Smart Maintenance via Dynamic Fault Tree Analysis: A Case Study on Singapore MRT System

Analytical Tools, Like Fault Tree Analysis, Have A Proven Track Record In The Aviation And Nuclear Industries. A Positive Tree Is Used To Insure That A Complex Engineered System Operates Correctly. A Negative Tree (Or Fault Tree) Is Used To Investigate Failures Of Complex Engineered Systems. Boeings Use Of Fault Tree Analysis To Investigate The Apollo Launch Pad Fire In 1967 Brought National Attention To The Technique. The 2002 Edition Of Nfpa 921, Guide For Fire And Explosion Investigations, Contains A New Chapter Entitled Failure Analysis And Analytical Tools. That Chapter Addresses Fault Tree Analysis With Respect To Fire And Explosion Investigation. This Paper Will Review The Fundamentals Of Fault Tree Analysis, List Recent Peer Reviewed Papers About The Forensic Engineering Use Of Fault Tree Analysis, Present A Relevant Forensic Engineering Case Study, And Conclude With The Results Of A Recent University Study On The Subject.

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Accelerating Dynamic Fault Tree Analysis Based on Stochastic Logic Utilizing GPGPUs

2016 24th Euromicro International Conference on Parallel, Distributed, and Network-Based Processing (PDP) ◽

10.1109/pdp.2016.130 ◽

2016 ◽

Author(s):

Elham Cheshmikhani ◽

Hamid R. Zarandi

Keyword(s):

Fault Tree ◽

Fault Tree Analysis ◽

Tree Analysis ◽

Dynamic Fault Tree

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RELIABILITY ASSESSMENT OF SAFETY INSTRUMENTED SYSTEMS IN THE OIL AND GAS INDUSTRY: A PRACTICAL APPROACH AND A CASE STUDY

International Journal of Reliability Quality and Safety Engineering ◽

10.1142/s0218539309003356 ◽

2009 ◽

Vol 16 (02) ◽

pp. 187-212 ◽

Cited By ~ 11

Author(s):

MARY ANN LUNDTEIGEN ◽

MARVIN RAUSAND

Keyword(s):

Oil And Gas ◽

Fault Tree ◽

Reliability Assessment ◽

Fault Tree Analysis ◽

Practical Approach ◽

Suggested Approach ◽

Tree Analysis ◽

Common Cause ◽

Common Cause Failures

This article presents a practical approach to reliability assessment of a complex safety instrumented system that is susceptible to common cause failures. The approach is based on fault tree analysis where the common cause failures are included by post-processing the minimal cut sets. The approach is illustrated by a case study of a safety instrumented function of a workover control system that is used during maintenance interventions into subsea oil and gas wells. The case study shows that the approach is well suited for identifying potential failures in complex systems and for including design engineers in the verification of the reliability analyses. Unlike many software tools for fault tree analysis, the approach gives conservative estimates for reliability. The suggested approach represents a useful extension to current reliability analysis methods.

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Analysis on Dynamic Fault Tree Based on Fuzzy Set

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.110-116.2416 ◽

2011 ◽

Vol 110-116 ◽

pp. 2416-2420 ◽

Cited By ~ 4

Author(s):

Li Ping Yang

Keyword(s):

Fuzzy Set ◽

Fault Tree ◽

Dynamic Logic ◽

Fault Tree Analysis ◽

Logic Gates ◽

Minimum Cut ◽

Tree Analysis ◽

Dynamic Fault Tree ◽

Large Complex System ◽

Cut Set

In case of fault tree analysis of large complex system, the probability of bottom event in dynamic fault tree is uncertain in some cases. To address the problem, the paper presented a dynamic fault tree analysis method based on fuzzy set computation. The method separates logic attributes and timing attributes of dynamic logic gates. It can convert dynamic fault tree into static fault tree not considering timing constraints and obtain minimum cut set of static fuzzy fault tree with set operations, then the concept of minimum cut set is extended to dynamical minimum cut sequence. Thus, the dynamic fault tree was analyzed in both qualitative and quantitative aspects, which solve the problem that it is difficult to assign value of event probability in previously process.

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