Community Research and Development Information Service - CORDIS

Abstract

The interactive program package SALP-PC for fault tree analysis, developed on an Olivetti M24 personal computer (IBM compatible), is written in Fortran-77 to guarantee the maximum portability. It is composed of five processors, implementing the different phases of the fault tree analysis procedure. Allowed logical operators are AND, OR, NOT, K/N, XOR and INH. Boundary conditions can also be defined to obtain fault trees conditioned to the state of one or more components. The possibility to define incompatible events is also allowed. An extensive check on input data is performed. At each step of the analysis the user can restart, with modified input parameters, without having to repeat the previous steps. The minimal cut sets (MCSs) are obtained by reducing the tree according to the bottom-up technique. To save computer time the approach of determining only the most significant MCSs has been adopted, which implies the assessment of an estimate of the contribution of the non significant MCSs to the system failure. Other methods have been implemented to reduce both computer time and memory space as, for instance, the modularisation and the application of the minimization procedure only when strictly necessary. This paper contains the description of the main characteristics of the program, the analysis procedure on which it is based and the developments being carried out.

Additional information

Authors: CONTINI S, JRC-ISPRA;POUCET A JRC-ISPRA, JRC-ISPRA
Bibliographic Reference: TECHNICAL COMMITTEE ON "THE USE OF PROBABILISTIC SAFETY ASSESSMENT ON PERSONAL COMPUTERS FOR OPERATIONAL SAFETY MANAGEMENT", WIEN (AUSTRIA), MARCH 16-20, 1987 WRITE TO CEC LUXEMBOURG, DG XIII/A2, POB 1907 MENTIONING PAPER E 33342 ORA
Availability: Can be ordered online
Record Number: 1989126015100 / Last updated on: 1989-03-01
Category: PUBLICATION
Available languages: en