Malfunction

Malfunction means any sudden, infrequent, and not reasonably preventable failure of air pollution control and monitoring equipment, process equipment, or a process to operate in a normal or usual manner. Failures that are caused, in part, by poor maintenance or careless operation are not malfunctions.

Source

40 CFR § 60.5250

Scoping language

Terms used but not defined in this subpart are defined in the Clean Air Act and 60.2.