Fire Mitigation Services
Dry Riser Testing and Maintenance
Covering all of Scotland.
Dry Riser Maintenance
What is a Dry Riser ?
A Dry Riser or Rising main is a pipework system which is used by the Fire service to fight fires in multi storey buildings or within large complex buildings like hospitals.
In an emergency fire situation, time is crucial and a Dry Riser will allow firefighters to apply water to a fire much quicker than if they had to run their fire hose all the way from the fire appliance to the scene of a life threatening fire.
Dry Risers are usually fitted in buildings which are between 18 and 60 metres high or buildings of 4 storeys and above.
They can also be found running horizontally in complex buildings to quickly provide water for firefighting nearer the scene of a fire.
One Dry Riser system consists of an inlet at ground floor level on the outside of the building within reach of the roadway, where the Fire Service can connect their fire appliance pump in order to fill the system with water.
The pipework then goes to each level of the building or to remote locations where a landing valve or outlet is located in the stairwell or lobby.
The landing valve is where the Fire Service would connect their hose to carry out firefighting operations on the upper levels of a building or deep within a complex building.
Most of the time the landing valve will be enclosed in a cabinet but sometimes all the pipework will be visible within the stairwell.
To ensure that water reaches the firefighters quickly during a fire situation, there is an air relief valve or air exhaust valve at the highest point of the pipework which allows the air out of the system as the water enters at the bottom.
The air relief valve will seal automatically when the system is full of water and pressurised.
Dry Riser Maintenance
Ask Yourself this..
How do you test a Dry Riser ?
This document is produced by the British Standards Institute.
Numbers to Date
Frequently Asked Questions
The Dry riser is part of the common areas within a building, therefore the landlord or the building manager is responsible for the maintenance. In residential properties it would usually be the factor or property management company.
The British Standard (9990 2015) is the recognised code of practice and it recommends a 6-monthly visual inspection and an annual functional or wet pressure test.
British Standard 9990(2015) which is the recommended code of practice recommends that a dry riser is filled with water and pressurised to 12 Bar for 15 minutes. During that time we will also be checking all the other associated parts of the system.
If f there is no Dry Riser in your building, then you don’t need one, however if there is one installed, the person who has responsibility for management of the building has a duty of care to ensure that it is tested and maintained in accordance with the recommended code of practice.(BS 9990-2015)