---
kind: "section"
citation: "40 C.F.R. § 65.151"
title: "40"
number: "65.151"
heading: "Condensers used as control devices."
url: "https://uscodex.org/cfr/40/65.151"
---

# §65.151. Condensers used as control devices.

- (a) **Condenser equipment and operating requirements.**
  - (1) Owners or operators using condensers to meet the 98 weight-percent emission reduction or 20 parts per million by volume outlet concentration requirements as specified in [§ 65.63(a)(2)](/cfr/40/65.63.md?p=a-2), or [40 CFR 60.562-1(a)(1)(i)(A)](/cfr/40/60.562-1.md?p=a-1-i-A) for process vents, or [§ 65.83(a)(1)](/cfr/40/65.83.md?p=a-1) for high-throughput transfer racks, as applicable, shall meet the requirements of this section.
  - (2) Condensers used to comply with the provisions of this subpart shall be operated at all times when emissions are vented to them.
- (b) **Condenser performance test requirements.**
  - (1) Unless an initial performance test was previously conducted and submitted under the referencing subpart and except as specified in [§ 65.157(b)](/cfr/40/65.157.md?p=b), the owner or operator shall conduct an initial performance test of any condenser used as a control device to comply with the provisions of this subpart according to the procedures in §§ [65.157](/cfr/40/65.157.md) and [65.158](/cfr/40/65.158.md). Performance test records shall be kept as specified in § [65.160(a)](/cfr/40/65.160.md?p=a) and [(b)](/cfr/40/65.160.md?p=b), and a performance test report shall be submitted as specified in [§ 65.164](/cfr/40/65.164.md). As provided in [§ 65.145(b)(1)](/cfr/40/65.145.md?p=b-1), a performance test may be used as an alternative to the design evaluation for storage vessels and low-throughput transfer rack controls. As provided in [§ 65.146(b)](/cfr/40/65.146.md?p=b), no performance test is required to demonstrate compliance for equipment leaks.
  - (2) Unless already permitted by the applicable title V permit, if an owner or operator elects to use a condenser to replace an existing recovery or control device at a later date, the owner or operator shall notify the Administrator, either by amendment of the regulated source's title V permit or, if title V is not applicable, by submission of the notice specified in [§ 65.167(a)](/cfr/40/65.167.md?p=a) before implementing the change. Upon implementing the change, either of the following provisions, as applicable, shall be followed:
    - (i) **Replace final recovery device.** If an owner or operator elects to replace the final recovery device on a process vent with a condenser used as a control device, the owner or operator shall comply with the applicable provisions of §§ [65.63(e)](/cfr/40/65.63.md?p=e) and [65.67(b)](/cfr/40/65.67.md?p=b).
    - (ii) **Replace control device.** If an owner or operator elects to replace a control device on a Group 1 process vent or a high-throughput transfer rack with a condenser used as a control device, the owner or operator shall perform a performance test using the methods specified in §§ [65.157](/cfr/40/65.157.md) and [65.158](/cfr/40/65.158.md) within 180 days. The performance test report shall be submitted to the Administrator within 60 days of completing the test as provided in [§ 65.164(b)(2)](/cfr/40/65.164.md?p=b-2).
- (c) **Condenser monitoring requirements.**
  - (1) Where a condenser is used as a control device, an organic monitoring device capable of providing a continuous record or a condenser exit (product side) temperature monitoring device capable of providing a continuous record shall be used. Monitoring results shall be recorded as specified in [§ 65.161](/cfr/40/65.161.md). General requirements for monitoring and continuous parameter monitoring systems are contained in [§ 65.156](/cfr/40/65.156.md).
  - (2) The owner or operator shall establish a range for monitored parameters that indicates proper operation of the condenser. In order to establish the range, the information required in [§ 65.165(c)](/cfr/40/65.165.md?p=c) shall be submitted in the Initial Compliance Status Report or the operating permit application or amendment. The range may be based upon a prior performance test meeting the specifications in [§ 65.157(b)(1)](/cfr/40/65.157.md?p=b-1) or upon existing ranges or limits established under a referencing subpart.

## Notes

### Authority

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

### Source

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