A Fire Waiting to Happen
Extraction system filters can never eliminate all vaporised grease which, together with debris, condenses onto the canopy plenum, duct and fan surfaces. This build-up now only requires heat - readily available in every kitchen - to trigger off a frightening process. A spark or flame is not necessary, as spontaneous combustion can occur.
The grease in the duct acts as a fuse, carrying fire through the duct and the building. Fire, smoke and hot gases may break out at any penetration, hole, joint or discharge point or following heat-induced collapse of ductwork.
Temperatures up to 1200degC transmit heat through the metal to distort, destroy or ignite nearby material... such as duct support hangers, packing materials, electrical systems and litter.
In this way fire can spread rapidly... following the duct route which may be difficult and dangerous for fire fighters to access.
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A Risk Too Far
The Insurance Industry is hardening its attitude on the issue. This is hardly surprising since The Association of British Insurers has recorded losses associated with dirty kitchen extract fires rising from £25 million in 1997 to £65 million in 1998. (N.B. This only takes account of direct losses in excess of £50,000).
The Insurers' Loss prevention Council recommend that at least annual cleaning of entire systems by specialists is carried out, the exact frequency to be determined by a reasoned risk assessment.
Hazards of Dirty Kitchen Ventilation Systems
Even the most efficient extraction filters cannot remove all traces of grease and dirt from the air. Over time, a layer of grease and dirt is deposited on the surfaces of ventilation ducts, canopies and extractor fans. Not only does this cause an environmental health hazard by providing a breeding ground for bacteria and foul odours, it also reduces the efficiency of your extraction system and is a major fire risk.
It is therefore essential to carry out regular cleaning of your kitchen extraction and ventilation systems as determined by an appropriate risk assessment. Failure to do so could lead to a breach of the Environmental Health Regulations and could invalidate your fire insurance policy.
Northern Clean Ventilation Degreasing Service
Northern Clean provides a ventilation degreasing service that covers all aspects of extraction systems cleaning. Our experienced cleaning teams are fully trained to clean all the elements of your ventilation system to the high standards required to ensure a safe and healthy environment for your staff and customers.
