Repair Garage Requirements IFC.pdfthan 3 inches (76 mm) in height on a background of
-casting color bearing the following or approved equi
wording:
WARNING
NO IOKING—STOP ENGINE WHILE
SHUT OFF ELECTRICITY
DO Nib " START ENGINE UNTIL Al'"I"E1 ELOW
13 K SPACES ARE VENTILA71' ,1).
2310.6 Fire pt tection. Fire protection f tares for marine
motor fuei dispe -ing facilities shall co- lily with Sections
2310.6.1 through 10.6.4.
2310.6.1 tandla e hose stations Fire hose, where pro-
vided, shall be enel sed within as abinet, and hose stations
shall be labeled: IAF HO EMERGENCY USE
ONLY.
2310.6.2 Obstruction f "ur e, protection equipment.
Materials shall not be playa d on a pier in such a manner as
to obstruct access to fir, tira;g equipment or piping sys-
tem control valves.
2310.6.3 Access. W ere the p'i' is accessible to vehicular
traffic, an unob,t ctcd roadway o the shore end of the
wharf shall ben itrtadned for acce. , )y fire apparatus.
2310.6.4 'Por bleu fire extinguishers. oilable fire extin-
guishers in ccordatnct, with Section q ; ", each having a
mil ating, of 20-B:C, shall be provi ' d as follows:
on each float.
2, lrre on the pier or wharf within 25 feet (;d mm)
of the head of the gangway to the float, tan. the
office is within 25 feet (7620 mm) of the gangway
or is on the float and an extinguisher is provided
thereon.
SECTION 2311
REPAIR GARAGES
2311.1 General. Repair garages shall comply with this sec-
tion and the International Building Code. Repair garages for
vehicles that use more than one type of fuel shall comply with
the applicable provisions of this section for each type of fuel
used.
Where a repair garage also includes a motor fuel -dispens-
ing facility, the fuel -dispensing operation shall comply with
the requirements of this chapter for motor fuel -dispensing
facilities.
2311.2 Storage and use of flammable and combustible liq-
uids. The storage and use of flammable and combustible liq-
uids in repair garages shall comply with Chapter 57 and
Sections 2311.2.1 through 2311.2.4.
2311.2.1 Cleaning of parts. Cleaning of parts shall be
conducted in listed and approved parts -cleaning machines
in accordance with Chapter 57.
2311.2.2 Waste oil, motor oil and other Class IIIB liq-
uids. Waste oil, motor oil and other Class IIIB liquids
shall be stored in approved tanks or containers, which are
MOTOR FUEL -DISPENSING FACILITIES AND REPAIR GARAGES
allowed to be stored and dispensed from inside repair
garages.
2311.2.2.1 Tank location. Tanks storing Class IIIB liq-
uids in repair garages are allowed to be located at,
below or above grade, provided that adequate drainage
or containment is provided.
2311.2.2.2 Liquid classification. Crankcase drainings
shall be classified as Class II1B liquids unless otherwise
determined by testing.
2311.2.3 Drainage and disposal of liquids and oil -
soaked waste. Garage floor drains, where provided, shall
drain to approved oil separators or traps discharging to a
sewer in accordance with the International Plumbing
Code. Contents of oil separators, traps and floor drainage
systems shall be collected at sufficiently frequent intervals
and removed from the premises to prevent oil from being
carried into the sewers.
2311.2.3.1 Disposal of liquids. Crankcase drainings
and liquids shall not be dumped into sewers, streams or
on the ground, but shall be stored in approved tanks or
containers in accordance with Chapter 57 until
removed from the premises.
2311.2.3.2 Disposal of oily waste. Self-closing metal
cans shall be used for oily waste.
2311.2.4 Spray finishing. Spray finishing with flammable
or combustible liquids shall comply with Chapter 24.
2311.3 Sources of ignition. Sources of ignition shall not be
located within 18 inches (457 mm) of the floor and shall com-
ply with Chapters 3 and 35.
2311.3.1 Equipment. Appliances and equipment installed
in a repair garage shall comply with the provisions of the
International Building Code, the International Mechani-
cal Code and NFPA 70.
2311.3.2 Smoking. Smoking shall not be allowed in repair
garages except in approved locations.
2311.4 Below -grade areas. Pits and below -grade work areas
in repair garages shall comply with Sections 2311.4.1
through 2311.4.3.
2311.4.1 Construction. Pits and below -grade work areas
shall be constructed in accordance with the International
Building Code.
2311.4.2 Means of egress. Pits and below -grade work
areas shall be provided with means of egress in accordance
with Chapter 10.
