BS 9990 Non-automatic firefighting systems in buildings – Code of practice is now open for public comment
With recommendations for both wet and dry fire mains, the document from the British Standards Institution (BSI) covers good practice for the design, installation, testing, and maintenance of non-automatic firefighting systems.
The provision of fire mains is an essential element of fire protection systems in large and complex buildings, “due to the potential difficulties in providing water supplies at the point of use for firefighting and search and rescue”. It is, therefore, essential that such systems are maintained to “enable instant readiness when required”.
Led by the FSH/18 – Fixed firefighting systems committee, the draft standard supersedes BS 9990:2015. It features design considerations, provision and siting, and electrical earthing of fire mains, and offers recommendations around the use of private fire hydrants. It also covers guidance on water supplies and pumping arrangements, as well as the installation, commissioning, and maintenance of systems and the rectification of defects.
Also included is guidance on work on site and for buildings under construction, with steps to ensure materials and components are protected from deterioration and damage. The draft for BS 9990 stipulates that fire mains should be in operational condition as soon as any floor of the building reaches 11 metres above the fire and service access level. Additionally, as work on the building proceeds, they should be “extended and commissioned progressively at least at every three-storey rise in height”.
Not covered within the British standard are hose reels, foam inlets, automatic foam systems, and portable firefighting equipment.
The Draft for Public Comment (DPC) will run until 5 April 2026. Comment resolution is expected to begin in September 2026, and publication of the standard is anticipated on 28 October 2026.
More information about the consultation can be found here.