Sessions: 12C, Wednesday, 27 January 2010, 1545-1745 Moderator: Harold E. Ascher, Harold E. Ascher & Associates
This sessions contains several papers that explore modeling strategies and issues for complex systems. Common cause failures and dependent systems are analyzed in this session.
Papers: 12C1 [0010] APPLYING BETA AND MESH MODELS FOR COMMON CAUSE FAILURE TO TRIPLEX SYSTEMS by Julia V. Bukowski, Ph.D., Villanova University
International standards for safety system evaluation require that common cause failures be addressed and provides a methodology using the β factor which was originally designed for use in duplex systems. This paper shows how β must be modified to be applicable to triplex systems.
12C2 [0072] RELIABILITY ANALYSIS OF MISSIONS WITH COOPERATING PLATFORMS by Professor John Andrews, Nottingham University, Rasa Remenyte-Prescott, Ph.D., Darren Prescott, Loughborough University
This paper describes how to calculate a mission reliability when platforms work together to achieve an objective. This type of mission is typical of military applications but is also relevant to applications such as search and rescue. Each platform has its own mission to perform which is made up of phases (tasks) which it must accomplish for its own mission. Some of these phases will contribute to the success of the whole, integrated, mission.
12C3 [0004] EFFICIENT ANALYSIS OF IMPERFECT COVERAGE SYSTEMS WITH FUNCTIONAL DEPENDENCE by Liudong Xing, Ph.D., Univ. of Massachusetts Dartmouth, Joanne Bechta Dugan, Pd.D., University of Virginia, and Brock Morrissette, Lockheed Martin
This paper proposes a combinatorial approach to the reliability analysis of imperfect fault coverage systems subject to functional dependence. As compared to traditional approaches based on Markov models, the proposed method can offer exact and computationally efficient solution to large-scale system analysis, and can be applicable to analyzing systems with general component failure distributions. Several case studies are presented to illustrate the basics and advantages of the proposed method.
12C4 [0129] THE APPLICATION OF CREAM BASED ON HAZOP ANALYSIS IN USING PROCESS OF SYSTEM by Wei Wang and Tingdi Zhao, Ph.D., Beihang University
According to the deficiency of Cognitive Reliability and Error Analysis Method CREAM in using process of weapon, this paper provides an improved CREAM based the HAZOP. Using the improved method, the whole event sequences which can be used for the retrospective and predictive analysis in CREAM can be gained. An example of the diesel engine starting underwater is discussed.
Reliability Models for Complex Systems
Sessions: 12C, Wednesday, 27 January 2010, 1545-1745
Moderator: Harold E. Ascher, Harold E. Ascher & Associates
This sessions contains several papers that explore modeling strategies and issues for complex systems. Common cause failures and dependent systems are analyzed in this session.
Papers:
12C1 [0010] APPLYING BETA AND MESH MODELS FOR COMMON CAUSE FAILURE TO TRIPLEX SYSTEMS by Julia V. Bukowski, Ph.D., Villanova University
International standards for safety system evaluation require that common cause failures be addressed and provides a methodology using the β factor which was originally designed for use in duplex systems. This paper shows how β must be modified to be applicable to triplex systems.
12C2 [0072] RELIABILITY ANALYSIS OF MISSIONS WITH COOPERATING PLATFORMS
by Professor John Andrews, Nottingham University, Rasa Remenyte-Prescott, Ph.D., Darren Prescott, Loughborough University
This paper describes how to calculate a mission reliability when platforms work together to achieve an objective. This type of mission is typical of military applications but is also relevant to applications such as search and rescue. Each platform has its own mission to perform which is made up of phases (tasks) which it must accomplish for its own mission. Some of these phases will contribute to the success of the whole, integrated, mission.
12C3 [0004] EFFICIENT ANALYSIS OF IMPERFECT COVERAGE SYSTEMS WITH FUNCTIONAL DEPENDENCE by Liudong Xing, Ph.D., Univ. of Massachusetts Dartmouth, Joanne Bechta Dugan, Pd.D., University of Virginia, and Brock Morrissette, Lockheed Martin
This paper proposes a combinatorial approach to the reliability analysis of imperfect fault coverage systems subject to functional dependence. As compared to traditional approaches based on Markov models, the proposed method can offer exact and computationally efficient solution to large-scale system analysis, and can be applicable to analyzing systems with general component failure distributions. Several case studies are presented to illustrate the basics and advantages of the proposed method.
12C4 [0129] THE APPLICATION OF CREAM BASED ON HAZOP ANALYSIS IN USING PROCESS OF SYSTEM by Wei Wang and Tingdi Zhao, Ph.D., Beihang University
According to the deficiency of Cognitive Reliability and Error Analysis Method CREAM in using process of weapon, this paper provides an improved CREAM based the HAZOP. Using the improved method, the whole event sequences which can be used for the retrospective and predictive analysis in CREAM can be gained. An example of the diesel engine starting underwater is discussed.