California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 7 - General Industry Safety Orders › Group 20 - Flammable Liquids, Gases and Vapors › Article 139 - Oxygen › Section 5502 - Distance Between Bulk Oxygen Systems and Exposures

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) Except as provided in (15), the minimum
						distance from any bulk oxygen storage container to exposures, measured in the
						most direct line (except as indicated in (5), shall be as indicated in (1) to
						(15) inclusive.
(1) 50 feet from buildings of
						wood frame construction.
(2) Not
						less than one foot (or other distance to permit system maintenance) from
						buildings of other than wood frame construction, including fire resistive,
						heavy timber, noncombustible, and ordinary construction.
(3) At least 10 feet from any opening in
						walls of adjacent structures. This provision shall apply to all elements of a
						bulk oxygen system where the oxygen storage is high pressure gas. Where the
						storage is as liquid, this provision shall apply to only pressure regulators,
						safety devices, vaporizers, manifolds, and interconnecting piping.
(4) Flammable and Combustible Liquid Storage
						Aboveground:
Distance
								  (feet)
Capacity (gallons)
25
1000 or less
50
1001 or more
(5) Flammable and Combustible Liquid Storage
						Belowground:
Distance Measured
								  Horizontally
Distance from Oxygen
								  Storage
from Oxygen Storage
								  Container
Container to Filling and Vent
to Tank
								  (feet)
Connections or Openings to Tank
								  (feet)
15
25
(6) 25 feet from quantities of flammable
						gases not exceeding 1,000 gallons of liquefied gases, or 25,000 cubic feet NTP
						for nonliquefied or dissolved gases. For quantities in excess of these, the
						distance shall be 50 feet.
(7) 50
						feet from solid materials which burn rapidly, such as excelsior or
						paper.
(8) 25 feet from solid
						materials which burn slowly, such as coal and heavy timber.
(9) 75 feet in one direction and 35 feet in
						approximately 90 direction from confining walls (not including fire walls less
						than 20 feet high) to provide adequate ventilation in courtyards and similar
						confining areas.
(10) 25 feet from
						congested areas such as offices, lunchrooms, locker rooms, time clock areas,
						and similar locations where employees may congregate.
(11) 50 feet from places of public
						assembly.
(12) 50 feet from areas
						occupied by nonambulatory patients.
(13) 10 feet from any public sidewalk or
						parked vehicles.
(14) 5 feet from
						any line of adjoining property which may be built upon.
(15) The distances in (1), (4) to (8)
						inclusive, (13), and (14) do not apply where protective structures, such as
						fire walls or insulated liquid oxygen storage containers, interrupt the
						line-of-sight between uninsulated portions of the bulk oxygen storage
						installation and the exposure. In such cases, the uninsulated bulk oxygen
						installation shall be a minimum distance of 1 foot (or greater distance if
						required for system maintenance) from the protective structure. (Title 24, Part
						6, Section T8-5502)