It is a requirement that AFPS are well maintained to ensure reliability and serviced bi-annually. Procedures need to be in place to ensure regular maintenance and testing is carried out in accordance with BS EN 12845+A2.
The performance of passive fire protection systems can deteriorate in time due to corrosion. In particular systems using water, they are prone to rust deposits which can block sprinkler heads and spray nozzles.
The examination will record any changes to the fire hazard or its conditions of operation e.g. changes in structure, occupancy, heating or lighting and the distance that goods are stored below the sprinkler heads to ensure these are within the distance recommended.