BS9990:2015
Dry Riser Regulations BS9990:2015 is the British Standard that regulate design, installation, testing and maintenance of dry risers. It dictates that dry risers should have an operating pressure of 12 bar and be visually inspected every 6 month and tested annually.
Are dry riser outlets required at ground floor?
Rising mains can be either wet or dry, depending on whether or not they have water in them. A dry riser has no water in it, so a fire truck must be connected to the inlet at ground level. There should be a dry riser outlet on each floor of a high-rise building.
What is the purpose of a dry riser?
A dry riser is a system of pipe work and valves that runs up through a building. The system allows fire fighters to easily access water from each individual floor of the building.
How often should dry risers be checked?
Every 12 months
Dry risers are required to have a 6 monthly visual check, Every 12 months a water test should be carried out to 12 bar for 15 minutes.
What emergency service would use a dry riser?
The use of dry riser and wet rising mains are intended for use by the Fire Brigade or properly trained personnel, to enable the rapid deployment of water to help fight fire in a building.
What is the difference between a wet riser and a dry riser?
Dry riser: a system of valves and pipe work which enables the fire service to pump water onto upper floors of a building. Wet riser: a system of valves and pipe work which is kept permanently charged with water, generally utilising pumps and tanks. in buildings over 18 metres above ground level.
When should a dry riser be installed?
Dry risers should be installed in buildings where the floor is between 18 & 60 meters above ground level. This is roughly equivalent to buildings of between 6 – 17 stories; Operating pressure of 12 bar; The run of horizontal connecting pipe is a maximum of 18 m in length.
What is a dry riser in a block of flats?
A dry riser is basically an empty pipe that runs up a building which can be externally connected to a pressurized water source by fire fighters. This vertical pipe can then distribute water to multiple levels of a building when fire fighting hoses are connected to an outlet valve typically located on each level.
How do you charge a dry riser?
The dry risers should be charged ONLY at the request of the OIC. In operation they should always be supplied by a dedicated pump. Each inlet connection point (hose connection) should have its own supply hose. Hydrants supplying dry riser base pumps must have twined supply lines.
Is dry riser maintenance a legal requirement?
Correct inspection and maintenance of Dry Risers is a legal requirement. The Dry Riser requires an annual pressure test. In addition a 6 monthly visual inspection must be performed. Dry Risers are vital for fire fighting in tall buildings, correct maintenance is essential.
What is the operating pressure of a dry riser?
It dictates that dry risers should have an operating pressure of 12 bar and be v isually inspected every 6 month and tested annually. Dry risers need to be installed in buildings where the floor is between 18 & 60 meters above ground level.
Is your wet riser or dry riser BaFe approved?
If your building has a dry riser or wet riser in place BAFE strongly recommends using an appropriately Third Party Certificated provider for your service and maintenance requirements. It is a legal requirement to ensure these provisions are maintained appropriately, so it remains ready and effective in an event of a fire.
What are the requirements for a dry riser inlet?
It should sit within an enclosure with a sign indicating that it is a dry riser inlet. The enclosure should hold a collecting head with no less than two instantaneous male hose connections and a drain down valve. This allows the fire and rescue service to access the inlet quickly and for the inlet to be effectively drained after use.
