[Code of Federal Regulations]
[Title 40, Volume 24]
[Revised as of July 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR266.110]

[Page 44]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
                           AGENCY (CONTINUED)
 
PART 266--STANDARDS FOR THE MANAGEMENT OF SPECIFIC HAZARDOUS WASTES AND 
SPECIFIC TYPES OF HAZARDOUS WASTE MANAGEMENT FACILITIES--Table of Contents
 
  Subpart H--Hazardous Waste Burned in Boilers and Industrial Furnaces
 
Sec. 266.110  Waiver of DRE trial burn for boilers.

    Boilers that operate under the special requirements of this section, 
and that do not burn hazardous waste containing (or derived from) EPA 
Hazardous Waste Nos. F020, F021, F022, F023, F026, or F027, are 
considered to be in conformance with the DRE standard of 
Sec. 266.104(a), and a trial burn to demonstrate DRE is waived. When 
burning hazardous waste:
    (a) A minimum of 50 percent of fuel fired to the device shall be 
fossil fuel, fuels derived from fossil fuel, tall oil, or, if approved 
by the Director on a case-by-case basis, other nonhazardous fuel with 
combustion characteristics comparable to fossil fuel. Such fuels are 
termed ``primary fuel'' for purposes of this section. (Tall oil is a 
fuel derived from vegetable and rosin fatty acids.) The 50 percent 
primary fuel firing rate shall be determined on a total heat or mass 
input basis, whichever results in the greater mass feed rate of primary 
fuel fired;
    (b) Boiler load shall not be less than 40 percent. Boiler load is 
the ratio at any time of the total heat input to the maximum design heat 
input;
    (c) Primary fuels and hazardous waste fuels shall have a minimum as-
fired heating value of 8,000 Btu/lb, and each material fired in a burner 
where hazardous waste is fired must have a heating value of at least 
8,000 Btu/lb, as-fired;
    (d) The device shall operate in conformance with the carbon monoxide 
standard provided by Sec. 266.104(b)(1). Boilers subject to the waiver 
of the DRE trial burn provided by this section are not eligible for the 
alternative carbon monoxide standard provided by Sec. 266.104(c);
    (e) The boiler must be a watertube type boiler that does not feed 
fuel using a stoker or stoker type mechanism; and
    (f) The hazardous waste shall be fired directly into the primary 
fuel flame zone of the combustion chamber with an air or steam 
atomization firing system, mechanical atomization system, or a rotary 
cup atomization system under the following conditions:
    (1) Viscosity. The viscosity of the hazardous waste fuel as-fired 
shall not exceed 300 SSU;
    (2) Particle size. When a high pressure air or steam atomizer, low 
pressure atomizer, or mechanical atomizer is used, 70% of the hazardous 
waste fuel must pass through a 200 mesh (74 micron) screen, and when a 
rotary cup atomizer is used, 70% of the hazardous waste must pass 
through a 100 mesh (150 micron) screen;
    (3) Mechanical atomization systems. Fuel pressure within a 
mechanical atomization system and fuel flow rate shall be maintained 
within the design range taking into account the viscosity and volatility 
of the fuel;
    (4) Rotary cup atomization systems. Fuel flow rate through a rotary 
cup atomization system must be maintained within the design range taking 
into account the viscosity and volatility of the fuel.

[56 FR 7208, Feb. 21, 1991; 56 FR 32690, July 17, 1991, as amended at 56 
FR 42515, Aug. 27, 1991]

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