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Using QRA to Make Maintenance Trade-Off Decisions

[+] Author Affiliations
John A. Farquharson

ABSG Consulting Inc., Knoxville, TN

Francois Choquette

Air Canada Technical Services, Montreal, Quebec, Canada

Paper No. PVP2002-1383, pp. 129-134; 6 pages
  • ASME 2002 Pressure Vessels and Piping Conference
  • Selected Topics on Aging Management, Reliability, Safety and License Renewal
  • Vancouver, BC, Canada, August 5–9, 2002
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4655-5
  • Copyright © 2002 by ASME


This paper discusses the concept of using quantitative risk assessment (QRA) techniques to make specific decisions regarding competing risks associated with specific maintenance policies. This paper is based on a project performed for a major international airline to assess the risk trade-off between a potential catastrophic event occurring during a maintenance procedure versus the possibility of inadvertently leaving a safety device in place following plane takeoff. The paper demonstrates the use of simplified event trees, human reliability analysis, and risk-based decision making.

Copyright © 2002 by ASME
Topics: Maintenance



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