406.6 - Repair garages
406.6.1
General. Repair garages shall be constructed in accordance with the
International Fire Code and Sections 406.6.1 through 406.6.6.
This occupancy shall not include motor fuel-dispensing facilities, as regulated
in Section 406.5.
406.6.2
Mixed uses. Mixed uses shall be allowed in the same building as a repair
garage subject to the provisions of Section 508.1.
406.6.3
Ventilation. Repair
garages shall be mechanically ventilated in accordance with the
International Mechanical Code. The ventilation system shall be
controlled at the entrance to the garage.
406.6.4
Floor surface. Repair
garage floors shall be of concrete or similar noncombustible and nonabsorbent
materials.
Exception: Slip-resistant, nonabsorbent, interior floor finishes having a critical radiant flux not more than 0.45 W/cm2, as determined by NFPA 253, shall be permitted.
406.6.5
Heating equipment. Heating equipment shall be installed in
accordance with the International Mechanical Code.
406.6.6
Gas detection system.
Repair garages used for repair of vehicles fueled by nonodorized gases, such as
hydrogen and nonodorized LNG, shall be provided with a flammable gas detection
system. [F]
406.6.6.1
System
design. The flammable gas detection system shall be listed or approved
and shall be calibrated to the types of fuels or gases used by vehicles to be
repaired. Gas detectors or sensors shall be listed in accordance with UL 2075
and shall indicate the gases they are intended to detect. The gas detection
system shall be designed to activate when the level of flammable gas exceeds 25
percent of the lower explosive limit. Gas detection shall also be provided in
lubrication or chassis repair pits of garages used for repairing nonodorized
LNG-fueled vehicles. [F]
406.6.6.2
Operation. Activation of the gas detection system shall result in
all of the following: [F]
1. Initiation of
distinct audible and visual alarm signals in the repair garage.
2. Deactivation of all heating systems
located in the repair garage.
3.
Activation of the mechanical ventilation system, where the system is
interlocked with gas detection.
406.6.6.3
Failure of the gas detection
system. Failure of the gas detection system shall result in the
deactivation of the heating system, activation of the mechanical ventilation
system when the system is interlocked with the gas detection system and cause a
trouble signal to sound in an approved location. [F]
Notes
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No prior version found.