Okla. Admin. Code § 252:100-37-16

Current through Vol. 42, No. 1, September 16, 2024

Section 252:100-37-16 - Loading of VOCs

(a)Loading facilities with throughput greater than 40,000 gallons/day. Each VOC loading facility with a throughput greater than 40,000 gal/d (151,416 l/d) from its aggregate loading pipes shall be equipped with a vapor-collection and disposal system unless all tank trucks or trailers are bottom loaded with hatches closed.

(1)Vapor-collection and disposal system.

(A)Vapor-collection portion of the system.

(i) When loading VOCs through the hatches of a tank truck or trailer, using a loading arm equipped with a vapor collecting adaptor, a pneumatic, hydraulic, or mechanical means shall be provided to ensure a vapor-tight seal between the adaptor and the hatch.

(ii) When loading is effected through means other than hatches, all loading and vapor lines shall be equipped with fittings that make vapor-tight connections and which must be closed when disconnected or which close automatically when disconnected.

(B)Vapor-disposal portion of the system. The vapor-disposal portion of the system shall consist of:

(i) a vapor-liquid absorber system with a minimum recovery efficiency of 90 percent by weight of all the VOC vapors and gases entering such disposal system; or,

(ii) a variable-vapor space tank, compressor, and fuel-gas system of sufficient capacity to receive all VOC vapors and gases displaced from the tank trucks and trailers being loaded.

(2)Prevention of VOC drainage. A means shall be provided in either loading system specified in subsection (a) to prevent VOC drainage from the loading device when it is removed from any tank truck or trailer, or to accomplish complete drainage before removal.

(b)Loading facilities with throughput equal to or less than 40,000 gallons per day.

(1) Each loading pipe at a VOC loading facility with an aggregate throughput of 40,000 gal/d (151,416 l/d) or less shall be equipped with a system for submerged filling of tank trucks or trailers which is installed and operated to maintain a 97 percent submergence factor.

(2) Paragraph 252:100-37-16(b)(1) applies to any facility that loads VOCs into any tank truck or trailer with a capacity greater than 200 gal (757 l) which is designed for transporting VOCs.

(c)Exemptions.

(1) Loading facilities subject to the requirements of 40 CFR 60 Subpart XX or 40 CFR 63 Subpart R are exempt from the requirements of 252:100-37-16(a) and (b).

(2) Loading operations at natural gas compressor stations are exempt from the requirements of 252:100-37-16(a) and (b). For the purposes of this section, natural gas compressor station means any permanent combination of one or more compressors that move natural gas at increased pressure through gathering or transmission pipelines, or into or out of storage. This includes, but is not limited to, gathering, boosting, and transmission compressor stations.

Okla. Admin. Code § 252:100-37-16

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

Amended by Oklahoma Register, Volume 39, Issue 24, September 1, 2022, eff. 9/15/2022