6109.10 Storage within buildings not accessible to the public.

The quantity of LPG containers allowed in one storage location in a building not accessible to the public, such as an industrial building, shall not exceed a maximum capacity of 300 pounds (136 kg) of LPG. Where LPG containers are stored in more than one location on the same floor of a building, the storage areas shall be separated by a minimum of 300 feet (91 440 mm).

   Exception: Storage of LPG at construction sites shall be in accordance with the rules.

6109.11 Reserved.

6109.12 Location of outdoor storage.

Outdoor storage, including storage of containers for sale and containers connected for use, shall be located not less than 20 feet (6096 mm) from building openings, 20 feet (6096 mm) from any motor vehicle fuel dispenser and 10 feet (3048 mm) from any combustible material and, as applicable, in accordance with FC Table 6109.12. Outdoor storage of LPG shall be limited to not more than 400 pounds (181.6 kg) of LPG and shall be located at or above grade level.

   Exception: Storage of LPG at construction sites shall be in accordance with the rules.

FC Table 6109.12
Distances from Outdoor Lpg Storage Area to Exposures

Type of Outdoor Exposure	LPG Storage Area More than 100 Pounds LPG up to Maximum 400 Pounds LPG Minimum Distance to Exposure (feet)
Building or structure of combustible construction	10
Subway entrance, exit or other opening	25
Flammable and combustible liquids Aboveground – 1,000 gallons or less	10 a
Flammable and combustible liquids Aboveground – in excess of 1,000 gallons	20 a
Flammable and combustible liquids Below ground tank – 1,000 gallons or less	10 a
Flammable and combustible liquids Below ground tank – 1,000 gallons or less Vent or fill opening of tank	15 a
Flammable and combustible liquids Below ground tank – in excess of 1,000 gallons	15 a
Flammable and combustible liquids Below ground tank – in excess of 1,000 gallons Vent or fill opening of tank	15 a
Flammable gas storage area, 1,500 SCF or less	10 a
Flammable gas storage area, More than 1,500 SCF up to maximum 3,500 SCF	20 a
Oxygen storage – 20,000 SCF or less	In accordance with NFPA 51 a
Oxygen storage – in excess of 20,000 SCF	In accordance with NFPA 55 a
Fast-burning solids, such as ordinary lumber, excelsior or paper	10 a
Slow-burning solids, such as heavy timber or coal	10 a
Air compressor intakes or inlets to heating, ventilating or air-conditioning equipment	5
Group A occupancies and public gathering places	25
Public sidewalks and parked motor vehicles	10
Public streets, private roads and lot lines	10 a

For SI: 1 foot = 304.8 mm, 1 cubic foot = 0.02832 m3, 1 gallon = 3.785 L.

a.   The minimum required distances may be reduced to 5 feet when protective structures having a minimum fire-resistance rating of 2 hours interrupt the line of sight between the container and the exposure. The protective structure shall be at least 5 feet from the exposure. The configuration of the protective structure shall be designed to allow natural ventilation to prevent the accumulation of hazardous gas concentrations.

6109.12.1 Proximity to hazards.

Storage shall not be located where the stored LPG would be exposed to the following hazards in the event of the failure of their structure or containment systems:

   1.   Electric power lines.

   2.   Piping containing flammable or combustible liquids.

   3.   Piping containing flammable gases.

   4.   Piping containing oxidizing materials.

6109.13 Protection of containers.

Containers shall be stored within a suitable enclosure or otherwise protected against tampering. Vehicular protection shall be provided as required by the commissioner.

6109.14 Electrical equipment.

Except as otherwise provided in NFPA 58, electrical equipment within 3 feet (914 mm) in any direction of an outdoor LPG facility shall comply with the Class I, Division 2 wiring requirements of the Electrical Code for hazardous locations, unless electrical equipment is separated from such area by a wall or other solid partition having no openings.