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Dry Risers

If you own, manage or reside in a building where any floor is over 18 metres above ground level and below 50 metres in height then the installation and maintenance of a dry riser system is required.

If the building is over 50 metres high then a wet riser system is required.

How does a riser system work?

A dry riser system is a network of pipework and valves that allow the fire service to easily and quickly deliver water to upper floor levels. The maintenance of these pipe networks and associated valves is essential to ensure they do not leak, can maintain the pressures required for firefighting and are accessible for quick and easy connection.

Ensuring the fire and rescue service have fast access to water supplies throughout your premises is one of the most effective ways of fighting fire. The fire service will use their own tender (fire engine) to charge a dry riser pipework full of water. They will then connect their hoses to each outlet valve on each floor to fight the fire at each level. This quick and easy way of water distribution saves time and is a safer way to fight fires, ensuring the fire is more easily contained and quickly extinguished.

What is the difference between a dry and wet riser?

  • A dry riser system is designed to be charged with water by the fire brigade.
  • A wet riser system is kept full of water via water tanks and pumps.

Servicing and Maintenance

We offer servicing and preventative maintenance for all dry riser systems in accordance with BS9990:2015 Code of Practice for Non-Automatic Firefighting Systems in Buildings.

British Standards recommend that service visits should be carried out every 6 months. Every year one of these service visits is a major service (also known as a wet test) which would include more comprehensive tests such as the hydraulic pressure test. The remaining test is a visual inspection, which due to the accessibility of dry risers and their vulnerability to vandalism, is highly recommended.

A sample of maintenance checks we carry out is as follows:

Major Inspection & Test

  Hydraulic pressure tests of the pipework – this tests for leaks by pressurising the pipework to 10bar for 15 minutes
  Inspection of the pipework while filled with water and under pressure
  Visual inspections as below

Visual Inspections

  Check all outlet valves
  Check all outlet valve washers
  Check access hatches and doors
  Check all inlet valves
  Check all inlet valve gaskets and washers
  Check for damage and vandalism which may affect operation
  Check cabinet glass
  Check cabinet for corrosion/damage
  Check all valves open/close
  Check inlet breeching valve springs and rubbers
  Check signage is present and to latest Standard

For all service visits we will provide you with full certification to prove you have had your dry riser system serviced by a competent fire engineer, ensuring you are meeting current legislation requirements.

Why should I choose a BAFE registered company for my dry riser system?

Assured Fire & Security are a British Approvals of Fire Equipment (BAFE) registered company. This means that all fire systems we install and maintain meet the strict regulations set by BAFE. BAFE, under their scheme SP203, inspect us every 6 months to ensure we are installing and maintaining fire systems to a recognised standard. They also check our insurance, quality control, performance to codes of practice and much more.

What’s the next step?

If you’re looking for a regular maintenance schedule for your dry riser system, then please contact our friendly team on 0845 402 3045 or leave your details and we’ll provide you with a comprehensive maintenance quotation.

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