It is now a legal requirement to have water tanks fitted with fire fighting provision in some areas but we would encourage anyone with a tank to ensure it’s fitted with a simple coupling as a matter of priority.
A fire truck only holds a relatively small volume of water so access to the 30,ooo-45,000 liters in the storage tanks could make all the difference.
This standard provides requirements for the design, construction, installation, and maintenance of tanks and accessory equipment that supply water for private fire protection.
The approved couplings for all suction sources is 100mm Female Round Threaded Suction Coupling. This needs to be within 5m of the hardstand area as well as complying with the 6m/90m rules.
Alternate water supplies can be delivered to within 90m of the hazard by piping the water to the hardstand area. This allows tanks or ponds etc to be hidden from view. The pipe needs to be sized to allow 750l/m at the coupling and a hardstand area is still required within 5m of the coupling.
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Tasman District Council 2 August 2014 Rules Section 17.5 page 17/95
Controlled Activities (Building Construction or Alteration)
Only in relation to the construction of a dwelling and not an alteration, and except where any dwelling is connected to a reticulated water supply:
The dwelling is EITHER
Provided with a water supply that is
OR (ii)Provided with a home fire-sprinkler system that is fitted with a reliable year- round water supply;
AND (iii)Connected to a reticulated supply that is capable of supplying a potable water supply, or if such a supply is not available, the dwelling is supplied from:
NOTE 1: Further advice and information about managing fire risk and storage of water for fire fighting, including information about appropriate fittings for connection with fire appliances, can be obtained from the New Zealand Fire Service and the NZ Fire Service Firefighting Water Supplies Code of Practice (SNZ PAS 4509:208).
NOTE 2: Information about the design, installation and maintenance of the sprinkler system can be found in NZS 4517:2010 Fire Sprinkler Systems for Houses.
NOTE 3: Fire risk can be further reduced through appropriate management of flammable vegetation near structures and ensuring fire appliances can locate and reach the dwelling in the event of a fire. Further information about managing fire risks is available from the NZ Fire Service or the Waimea Rural Fire Authority.
You need 45,000 Litres Readily Available Water
Where reticulated water supplies are unavailable or insufficient, alternative firefighting water sources may be used to provide a firefighting water supply. Alternative sources may come from a mixture of reticulated and static supplies.
Alternative firefighting water sources should meet minimum standards for firefighting (access, security, visibility, adequacy of supply) and have a suitable fire service coupling for firefighting equipment and be sited to provide safe and ready access for Fire Service operations.
NOTE – Where plastic tanks are used for storing firefighting water, consideration needs to be given to shielding them from the effects of radiated heat from a fire.
Where this code of practice is applied in areas outside urban fire districts, Fire Service personnel giving advice on the adequacy of water volumes should take into account any special circumstances such as distance to the nearest fire station, size of buildings and normal use of water from any storage tank when recommending total storage volume.
The water supply must be reasonably protected from vandalism and tampering that may negate it being usable, for example, with a locked off (with a lightweight chain) valve on the outlet pipe that can be cut with bolt cutters to access.
There should be unimpeded access within the specified 90 m distance to a building allowing vehicular access to the firefighting water supply at all times, with the roading able to support a 20 tonne vehicle. In making an allowance for access, consideration must be taken of the complete travel route and access way widths, entry and exit ways, room to manoeuvre, obstructions (overgrown vegetation, hanging cables and building projections), gradients, gateways, and road surfaces. Where, due to the siting of the water tank, vehicle access is not practical, there should be a clear, safe working area, to support the siting of a portable pump and associated equipment, providing agreement is obtained from the Fire Region Manager.
A suction source is accessible, open or tank water. For an open water source the hardstand area must allow the appliance pump inlet to be within five meters os the water supply or the coupling. The water source shall be able to provide 750 l/m and also sustain a contineous accessible depth of at least 1m. The structure must be no further than 90m and no closer than 6m of the water supply or coupling.
The maximum theoretical lift for Fire Service pumps is 10 m and the maximum practical lift is 7.5 m.
The rated capacity of a Fire Service pump is its output in L/min when working from a 3 m lift, see figure B1.
A flooded source is a tank or supply more than 10 m above road level fitted with a fire service coupling, see figure B3.
There must be a hardstand for a fire appliance as close as reasonably practicable to the fire service coupling, but this distance should not exceed 25 m. The fire service coupling must be within 90 m of the premises (see figure B4).
A house (without a sprinkler system) is to be built out in the country, where there is no street reticulation. the picture outlines the requirements of the Code of Practice