last modified: 16-AUG-1984 | catalog | categories | new | search |

NEA-0692 FRELIB.

FRELIB, Failure Reliability Index Calculation

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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.