40 CFR 61.51 - Definitions.
(b)Mercury ore means a mineral mined specifically for its mercury content.
(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.
(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.
(k)Cell room means a structure(s) housing one or more mercury electrolytic chlor-alkali cells.
(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.
Title 40 published on 2015-08-22
The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 40 CFR Part 61 after this date.