What is a Dry Riser?

A Dry Riser System can be found in premises of 18 metres and above, or in low level buildings where there are excessive distances from entrances (45m). A Dry Riser is a system of valves and pipework which can be used to pump water to the upper floors of a building.

Dry Rising mains are designed for use by the Fire and Rescue Service and other trained personnel. They provide a readily available means of delivering considerable quantities of water to extinguish or to prevent the spread of fire.

Why Should I Have A Dry Riser Tested?

All buildings which have fire risers must comply with the new British Standard BS9990:2015, should be visually inspected every six months and static pressure tested annually.

This pressure test should only be carried out using water, NEVER AIR. The responsibility of ensuring that this test is completed belongs to either the owner of the premises, the Manager or Management Company.

If you do not comply with these regulations severe penalties may be incurred. It is the responsibility of the property owners or the Managing Agents to comply with these standards.

Failure to adhere to the rules and regulations could result in prosecution and may also invalidate your insurance if a fire situation were to occur and the system fails due to a lack of regular maintenance.

Why Should I Use Dry Risers Ltd To Carry Out Dry Riser Testing And Maintenance?

Fire equipment maintenance must be carried out by Competent Persons as required by relevant British Standards, Codes of Practice (Fire Safety Order (RRFSO)) and guidelines as prescribed by the manufacturers.

The RRFSO states in Part 2, Fire Safety Duties – Section 17 (Maintenance):

(1) Where necessary in order to safeguard the safety of relevant persons the responsible person must ensure that the premises and any facilities, equipment and devices provided in respect of the premises under this Order or, subject to paragraph (6), under any other enactment, including any enactment repealed or revoked by this Order, are subject to a suitable system of maintenance and are maintained in an efficient state, in efficient working order and in good repair.

In the event of an incident, fire investigators will ask to see a Certificate of Conformity, which should only be issued if the required standards have been adhered to.

Dry Risers Ltd ensure all works are completed in accordance with BS9990:2015 – the industry recognised British Standard.

What Do Our Dry Riser Testing & Maintenance Services Consist Of?

The Annual Static Pressure Test

The static test normally entails connecting the inlet to a pump & water supply. The system is then completely charged with water to a pressure of 10 bar measured at the inlet for a period of at least 15 minutes.

During this period, an inspection of the system is made to ensure that there is no leakage of water at any of the joints or landing valves.

Once the pressure test has been completed, the system must be drained so that it is left
ready for immediate use in an emergency situation.

Visual Inspection, Maintenance & Remedial Repairs

British Standard BS9990:2015 recommends that the system is visually inspected every 6 months and serviced annually to ensure that the equipment is in a satistactory condition and ready for immediate use in an emergency.

The six monthly visual inspection consists of:

  • Checking all valves open and close, leave closed (checking strap and lock if required)
  • Checking all outlet washers
  • Checking for damaged or missing blank caps and chains
  • Checking that all hand wheels and nuts are undamaged and in place
  • Checking landing outlets are free moving and undamaged
  • Checking the inlet cabinet and door for corrosion
  • Checking that the inlet breaching valve springs, and that the rubbers are free moving and in good condition
  • Checking the cabinet glass
  • Checking all required signage is present and correct

Maintenance & Remedial Repairs (as required):

  • Replacing outlet washers
  • Repair or Replace Valves (replace strap and lock as necessary)
  • Replace blank caps and chains
  • Repair or replace hand wheels and nuts
  • Repair or replace landing outlets
  • Replace the inlet cabinet and door
  • Repair or replace the inlet breaching valve springs (and replace rubbers as necessary)
  • Replace cabinet glass
  • Supply dry riser signage to all floors (as necessary)

In the event of system failure due to inability to hold pressure for the recommended 15 minutes at 10 bar (at the inlet), on completion of the remedial repairs a retest will be

Should the system’s pipework be altered (e.g. building alterations, extensions etc) then a full recommissioning flow test will be required.

Detailed Asset Inventory for each system

Provide a full written report detailing current status of all equipment for each system.

In the event that we identify any equipment to be unsatisfactory, a written estimate for remedial repairs can also be provided on completion.

Certificate of Conformity

All systems that are found to comply with the standards and are therefore in a satisfactory condition and ready for immediate use in an emergency will be issued with a Certificate of Conformity.


If you would like a further explanation of the required standards, or a dry riser testing estimate, please call us on 0845 463 9581, Email or use our Enquiry Form