Okla. Admin. Code § 165:26-2-31

Current through Vol. 42, No. 4, November 1, 2024

Section 165:26-2-31 - Double-walled tanks

Double-walled tanks do not require additional containment if all the following conditions are met:

(1) The capacity of the tank does not exceed 50,000 gallons (189,000 liters).

(2) All piping connections to the tanks are made above the normal maximum liquid level.

(3) A mechanism is provided to prevent the release of liquid from the tank by siphon flow.

(4) A mechanism is provided for determining the level of liquid in the tank, which is accessible to the delivery operator.

(5) A mechanism is provided to prevent overfilling by sounding an alarm when the liquid level in the tank reaches 90 percent of capacity and by automatically stopping the delivery of liquid to the tank when the level in the tank reaches 95 percent of capacity. In no case will these provisions restrict or interfere with the proper functioning of the normal vent or the emergency vent.

(6) Spacing between adjacent tanks is not less than 3 ft (0.9 meters).

(7) The tank is capable of resisting damage from the impact of a motor vehicle or suitable collision barriers are provided in locations where the tank is exposed to traffic.

(8) Where the interstitial space is enclosed, it is provided with emergency venting.

(9) A means is provided to establish the integrity of the interstitial space of the double wall tank.

Okla. Admin. Code § 165:26-2-31

Added at 21 Ok Reg 2079, eff 7-1-04; Amended at 22 Ok Reg 1752, eff 7-1-05

Amended by Oklahome Register, Volume 33, Issue 23, August 15, 2016, eff. 8/25/2016