---
kind: "section"
citation: "40 C.F.R. § 63.1406"
title: "40"
number: "63.1406"
heading: "Reactor batch process vent provisions."
url: "https://uscodex.org/cfr/40/63.1406"
---

# §63.1406. Reactor batch process vent provisions.

- (a) **Emission standards.** Owners or operators of reactor batch process vents located at new or existing affected sources shall comply with paragraph [(a)(1)](#a-1) or [(2)](#a-2) of this section, as appropriate. As an alternative to complying with [paragraph (a)](#a) of this section, an owner or operator may comply with [paragraph (b)](#b) of this section.
  - (1) The owner or operator of a reactor batch process vent located at a new affected source shall control organic HAP emissions by complying with either paragraph [(a)(1)(i)](#a-1-i), [(ii)](#a-1-ii), or [(iii)](#a-1-iii) of this section.
    - (i) **Vent all emissions of organic HAP to a flare.**
    - (ii) Reduce organic HAP emissions for the batch cycle by 95 weight percent using a control device or control technology.
    - (iii) Reduce organic HAP emissions from the collection of all reactor batch process vents within the affected source, as a whole, to 0.0045 kilogram of organic HAP per megagram of product or less for solvent-based resin production, or to 0.0004 kilogram of organic HAP per megagram of product or less for non-solvent-based resin production.
  - (2) The owner or operator of a reactor batch process vent located at an existing affected source shall control organic HAP emissions by complying with either paragraph [(a)(2)(i)](#a-2-i), [(ii)](#a-2-ii), or [(iii)](#a-2-iii) of this section.
    - (i) **Vent all emissions of organic HAP to a flare.**
    - (ii) Reduce organic HAP emissions for the batch cycle by 83 weight percent using a control device or control technology.
    - (iii) Reduce organic HAP emissions from the collection of all reactor batch process vents within the affected source, as a whole, to 0.0567 kilogram of organic HAP per megagram of product or less for solvent-based resin production, or to 0.0057 kilogram of organic HAP per megagram of product or less for non-solvent-based resin production.
- (b) **Alternative standard.** Vent all organic HAP emissions from a reactor batch process vent to a combustion control device achieving an outlet organic HAP concentration of 20 ppmv or less or to a non-combustion control device achieving an outlet organic HAP concentration of 50 ppmv or less. Any reactor batch process vents that are not vented to a control device meeting these conditions shall be controlled in accordance with the provisions of [paragraph (a)(1)(ii)](#a-1-ii), or [paragraph (a)(2)(ii)](#a-2-ii) of this section.
- (c) **Use of boiler or process heater.** If a boiler or process heater is used to comply with the requirements of paragraph [(a)(1)(i)](#a-1-i) or [(ii)](#a-1-ii), or paragraph [(a)(2)(i)](#a-2-i) or [(ii)](#a-2-ii) of this section, the reactor batch process vent shall be introduced into the flame zone of such a device.

## Notes

### Source

Source: 65 FR 3290, Jan. 20, 2000, unless otherwise noted.

### Authority

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

### Source

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