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[[Image:rangesystem16.png]][[Image:hoodandfiresystem.gif]][[Image:stainlessrangehoods256.gif]]A Kitchen Ventilation Hood is an air-intake device that is first, designed to capture vapors, fumes, smoke, steam, heat or odors from commercial food and heat-processing equipment, and second remove the captured matter by means of a mechanical exhaust system. A Kitchen Ventilation Hood is required when a Food Processing Establishment uses Heat-Processing equipment for food or utensils which produces grease, vapors, steam, fumes, smoke, or odors. A Type 1 Hood is a Hood that is designed for collecting and removing vapors, steam, fumes, odors and GREASE and SMOKE produced by Heat-Processing Equipment while a Type 2 Hood is a Hood that is designed for collecting and removing vapors, steam, fumes, and odors produced by Heat-Processing Equipment. A Type II Hood Should NOT be used over Heat-Processing Equipment that produces Grease or Smoke.Ductwork must be single-seam welded no less than 18" to combustibles. The duct must be 6" to limited combustibles. Two layers of 5/8" drywall on a wall with wooden studs is still considered a combustible. The wall must have metal studs or high-hat installed between the wood and drywall.[[Image:nameallthegreasehoodparts.gif]][[Image:exhaustfanexamples.gif]]terminology keywords: Ansul Suppression System, Wet Chem, Piro-Chem, Range Guardterminology keywords: Ansul Suppression System, Wet Chem, Piro-Chem, Range Guard, Pre-Engineered Fire Suppression SystemNew UL 300 compliant wet chemical fire suppression systems are now required to be installed for the protection of the hood plenum area. Most modern fire suppression systems include a mechanical gas shut-off valve (mentioned below) and an electronic micro switch is supplied with the system.Fire suppression system is required in all Type I Hood applications. The hood Fire Suppression system can be automatically actuated via fusible links or manually actuated via manual pull stations.== Portable Fire Extinguisher ==[[Image:HoodFireSuppression001.gif]]terminology keywords: Potassium Acetate AgentFire extinguishers designed specifically for kitchens are now available from most suppliers. A survey prepared by the National Association of Fire Equipment Distributors recently revealed that hand operated portables extinguished over 90% of the fire incidents in commercial facilities. In most cases the fire was completely extinguished before fire department personnel arrived on the scene. New UL 300 compliant wet chemical fire suppression systems are now required to be installed for the protection of the hood plenum area. Most modern fire suppression systems include a mechanical gas shut-off valve (mentioned below) and an electronic micro switch is supplied with the system. A Plenum is an enclosure that is designed to contain Exhaust or Supply Air of different pressure levels for removal or delivery. A pre-engineered fire suppression system is a utility shut down and extinguishing agent distribution system that is designed for protecting the hood, plenum, exhaust duct, grease filters, and cooking appliances from grease fires. Gas and Electricity needs to be shut down when the Fire Suppression system actuates. Depending on local and state codes, Supply and Exhaust Fans or other equipment may also be required to shut down upon the Fire Suppression system actuation.Shuts off gas to cooking equipment in the event of fire.Shuts off gas to cooking equipment in the event of fire. A gas shut off valve is required anytime that gas is used to power cooking equipment under the hood in which a Fire Suppression System is installed. An electricity shut off valve rule also applies the same way. == Portable Fire Extinguisher ==terminology keywords: Potassium Acetate Agent [[Image:FireClasses.png]] Fire extinguishers designed specifically for kitchens are now available from most suppliers. A survey prepared by the National Association of Fire Equipment Distributors recently revealed that hand operated portables extinguished over 90% of the fire incidents in commercial facilities. In most cases the fire was completely extinguished before fire department personnel arrived on the scene.