Risers, Hydrants & Hoses
Rises, Hydrants and Hoses are manual fire suppression devices. They are used to expel high pressure water onto a fire in order to control or extinguish. Fire Hydrants and Wet Risers are fixed units that are connected to local water supplies. Hoses can be attached to these points to direct water into the fire. Most hoses are attached via a Storz connection however some may require adapters to properly align.
Dry risers differ slightly in that they are void of water to prevent unwanted freezing. Instead they are filled with air at a relatively low pressure. Upon opening, air is released and the pipes fill with water. Functionally they operate similarly to hydrants and wet risers however there is a small delay before water can be expelled.
British & International Standards include (but are not limited to) the following:
BS EN 671-1:2012 - Fixed firefighting systems. Hose systems. Hose reels with semi-rigid hose.
BS EN 671-2:2012 - Fixed firefighting systems. Hose systems. Hose systems with lay-flat hose.
BS 9099: 2006 - Code of practice for non-automatic fire-fighting systems in buildings.
BS EN 671-1: 2001 - Hose reels with semi rigid hose.
BS EN 671-2: 2001 - Hose systems with lay flat hose.
BS 5041-2:1987 - Fire hydrant systems equipment - Specification for landing valves for dry risers.
BS 5041-1:1975 - Fire hydrant systems equipment - Specification for landing valves for wet risers.