Definition
Maintenance cost as a percentage of RAV relates total maintenance expenditure to the replacement asset value (RAV) (what it would cost to replace the assets being maintained) expressing spending as a ratio rather than an absolute figure. This makes it comparable across sites, plants, or asset classes of very different scale, unlike raw maintenance cost alone.
Key facts
- Expressed as a ratio (maintenance cost ÷ replacement asset value), not an absolute expenditure figure.
- Enables benchmarking across plants or sites of different size, where absolute cost comparisons alone would be misleading.
- Industry-typical ranges exist as a reference, but appropriate values vary significantly with asset age, criticality mix, and strategy.
- A very low percentage relative to industry norms can signal under-maintenance as easily as it can signal efficiency.
How is Maintenance cost as percentage of RAV calculated?
Maintenance cost as a percentage of RAV is calculated by dividing total maintenance expenditure for a period by the replacement asset value of the assets covered (what it would cost today to replace that equipment) expressing the result as a percentage.
What influences Maintenance cost as percentage of RAV?
Maintenance cost is an absolute figure that says little on its own when comparing sites of different size. Maintenance cost as a percentage of RAV normalizes that figure against asset value, making it possible to compare a small facility against a large plant on a like-for-like basis, and to track whether spending is proportionate to what is actually being protected.
FAQ
Frequently asked questions
How are maintenance costs related to replacement asset value?
By dividing total maintenance expenditure by the replacement asset value (RAV) of the maintained assets and expressing the result as a percentage: a ratio that allows comparison across sites of different size, unlike absolute maintenance cost alone.
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