The following words and terms shall, for the purposes of this chapter and as used elsewhere in this code, have the meanings shown herein.
LIQUEFIED PETROLEUM GAS (LP-gas). A material which is composed predominantly of the following hydrocarbons or mixtures of them: propane, propylene, butane (normal butane or isobutane) and butylenes.
LP-gas containers shall not be used in a basement, pit or similar location where heavier-than-air gas might collect. LP-gas containers shall not be used in an above-grade underfloor space or basement unless such location is provided with an approved means of ventilation.
Within the limits established by law restricting the storage of liquefied petroleum gas for the protection of heavily populated or congested areas, the aggregate capacity of any one installation shall not exceed a water capacity of 2,000 gallons (7570 L) (see Section 3 of the Sample Ordinance for Adoption of the International Fire Code on page xiii).
Exception: In particular installations, this capacity limit shall be determined by the fire code official, after consideration of special features such as topographical conditions, nature of occupancy, and proximity to buildings, capacity of proposed LP-gas containers, degree of fire protection to be provided and capabilities of the local fire department.
|LP-GAS CONTAINER CAPACITY
|MINIMUM SEPARATION BETWEEN LP-GAS CONTAINERS AND
BUILDINGS, PUBLIC WAYS OR LOT LINES OF ADJOINING
PROPERTY THAT CAN BE BUILT UPON
BETWEEN LP-GAS CONTAINERSb, c
|Mounded or underground
|Less than 125c, d||10||5e||None|
|125 to 250||10||10||None|
|251 to 500||10||10||3|
|501 to 2,000||10||25e, f||3|
|2,001 to 30,000||50||50||5|
|30,001 to 70,000||50||75||(0.25 of sum of diameters of
adjacent LP-gas containers)
|70,001 to 90,000||50||100|
|90,001 to 120,000||50||125|
- Minimum distance for underground LP-gas containers shall be measured from the pressure relief device and the filling or liquid-level gauge vent connection at the container, except that all parts of an underground LP-gas container shall be 10 feet or more from a building or lot line of adjoining property which can be built upon.
- For other than installations in which the overhanging structure is 50 feet or more above the relief-valve discharge outlet. In applying the distance between buildings and ASME LP-gas containers with a water capacity of 125 gallons or more, a minimum of 50 percent of this horizontal distance shall also apply to all portions of the building which project more than 5 feet from the building wall and which are higher than the relief valve discharge outlet. This horizontal distance shall be measured from a point determined by projecting the outside edge of such overhanging structure vertically downward to grade or other level upon which the LP-gas container is installed. Distances to the building wall shall not be less than those prescribed in this table.
- When underground multicontainer installations are comprised of individual LP-gas containers having a water capacity of 125 gallons or more, such containers shall be installed so as to provide access at their ends or sides to facilitate working with cranes or hoists.
- At a consumer site, if the aggregate water capacity of a multicontainer installation, comprised of individual LP-gas containers having a water capacity of less than 125 gallons, is 500 gallons or more, the minimum distance shall comply with the appropriate portion of Table 3804.3, applying the aggregate capacity rather than the capacity per LP-gas container. If more than one such installation is made, each installation shall be separated from other installations by at least 25 feet. Minimum distances between LP-gas containers need not be applied.
- The following shall apply to above-ground containers installed alongside buildings:
- LP-gas containers of less than a 125-gallon water capacity are allowed next to the building they serve when in compliance with Items 2, 3 and 4.
- Department of Transportation (DOTn) specification LP-gas containers shall be located and installed so that the discharge from the container pressure relief device is at least 3 feet horizontally from building openings below the level of such discharge and shall not be beneath buildings unless the space is well ventilated to the outside and is not enclosed for more than 50 percent of its perimeter. The discharge from LP-gas container pressure relief devices shall be located not less than 5 feet from exterior sources of ignition, openings into direct-vent (sealed combustion system) appliances or mechanical ventilation air intakes.
