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IAEA1174 PSAPACK.

PSAPACK, Probabilistic Safety Analysis with Fault Event Trees

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1. NAME OR DESIGNATION OF PROGRAM:  PSAPACK.
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2. COMPUTERS
To submit a request, click below on the link of the version you wish to order. Only liaison officers are authorised to submit online requests. Rules for requesters are available here.
Program name Package id Status Status date
PSAPACK-4.2 IAEA1174/03 Tested 11-OCT-1997

Machines used:

Package ID Orig. computer Test computer
IAEA1174/03 IBM PC PC Pentium 166
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3. DESCRIPTION OF PROGRAM OR FUNCTION

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.
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4. METHOD OF SOLUTION:
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

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 of SAMPLE code is used in this module for uncertainty analysis.
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6. TYPICAL RUNNING TIME:
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7. UNUSUAL FEATURES OF THE PROGRAM:
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8. RELATED AND AUXILIARY PROGRAMS

A reliability data base (RDB) module is used for the management of reliability data. This module can create a data base retrieving data from a RDB compiled by the IAEA from 21 sources and which contains about 1000 records. All components and failure modes normally considered in PSA are included in the RDB. Reliability data can be screened and modified by the user.
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9. STATUS
Package ID Status date Status
IAEA1174/03 11-OCT-1997 Tested at NEADB
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10. REFERENCES:
IAEA1174/03, included references:
- 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).
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11. MACHINE REQUIREMENTS

The hardware requirements include: IBM PC/XT, AT or compatible with at least 512Kb memory, 1 diskette drive, 1
hard disk 10 Mb drive and a printer. A monochrome or color graphics  card with a monochrome or color graphics display should be available if the fault tree graphics editor is used.
3.0 Mb space are occupied on a hard disk by the PSAPACK after its installation. This is a hard disk version of the package. It consists of 4 program diskettes (double sided, double density) 1
system diskette, 1 diskette with the compressed version of the IAEA  reliability data base and 1 diskette with the sample problem.
IAEA1174/03
The executable was run by the NEA Data Bank on a DELL Optiplex GXi/166MHz PC with 64 MB of RAM.
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12. PROGRAMMING LANGUAGE(S) USED
No specified programming language
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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:
IAEA1174/03
The executable ran at the NEA Data Bank under Windows NT 4.0.
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

A DOS utilities module is used for file management functions. It covers practically all requirements.
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15. NAME AND ESTABLISHMENT OF AUTHORS

          A. BOIADJIEV, H. VALLERGA
          International Atomic Energy Agency
          Division of Nuclear Safety
          Reliability & Risk Assessment
          P.O. Box 100
          A-1400 VIENNA, Austria
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16. MATERIAL AVAILABLE
IAEA1174/03
File name File description Records
IAEA1174_03.001 Information file 120
IAEA1174_03.002 MASTER disk files 0
IAEA1174_03.003 Disk 1 files 0
IAEA1174_03.004 Disk 2 files 0
IAEA1174_03.005 Disk 3 files 0
IAEA1174_03.006 DOS file-names 5
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17. CATEGORIES
  • G. Radiological Safety, Hazard and Accident Analysis
  • P. General Mathematical and Computing System Routines

Keywords: event trees, fault tree analysis, probabilistic sys assessment, reactor safety.