The Fire Safety Group of Pittsburgh PA Phone: 412.635.9050   Toll Free: 800.427.7025   Location: Pittsburgh & Surrounding Areas
Home     Services     Pricing    Our Clients     About Us     Contact Us
Contact A Fire Safety Consultant Today
What Makes us the best choice

Jump To A Service:
Fire Extinguishers | Fire Suppression Systems | Sprinklers | Fire Alarms | Emergency Lighting | Exhaust Cleaning | Fire Hose | Backflow | Fire Hydrants | Training Services | Safety Supplies | First Aid Supplies

Understanding UL300


Fire test standard UL 300 has been a major factor in significant changes in how commercial cooking operations are protected from fire. This report looks at the background of UL 300 and changes in related NFPA National Fire Code documents. The dilemma of what to do about existing fire protection systems is also discussed.


In 1998, a revolution in the fire protection of commercial cooking operations occurred. Several key fire protection standards were revised. While protection requirements for new installations seemed clear, fire protection professionals found themselves in a quandary over existing installations.

The changes raised doubts about the ability of existing fire protection systems to provide adequate protection. Questions arose as to which systems needed to be upgraded, the length of transition time that should be allowed, and the difference in loss exposure between existing protection and new criteria.

A driving force behind this fire protection revolution is one fire test standard developed by Underwriters Laboratories, Inc. (UL). First issued in 1992, UL 300, Standard for Safety for Fire Testing of Fire Extinguishing Systems for Protection of Restaurant Cooking Areas, affects how kitchen fire protection systems are tested. The revised standard is intended to provide test conditions which more closely resemble the hazards faced in “real world” fire situations.

Indications that an existing protection system is not UL 300 compliant include:

  • Use of dry chemical agent.
  • Use of a single nozzle to protect multiple appliances.
  • Use of a single nozzle to protect a combination griddle/range.

To date, no dry chemical system has been listed under UL 300. However, existing dry chemical systems (separate from the system protecting the cooking appliance) may still be used for plenum and duct protection. UL 300 requires that multiple appliances be covered individually unless a specific listing is in the manufacturer’s design, installation, and maintenance manual and the manufacturer must specifically test this arrangement under the UL 300 test standard.

Allnew restaurant fire protection systems manufactured after the above effective dates must comply with UL 300 to qualify for a UL Listing. Those systems, which receive the UL listing, are published in UL’s annual Fire Protection Equipment Directory.

New Installations

Allnew restaurant fire protection systems manufactured after the effective date of November 1994 must comply with UL 300 to qualify for a UL Listing. In addition, NFPA 96 requires that such fire-extinguishing systems comply with UL 300. Used systems (or new systems manufactured prior to November 1994) that do not comply with UL 300 should not be installed.

Existing Installations

UL does not “unlist” restaurant fire protection systems that were listed prior to the implementation of UL 300. Such systems continue to qualify as a Listed product as long as the system is in compliance with its original Listing requirements.


Our Clients

The Fire Safety Groups clients span an array of industries from Restaurants to Hospitals. Below you will find a small sample of clients we service.


Find Out Risk Free
In 30 Seconds!

Schedule a Free On Site Compliance Survey or Private Phone Consultation Today!

Including a Free Core Compliance Armor Membership, *limited time offer


Check All That Apply:
Free Facility Inspection / Phone Consultation
Free Exclusive CCA Membership