Maintenance of Light Standards, a Case-Study
1996-11-08
Research Paper
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This paper discusses several strategies for the maintenance of light standards, where each light standard consists of n independent and identical lamps screwed on a chandelier. The lamps are subject to stochastic failures, and must be correctively replaced if the number of failed lamps reaches a prespecified number m; a norm that is set by the local management to guarantee a minimum luminance. As lamps have an increasing failure rate, and there is a fixed cost of hoisting the chandelier, we propose various variants of the m-failure group replacement rule which have in particular an age-criterion to indicate which of the non-failed lamps must be preventively replaced at the time that the chandelier is lowered for a corrective lamp replacement; we show how the optimal threshold age can be determined. It appears that this modification reduces the long run average maintenance cost of the Europe Combined Terminals with approximately 8.3%.
- multiple components
- (modified) m-failure group replacement
- (modified) secant algorithm
- energy consumption
- group maintainance
- hot and cold standbuy
- k-out-of-n system
- lamp replacement
- light standards
- replacement
- group
- failure
- component
- maintenance
- m-failure
- light standards
- number
- threshold
- light
- chandelier
- function
- threshold age
- replacement rule
- energy cost
- system
- standard
- maintenance cost
- energy
- block replacement rule