- ASME LP-gas containers of less than a 125-gallon water capacity shall be located and installed such that the discharge from pressure relief devices shall not terminate in or beneath buildings and shall be located at least 5 feet horizontally from building openings below the level of such discharge and not less than 5 feet from exterior sources of ignition, openings into direct vent (sealed combustion system) appliances, or mechanical ventilation air intakes.
- The filling connection and the vent from liquid-level gauges on either DOTn or ASME LP-gas containers filled at the point of installation shall not be less than 10 feet from exterior sources of ignition, openings into direct vent (sealed combustion system) appliances or mechanical ventilation air intakes.
- This distance is allowed to be reduced to not less than 10 feet for a single LP-gas container of 1,200-gallon water capacity or less, provided such container is at least 25 feet from other LP-gas containers of more than 125-gallon water capacity.
Multiple LP-gas container installations with a total water storage capacity of more than 180,000 gallons (681 300 L) [150,000-gallon (567 750 L) LP-gas capacity] shall be subdivided into groups containing not more than 180,000 gallons (681 300 L) in each group. Such groups shall be separated by a distance of not less than 50 feet (15 240 mm), unless the containers are protected in accordance with one of the following:
- Mounded in an approved manner.
- Protected with approved insulation on areas that are subject to impingement of ignited gas from pipelines or other leakage.
- Protected by firewalls of approved construction.
- Protected by an approved system for application of water as specified in Table 6.4.2 of NFPA 58.
- Protected by other approved means.
Where one of these forms of protection is provided, the separation shall not be less than 25 feet (7620 mm) between LP-gas container groups.
"No Smoking" signs complying with Section 310 shall be posted when required by the fire code official. Smoking within 25 feet (7620 mm) of a point of transfer, while filling operations are in progress at LP-gas containers or vehicles, shall be prohibited.
Control of other sources of ignition shall comply with Chapter 3 of this code and Section 6.22 of NFPA 58.
Storage of portable LP-gas containers of 1,000 pounds (454 kg) or less, whether filled, partially filled or empty, at consumer sites or distribution points, and for resale by dealers or resellers shall comply with Sections 3809.2 through 3809.14.
- LP-gas containers that have not previously been in LP-gas service.
- LP-gas containers at distribution plants.
- LP-gas containers at consumer sites or distribution points, which are connected for use.
LP-gas containers shall not be stored in a basement, pit or similar location where heavier-than-air gas might collect. LP-gas containers shall not be stored in above-grade underfloor spaces or basements unless such location is provided with an approved means of ventilation.
- Adequate vents shall be provided to the outside at both top and bottom, located at least 5 feet (1524 mm) from building openings.
- The entire area shall be classified for the purposes of ignition source control in accordance with Section 6.22 of NFPA 58.
Storage outside of buildings of LP-gas containers awaiting use, resale or part of a cylinder exchange program shall be located in accordance with Table 3809.12.
|QUANTITY OF LP-GAS STORED (pounds)||MINIMUM SEPARATION DISTANCE FROM STORED LP-GAS CYLINDERS TO (feet):|
|Nearest important building or group of buildings or line of adjoining property that may be built upon||Line of adjoining property occupied by schools, places of religious worship, hospitals, athletic fields or other points of public gathering; busy thoroughfares; or sidewalks||LP-gas dispensing station||Doorway or opening to a building with two or more means of egress||Doorway or opening to a building with one means of egress||Combustible materials||Motor vehicle fuel dispenser|
|720 or less||0||0||5||5||10||10||20|
|721 - 2,500||0||10||10||5||10||10||20|
|2,501 - 6,000||10||10||10||10||10||10||20|
|6,001 - 10,000||20||20||20||20||20||10||20|
LP-gas containers whose use has been temporarily discontinued shall comply with all of the following:
- Be disconnected from appliance piping.
- Have LP-gas container outlets, except relief valves, closed or plugged.
- Be positioned with the relief valve in direct communication with the LP-gas container vapor space.
LP-gas tank vehicles parked at any one point for longer than1 hour shall be located as follows: