6.4  Maintenance plans

Maintenance plans are prepared based on the maintenance strategy that has been formulated. The plan will outline the maintenance activities, their timing or frequency and the information needed for the record for each asset. It will also take into account the current condition of the asset, and its criticality (degree of importance) for the water supply system. Based on the plan, activities such as inspections, parts replacement and preventive maintenance will take place.

  • Retta is drawing up a maintenance schedule for various items at his water utility. In terms of criticality, how should he rank the following items?

    • The computer used for billing customers.
    • The pump at the water intake.
    • The vehicles used by the leak detection team.
    • The control system for the rapid gravity filter.

  • A recommended ranking would be (starting with the most important):

    1. The pump at the water intake.
    2. The control system for the rapid gravity filter.
    3. The vehicles used by the leak detection team.
    4. The computer used for billing customers.

6.3  Maintenance strategy

6.4.1  Spare parts