Section 904 Alternative Automatic Fire-Extinguishing Systems
Automatic fire-extinguishing systems shall be automatically actuated and provided with a manual means of actuation in accordance with Section 904.11.1. Where more than one hazard could be simultaneously involved in fire due to their proximity, all hazards shall be protected by a single system designed to protect all hazards that could become involved.
Exception: Multiple systems shall be permitted to be installed if they are designed to operate simultaneously.
Prior to conducting final acceptance tests, all of the following items shall be inspected:
- Hazard specification for consistency with design hazard.
- Type, location and spacing of automatic- and manual-initiating devices.
- Size, placement and position of nozzles or discharge orifices.
- Location and identification of audible and visible alarm devices.
- Identification of devices with proper designations.
- Operating instructions.
The automatic fire-extinguishing system for commercial cooking systems shall be of a type recognized for protection of commercial cooking equipment and exhaust systems of the type and arrangement protected. Preengineered automatic dry- and wet-chemical extinguishing systems shall be tested in accordance with UL 300 and listed and labeled for the intended application. Other types of automatic fire-extinguishing systems shall be listed and labeled for specific use as protection for commercial cooking operations. The system shall be installed in accordance with this code, NFPA 96, its listing and the manufacturer's installation instructions. Automatic fire-extinguishing systems of the following types shall be installed in accordance with the referenced standard indicated, as follows:
- Carbon dioxide extinguishing systems, NFPA 12.
- Automatic sprinkler systems, NFPA 13.
- Automatic water mist systems, NFPA 750.
- Foam-water sprinkler system or foam-water spray systems, NFPA 16.
- Dry-chemical extinguishing systems, NFPA 17.
- Wet-chemical extinguishing systems, NFPA 17A.
Exception: Factory-built commercial cooking recirculating systems that are tested in accordance with UL 710B and listed, labeled and installed in accordance with Section 304.1 of the International Mechanical Code.
A manual actuation device shall be located at or near a means of egress from the cooking area not less than 10 feet (3048 mm) and not more than 20 feet (6096 mm) from the kitchen exhaust system. The manual actuation device shall be installed not more than 48 inches (1200 mm) or less than 42 inches (1067 mm) above the floor and shall clearly identify the hazard protected. The manual actuation shall require a maximum force of 40 pounds (178 N) and a maximum movement of 14 inches (356 mm) to actuate the fire suppression system.
Exception: Automatic sprinkler systems shall not be required to be equipped with manual actuation means.
Cooktops and ranges installed in the following occupancies shall be protected in accordance with Section 904.13.1:
- In Group I-1 occupancies where domestic cooking facilities are installed in accordance with Section 420.8.
- In Group I-2, Condition 1 occupancies where domestic cooking facilities are installed in accordance with Section 407.2.6.
- In Group R-2 college dormitories where domestic cooking facilities are installed in accordance with Section 420.10.
- The automatic fire-extinguishing system shall be of a type recognized for protection of domestic cooking equipment. Preengineered automatic fire-extinguishing systems shall be listed and labeled in accordance with UL 300A and installed in accordance with the manufacturer's instructions.
- Manual actuation of the fire-extinguishing system shall be provided in accordance with Section 904.12.1.
- Interconnection of the fuel and electric power supply shall be in accordance with Section 904.12.2.
Aerosol fire-extinguishing systems shall be installed, periodically inspected, tested and maintained in accordance with Sections 901 and 904.4, NFPA 2010, and in accordance with their listing.
Such devices and appurtenances shall be listed and installed in compliance with manufacturer's instructions.