2311.4.3 Ventilation. Where Class I liquids or LP -gas are
stored or used within a building having a basement or pit
wherein flammable vapors could accumulate, the base-
ment or pit shall be provided with mechanical ventilation
in accordance with the International Mechanical Code, at
a minimum rate of 1'/Z cubic feet per minute per square
foot (cfm/ft') [0.008 m'/(s • m')] to prevent the accumula-
tion of flammable vapors.
2311.5 Preparation of vehicles for repair. For vehicles
powered by gaseous fuels, the fuel shutoff valves shall be
2012 INTERNATIONAL FIRE CODE® 219
MOTOR FUEL -DISPENSING FACILITIES AND REPAIR GARAGES
closed prior to repairing any portion of the vehicle fuel sys-
tem.
Vehicles powered by gaseous fuels in which the fuel sys-
tem has been damaged shall be inspected and evaluated for
fuel system integrity prior to being brought into the repair
garage. The inspection shall include testing of the entire fuel
delivery system for leakage.
2,311.6 erre extinguis er ; JF,i ' extinguishers shall be pro -
N1 d in a c.tra'i:'iii i � c ic)u� 906.'
2311.7 Repair garages for vehicles fueled by lighter -than -
air fuels. Repair garages for the conversion and repair of
vehicles which use CNG, liquefied natural gas (LNG), hydro-
gen or other lighter -than -air motor fuels shall be in accor-
dance with Sections 2311.7 through 2311.7.2.3 in addition to
the other requirements of Section 2311.
Exception: Repair garages where work is not performed
on the fuel system and is limited to exchange of parts and
maintenance requiring no open flame or welding.
2311.7.1 Ventilation. Repair garages used for the repair
of natural gas- or hydrogen -fueled vehicles shall be pro-
vided with an approved mechanical ventilation system.
The mechanical ventilation system shall be in accordance
with the International Mechanical Code and Sections
2311.7.1.1 and 2311.7.1.2.
Exception: Repair garages with natural ventilation
when approved.
2311.7.1.1 Design. Indoor locations shall be ventilated
utilizing air supply inlets and exhaust outlets arranged
to provide uniform air movement to the extent practi-
cal. Inlets shall be uniformly arranged on exterior walls
near floor level. Outlets shall be located at the high
point of the room in exterior walls or the roof.
Ventilation shall be by a continuous mechanical
ventilation system or by a mechanical ventilation sys-
tem activated by a continuously monitoring natural gas
detection system or, for hydrogen, a continuously mon-
itoring flammable gas detection system, each activating
at a gas concentration of not more than 25 percent of
the lower flammable limit (LFL). In all cases, the sys-
tem shall shut down the fueling system in the event of
failure of the ventilation system.
The ventilation rate shall be at least 1 cubic foot per
minute per 12 cubic feet [0.00139 m3 x (s • m3)] of
room volume.
2311.7.1.2 Operation. The mechanical ventilation sys-
tem shall operate continuously.
Exceptions:
1. Mechanical ventilation systems that are inter-
locked with a gas detection system designed in
accordance with Sections 2311.7.2 through
2311.7.2.3.
2. Mechanical ventilation systems in repair
garages that are used only for repair of vehi-
cles fueled by liquid fuels or odorized gases,
such as CNG, where the ventilation system is
electrically interlocked with the lighting cir-
cuit.
2311.7.2 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.
2311.7.2.1 System design. The flammable gas detec-
tion system shall be listed or approved and shall be cal-
ibrated to the types of fuels or gases used by vehicles to
be repaired. The gas detection system shall be designed
to activate when the level of flammable gas exceeds 25
percent of the lower flammable limit (LFL). Gas detec-
tion shall also be provided in lubrication or chassis ser-
vice pits of repair garages used for repairing
nonodorized LNG -fueled vehicles.
2311.7.2.1.1 Gas detection system components.
Gas detection system control units shall be listed
and labeled in accordance with UL 864 or UL 2017.
Gas detectors shall be listed and labeled in accor-
dance with UL 2075 for use with the gases and
vapors being detected.
2311.7.2.2 Operation. Activation of the gas detection
system shall result in all the following:
1. Initiation of distinct audible and visual alarm sig-
nals in the repair garage.
2. Deactivation of all heating systems located in the
repair garage.
3. Activation of the mechanical ventilation system,
when the system is interlocked with gas detec-
tion.
2311.7.2.3 Failure of the gas detection system. Fail-
ure of the gas detection system shall result in the deacti-
vation of the heating system, activation of the
mechanical ventilation system and where the system is
interlocked with gas detection and causes a trouble sig-
nal to sound in an approved location.
2311.8 Defueling of hydrogen from motor vehicle fuel
storage containers. The discharge or defueling of hydrogen
from motor vehicle fuel storage tanks for the purpose of
maintenance, cylinder certification, calibration of dispensers
or other activities shall be in accordance with Sections
2311.8.1 through 2311.8.1.2.4.
