AP 42, Fifth Edition, Volume I
Chapter 12: Metallurgical Industry

Chapter 12: Frequent Questions

12.0

Introduction to Metallurgical Industry

12.1

Primary Aluminum Production

Final Section - October 1998 (PDF 100K)
Errata
In Table 12.1-2 the number under Prebake Aluminum Cells, Cumulative Emission Factor, Total was corrected to be 5.0 and not 2.5. Also the emissions factors and size distributions in the second and third columns for Prebake Aluminum Cells and HSS Aluminum Cells are fugitive emissions measured at the roof monitor. The emission factor and size distributions in the fourth column for HSS Reduction Cells is for primary emissions. In Table 12.1-3, the Source Classification Codes were added to the table.
Background Document (PDF 155K)

12.2

Coke Production

Final Section - May 2008 (PDF 190K)
Background Document - May 2008 (PDF 1.8M)

12.3

Primary Copper Smelting

Final Section - October 1986 (PDF 155K)
Background Document (PDF 176K)

12.4

Ferroalloy Production

Final Section - October 1986 (PDF 111K)
Background Document (PDF 121K)

12.5

Iron and Steel Production

Final Section - October 1986 (PDF 502K)

12.5.1	Minimills
	Final Section - April 2009 (PDF 116K) Background Document - April 2009 (PDF 235K)

12.6

Primary Lead Smelting

Final Section - January 1995 (PDF 113K)
Background Document (PDF 106K)

12.7

Zinc Smelting

Final Section - October 1986 (PDF 82K)
Background Document (PDF 102K)

12.8

Secondary Aluminum Operations

Final Section - October 1986 (PDF 158K)
Background Document (PDF 150K)

12.9

Secondary Copper Smelting and Alloying

Final Section - January 1995 (PDF 190K)
Background Document (PDF 179K)

12.10

Gray Iron Foundries

Final Section - Update 2003, May 2003 (PDF 222K)
Background Document (PDF 212K)

12.11

Secondary Lead Processing

Final Section - October 1986 (PDF 137K)
Background Document (PDF 200K)

12.12

Secondary Magnesium Smelting

Final Section - November 1994 (PDF 14K)
Background Document (PDF 60K)

12.13

Steel Foundries

Final Section - January 1995 (PDF 101K)
Background Document (PDF 126K)

12.14

Secondary Zinc Processing

Final Section - April 1981 (PDF 176K)
Background Document (PDF 159K)

12.15

Storage Battery Production

Final Section - January 1995 (PDF 151K)
Background Document (PDF 263K)

12.16

Lead Oxide and Pigment Production

Final Section - January 1995 (PDF 41K)
Background Document (PDF 77K)

12.17

Miscellaneous Lead Products

Final Section - January 1995 (PDF 18K)
Background Document (PDF 48K)

12.18

Leadbearing Ore Crushing and Grinding

Final Section - Updated March 2007 (PDF 18K)
Background Document (PDF 46K)

12.19

Electric Arc Welding

Final Section - January 1995 (PDF 107K)
Background Document (PDF 838K)

12.20

Electroplating

Final Section - Supplement B, July 1996 (PDF 221K)
Errata - April 19, 2006
Footnote "a" to Table 12.20-2 in the Electroplating AP-42 section was revised to reflect the correct conversion from grains/hr-ft^2 to mg/hr-m^2. The corrected conversion factor of 697 replaces the value of 0.7 that was in the footnote.
Background Document (PDF 612K)

Related Emission Factor Documents

Emission of Fume, Nitrogen Oxides and Noise in Plasma Cutting of Stainless and Mild Steel

Main Document - by Broman B. et al, The Swedish Institute of Production Engineering Research. SELECTED PAGES ONLY., March 1994 (PDF 695K)

AP 42 Emissions Factors by Chapter

AP 42, Fifth Edition, Volume I Chapter 12: Metallurgical Industry

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AP 42, Fifth Edition, Volume I
Chapter 12: Metallurgical Industry