---
kind: "section"
citation: "40 C.F.R. § 63.1045"
title: "40"
number: "63.1045"
heading: "Standards—Pressurized separator."
url: "https://uscodex.org/cfr/40/63.1045"
---

# §63.1045. Standards—Pressurized separator.

- (a) This section applies to owners and operators controlling air emissions from an oil-water or organic-water separator that is pressurized and is operated as a closed-system.
- (b) The pressurized separator must meet the following requirements.
  - (1) The separator must be designed not to vent to the atmosphere as a result of compression of the vapor headspace in the separator during operation of the separator at its design capacity.
  - (2) All separator openings must be equipped with closure devices designed to operate with no detectable organic emissions as determined using the procedure specified in [§ 63.1046(a)](/cfr/40/63.1046.md?p=a) of this subpart.
  - (3) Whenever a regulated-material is in the separator, the separator must be operated as a closed system that does not vent to the atmosphere except under either of the following conditions as specified in paragraph [(b)(3)(i)](#b-3-i) or [(b)(3)(ii)](#b-3-ii) of this section.
    - (i) At those times when opening of a safety device, as defined in [§ 63.1041](/cfr/40/63.1041.md) of this subpart, is required to avoid an unsafe condition.
    - (ii) At those times when purging of inerts from the separator is required, and the purge stream is routed to a closed-vent system and control device designed and operated in accordance with the applicable requirements of [§ 63.693](/cfr/40/63.693.md).

## Notes

### Amendments

[64 FR 38991, July 20, 1999, as amended at 66 FR 1268, Jan. 8, 2001]

### Source

Source: 61 FR 34195, July 1, 1996, unless otherwise noted.

### Authority

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

### Source

Source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.

### Amendments

[64 FR 38991, July 20, 1999, as amended at 66 FR 1268, Jan. 8, 2001]