City logo and web banner

Hood & Duct Systems

A wet-chemical fire suppression system meeting UL 300 Standards is required by the California Fire Code anytime grease laden vapors are produced during the cooking process. It applies to all occupancy groups except single family dwellings. If you fry hamburgers, potatoes, or only one slice of bacon, you need a Class 1 hood as defined by the California Mechanical Code and a UL 300 fire suppression system.

 

UL 300 recognizes that the majority of restaurants have changed from cooking oil containing animal fats to vegetable oils over the past decade. Vegetable oils heat to higher temperatures creating a greater challenge to the old Ansul and Pyrochem suppression systems. Older systems may not put out the fire. Only systems designed and installed to UL 300 Standards can be modified and upgraded.

 

If cooking appliances located beneath a commercial hood have been exchanged, relocated, or modified in any way from the original installation, the Stockton Fire Department requires a new fire suppression system to be installed that meets UL 300 Standards.


The Stockton Fire Department maintains a list of active contractors in our area who can provide bids for new installations or provide the maintenance and service required by the California Fire Code.

 

Required Fire Suppression System

 

K-Class Extinguisher

The 2001 California Fire Code Section 1005.2.7 and local City of Stockton Ordinance  4-012 requires that all locations with commercial hoods, both new and existing, be equipped with a K-class fire extinguisher.

 

Exhaust and Makeup Air

California Fire Code Section 1005.2.4.2 requires the shutdown of all electrical located under the hood (not in the hood). Shutdown of makeup or supply air is recommended with system actuation. Likewise, exhaust fans in the ventilation system should remain on during the system discharge as this helps disperse chemical in the hood and exhaust shaft. Note: both Ansul and Pyrochem state their equipment is UL 300 listed with or without makeup air or exhaust fan shutdown.

 

Plans and Fees

Submit plans and fees for new fire suppression systems to the Fire Prevention Division. Three sets of plans should be provided along with the fee for up to a (4) four nozzle system or for five or more nozzles (we count the number of pull stations to determine the number of systems). The fee includes plan check and inspection.

 

A permit to install a hood and construct the protected exhaust shaft must be obtained from the Stockton Community Development Department Building & Life Safety Division.

 

If you have questions regarding any of these requirements or if you are ready for an inspection, please contact the Fire Prevention Division.

 

External Links


Office of the State Fire Marshal - California 

Stockton Municipal Code

California Fire Code

Adobe Reader Free Download

This City of Stockton webpage last reviewed on --- 3/21/2011