When an ageing booster assembly and gate valve was found to be leaking, Fire Safe ANZ’s sprinkler fitting team was called upon to complete five and ten yearly overhauls on the entire system. The late 1980’s system, whilst still functional, was not isolating the water to the hydrant landing valves on the ring main it serviced. This would make routine servicing impossible and presented significant risk of flooding if a valve was to be struck by a vehicle.
Other issues included leaking hydrant landing valves and lack of plans for the system being available to the Fire Brigade in an emergency.
New Gate Valve & Booster Assembly
After checking the street supply, it was found that the street’s “sluice valve” was also not functioning correctly either.
Being unable to isolate the water to the overall system from the street supply meant that the incoming live pipe had to be frozen so that the new isolation valve could be fitted. This was achieved by sub-contracting professional pipe freeze technicians to conduct a freeze near the gate valve assembly. After approximately half an hour of applying liquid nitrogen to the incoming pipe, a block in the feed water was achieved.
The gate valve and booster could then be changed over and the pipe work unfrozen. The site was only without its fire hydrant water for minimal time. We hope to update you on the street valve repairs in an upcoming article.
Overhauling the Landing Valves
Once the new gate valve and booster manifold had been fitted, the team was able to continue with the overhauling of the sites many landing valves. As you can see the results speak for themselves.
New Block Plans
The site also did not have appropriate “Block Plans”, these were easily redrawn by Fire Safe ANZ’s design team and placed at both the front of the property and within the sites pump room. The new plans significantly increase safety for the site.
Many thanks to Bondi Pipe Freeze for their help on the day and Firequip Rydalmere for manufacturing the new booster manifold.
For more information about our services, please contact Fire Safe ANZ.