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Non-Discretionary Maintenance (NdM)
Maintenance that is not optional and is mandatory.


Reasons
This is acceptable and rational behaviour for the following reasons :


    Examples
    Listed below are some examples of non-discretionary maintenance:
    • Annual testing of the fire safety equipment.
    • Monthly servicing of the elevators.
    • Clearing of vegetation debris from the roof drains.
    • Inspection of the exterior sealant for signs of distress.
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    Fig. Maintenance of elevator equipment
    is non-discretionary as it has safety implications.

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    Fig. Fire safety equipment, such as extinguishers and emergency exit signs, are subject to statutory maintenance and are therefore non-discretionary.

    See also:
    Compare with:


    The maintenance plan organized into seasonal maintenance tasks.
    Fig. The maintenance plan organized into seasonal maintenance tasks across an annual cycle.

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