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Protection of Cooking Equipment

A VIEW FROM THE AHJ

The Protection of Cooking Equipment

R.T. Leicht

Fire Protection is more than merely “squirting wet stuff at hot stuff”! Any fire protection profes­sional will acknowledge that fire protection, in its entirety, is a system. In commercial cooking operations, fire protection consists of four pri­mary components; Prevention, Con­finement, Detection, and Extinguish­ment.

Prevention is summarized into subparts: control of ignition sources and control of combustible materials. The human element plays a major role in the control of ignition sources. Restaurant management has to first commit to training employees in the proper operation of cooking equip­ment… to see that it’s not being oper­ated at too high a temperature. Addi­tionally, management has to commit to routine maintenance… needed to assure that defective equipment/ motors do not become the culprit of unwanted heat source. Since accumu­lations of renegade grease deposits is a common fuel source for kitchen fires, the best means of controlling combustible materials is a conscien­tious hood and duct cleaning pro­gram by competent individuals. The cleaning should extend to all areas where dangerous grease accumula­tions may be found, not just to the hood and duct areas.

Confinement of the unprevented fire in exhaust ducts is a topic that has been under a great deal of study lately. The original purpose of ex­haust ducts was to vent excess heat and gases to the outside. This origi­nal intention didn’t take into account that there might be a fire in the duct. As restaurants in buildings of com­bustible construction burnt down at too high a rate in the 40’s and 50’s, it became apparent that combustible concealed spaces needed to be pro­tected from the duct by separation at modest distances or enclosure in a fire rated chase or some other new technology.

Detection in its most efficient and reliable means is by a human being. Seeing, hearing, and smelling a fire is still the most used form. However, many times a means of detection is desired even when a human being is not present. A greater benefit of auto­matic detection is all the other auto­matic appurtenances. With automatic detection, employees and patrons can be alerted, fuel can be shut off, fire departments can be notified and ex­tinguishing systems. can be activated. It is obvious why one does not want to have this feature impaired. So many other fire protection functions depend upon it.

Extinguishment comes in two varieties: manual and automatic. It can be as simple as placing a cover over a pan of flaming oil or turning off the heat. As a fire progresses, the use of the proper portable extin­guisher by a properly trained indi­vidual provides an excellent first-aid option. Over the years, automatic extinguishing systems, regardless if carbon dioxide, dry chemical, or wet chemical, has been proven to be suc­cessful in fire control when properly maintained. In the event that an automatic extinguishing system is not successful, automatic sprinkler sys­tems provide the best documented fire protection to a building and its contents. Additionally, they are considered relatively inexhaustible. However, not all buildings are sprin­kler protected. In the unlikely event that all the components of the com­mercial cooking protection fails, we should always be able to rely on public fire departments to save the neighborhood by controlling the fire to the building of origin.

In conclusion, the fire protection system is like all other systems in that it is dynamic. And as such, each component of the system is required to be maintained and re-evaluated. Any disruption of any single part of the system can adversely affect the total product and overall goal of the system.

About the Author: R. T. Leicht is a fire protection engineer for the State Fire Marshal’s Office in Delaware. He is past president of the Delaware Valley Fire Marshal’s Association and sits on a number of committees for the Fire Marshals Association of North America. He also serves as the Deputy Fire Marshal in Springfield, PA and is involved with the NFPA on many levels including a principal on numerous Technical Committees.

This article appeared in the Third Quarter 1998 edition of “The Scratch Pad”

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