---
kind: "section"
citation: "40 C.F.R. § 65.144"
title: "40"
number: "65.144"
heading: "Fuel gas systems and processes to which storage vessel, transfer rack, or equipment leak regulated material emissions are routed."
url: "https://uscodex.org/cfr/40/65.144"
---

# §65.144. Fuel gas systems and processes to which storage vessel, transfer rack, or equipment leak regulated material emissions are routed.

- (a) **Equipment and operating requirements for fuel gas systems and processes.**
  - (1) Except during periods of startup, shutdown, and malfunction as specified in [§ 65.3(a)](/cfr/40/65.3.md?p=a), the fuel gas system or process shall be operating at all times when regulated material emissions are routed to it.
  - (2) The owner or operator of a transfer rack subject to the provisions of this subpart shall ensure that no pressure relief device in the transfer rack's system returning vapors to a fuel gas system or process shall open to the atmosphere during loading. Pressure relief devices needed for safety purposes are not subject to this [paragraph (a)(2)](#a-2).
  - (3) Each process piping system collecting regulated material from a transfer rack shall be designed and operated so that regulated material vapors collected at one loading arm will not pass through another loading arm in the rack to the atmosphere.
- (b) **Fuel gas system and process compliance determination.**
  - (1) If emissions are routed to a fuel gas system, there is no requirement to conduct a performance test or design evaluation.
  - (2) For storage vessels and transfer racks, and if emissions are routed to a process, the regulated material in the emissions shall predominantly meet one of, or a combination of, the following conditions, and the compliance demonstration requirements in [paragraph (b)(3)](#b-3) of this section, if applicable:
    - (i) Recycled and/or consumed in the same manner as a material that fulfills the same function in that process;
    - (ii) Transformed by chemical reaction into materials that are not regulated materials;
    - (iii) Incorporated into a product; and/or
    - (iv) **Recovered.**
  - (3) To demonstrate compliance with [paragraph (b)(2)](#b-2) of this section for a storage vessel, the owner or operator shall prepare a design evaluation (or engineering assessment) that demonstrates the extent to which one or more of the conditions specified in [paragraphs (b)(2)(i) through (iv)](#b-2-i..b-2-iv) of this section are being met. The owner or operator shall submit the design evaluation as specified in [§ 65.165(a)(1)](/cfr/40/65.165.md?p=a-1).
- (c) **Statement of connection to fuel gas system.** For storage vessels and transfer racks, the owner or operator shall submit the statement of connection reports for fuel gas systems specified in [§ 65.165(a)(2)](/cfr/40/65.165.md?p=a-2) and/or (a)(3), as appropriate.

## Notes

### Authority

Authority: 42 U.S.C. 7401 et seq.

### Source

Source: 65 FR 78285, Dec. 14, 2000, unless otherwise noted.