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NEA-0692 FRELIB.

FRELIB, Failure Reliability Index Calculation

NAME OR DESIGNATION OF PROGRAM, COMPUTER, DESCRIPTION OF PROBLEM OR FUNCTION, METHOD OF SOLUTION, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, TYPICAL RUNNING TIME, UNUSUAL FEATURES OF THE PROGRAM, RELATED AND AUXILIARY PROGRAMS, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED, OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHOR, MATERIAL, CATEGORIES
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1. NAME OR DESIGNATION OF PROGRAM:  FRELIB.
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2. COMPUTERS
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Program name Package id Status Status date
FRELIB NEA-0692/01 Tested 16-AUG-1984

Machines used:

Package ID Orig. computer Test computer
NEA-0692/01 IBM 370 series IBM 3081
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3. DESCRIPTION OF PROBLEM OR FUNCTION

Calculation of the reliability  index given the failure boundary. A linearization point (design point) is found on the failure boundary for a stationary reliability index (min) and a stationary failure probability density function along the failure boundary, provided that the basic variables are normally distributed.
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4. METHOD OF SOLUTION

Iteration along the failure boundary which must be specified - together with its partial derivatives with respect to the basic variables - by the user in a subroutine FSUR.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

No distribution information included (first-order-second-moment-method). 20 basic variables (could be extended).
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6. TYPICAL RUNNING TIME:  0.2 min. (5 iterations).
NEA-0692/01
NEA-DB executed the test case on IBM 3081 in 0.07 sec.
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7. UNUSUAL FEATURES OF THE PROGRAM:  Inclusion of correlated basic variables.
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8. RELATED AND AUXILIARY PROGRAMS:
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9. STATUS
Package ID Status date Status
NEA-0692/01 16-AUG-1984 Tested at NEADB
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10. REFERENCES:
NEA-0692/01, included references:
- D.B. Parkinson:
  Computer Solution for the Reliability Index.
  Eng. Struct. (January 1980), Vol. 2, pp. 57-62.
- Program FRELIB to Compute Reliability Index and Design Values.
  (Paper).
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11. MACHINE REQUIREMENTS

The program can be easily adapted to a machine of any size.
NEA-0692/01
68k bytes of main storage on IBM 3081.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NEA-0692/01 FORTRAN-IV
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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:  DOS/VS.
NEA-0692/01
MVS-SP (IBM 3081).
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:
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15. NAME AND ESTABLISHMENT OF AUTHOR

          D. B. Parkinson, University of Liverpool
          adapted to GLLOYD-requirements by:
          C. Oestergaard
          Germanischer Lloyd
          Vorsetzen 32
          P.O. Box 11 16 06
          2000 Hamburg 11
          Germany
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16. MATERIAL AVAILABLE
NEA-0692/01
File name File description Records
NEA0692_01.003 FRELIB INFORMATION FILE 43
NEA0692_01.004 FRELIB SOURCE PROGRAM (FORTRAN-4) 241
NEA0692_01.005 FRELIB JCL FOR TEST CASE 52
NEA0692_01.006 FRELIB TEST CASE INPUT DATA (UNIT 1) 13
NEA0692_01.007 FRELIB TEST CASE OUTPUT (UNIT 3) 32
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17. CATEGORIES
  • G. Radiological Safety, Hazard and Accident Analysis
  • P. General Mathematical and Computing System Routines

Keywords: failures, reliability, system failure analysis.