Reliability analysis of the INEL power system using fault trees and the IRRAS-PC computer code

Conference · Fri Jan 01 04:00:00 EST 1988

OSTI ID:5196026

Galyean, W J; Close, J A; Fowler, R D

The Integrated Reliability and Risk Analysis System Personal Computer Version 2.0 computer code was used in a reliability analysis of the INEL Site Power System. This code was developed at the Idaho National Engineering Laboratory (INEL) as a state-of-the-art microcomputer-based probabilistic risk assessment (PRA) model and as an analysis tool for the U.S. Nuclear Regulatory Commission. IRRAS provided an efficient means for the development of a detailed and accurate fault tree model to: (a) identify the dominant causes of power outages on the site, (b) compare the performance of the system using both site-specific data and generic data, and (c) perform a sensitivity study to determine the effects of equipment unavailability caused by the ongoing preventative maintenance (PM) program. Although the final fault tree model exceeded the quantification capabilities of IRRAS, necessitating the use of the mainframe code SETS, IRRAS proved to be a valuable tool for both development of the fault tree model and preparation of the different inputs required to perform the analysis. The evaluation was performed to gain the understanding necessary to determine whether the system, under INEL Power Management control, requires improvement of its reliability. This paper provides a detailed discussion of the methodology used for development of the fault tree model and evaluation of the reliability of the INEL Site Power System.

• Research Organization: EG and G Idaho, Inc., Idaho Falls (USA)
• DOE Contract Number: AC07-76ID01570
• OSTI ID: 5196026
• Report Number(s): EGG-M-40987; CONF-880692-1; ON: DE88007715
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200104 -- Fossil-Fueled Power Plants-- Components
22 GENERAL STUDIES OF NUCLEAR REACTORS
220200* -- Nuclear Reactor Technology-- Components & Accessories
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
COMPUTER CODES
COMPUTERS
DIGITAL COMPUTERS
ELECTRIC POWER INDUSTRY
ENERGY SYSTEMS
FAULT TREE ANALYSIS
I CODES
IDAHO NATIONAL ENGINEERING LABORATORY
INDUSTRY
MAINTENANCE
NATIONAL ORGANIZATIONS
NUCLEAR FACILITIES
NUCLEAR POWER PLANTS
OUTAGES
PERSONAL COMPUTERS
POWER PLANTS
POWER SYSTEMS
RELIABILITY
RISK ASSESSMENT
SENSITIVITY ANALYSIS
SYSTEM FAILURE ANALYSIS
SYSTEMS ANALYSIS
THERMAL POWER PLANTS
US DOE
US ERDA
US ORGANIZATIONS