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C. Framing Enclosure for LP Gas Supply System
If you build an enclosure for an LP gas cylinder, follow these
recommended specifications and local codes:
Ventilation
Enclosures must be ventilated by openings at the level of
the cylinder valve and at floor level. Effectiveness must be
determined with the cylinder(s) in place.
• One side of the enclosure must be completely open.
• For an enclosure having four sides, a top and a bottom:
- At least two ventilation openings at cylinder valve level
shall be provided in the side wall, equally sized, spaced
at 180 degrees (3.14 rad), and unobstructed. Each
opening must have a total free area of not less than
1/2 square inch per pound (3.2 sq. cm/kg) of stored
fuel capacity and not less than a total free area of 10
square inches (64.5 sq. cm).
- Ventilation opening(s) must be provided at floor level
and shall have a total free area of not less than 1/2
square inch per pound (3.2 sq. cm/kg) of stored fuel
capacity and not less than a total free area of 10
square inches (64.5 sq. cm). If ventilation openings
at floor level are in a side wall, there must be a least
two openings. The bottom of the openings must be
at floor level and the upper edge can't be more than
5 in. (127 mm) above the floor. The openings must
be equally sized, spaced at 180 deg (3.14 rad) and
unobstructed.
- Every opening must have minimum dimensions to
permit the entrance of a 1/8 inch (3.2 mm) diameter
rod.
Accessibility
• Cylinder valves must be readily accessible for hand
operation. A door on the enclosure to gain access to the
cylinder valves is acceptable, provided it is non-locking
and can be opened without the use of tools.
• The design of the enclosure must be such that:
-
The LP gas supply cylinder(s) can be connected,
disconnected and the connections inspected and
tested outside the cylinder enclosure.
-
Those connections which could be disturbed when
installing the cylinder(s) in the enclosure can be leak
tested inside the enclosure.
-
Be certain to mount or set the LP gas cylinder on a flat
stable surface and retain it to prevent it from tipping.
Minimum Clearances
•
There must be a minimum clearance of 2 in. (50.8 mm)
between the lower surface of the floor of the LP gas supply
cylinder enclosure and the ground.
Outdoor Fire Pits - 2009
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