All Community Fire and Rescue Services have fire hydrant rules and regulations. Legal requirements relate most to their access to firefighting dry riser appliances.
FIRE HYDRANT RULES: There are also legal requirements for fire hydrant location and fire hydrant flow rate in the United Kingdom.
Local communities and private dwellings must provide vehicular access to fire appliances. In most cases this includes water hydrants and dry risers.
Note: Failure to do so is against Building Regulations in the United Kingdom. It may put the lives of home and office occupiers at risk.
There should be vehicular access for a pumping appliance to within 45 meters of all points within the dwelling house. Every elevation to which vehicle access gets provided should have a suitable door. It should not be less than 750 mm wide and give access to the interior of the building.
There should be vehicle access for a pumping appliance to blocks of flats or maisonettes to within 45 meters of all points within each dwelling.
Note: The access requirements for other buildings depends upon the total floor area and the height.
In the United Kingdom, the Local Government Association (LGA) and the Water UK National Guidance Document provides legal guidance. The image shows fire hydrant signs regulations for proximity and pipe diameter.
They provide the recommended fixture locations and minimum flow rates.
UK fire hydrant regulations also govern minimum distances from dwellings.
The recommendation says any fire hydrant water supply infrastructure should provide mains network on the site. As a rule this should be at least 150 mm nominal diameter:
Note: High risk areas may require a greater flow rate of fire hydrant.
Minimum of 20 liters/sec (1200 l/min) to 75 liters/sec (4500 l/min) depending on the nature and extent of the development.
Dry riser regulations state that a fire hydrant should be located at the entrance to the site and if necessary, at 300 meter intervals. The hydrant should provide a minimum of 8 liters/sec (480 l/min).
If no piped water supply is available or where there is insufficient pressure or flow in the water main an alternative source must be provided.
Current Building Regulations require an adequate water supply for firefighting. A reasonable water supply must be available in circumstances where the building has a compartment of 280 square meters (or more) in area and there is no existing fire hydrant within 100 meters.
Failure to comply with the UK fire hydrant regulations on fire hydrant placement may prevent the applicant from obtaining a final certificate for building regulations.
Where no piped water supply is available, or there is insufficient pressure and flow in the water main, an alternative arrangement may be proposed as an acceptable open water supply.
This may get used for firefighting operations as the alternative water supply and example include:
Note: Fire hydrants legislation states suitable access, space and hard standing for a pumping appliance must be provided for all acceptable open water supplies.
Fire Hydrant Requirements and Dry Riser Regulations in the United Kingdom