40 CFR 61.51 - Definitions.

§ 61.51 Definitions.

Terms used in this subpart are defined in the act, in subpart A of this part, or in this section as follows:

(a)Mercury means the element mercury, excluding any associated elements, and includes mercury in particulates, vapors, aerosols, and compounds.

(b)Mercury ore means a mineral mined specifically for its mercury content.

(c)Mercury ore processing facility means a facility processing mercury ore to obtain mercury.

(d)Condenser stack gases mean the gaseous effluent evolved from the stack of processes utilizing heat to extract mercury metal from mercury ore.

(e)Mercury chlor-alkali cell means a device which is basically composed of an electrolyzer section and a denuder (decomposer) section and utilizes mercury to produce chlorine gas, hydrogen gas, and alkali metal hydroxide.

(f)Mercury chlor-alkali electrolyzer means an electrolytic device which is part of a mercury chlor-alkali cell and utilizes a flowing mercury cathode to produce chlorine gas and alkali metal amalgam.

(g)Denuder means a horizontal or vertical container which is part of a mercury chlor-alkali cell and in which water and alkali metal amalgam are converted to alkali metal hydroxide, mercury, and hydrogen gas in a short-circuited, electrolytic reaction.

(h)Hydrogen gas stream means a hydrogen stream formed in the chlor-alkali cell denuder.

(i)End box means a container(s) located on one or both ends of a mercury chlor-alkali electrolyzer which serves as a connection between the electrolyzer and denuder for rich and stripped amalgam.

(j)End box ventilation system means a ventilation system which collects mercury emissions from the end-boxes, the mercury pump sumps, and their water collection systems.

(k)Cell room means a structure(s) housing one or more mercury electrolytic chlor-alkali cells.

(l)Sludge means sludge produced by a treatment plant that processes municipal or industrial waste waters.

(m)Sludge dryer means a device used to reduce the moisture content of sludge by heating to temperatures above 65 °C (ca. 150 °F) directly with combustion gases.

[ 38 FR 8826, Apr. 6, 1973, as amended at 40 FR 48302, Oct. 14, 1975]

This is a list of United States Code sections, Statutes at Large, Public Laws, and Presidential Documents, which provide rulemaking authority for this CFR Part.

This list is taken from the Parallel Table of Authorities and Rules provided by GPO [Government Printing Office].

It is not guaranteed to be accurate or up-to-date, though we do refresh the database weekly. More limitations on accuracy are described at the GPO site.

United States Code

Title 40 published on 19-May-2018 05:22

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 40 CFR Part 61 after this date.

  • 2018-04-13; vol. 83 # 72 - Friday, April 13, 2018
    1. 83 FR 15964 - New Source Performance Standards and National Emission Standards for Hazardous Air Pollutants; Delegation of Authority to New Mexico
      GPO FDSys XML | Text
      Direct final rule; delegation of authority.
      This rule is effective on June 12, 2018 without further notice, unless the EPA receives relevant adverse comment by May 14, 2018. If the EPA receives such comment, the EPA will publish a timely withdrawal in the Federal Register informing the public that the updated NESHAP delegation will not take effect; however, the NSPS delegation will not be affected by such action.
      40 CFR Parts 60, 61, and 63