Norfolk Fire and Rescue Service is called to fires which start in the kitchen extraction systems and ducts of businesses like pubs, cafes, restaurants, and hotels.
Filters cannot remove all traces of grease and dirt from the air. Over time a layer of grease and dirt builds up on the surfaces of the ventilation ducts, canopies and extractor fans. This presents a major fire risk.
Fires within the ductwork are very difficult to stop. Ductwork is often innacessible, and fire may break out of the ductwork in other parts of the building. Damage is often serious and businesses are forced to close.
It takes six months to recover from a fire and many businesses do not reopen.
Ductwork Ideally you should measure the rate of build-up of grease on the internal surfaces of the ductwork. If this is not possible your cleaning work should be planned around the level of use:
Where cooking processes involve fat frying or wood/charcoal burning, cleaning may need to be more frequent.
These should be cleaned and degreased daily, or in accordance with the manufacturer’s recommendations. Cooking should never be carried out without the filters in place.
Consult your building insurance company to ensure that your cleaning regime is compliant with any specific requirements they may impose regarding kitchen extract and ventilation systems.
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Norfolk Fire and Rescue Service
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