Isis: An expert system for risk-based inservice inspection assessment
- Yankee Nuclear Services Division, Bolton, MA (United States)
The ASME Section XI Working Group on Implementation of Risk-Based (RB) Examination produced a code case to define risk-based selection rules that could be used for In-Service Inspection (ISI) of Class 1, 2 and 3 piping. To provide guidelines for practical implementation of the code case, EPRI sponsored work to develop evaluation procedures and criteria. The approach focuses inspections on locations which are selected based upon an explicit consideration of experienced degradation mechanisms and potential consequences. Software has been developed to execute and document this approach. Data and expert system modules address system operating characteristics, design attributes, the potential for damage mechanisms and the impact of component failures (i.e., loss of pressure boundary integrity). These modules are integrated in a stand alone software package. In addition, because the system is microcomputer based, the software is not cumbersome or costly to deploy. The goal of this effort was to develop a tool that will accomplish two tasks. That is, (1) Reduce the cost of the Risk Based Inservice Inspection (RBISI) evaluation effort by increasing the productivity of the BISI analyst, and (2) Provide a structured analytical and documentation package that lends itself to increases in consistency within an individual plant application, as well as across the industry.
- OSTI ID:
- 404250
- Report Number(s):
- CONF-960706-; ISBN 0-7918-1786-5; TRN: 97:000411
- Resource Relation:
- Conference: American Society of Mechanical Engineers (ASME) pressure vessels and piping conference, Montreal (Canada), 21-26 Jul 1996; Other Information: PBD: 1996; Related Information: Is Part Of Pressure vessels and piping codes and standards: Volume 2. PVP-Volume 339; Esselman, T.C. [ed.] [Altran Corp., Boston, MA (United States)]; Balkey, K. [ed.] [Westinghouse Electric Corp., Pittsburgh, PA (United States)]; Chao, K.K.N. [ed.] [Consumers Power Co., Jackson, MI (United States)]; Gosselin, S. [ed.] [Electric Power Research Institute, Charlotte, NC (United States)]; Hollinger, G. [ed.] [Babcock and Wilcox, Barberton, OH (United States)]; Lubin, B.T. [ed.] [ABB Combustion Engineering, Windsor, CT (United States)]; Mohktarain, K. [ed.] [CB and I Technical Services, Plainfield, IL (United States)]; O`Donnell, W. [ed.] [O`Donnell Consulting Engineers, Inc., Pittsburgh, PA (United States)]; Rao, K.R. [ed.] [Entergy Operations, Inc, Jackson, MI (United States)]; PB: 225 p.
- Country of Publication:
- United States
- Language:
- English
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