SMALLER PROPANE TANKS
Your qualified installer might use the diagram below for a typical cylinder container installation per NFPA Pamphlet 58. (This figure is for illustrative purposes only; always check to determine what codes shall govern.)
(This figure for illustrative purposes only; code shall govern.)
Note 1: 5-ft minimum from relief valve in any direction away from any exterior source of ignition, openings into direct-vent appliances, or mechanical ventilation air intakes. Refer to 3.2.2.2(b).
Note 2: If the cylinder is filled on site from bulk truck, the filling connection and vent valve must be at least 10 feet from any exterior source of ignition, openings into direct-vent appliances, or mechanical ventilation air intakes. Refer to 3.2.2.2(d).
LARGER ASME PROPANE CYLINDERS
Your qualified installer might use the diagram below for a typical aboveground ASME container installation per NFPA Pamphlet 58. (This figure is for illustrative purposes only; always check to determine what codes shall govern.)
Note 1: Regardless of its size, any ASME container filled on site must be located so that the filling connection and fixed maximum liquid level gauge are at least 10 feet from any external source of ignition (e.g., open flame, window A/C, compressor), intake to direct-vent gas appliances, or intake to a mechanical ventilation system. Refer to 3.2.2.2(d).
Note 2: Refer to 3.2.2.2(c).
Note 3: This distance may be reduced to no less than 10 feet for a single container of 1200 gal (4.5 m3) water capacity or less, provided such container is at least 25 feet from any other LP-Gas container or more than 125 gal (0.5 m3) water capacity. Refer to 3.2.2.2(e).
UNDERGROUND PROPANE CYLINDERS
Your qualified installer might use the diagram below for a typical underground ASME container installation per NFPA Pamphlet 58. (This figure is for illustrative purposes only; always check to determine what codes shall govern.)
Note 1: The relief valve, filling connection, and liquid level gauge vent connection at the container must be at least 10 ft. from any exterior source of ignition, openings into direct-vent appliances, or mechanical ventilation air intakes. Refer to 6.3.10 Note 2: No part of an underground tank shall be less than 10 ft. from an important building or line of adjoining property that may be built upon. Refer to 6.3.4.2
