RSICC CODE PACKAGE PSR-613

 

 

1.   NAME AND TITLE

     PSAPACK-4.2: Probabilistic Safety Analysis with Fault Event Trees.

 

2.   CONTRIBUTORS

International Atomic Energy Agency (IAEA), Division of Nuclear Safety, Reliability & Risk Assessment, A-1400 VIENNA, Austria, through the OECD Nuclear Energy Agency Data Bank, Issy-les-Moulineaux, France.

 

3.   CODING LANGUAGE AND COMPUTER

No specified programming language. (P613PCX8600) (NEADB ID: IAEA1174/03).

 

4.   NATURE OF PROBLEM SOLVED

An integrated fault-event tree software package PSAPACK (Probabilistic Safety Analysis PACKage) was developed for level-1 PSA using personal computers (PC). IT is a menu driven interactive modular system which permits different choices, depending on the user's purposes and needs.

The event tree development module is capable of developing the logic accident sequences based on the user's specified relations between event tree headings. Identification of success sequences and core damage sequences is done automatically by the code based on the success function input by the user. It links minimum cut sets (MCS) from system fault trees and performs the Boolean reduction. It can also retrieve data from the reliability data base to perform the quantification of accident sequences.

 

5.   METHOD OF SOLUTION

The fault tree module contains full screen graphics and text editors. It is possible to transfer the tree structure from \ graphics to text format and vice-versa. Fault tree reduction and minimum cut set determination is performed by well known codes like ALLCUTS, MOCUS of FTAP. Convenient interfaces have been developed for input data preparation and for storage of the results in the MCS library. The MCS module can be used for the MCS screening and quantification. PC version SAMPLE code is used in this module for uncertainty analysis.

 

6.   RESTRICTIONS OR LIMITATIONS

None noted.

 

7.   TYPICAL RUNNING TIME

CPU time requirements are very problem-dependent. 

 

8.   COMPUTER HARDWARE REQUIREMENTS

Windows systems.

 

9.   COMPUTER SOFTWARE REQUIREMENTS

The executable ran at the NEA Data Bank under Windows NT 4.0. Will only run on 32 Bit systems.

 

10.  REFERENCES

10.a included in distribution files and in P613.pdf:

G. Caruso et al: PSAPACK 4.2 A Code for Probabilistic Safety Assessment Level 1 User's Manual Computer Manual Series No.6, IAEA Vienna (1995).

11.  CONTENTS OF CODE PACKAGE

The package is transmitted on one CD with the reference cited above, and a self-extracting zip file containing executables and test input for supported systems.

 

12.  DATE OF ABSTRACT

October 2015

 

      KEYWORDS:   REACTOR SAFETY