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Wet Risers

If you own, manage or reside in a building higher than 60 metres, then a wet riser system is required as part of the fire safety solution. This helps to keep the building occupants safe from fire and also ensures the property and business can be protected from fire and ensure your insurance is valid.

If the building is less than 60 metres high, a dry riser system is required.

How does a riser system work?

A wet 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 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 wet 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 wet 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

Wet risers require other tests which may include checks and tests on electrical equipment, storage tanks and pumps.

For all service visits we will provide you with full certification to prove you have had your wet 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 wet 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 wet 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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