Okla. Admin. Code § 252:100-37-15
Current through Vol. 42, No. 1, September 16, 2024
Section 252:100-37-15 - Storage of VOCs(a)Storage capacities greater than 40,000 gallons. Each VOC storage vessel with a capacity of more than 40,000 gal (151 m3) shall be a pressure vessel capable of maintaining working pressures that prevent the loss of VOC to the atmosphere or shall be equipped with one of the following vapor-loss control devices. (1) An external floating roofthat consists of a pontoon typeor double-deck type cover, or a fixed roof with an internal-floating cover. The cover shall rest on the surface of the liquid contents at all times (i. e., off the leg supports), except during initial fill, when the storage vessel is completely emptied, or during refilling. When the cover is resting on the leg supports, the process of filling, emptying, or refilling shall be continuous and shall be accomplished as rapidly as possible. The floating roof shall be equipped with a closure seal, or seals, to close the space between the cover edge and vessel wall. Floating roofs are not appropriate control devices if the VOCs have a vapor pressure of 11.1 psia (76.6 kPa) or greater under actual conditions. All gauging and sampling devices shall be gas-tight except when gauging or sampling is taking place.(2) A vapor-recovery system that consists of a vapor-gathering system capable of collecting 85 percent or more of the uncontrolled VOCs that would otherwise be emitted to the atmosphere and a vapor-disposal system capable of processing these VOCs to prevent their emission to the atmosphere. All vessel gauging and sampling devices shall be gas-tight except when gauging or sampling is taking place.(3) Other equipment or methods that are of equal efficiency for purposes of air pollution control may be used when approved by the Division Director prior to installation.(b)Storage capacities of 400 gallons and greater. Each VOC storage vessel with a capacity of 400 gal (1.5 m3) or more shall be equipped with a permanent submerged fill pipe or a vapor-recovery system as required in 252:100-37-15(a) (2).(c)Exemptions. VOC storage vessels that are subject to equipment standards (e. g., a fixed roof in combination with an internal floating cover, an external floating roof, or a closed vent system and control device) in 40 CFR 60 Subparts K, Ka, or Kb are exempt from the requirements of 252:100-37-15(a) and (b).Okla. Admin. Code § 252:100-37-15
Added at 11 Ok Reg 977, eff 1-14-94 (emergency); Added at 11 Ok Reg 2031, eff 5-26-94; Amended at 16 Ok Reg 1767, eff 6-11-99