NEA-1076 AVACOM-ETARP.

AVACOM-ETAP, Availability and Element Transient and Asymptotic Repair Process

NAME OR DESIGNATION OF PROGRAM, COMPUTER, DESCRIPTION OF PROGRAM 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 AUTHORS, MATERIAL, CATEGORIES

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1. NAME OR DESIGNATION OF PROGRAM: AVACOM-ETARP.

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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
AVACOM-ETARP	NEA-1076/01	Tested	20-MAR-1987

Machines used:

Package ID	Orig. computer	Test computer
NEA-1076/01	AMDAHL 470/V8	IBM 3084

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3. DESCRIPTION OF PROGRAM OR FUNCTION

In reliability theory, the term "availability" generally indicates the probability of the proper functioning of a system or of a component at a general time t when various possible replacement or repair policies are considered. AVACOM-ETARP calculates the transient and asymptotic availability of a component subject to a repair process with generic failure and repair laws. Five of the most commonly used distributions have been included as options: exponential, normal; lognormal; gamma; Weibull.

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4. METHOD OF SOLUTION

The used mathematical model considers the failure-restoration process as a 2-state non-homogeneous Markov process containing the homogeneous Markov one as a particular case.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM:

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6. TYPICAL RUNNING TIME:

NEA-1076/01

NEA-DB executed the test case included in this package on an IBM 3084 computer in 15.25 seconds of CPU time.

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7. UNUSUAL FEATURES OF THE PROGRAM:

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8. RELATED AND AUXILIARY PROGRAMS:

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9. STATUS

Package ID	Status date	Status
NEA-1076/01	20-MAR-1987	Tested at NEADB

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10. REFERENCES

- S. Garibba, G. Reina, G. Volta:
  "Repair Processes: Fundamentals and Computation"
  EUR 5232e, 1974
- S. Garibba, G. Reina, G. Volta:
  "Availability of Repairable Units when Failure and Restoration
  Rates Age in Real Time"
  IEEE Trans. on Reliability, Vol. R-25, no 2, June 1976

NEA-1076/01, included references:

- G. Reina:
  AVACOM-ETARP: Availability Computation, Element Transient and
  Asymptotic Repair Process.
  Technical Note No.I.06.01.82.05 (Jan.1982)

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11. MACHINE REQUIREMENTS:

NEA-1076/01

To execute the test case on an IBM 3084, 316K bytes of main storage are required.
required

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
NEA-1076/01	FORTRAN-IV

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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:

NEA-1076/01

VS2 03.8 (IBM 3084).

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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

The program is organised in such a way that it can be used as a sub- program in general reliability codes.

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15. NAME AND ESTABLISHMENT OF AUTHORS

   G. Reina:
   Commission of the European Communities
   Joint Research Centre
   ISPRA Establishment, Italy

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16. MATERIAL AVAILABLE

NEA-1076/01

File name	File description	Records
NEA1076_01.001	information file	49
NEA1076_01.002	AVACOM-ETARP Source Program	408
NEA1076_01.003	AVACOM-ETARP Test Case Input Data	6
NEA1076_01.004	AVACOM-ETARP Test Case Printed Output	601

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17. CATEGORIES

G. Radiological Safety, Hazard and Accident Analysis
P. General Mathematical and Computing System Routines

Keywords: failures, reliability.