2311.8.1 Methods of discharge. The discharge of hydro-
gen from motor vehicle fuel storage tanks shall be accom-
plished through a closed transfer system in accordance
with Section 2311.8.1.1 or an approved method of atirio-
spheric venting in accordance with Section 2311.8.1.2.
2311.8.1.1 Closed transfer system. A documented
procedure that explains the logic sequence for discharg-
ing the storage tank shall be provided to the fire code
official for review and approval. The procedure shall
include what actions the operator is required to take in
the event of a low-pressure or high-pressure hydrogen
release during discharging activity. Schematic design
documents shall be provided illustrating the arrange-
ment of piping, regulators and equipment settings. The
220 2012 INTERNATIONAL FIRE CODE°
construction documents shall illustrate the piping and
regulator arrangement and shall be shown in spatial
relation to the location of the compressor, storage ves-
sels and emergency shutdown devices.
2311.8.1.2 Atmospheric venting of hydrogen from
motor vehicle fuel storage containers. When atmo-
spheric venting is used for the discharge of hydrogen
from motor vehicle fuel storage tanks, such venting
shall be in accordance with Sections 2311.8.1.2.1
through 2311.8.1.2.4.
2311.8.1.2.1 Defueling equipment required at
vehicle maintenance and repair facilities. All
facilities for repairing hydrogen systems on hydro-
gen -fueled vehicles shall have equipment to defuel
vehicle storage tanks. Equipment used for defueling
shall be listed and labeled for the intended use.
2311.8.1.2.1.1 Manufacturer's equipment
required. Equipment supplied by the vehicle
manufacturer shall be used to connect the vehicle
storage tanks to be defueled to the vent pipe sys-
tem.
2311.8.1.2.1.2 Vent pipe maximum diameter.
Defueling vent pipes shall have a maximum
inside diameter of 1 inch (25 mm).
2311.8.1.2.1.3 Maximum flow rate. The maxi-
mum rate of hydrogen flow through the vent pipe
system shall not exceed 1,000 cfm at NTP (0.47
m3/s) and shall be controlled by means of the
manufacturer's equipment, at low pressure and
without adjustment.
2311.8.1.2.1.4 Isolated use. The vent pipe used
for defueling shall not be connected to another
venting system used for any other purpose.
2311.8.1.2.2 Construction documents. Construc-
tion documents shall be provided illustrating the
defueling system to be utilized. Plan details shall be
of sufficient detail and clarity to allow for evaluation
of the piping and control systems to be utilized and
include the method of support for cylinders, contain-
ers or tanks to be used as part of a closed transfer
system, the method of grounding and bonding, and
other requirements specified herein.
2311.8.1.2.3 Stability of cylinders, containers and
tanks. A method of rigidly supporting cylinders,
containers or tanks used during the closed transfer
system discharge or defueling of hydrogen shall be
provided. The method shall provide not less than
two points of support and shall be designed to resist
lateral movement of the receiving cylinder, con-
tainer or tank. The system shall be designed to resist
movement of the receiver based on the highest gas -
release velocity through valve orifices at the
receiver's rated service pressure and volume. Sup-
porting structure or appurtenance used to support
receivers shall be constructed of noncombustible
MOTOR FUEL -DISPENSING FACILITIES AND REPAIR GARAGES
materials in accordance with the International
Building Code.
2311.8.1.2.4 Grounding and bonding. Cylinders,
containers or tanks and piping systems used for
defueling shall be bonded and grounded. Structures
or appurtenances used for supporting the cylinders,
containers or tanks shall be grounded in accordance
with NFPA 70. The valve of the vehicle storage tank
shall be bonded with the defueling system prior to
the commencement of discharge or defueling opera-
tions.
2311.8.2 Repair of hydrogen piping. Piping systems
containing hydrogen shall not be opened to the atmosphere
for repair without first purging the piping with an inert gas
to achieve 1 percent hydrogen or less by volume. Defuel-
ing operations and exiting purge flow shall be vented in
accordance with Section 2311.8.1.2.
2311.8.3 Purging. Each individual manufactured compo-
nent of a hydrogen generating, compression, storage or
dispensing system shall have a label affixed as well as a
description in the installation and owner's manuals
describing the procedure for purging air from the system
during startup, regular maintenance and for purging
hydrogen from the system prior to disassembly (to admit
air).
For the interconnecting piping between the individual
manufactured components, the pressure rating must be at
least 20 times the absolute pressure present in the piping
when any hydrogen meets any air.
2311.8.3.1 System purge required. After installation,
repair or maintenance, the hydrogen piping system
shall be purged of air in accordance with the manufac-
turer's procedure for purging air from the system.
2012 INTERNATIONAL FIRE CODE° 221