4. Inspections made before putting the unit into operation for first time
It should be pointed out that even a newly constructed water
supply system has to be checked before it is commissioned in order to ensure
that it is properly constructed and that it works as intended. This first type
of inspection is usually a part of the construction phase.
The more painstaking the construction work, and the more
thorough the first inspection and the ensuing corrective work the less will be
the trouble in the life of the structure as far as the structural condition is
This first and most important inspection is the inspection which
is made after the completion of the construction work and before the
unit is put into operation for the first time. This inspection and the remedial
work which follows it are the basis for a sound structure which will function
provided it is properly maintained and operated in the future.
The team which was involved in the construction should not make
the inspection by itself. The most appropriate members of the inspection team
ought to be persons who would be responsible for the operation and maintenance
of the unit or system.
The team which was involved in the construction would itself
have made an inspection of the work and carried out improvement works as
necessary before announcing that it is ready to hand over the unit which has
The structures will be inspected by a team whose members
represent at least the group which is responsible for the construction on the
one hand and the future operation and maintenance on the other hand.
In order to facilitate the work the inspection should follow a
systematic pattern using a check list.
A record is made of the inspection and agreement reached
regarding the works (if any) which have to be carried out before the unit is put
The second inspection will verify whether all works agreed upon
during the first inspection have been carried out properly.
Tests are made to check the performance of the completed unit.
Water retaining structures including passages of all pipework
and fittings which are built - in have to be tested for watertightness.
A record is made of the tests and their results.
4.3 Disinfection and putting into operation
After the successful completion of the works and the
satisfactory results of the tests, the units will be cleaned thoroughly and
disinfected. Then the units are put into