9. Maintenance programmes
It should be appreciated that it will not be possible to design
and implement a maintenance programme which will satisfy all conditions
everywhere. An individual schedule must be worked out for each individual system
taking into consideration the local conditions. It should be remembered that
such a schedule is dynamic and ought to be modified and improved all the time.
The reports and records on the system and its maintenance will greatly help in
the elaboration of the details for the modification and improvement of the
maintenance schedule. A systematic maintenance programme based on records and
realistic schedules and provided with the necessary logistics will ensure a
reliable service with less frequent breakdowns and shorter interruptions.
9.1 Components of Maintenance Programme
In order to be effective a maintenance programme must have sound
- financial; and
The discussion in this Module deals with the technical aspects
only. It should be pointed out, however, that the technical measures cannot be
fully realized without the necessary administrative and financial support.
In preparing a maintenance schedule for the first time one
should start with a survey of the water supply systems and make an inventory of
all components and units of the systems. Details of each unit should be recorded
separately on suitable simple forms which could eventually provide a complete
history of the unit and thus of the system of which it is a part. In case there
are no previous records, the second thing to do will be to complete the records
as appropriate where possible.
After the completion of the inventory, the tasks to be carried
out and their frequency shall be determined taking into account local conditions
and experience. Presentation should be best in tabular form.
The work schedule which may be tabulated should show the work to
be done at the prescribed frequency at every location. The individual items can
be given reference numbers and the frequencies figures or signs to show whether
the tasks are weekly, monthly, quarterly, six monthly, yearly, etc., in order to
make the tabulated summaries