Tag Archives: prescriptive

The argument for equivalence between scheduled and condition based maintenance manuals has been set.

Prescriptive or Rule Based!

In these modern times the maintenance manual that accompanies each new piece of machinery that is installed on a ship or platform can no longer be used to limit the guarantees offered by the manufacturer to setting prescriptive periods at which certain activities must be performed to achieve support of the OEM in the event of an unforeseen failure.

By their very nature these documents play to the lowest common denominator as the duty, location, environment , expected function, skill of operation and maintenance, etc., cannot be known for every installation therefore the recommendations must account for this and may as a result be sub-optimal.

Equipment makers need to recognise the option to maintain by condition and in doing so value that the operators who aspire to become world class performers will outdo their expectations and drive the envelope to maximise the value of the asset by maximising efficiency.

Maintenance manuals for all machinery would be wise to include a detailed FMEA as a minimum, possibly seperate FMEA’s for general expected installations. Clearly these will only be part of the story as the owner of the asset will have to complete the FMEA in respect of local conditions, maintenance expectations and environment, but at least the asset will start its life under the joint co-operative umbrella of a best practice approach.

It is my sincere belief that purchasors and specifiers should endeavour to ensure that only companies who provide this data are included in their respective tender process.

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