Where a single LP-gas container is more than 2,000 gallons (7570 L) in water capacity or the aggregate water capacity of LP-gas containers is more than 4,000 gallons (15 140 L), the installer shall submit construction documents for such installation.
The following terms are defined in Chapter 2:
LIQUEFIED PETROLEUM GAS (LP-gas).
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.
Exception: Use with self-contained torch assemblies in accordance with Section 6188.8.131.52.
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 Legislation for Adoption of the International Fire Code on page xxi).
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 containers shall be located with respect to buildings, public ways and lot lines of adjoining property that can be built upon, in accordance with Table 6104.3.
LOCATION OF LP-GAS CONTAINERS
|MINIMUM SEPARATION BETWEEN LP-GAS CONTAINERS AND BUILDINGS, PUBLIC|
WAYS OR LOT LINES OF ADJOINING PROPERTY THAT CAN BE BUILT UPON
|MINIMUM SEPARATION |
|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|
For SI: 1 foot = 304.8 mm, 1 gallon = 3.785 L.
- 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 6104.3, 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
- 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.
DOTn cylinders in stationary service that are filled on site and therefore are not under the jurisdiction of DOTn either shall be requalified in accordance with DOTn requirements or shall be visually inspected within 12 years of the date of manufacture or within 5 years from May 1, 2008, whichever is later, and within every 5 years thereafter, in accordance with the following:
- Any cylinder that fails one or more of the criteria in Item 3 shall not be refilled or continued in service until the condition is corrected.
- Personnel shall be trained and qualified to perform inspections.
- Visual inspection shall be performed in accordance with the following:
- 3.1. The cylinder is checked for exposure to fire, dents, cuts, digs, gouges, and corrosion according to CGA C-6, Standards for Visual Inspection of Steel Compressed Gas Cylinders, except that paragraph 4.2.1(1) of that standard (which requires tare weight certification), shall not be part of the required inspection criteria.
- 3.2. The cylinder protective collar (where utilized) and the foot ring are intact and are firmly attached.
- 3.3. The cylinder is painted or coated to retard corrosion.
- 3.4. The cylinder pressure relief valve indicates no visible damage, corrosion of operating components, or obstructions.
- 3.5. There is no leakage from the cylinder or its appurtenances that is detectable without the use of instruments.
- 3.6. The cylinder is installed on a firm foundation and is not in contact with the soil.
- 3.7. A cylinder that passed the visual inspection shall be marked with the month and year of the examination followed by the letter “E” (example: 10-01E, indicating requalification in October 2001 by the external inspection method).
- 3.8. The results of the visual inspection shall be documented, and a record of the inspection shall be retained for a 5-year period.
Exception: Any inspection procedure outlined in Items 3.1 through 3.8 that would require a cylinder to be moved in such a manner that disconnection from the piping system would be necessary shall be omitted, provided the other inspection results do not indicate further inspection is warranted.
“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 6109.2 through 6109.14.
- 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.
Exception: Department of Transportation (DOTn) specification cylinders with a maximum water capacity of 21/2 pounds (1 kg) for use in completely self-contained hand torches and similar applications. The quantity of LP-gas shall not exceed 20 pounds (9 kg).
The construction of such buildings and rooms shall comply with requirements for Group H occupancies in the International Building Code, Chapter 10 of NFPA 58 and both of the following:
- 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 6109.12.
SEPARATION FROM EXPOSURES OF LP-GAS CONTAINERS AWAITING USE, RESALE OR EXCHANGE STORED OUTSIDE OF BUILDINGS
|QUANTITY OF |
|MINIMUM SEPARATION DISTANCE FROM STORED LP-GAS CYLINDERS TO (feet):|
|Nearest important |
building or group of
buildings or line of
adjoining property thatmay 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
|Doorway or |
opening to abuilding with two or
more means ofegress
|Doorway or |
opening to abuilding with
one means ofegress
|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|
For SI: 1 foot = 304.8 mm, 1 pound = 0.454 kg.
In addition to other applicable requirements of this chapter, facilities operating LP-gas cylinder exchange stations that are accessible to the public shall comply with the following requirements.
- Cylinders shall be secured in a lockable, ventilated metal cabinet or other approved enclosure.
- Cylinders shall be accessible only by authorized personnel or by use of an automated exchange system in accordance with Section 6109.15.1.
- A sign shall be posted on the entry door of the business operating the cylinder exchange stating “DO NOT BRING LP-GAS CYLINDERS INTO THE BUILDING” or similar approved wording.
- An emergency contact information sign shall be posted within 10 feet (3048 mm) of the cylinder storage cabinet. The content, lettering, size, color and location of the required sign shall be as required by the fire code official.
Cylinder exchange stations that include an automated vending system for exchanging cylinders shall comply with the following additional requirements:
- The vending system shall only permit access to a single cylinder per individual transaction.
- Cabinets storing cylinders shall be designed such that cylinders can only be placed inside when they are oriented in the upright position.
- Devices operating door releases for access to stored cylinders shall be permitted to be pneumatic, mechanical or electrically powered.
- Electrical equipment inside of or within 5 feet (1524 mm) of a cabinet storing cylinders, including but not limited to electronics associated with vending operations, shall comply with the requirements for Class I, Division 2 equipment in accordance with NFPA 70.
- A manual override control shall be permitted for use by authorized personnel. On newly installed cylinder exchange stations, the vending system shall not be capable of returning to automatic operation after a manual override until the system has been inspected and reset by authorized personnel.
- Inspections shall be conducted by authorized personnel to verify that all cylinders are secured, access doors are closed and the station has no visible damage or obvious defects, which necessitate placing the station out of service. The frequency of inspections shall be as specified by the fire code official.
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 than 1 hour shall be located as follows:
- Off public streets, highways, public avenues or public alleys.
- Inside of a bulk plant.
- At other approved locations not less than 50 feet (15 240 mm) from buildings other than those approved for the storage or servicing of such vehicles.