Outdated Exemption List, Subchapter P - July 16, 1997
30 TAC 106 - Subchapter P Plant Operations
106.371 Cooling Water Units (Previously
106.372 Industrial Gases (Previously SE101)
106.373 Refrigeration Systems (Previously SE103)
106.374 Lime Slaking Facilities (Previously SE121)
106.375 Aqueous Solutions for Electrolytic and Electroless Processes (Previously SE41)
Water cooling towers, water treating systems for process cooling water or boiler feedwater, and water tanks, reservoirs, or other water containers designed to cool, store, or otherwise handle water (including rainwater) that have not been used in direct contact with gaseous or liquid process streams containing carbon compounds, sulfur compounds, halogens or halogen compounds, cyanide compounds, inorganic acids, or acid gases are exempt.
Any air separation, or other industrial gas production, storage, or packaging facility is exempt. Industrial gases, for purposes of this section, include only oxygen, nitrogen, helium, neon, argon, krypton, and xenon.
Refrigeration systems, including storage tanks used in refrigeration systems, are exempt.
Any lime slaking facility used to mix quicklime with water is exempt, provided the following conditions of this section are met:
(1) the mixing vessel shall be horizontal;
(2) the mixing vessel shall use interior mechanical agitation parallel to the bottom and agitate the water over the full length of the vessel;
(3) quicklime shall be injected into the mixing vessel as follows:
(A) where injection is from a pneumatic transfer system, the quicklime shall be injected at a point at least 12 inches under the surface of the agitated water; or
(B) where injection is from a non-pneumatic conveying system unloading at the top of the vessel, emissions from any vent on the vessel shall be controlled by an appropriately sized wet scrubber;
(4) there shall be no visible emissions (other than uncombined water).
Equipment using aqueous solutions for anodizing,
electrodeposition, electroless plating, electrolytic polishing, and
stripping of brass, bronze, cadmium, copper, iron, lead, nickel,
tin, zinc, and precious metals; and for cleaning, stripping,
etching, or other surface preparation is exempt. This section does
not include chemical milling or electrolytic metal recovery and
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