Dry riser mains are an excellent means of fire protection, allowing considerable quantities of water to be quickly and directly transporting to relevant locations. This allows the fire services to better tackle any fires that may arise.
Installation of Dry Risers in accordance with BS9990:2015
Dry risers are comprised of vertical mains which are fitted into staircase enclosures or other suitable locations, with outlets installed at ground level to enable the fire services to connect into the water supply. Dry riser mains present a readily available means of delivering substantial quantities of water in order to extinguish or prevent the spread of fire. They are intended for use by the fire services or other trained personnel.
FSE provides an industry qualified design team who will put together a full design specification and give accurate installation costs. The information for the specification can either be gathered from scale drawings, or a free of charge full-site survey can be carried out by our engineers.
FSE uses its own highly trained mechanical engineers to provide the best possible service ensuring efficient installation, top quality workmanship and highly competitive prices. All our site personnel are accredited to the Construction Skills Certification Scheme (CSCS) which includes training and instruction in basic and advanced site skills as well as encompassing Health and Safety awareness, as detailed within the CSCS Scheme Booklet. Engineers also hold licenses for IPAF (International Powered Access Federation) and PASMA (Prefabricated Access Suppliers and Manufacturers association).
Following each installation a full ‘wet test’ of the system is undertaken in accordance with BS9990 guidelines and certification is awarded on successful completion of that test. All installation work comes with a full 12 month warranty guarantee so you can have complete confidence in your system.
The local fire services must be consulted to ascertain exact requirements before the installation of dry riser systems.
Service of Dry Risers in accordance with BS9990:2015
Dry risers must be serviced every six months to ensure they comply with regulations. They must undergo an initial wet test, as well as having a visual inspection every six months. This applies to all buildings above 18 metres and below 60 metres (buildings over 60 metres require wet risers).
During the wet test of the dry riser system, engineers fill each riser stack – the pipe that rises through the building with a landing valve on each floor/level – with water. Some companies use the fire hydrant in the street to carry out these tests. However, this is not permissible because this water should only be used by the fire services and is not for the benefit of testing companies. FSE engineers carry all their own specialist equipment, including the necessary water bowser in order to perform the correct service.
The dry riser is pressurised to 10 bar and needs to hold water within the pipework stack for 15 minutes at this pressure in order for certification to be issued. On completion of the test the water is then drained using the drain down valve and water is discharged back into the water bowser for future testing purposes. Some premises require three or more dry risers and each stack should receive the same test and be certified accordingly. Should any remedial works be required, the FSE team will provide a prompt quote so that your system can be brought to the required standard. FSE also provides a 24/7 callout service should you have any urgent issues.
It is important before any testing takes place that the engineer checks that the landing valves are in good condition, that they have not been tampered with and that valves are closed shut to prevent any water escaping. The air release valve should also be checked at the top of each stack for correct operation.
All remedial works and maintenance should be carried out by a competent, trained and accredited engineer. FSE’s engineers are fully qualified to carry out this work.
More information can be found at: www.bafsa.org.uk