Abstract
In this paper, comparative analysis between the profits of three reliability models of a building cable manufacturing plant is carried out. To facilitate the analysis, real maintenance data of the plant are collected. Three case specific reliability models of the plant are developed. Semi-Markov processes and regenerative point techniques are used to estimate optimized reliability indices of the plant; such as; mean time to plant failure, plant availability, expected number of plant repairs, expected busy period of the repairman and profit incurred to the plant. Comparison between the profits is demonstrated through graphical analysis.
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Abbreviations
- pdf:
-
Probability density function
- cdf:
-
Cumulative distribution function
- mipm:
-
Minor preventive maintenance
- mapm:
-
Major preventive maintenance
- wrt:
-
With respect to
- Si :
-
State i
- λ A :
-
Estimated failure rate for subsystem-A
- λ B :
-
Estimated failure rate for subsystem-B
- λ C :
-
Estimated failure rate for subsystem-C
- λ D :
-
Estimated failure rate for subsystem-D
- λ E :
-
Estimated failure rate for subsystem-E
- α A :
-
Estimated rate of requirement of mipm for subsystem-A
- β A :
-
Estimated rate of requirement of mapm for subsystem-A
- ν :
-
Estimated rate of cooling for subsystem-A
- γ :
-
Estimated rate of transition from operating state to rest state
- σ :
-
Estimated rate of transition from rest state to operating state
- gA(t):
-
Pdf of repair times for subsystem-A
- gB(t):
-
Pdf of repair times for subsystem-B
- gC(t):
-
Pdf of repair times for subsystem-C
- gD(t):
-
Pdf of repair times for subsystem-D
- gE(t):
-
Pdf of repair times for subsystem-E
- hA(t):
-
Pdf of mipm times for subsystem-A
- fA(t):
-
Pdf of mapm times for subsystem-A
- M0i :
-
Mean time to plant failure for Model-i
- A0i :
-
Plant availability for Model-i
- R0i :
-
Expected number of plant repairs for Model-i
- B0i :
-
Expected busy period of the repairman for Model-i
- P0i :
-
Profit incurred to the plant for Model-i
- C0 :
-
Revenue per unit up time
- C1 :
-
Cost per unit time for which the repairman is busy
- C2 :
-
Cost per unit repair
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Taj, S.Z., Rizwan, S.M., Alkali, B.M. et al. Three reliability models of a building cable manufacturing plant: a comparative analysis. Int J Syst Assur Eng Manag 11 (Suppl 2), 239–246 (2020). https://doi.org/10.1007/s13198-020-01012-8
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DOI: https://doi.org/10.1007/s13198-020-01012-8