PROFAT: A user friendly system for probabilistic fault tree analysis

A methodology has been developed to conduct probabilistic fault tree analysis during risk assessment in chemical process industries. The methodology is based on a system involving (a) development of fault tree, (b) determination of minimum cutsets or shortest pathways leading from initiating events (malfunctioning) to the top event (the major accident), (c) probability analysis, and (d) working out improvement index values. To this end techniques of Boolean algebra, structure moduling, analytical method of cutsets finding (top‐to‐bottom algorithm), Monte‐Carlo simulation, optimization technique and fuzzy probability set have been used.

[1]  Antoine Rauzy,et al.  New algorithms for fault trees analysis , 1993 .

[2]  Soon Heung Chang,et al.  ANALYTICAL AND NUMERICAL UNAVAILABILITY ANALYSIS OF REDUNDANT-SYSTEMS WITH DEPENDENT HUMAN ERROR , 1985 .

[3]  Mark A. Cunningham,et al.  Probabilistic safety assessment development in the United States 1972–1990 , 1993 .

[4]  Gary J. Powers,et al.  Update of Lapp-Powers Fault-Tree Synthesis Algorithm , 1979, IEEE Transactions on Reliability.

[5]  G. W. Hannaman,et al.  Probabilistic risk assessment in the CPI , 1987 .

[6]  Richard W. Prugh,et al.  Computer-aided HAZOP and fault tree analysis , 1992 .

[7]  Ioannis A. Papazoglou,et al.  Probabilistic safety analysis in chemical installations , 1992 .

[8]  Leonidas Camarinopoulos,et al.  An improved top-down algorithm combined with modularization as a highly efficient method for fault tree analysis , 1985 .

[9]  Takehisa Kohda,et al.  On digraphs, fault trees, and cut sets , 1988 .

[10]  J.R. Taylor,et al.  An Algorithm For Fault-Tree Construction , 1982, IEEE Transactions on Reliability.

[11]  Javier Yllera,et al.  SAFETY ANALYSIS FOR THE AMMONIA-AIR MIXING SYSTEM OF A PLANT FOR PRODUCTION OF NITRIC ACID , 1982 .

[12]  Soon Heung Chang,et al.  THE MONTE-CARLO METHOD WITHOUT SORTING FOR UNCERTAINTY PROPAGATION ANALYSIS IN PRA , 1985 .

[13]  Hideo Tanaka,et al.  Fault-Tree Analysis by Fuzzy Probability , 1983 .

[14]  Faisal Khan,et al.  Techniques and methodologies for risk analysis in chemical process industries , 1998 .

[15]  Andre Bossche.  Computer-aided fault tree synthesis I (system modeling and causal trees) , 1991 .

[16]  L. C. Doelp,et al.  Quantitative fault tree analysis: Gate‐by‐gate method , 1984 .

[17]  Hideo Tanaka,et al.  Fault-Tree Analysis by Fuzzy Probability , 1981, IEEE Transactions on Reliability.