What is a water supply proving test?

A water supply proving test is a functional test of the water supply of an automatic fire sprinkler system or fire hydrant system to validate the required performance (duty) of the water supply. This test is used to determine if there has been any degredation in the water supply that could adversely affect the performance of the water supply between tests, placing the occupants of the building at risk from fire.

Block Plan Fire Sprinkler Example A3 Landscape

An automatic fire sprinkler system and fire hydrant systems require a functional test of the water supply on a yearly basis.  Where this system is combined, it stands to reason both water supply proving tests should be conducted.

The purpose of a water supply proving test is to compare the actual water supply perfomance (water supply flow rate and pressure) against the required performance (duty) as set out in the approved design.

In most cases, the required performnace (duty) is detailed on the block plan for the automatic fire sprinkler system or fire hydrant system.

Prior to undertaking a water supply proving test, it is important to verify the accuracy of the water supply pressure gauges against a calibrated gauge.

AS1851 Fire Sprinkler or Hydrant Systems Maintenance

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Water Supply Proving Test - Wet Pipe Sprinkler System

Item No Item Action Required and pass/fail requirement Result Pass/Fail Comment
3.5 Water supply proving test
  1. CONDUCT a water supply test, subject to limitations imposed by the water agency controlling the supply source. The test may be a combination of physical testing and calculation as necessary.
Static supply pressure (kPa)    
  1. Discharge water through the flow- measuring device at the flow corresponding to the hydraulically most favourable duty flow. Record the flowing pressure.
Flow ......L/[email protected] pressure .........kPa    
  1. Reduce the water flow through the flow measuring device to that corresponding to the most unfavourable duty point. Record the flowing pressure.
Flow ......L/[email protected] pressure .........kPa    
  1. Shut off water flow to flow-measuring device. Record static pressure.
Static supply pressure ......... kPa    
  1. VERIFY that the system flow and pressure requirements detailed on the block plan are satisfied.
     
  1. COMPLETE a water supply test report in accordance with AS 2118.1.
Notes:
  1. This test should be conducted by substituting the installation and below stop valve pressure gauges with calibrated gauges of known accuracy.
  2. Where pumpsets are fitted, the water supply flow test should be performed combined with the pumpset load test requirements in Section 3.
     

 

Water Supply Proving Test - Fire Hydrant System

Item No Item Action Required and pass/fail requirement Result Pass/Fail Comment
3.5 Water supply proving test CONDUCT a water supply proving test for each water supply verifying that the system flow and pressure requirements meet the design criteria, using either—
  1. a fixed flow meter test facility; or
Static supply pressure ..............kPa
Flowing pressure .............kPa
   
  1. a portable test apparatus at the most hydraulically disadvantaged hydrant valve(s).
Flow L/s .............kPa
No. hydrants flowing .....
   
Notes:
  1. Where the water supply is the sole source of water for both sprinkler and hydrant systems, both sprinkler and hydrant demands should be available simultaneously.
  2. In high-rise buildings where there are multiple pressure zones, a water supply proving test should be carried out on the most remote hydrant in each zone.
     
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