Commercial hood and suppression systems are inspected by a an inspector from the Fire Marshal's Office to ensure that it has been installed in accordance with approved plans and is functioning properly.
The Systems must be istalled in compliance with NFPA 96 and NFPA 17A
The following is a list of items which will be commercial hood plans:
- Rooftop exhaust is > 10'-0" from property lines (including lane or street property lines), discharges are > 40" above the roof, and the fan housing outlet is > 5'-0" horizontally from any combustible structure.
- Elevations of the building exterior have been provided when there is exterior ductwork.
- The protection around the duct (or clearance) continues up through the roof assembly to 18" above the roof.
- Wall exhaust termination is > 10'-0" from: combustible construction, including exterior wall cladding adjacent grade openings below or to the side adjacent buildings private property lines city property lines.
- The exhaust is > 10'-0" from any air intake.
- Exhaust ducts are steel-welded, liquid tight and the ducts and their supports are min. 16-gauge carbon steel or min. 18-gauge stainless steel.
- Exterior portions of ductwork and supports are noncorrosive stainless steel / painted / weather-protection coating.
- All ducts lead, as directly as practical, to the exterior of the building and horizontal ducts are substantially pitched back to the hood to drain and collect the grease.
- Hood ducts are not combined with any other building ventilation or exhaust system.
- Ducts for a solid fuel appliances' hood are not combined with ducts for gas or other types of fuel.
- Based on construction the fir code requires minimum clearances from ductwork and associated equipment where there is no shaft
- IFC compliant wall from the floor to the hood is provided.
- IFC required minimum clearance between the shaft and the duct.
- When the clearance between the heat source and grease removal device is less than 18", protection such as a steel baffle plate will be provided in conformance with IFC.
- Separation is provided between deep fat fryers and the surface flames from adjacent
- Equipment as indicated in IFC.
- Exhaust canopy is UL listed? If not listed provide proper documentation for determination of IFC compliance.
- Provide exhaust information as IFC required.
- Provide make-up air supply information as IFC required.