In accordance with BS999 Annex w1 inspection should be undertaken annually, access door removed, visual inspection for signs of corrosion, accumulated dust or dirt damper blades to be fully dropped and reset, use of a soft cloth to clean case sides and if necessary a light application of a light lubricant on side springs,  update maintenance register and issue certification  

Many fire dampers have been fitted incorrectly and you may find your report leads to fails or advisories.

Common faults include no access doors for visual inspection and most commonly is the use of self drills screws, these are not huge problems and can be fixed quickly but need to be corrected.

BS999:2017 Fire safety in the design management and use of builders code of practice all dampers must comply with the criteria of resistance to fire for a stated period of time and that any faults are registered and remedial works undertaken.

Certificates to prove testing has taken place to be issued and logged