Fire doors play a crucial role in ensuring the safety of building occupants in the event of a fire. In the UK, the latest regulations regarding fire doors can be found in the "The Building Regulations 2010 (Part B) Fire Safety" and "BS 9999: 2017 Code of practice for fire safety in the design, management and use of buildings". These regulations set out the requirements for the inspection and maintenance of fire doors in order to ensure they function properly in the event of a fire.
According to the "BS 9999: 2017 Code of practice for fire safety in the design, management and use of buildings", fire doors should be inspected at least every 12 months. However, the frequency of inspections may be increased if the fire doors are subject to heavy use or are located in areas with a higher risk of fire, therefore the recommended interval of inspections is 6 months. Additionally, any defects or damage to the fire doors should be repaired immediately. It is the responsibility of the building owner or manager to ensure that fire doors are properly maintained and inspected at regular intervals.