"Incinerator" means any device, apparatus or equipment used for destroying, reducing or salvaging by fire or heat any material or substance. Incinerators include smelters, bake-off ovens and other similar units, but do not include recovery boilers, smelt tanks, lime kilns, boilers or stationary internal combustion units and shall be classified as follows:
A. Class IA - direct fed incinerators with a burning rate of up to 75 pounds per hour of type 1, 2 or 3 waste, or any combination of the three waste types;B. Class IB - direct fed incinerators with a burning rate of 75 pounds per hour or over, suitable for type 1, 2 or 3 waste, or any combination of the three waste types;C. Class IIA - Flue-fed, single chamber incinerators with more than two (2) square feet burning area, for type 1 or 2 waste, or a combination of the two waste types. This type of incinerator is served by one vertical flue functioning both as a chute for charging waste and to carry the products of combustion to atmosphere. This type of incinerator has been installed in apartment houses or multiple dwellings;D. Class IIB - Chute-fed multiple chamber incinerators, for apartment buildings with more than two (2) square feet burning area, suitable for type 1 or 2 waste, or a combination of the two waste types. (Not recommended for industrial installation). This type of incinerator is served by a vertical chute for charging wastes and has a separate flue for carrying the products of combustion to the atmosphere;E. Class III - Municipal incinerators suitable for type 0, type 1, type 2 or type 3 wastes, or any combination of the four wastes, and are rated in tons per 24-hours;F. Class IVA - Crematory and pathological incinerators, suitable for type 4 waste, andG. Class IVB - Pathological - infections waste incinerators, suitable for type 7 waste; andH. Class V. - Incinerators designed for specific by-products wastes, type 5 or type 6, or a combination of the two waste types.06- 096 C.M.R. ch. 100, § 68