NSPS for Steel Plants: Electric Arc Furnaces and Argon-Oxygen Decarburization Vessels (40 CFR part 60, subparts AA and AAa) (Renewal)

The New Source Performance Standards (NSPS) for Steel Plants: Electric Arc Furnaces and Argon Oxygen Decarburization Vessels (40 CFR Part 60, Subpart AA) were proposed on October 21, 1974, promulgated on September 23, 1975, and most recently-amended on February 22, 2005. These regulations apply to electric arc furnaces and dust-handling systems that commenced construction, modification, or reconstruction either after October 21, 1974 or on/or before August 17, 1983 at steel plants that produce carbon, alloy, or specialty steels. In addition, the New Source Performance Standards (NSPS) for these regulations (40 CFR Part 60, Subpart AAa) were proposed on August 17, 1983, promulgated on October 31, 1984, and most recently- amended on February 22, 2005. These latter regulations apply to electric arc furnaces, argon-oxygen decarburization vessels, and dust-handling systems that commenced construction, modification, or reconstruction after August 17, 1983 at steel plants that produce carbon, alloy, or specialty steels. New facilities include those that commenced construction, modification or reconstruction after the date of proposal. This information is being collected to assure compliance with 40 CFR Part 60, Subparts AA and AAa. In general, all NSPS standards require initial notifications, performance tests, and periodic reports by the owners/operators of the affected facilities. They are also required to maintain records of the occurrence and duration of any startup, shutdown, or malfunction in the operation of an affected facility, or any period during which the monitoring system is inoperative. These notifications, reports, and records are essential in determining compliance, and are required of all affected facilities subject to NSPS.

The latest form for NSPS for Steel Plants: Electric Arc Furnaces and Argon-Oxygen Decarburization Vessels (40 CFR part 60, subparts AA and AAa) (Renewal) expires 2022-11-30 and can be found here.