6899288.
@article{osti_6899288,
title = {Priority ranking of safety-related systems for structural enhancement assessment at Savannah River Site},
author = {Kao, G C and Daugherty, W L and Barnes, D M},
abstractNote = {In order to extend the service life of safety related structures and systems in a logical manner, a Structural Enhancement Program was initiated to evaluate the structural integrity of eight (8) systems, namely: Cooling Water System, Emergency Cooling System, Moderator Recovery System supplementary Safety System, Water Removal System, Service Raw Water System, Service Clarified Water System, and River Water System. Since the level of importance of each system to reactor operations varies from one system to another, the scope of structural integrity evaluation for each system should be prioritized accordingly. This paper presents the assessment of system priority for structural evaluation based on a ranking methodology and specifies the level of structural evaluation consistent with the established priority. The effort was undertaken by a five-member panel representing four (4) major disciplines, including. structures, reactor engineering/operations, risk management and materials. The above systems were divided into a total of thirty-five (35) subsystem. These subsystems were then ranked with six (6) attributes, namely: Safety Classification, Degradation Mechanisms, Difficulty of Replacement, Failure Mode, Radiation Dose to Workers and Consequence of Failure. Each attribute was assigned a set of consequences or events with corresponding weighting scores. The results of the ranking process yielded two groups of subsystems, categorized as Priority I and II subsystems. The level of structural assessment was then formulated accordingly. The prioritized approach will allow more efficient allocation of resources, so that the Structural Enhancement Program can be implemented in a cost-effective and efficient manner.},
doi = {},
url = {https://www.osti.gov/biblio/6899288}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Sep 01 00:00:00 EDT 1992},
month = {Tue Sep 01 00:00:00 EDT 1992}
}

Conference:
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