For the purpose of this subchapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
DUST. Gas-borne particles larger than ten microns in mean diameter.
DUST SEPARATING EQUIPMENT. Any device for separating dust from the gas medium in which it is carried.
FUEL BURNING EQUIPMENT. Any furnace, incinerator, refuse-burning equipment, boiler, apparatus, device, mechanism, stock or structure used in the process of burning fuel or combustible material.
FUMES. Gases or vapors that are of a character as to create an unclean, destructive, offensive or unhealthful condition.
INTERNAL COMBUSTION ENGINE. An engine in which combustion of a gaseous liquid or pulverized solid fuel takes place within one or more cylinders.
OPEN FIRE. Any fire wherein the products of combustion are emitted into the open air and are not directed thereto through a stack or chimney.
RINGELMANN SMOKE CHART. The Ringelmann chart with instructions for use as published by the U.S. Bureau of Mines, 1945.
SMOKE. Small gas-borne particles consisting essentially of carbonaceous material in sufficient number to be observable.
SOOT. Agglomerated particles consisting essentially of carbonaceous material.
STACK or CHIMNEY. Flue, conduit or opening arranged for emitting gases into the open air.
VOLATILE. The gaseous constituents of solid fuels as determined by the standard A.S.T.M. procedure amended or revised to date.
(Prior Code, § 9-40)