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Delaware General AssemblyDelaware RegulationsMonthly Register of RegulationsOctober 2017


Regulatory Flexibility Act Form

Authenticated PDF Version

7 DE Admin. Code 1123
1123 Standards of Performance for Steel Plants: Electric Arc Furnaces
7 DE Admin Code 1123, Standards of Performance for Steel Plants: Electric Arc Furnaces
The purpose of this action is to repeal 7 DE Admin Code 1123, pursuant to an HB-147 review. This regulation currently applies to no source in Delaware and other more restrictive State and Federal requirements would apply should a new electric arc furnace be constructed in the future.
7 Del.C. Ch. 60 Environmental Control
Renae Held Renae.Held@state.de.us (302) 739-9402
1123 Standards of Performance for Steel Plants: Electric Arc Furnaces
Capture system” means the equipment (including ducts, hoods, fans, dampers, etc.) used to capture or transport particulate matter generated by an EAF to the air pollution control device.
Charge” means the addition of iron and steel scrap or other materials into the top of an electric arc furnace.
Charging period” means the time period commencing at the moment an EAF starts to open and ending either three minutes after the EAF roof is returned to its closed position or six minutes after commencement of opening of the roof, whichever is longer.
Control device” means the air pollution control equipment used to remove particulate matter generated by an EAF from the effluent gas stream.
Direct shell evacuation system” means any system that maintains a negative pressure within the EAF above the slag or metal and ducts these emissions to the control device.
Dust-handling equipment” means any equipment used to handle particulate matter collected by the control device and located at or near the control device for an EAF subject to this regulation.
Electric arc furnace (EAF)” means any furnace that produces molten steel and heats the charge materials with electric arcs from carbon electrodes. Furnaces from which the molten steel is cast into the shape of finished products, such as in foundry, are not applicable facilities included within the scope of this definition. Furnaces which, as the primary source of iron, continuously feed prereduced ore pellets are not applicable facilities within the scope of this definition.
Heat time” means the period commencing when scrap is charged to an empty EAF and terminating when the EAF tap is completed.
Meltdown and refining” means that phase of the steel production cycle when charge material is melted and undesirable elements are removed from the metal.
Meltdown and refining period” means the time period commencing at the termination of the initial charging period and ending at the initiation of the tapping period, excluding any intermediate charging periods.
Shop opacity” means the arithmetic average of 24 or more opacity observations of emissions from the shop taken from the applicable time periods in accordance with Method 9 set forth in Appendix A, 40 CFR Part 60, revised July 1, 1975. All sections of Method 9 not previously adopted are hereby adopted by reference.
Shop” means the building which houses one or more EAFs.
Tap” means the pouring of molten steel from an EAF.
Tapping period” means the time period commencing at the moment an EAF begins to tilt to pour and ending either three minutes after an EAF returns to an upright position or six minutes after commencing to tilt, whichever is longer.
Last Updated: December 31 1969 19:00:00.
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