Which location is not an allowed site for burning off-specification used oil for energy recovery?

• A. Boilers
• B. Industrial Furnaces
• C. Hazardous Waste Incinerators
• D. Coal-Fired Power Plants

Answer: (D)

The concept being tested is that burning off-spec used oil for energy recovery is allowed only in facilities that are specifically permitted and equipped to burn used oil as a fuel. Unit types such as boilers, industrial furnaces, and certain hazardous-waste-related incineration setups can be authorized to burn used oil for energy recovery under proper permits and emission controls. A coal-fired power plant, however, is not designated as an approved used-oil energy-recovery unit because it is designed to burn coal and operates under different fuel-handling and permit requirements. Therefore, it is not an allowed site for burning off-specification used oil for energy recovery.