A spare parts model with cold stand-by redundancy on system level

K.S. de Smidt-Destombes, N.P. van Elst, A.I. Barros, H. Mulder, J.A.M. Hontelez

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

This paper presents a variant of a spare parts inventory model with cold stand-by redundancy on system level. Redundancy on system level implies that not all systems need to be operational in order to have the whole system operational. The cold stand-by feature implies that only the minimum required systems are operational. In order to determine a cost effective spare parts package such that in a cold stand-by redundancy situation a sufficient number of systems is operational for a specified period we extend the METRIC methodology. To compute the probability that the number of operating systems during the operational period is sufficient, we present both an exact, but time-consuming method, and a fast approximation method based on fitting distributions on the first two moments. This approximation method shows very small differences when compared to the exact method. Finally, we compare both methods to a simulation model in order to test the validity and impact of our modelling. © 2010 Elsevier Ltd. All rights reserved.
Original languageEnglish
Pages (from-to)985-991
JournalComputers and Operations Research
Volume38
Issue number7
DOIs
Publication statusPublished - 2011

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Spare Parts
Redundancy
Approximation Methods
Model
Sufficient
Imply
Exact Method
Inventory Model
Operating Systems
Spare parts
Costs
Simulation Model
Moment
Methodology
Modeling

Cite this

de Smidt-Destombes, K. S., van Elst, N. P., Barros, A. I., Mulder, H., & Hontelez, J. A. M. (2011). A spare parts model with cold stand-by redundancy on system level. Computers and Operations Research, 38(7), 985-991. https://doi.org/10.1016/j.cor.2010.09.006
de Smidt-Destombes, K.S. ; van Elst, N.P. ; Barros, A.I. ; Mulder, H. ; Hontelez, J.A.M. / A spare parts model with cold stand-by redundancy on system level. In: Computers and Operations Research. 2011 ; Vol. 38, No. 7. pp. 985-991.
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de Smidt-Destombes, KS, van Elst, NP, Barros, AI, Mulder, H & Hontelez, JAM 2011, 'A spare parts model with cold stand-by redundancy on system level' Computers and Operations Research, vol. 38, no. 7, pp. 985-991. https://doi.org/10.1016/j.cor.2010.09.006

A spare parts model with cold stand-by redundancy on system level. / de Smidt-Destombes, K.S.; van Elst, N.P.; Barros, A.I.; Mulder, H.; Hontelez, J.A.M.

In: Computers and Operations Research, Vol. 38, No. 7, 2011, p. 985-991.

Research output: Contribution to JournalArticleAcademicpeer-review

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AB - This paper presents a variant of a spare parts inventory model with cold stand-by redundancy on system level. Redundancy on system level implies that not all systems need to be operational in order to have the whole system operational. The cold stand-by feature implies that only the minimum required systems are operational. In order to determine a cost effective spare parts package such that in a cold stand-by redundancy situation a sufficient number of systems is operational for a specified period we extend the METRIC methodology. To compute the probability that the number of operating systems during the operational period is sufficient, we present both an exact, but time-consuming method, and a fast approximation method based on fitting distributions on the first two moments. This approximation method shows very small differences when compared to the exact method. Finally, we compare both methods to a simulation model in order to test the validity and impact of our modelling. © 2010 Elsevier Ltd. All rights reserved.

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de Smidt-Destombes KS, van Elst NP, Barros AI, Mulder H, Hontelez JAM. A spare parts model with cold stand-by redundancy on system level. Computers and Operations Research. 2011;38(7):985-991. https://doi.org/10.1016/j.cor.2010.09.006