Water Test Procedure
The water test is applied internally as pressure head of water above the pipe at the high end of the line; the maximum water head is applied at the lower end to prevent damage to the pipeline. The steep pipeline should be tested in short section to avoid water head increase above the limit of the standard.

The following procedure should be adopted:
Mechanical or ball test stopper is fixed at the ends of the pipeline and strutted firmly to resist the full water head (The stopper at the higher end should have air vent with airtight valves to release the air from inside the line during water fill and the opening of the stopper at the lower end can be connected to standpipe "head water riser").
Water fill should start from the lower end of the pipeline, As soon as the pipeline is full of water and the air is released, fill the stand pipe to the required water head.
Keep filling the pipeline to the required head for at least one hour to enable the pipes becomes saturated.
After at least one hour of absorption period the water head should be kept at the required level, then after 15 minutes the added amount of water to maintain the level in the standpipe is measured, this amount should not exceed the specified quantity in the standard and no water leakage should appear during the water test. If leakage is more than the maximum permissible addition then the pipe has failed the water test. Further investigation is necessary to determine the cause of the failure.

The possible reasons for pipeline failure continuous absorption by the pipes or air trapped in the joints in this case the line should be allowed to stand a further period untile the conditions have stabilized.

2nd Industrial City, New Saniya,
New Al – Kharj Highway,
P.O. Box 17952,
Ar – Riyadh 11494,
Kingdom Of Saudi Arabia.
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