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 145 - Tank Storage › Section 5601 - Tank Openings Other than Vents for Tanks Inside Buildings

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) Connections for all tank openings shall
						be liquid-tight.
(b) Each
						connection to a tank inside of buildings through which liquid can normally flow
						shall be provided with an internal or an external valve located as close as
						practical to the shell of the tank.
(c) Flammable or combustible liquid storage
						tanks located inside of buildings, except in one-story buildings designed and
						protected for flammable or combustible liquid storage, shall be provided with
						an automatic-closing heat-actuated valve on each withdrawal connection below
						the liquid level, except for connections used for emergency disposal, to
						prevent continued flow in the event of fire in the vicinity of the tank. This
						function may be incorporated in the valve required in (b), and if a separate
						valve, shall be located adjacent to the valve required in (b).
(d) Openings for manual gaging of Category 1,
						2 or 3 flammable liquids, if independent of the fill pipe, shall be provided
						with a vaportight cap or cover. Openings shall be kept closed when not gaging.
						Each such opening for any liquid shall be protected against liquid overflow and
						possible vapor release by means of a spring loaded check valve or other
						approved device. Substitutes for manual gaging include, but are not limited to,
						heavy-duty flat gage glasses, magnetic, hydraulic or hydrostatic remote reading
						devices and sealed float gages.
(e)
						For Category 2 flammable liquids and Category 3 flammable liquids with a
						flashpoint below 100 °F (37.8 °C), other than crude oils, gasolines and
						asphalts, the fill pipe shall be so designed and installed as to minimize the
						possibility of generating static electricity by terminating within six inches
						of the bottom of the tank.
(f) The
						fill pipe inside of the tank shall be installed to avoid excessive vibration of
						the pipe.
(g) The inlet of the fill
						pipe for Category 1, 2, 3, and 4 flammable liquids shall be located outside of
						buildings at a location free from any source of ignition and not less than five
						feet away from any building opening. The inlet of the fill pipe for any liquid
						shall be closed and liquid-tight when not in use, and the fill connection shall
						be properly identified.
(h) Tanks
						storing Category 1, 2, 3, and 4 flammable liquids inside buildings shall be
						equipped with a device, or other means shall be provided, to prevent overflow
						into the building. Suitable devices include, but are not limited to, a float
						valve, a preset meter on the fill line, a valve actuated by the weight of the
						tank contents, a low head pump which is incapable of producing overflow, or a
						liquid-tight overflow pipe at least one pipe size larger than the fill pipe
						discharging by gravity back to the outside source of liquid or to an approved
						location.
1.
						  Amendment of subsections (d)-(e) and (g)-(h) and new NOTE filed 5-5-2014;
						  operative 5-6-2014 pursuant to Government Code section
						  11343.4(b)(3)
						  (Register 2014, No. 19).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code.