Fire dampers

How often should fire dampers be inspected and tested?

UK fire-safety law does not prescribe one universal interval for every damper in every building. Responsible persons must keep relevant fire-safety measures in efficient working order and good repair, while BS 9999:2017 provides the widely used benchmark of testing on completion and at least annually by a competent person.

The legal duty and the annual benchmark

Article 17 of the Regulatory Reform (Fire Safety) Order 2005 creates the maintenance duty for relevant premises. BS 9999:2017 provides the annual testing benchmark, as explained in BESA’s published guidance. DW145 complements this with guidance on damper installation, access, inspection and maintenance. These are technical guidance documents, not a standalone annual-testing law applying identically to every damper and every property.

Identify who holds the responsible-person duty for the premises
Maintain an accurate damper asset register and testing programme
Use a competent person and retain the results of every test

Why the interval can vary

The fire strategy, risk assessment, damper manufacturer, operating environment and previous findings may justify a shorter interval. Dusty or polluted environments, repeated failures, refurbishment works and changes to ventilation or compartmentation all warrant particular attention.

Follow any shorter interval required by the fire strategy or manufacturer
Review the programme after alterations, damage or a failed test
Record inaccessible assets as actions rather than treating them as passed

What a competent test should cover

Testing should go beyond locating a grille. The damper needs to be identified, safely accessed, functionally tested where applicable, reset and left in its correct operating position. The surrounding installation and penetration should also be considered for visible defects.

Confirm the asset identity, location, type and safe access route
Test operation, reset the damper and confirm its final position
Look for obstruction, contamination, corrosion, damage and installation concerns

What the record should contain

A useful record should allow a client to understand exactly what was tested, what could not be tested and what needs to happen next. Evidence should remain linked to the individual asset rather than being stored as an unstructured collection of photographs.

Asset reference, exact location, type and test date
Operative details, result, photographs and recorded defects
Access failures, remedial actions and the proposed next test date

Do not rely on the calendar alone

An annual programme is a benchmark, not permission to ignore an intervening concern. Damage, building alterations, ventilation changes, compartmentation works or evidence of failure should trigger review and action before the next scheduled date.

Escalate reported damage or operational concerns promptly
Reassess affected dampers after relevant building works
Close out defects with traceable evidence

Next steps

Relevant services and guidance

Continue with the FireX service, sector or location information most relevant to your building.

Original sources and further reading

General guidance

This article is general information, not legal, fire-engineering or product-design advice. Follow the building fire strategy, current official guidance, tested system evidence and competent professional advice.

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