AS 1851:2012 was published in December 2012 and amended (A1) in 2017 to improve and fix the requirements as previously set out in AS 1851:2005. Table 4.4.4 of the Standard ten items that describe the requirements of the the five-yearly service schedule.
In general terms, these requirements essentially provide for the following;
Prior to conducting the fire hydrant system flow and hydrostatic pressure test, Firewize recommends building owners and agents of owners conduct ALL of the requirements set out in the standard and additional requirements to ensure the best possible outcome from conducting the test, and to eliminate the risk from leaks.
The flow chart (right) is the Firewize standard method for conducting a successful five yearly service, incorporating the Fire Hydrant System Flow Test and Hydrostatic Pressure Test. The method seeks to eliminate the risks from failure when conducting this test from water leaks.
Water leaks that occur during a fire hydrant system hydrostatic pressure test can occur at various points within the system such as;
The nature of this fire hydrant system hydrostatic pressure test is that the water pressures applied, typically 1.5 times the system design pressure will place all components of the system under excessive duress. This is to ensure the system is capable of working under real life situations. (i.e., when the fire brigade attends the site and uses the system as intended to fight a fire).
Leaks common in a fire hydrant system system can cause a failure for multiple reasons;
Prior to conducting the fire hydrant system hydrostatic pressure test and flow test we recommend that the checklist outlined on Page 3 of the Firewize Good Practice Guide (GPG023) that covers the maintenance requirements for fire hydrant systems and valves be completed in consultation with the Building Owner or the Agent of the Owner such as a property manager or facility manager.
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