Loading...
When there is a possibility of water intruding into the space between the primary tank and secondary containment by precipitation, infiltration, or other means, the facility shall be designed and constructed with the capability to monitor and remove such water intrusion. Secondary containment systems shall have a nationally recognized testing laboratory listing or a Los Angeles Fire Department Equipment Approval.
All underground piping in connection with underground tanks shall comply with the following:
1. Piping shall lead out of the top.
2. Piping shall be covered with at least 1 foot of earth or 4 inches of earth and 4 inches of concrete except for necessary riser pipes.
3. Piping shall be equipped with means for disconnection.
4. At any point of change from the vertical to the horizontal or from the horizontal to the vertical, there shall be installed an approved flex connector assembly.
Fill pipes of underground tanks shall not exceed 8 inches inside diameter and shall be kept closed with a tight- fitting cap. Every fill opening shall be located in a fill box outside of buildings except openings for underground waste oil tanks used in connection with public garages or auto fueling stations inside buildings. Fill openings inside buildings shall be equipped in a manner to prevent escape of vapors to the inside of the buildings.
Tanks, pressure vessels, vaporizers, and associated equipment used in conjunction with liquid or gaseous hazardous materials at ambient temperatures and pressures in excess of 0.5 psig shall be in accordance with Sections 57.5003.2.4.3.1 through 57.5003.2.4.3.6.
Above-ground tanks and pressure vessels used to store liquid or gaseous hazardous materials at ambient temperatures and pressures in excess of 0.5 psig shall be in accordance with the following:
1. Tanks and pressure vessels installed above ground shall be provided with substantial masonry or noncombustible structural supports so installed as to prevent accidental movement.
2. Horizontal, above-ground tanks and pressure vessels shall be mounted on saddles in such a manner as to permit expansion and contraction, not only of the container but also of the connected piping. Only two such saddles shall be used and every container shall be supported to prevent the concentration of excessive loads on the supporting portion of the shell.
Underground tanks and pressure vessels used to store liquid or gaseous hazardous materials at ambient temperatures and pressures in excess of 0.5 psig shall be in accordance with Sections 57.5003.2.4.3.2.1 through 57.5003.2.4.3.2.8.
Loading...