Michigan Administrative Code › Department - Environmental Quality › Air Quality Division › Part 15 - EMISSION LIMITATIONS AND PROHIBITIONS-MERCURY › Section R. 336.2501 - Definitions

Current through Vol. 24-12, July 15, 2024
Rule 1501. The following definitions apply to terms used in
				  this part:
(a) "Affected EGU" means
				any stationary coal-fired electric generating unit serving at any time, since
				the start-up of a unit's combustion chamber, a generator with nameplate
				capacity of more than 25 megawatts producing electricity for sale.
(b) "Automated data acquisition and handling
				system" or "DAHS" means that component of the continuous emission monitoring
				system (CEMS), or other emissions monitoring system approved for use by the
				department, designed to interpret and convert individual output signals from
				pollutant concentration monitors, flow monitors, diluent gas monitors, and
				other component parts of the monitoring system to produce a continuous record
				of the measured parameters in the measurement units for mercury.
(c) "Boiler" means an enclosed fossil
				fuel-fired or other fuel-fired combustion device used to produce heat and to
				transfer heat to recirculating water, steam, or other medium.
(d) "Bottom-cycling cogeneration unit" means
				a cogeneration unit in which the energy input to the unit is first used to
				produce useful thermal energy and at least some of the reject heat from the
				useful thermal energy application or process is then used for electricity
				production.
(e) "Coal" means any
				solid fuel classified as anthracite, bituminous, subbituminous, or lignite by
				the ASTM standard specification for classification of coals by rank D388-77,
				90, 91, 95, 98a, or 99.
(f)
				"Coal-derived fuel" means any fuel (whether in a solid, liquid, or gaseous
				state) produced by the mechanical, thermal, or chemical processing of
				coal.
(g) "Coal-fired" means
				combusting any amount of coal or coal-derived fuel, alone or in combination
				with any amount of any other fuel, during any year.
(h) "Coal-fired electric utility steam
				generating unit" means an electric utility steam generating unit that burns
				coal, coal refuse, or a synthetic gas derived from coal either exclusively, in
				any combination together, or in any combination with other fuels in any
				amount.
(i) "Cogeneration unit"
				means a stationary, fossil fuel-fired boiler doing both of the following:
(i) Having equipment used to produce
				electricity and useful thermal energy for industrial, commercial, heating, or
				cooling purposes through the sequential use of energy.
(ii) Producing the following during the
				12-month period starting on the date the unit first produces electricity and
				during any calendar year after the calendar year in which the unit first
				produces electricity:
(A) For a topping-cycle
				cogeneration unit, both of the following apply:
(1) Useful thermal energy not less than 5% of
				total energy output.
(2) Useful
				power that, when added to 1/2 of useful thermal energy produced, is not less
				then 42.5% of total energy input from fossil fuel, if useful thermal energy
				produced is 15% or more of total energy output, or not less than 45% of total
				energy input from fossil fuel, if useful thermal energy produced is less than
				15% of total energy output.
(B) For a bottoming-cycle cogeneration unit,
				useful power not less than 45% of total energy input from fossil
				fuel.
(iii) Provided
				that the total energy input under paragraph (ii)(A)(2) and (B) of this rule
				shall equal the unit's total energy input from all fuel except biomass if the
				unit is a boiler.