AP 42, Fifth Edition, Volume I Chapter 12: Metallurgical Industry
Chapter 12: Frequent Questions
12.0 Introduction to Metallurgical Industry (1 pg, 10 K)
12.1 Primary Aluminum Production
- AP-42 12.1 Final Section - October 1998 (PDF) (11 pp, 106 K)
- 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.
- AP-42 12.1 Background Document (PDF) (42 pp, 162 K)
12.2 Coke Production
- AP-42 12.2 Final Section - May 2008 (PDF) (53 pp, 193 K)
- AP-42 12.2 Background Document - May 2008 (PDF) (360 pp, 2 MB)
12.3 Primary Copper Smelting
- AP-42 12.3 Final Section - October 1986 (PDF) (20 pp, 155 K)
- AP-42 12.3 Background Document (PDF) (44 pp, 178 K)
12.4 Ferroalloy Production
- AP-42 12.4 Final Section - October 1986 (PDF) (20 pp, 108 K)
- AP-42 12.4 Background Document (PDF) (45 pp, 122 K)
12.5 Iron and Steel Production
- AP-42 12.5 Final Section - October 1986 (PDF) (25 pp, 363 K)
12.5.1 Minimills
- AP-42 12.5.1 Final Section - April 2009 (PDF) (19 pp, 220 K)
- AP-42 12.5.1 Background Document - April 2009 (PDF) (50 pp, 240 K)
12.6 Primary Lead Smelting
- AP-42 12.6 Final Section - January 1995 (PDF) (8 pp, 109 K)
- AP-42 12.6 Background Document (PDF) (65 pp, 155 K)
12.7 Zinc Smelting
- AP-42 12.7 Final Section - October 1986 (PDF) (8 pp, 84 K)
- AP-42 12.7 Background Document (PDF) (27 pp, 105 K)
12.8 Secondary Aluminum Operations
- AP-42 12.8 Final Section - October 1986 (PDF) (12 pp, 158 K)
- AP-42 12.8 Background Document (PDF) (44 pp, 152 K)
12.9 Secondary Copper Smelting and Alloying
- AP-42 12.9 Final Section - January 1995 (PDF) (9 pp, 192 K)
- AP-42 12.9 Background Document (PDF) (37 pp, 182 K)
12.10 Gray Iron Foundries
- AP-42 12.10 Final Section - Update 2003, May 2003 (PDF) (20 pp, 408 K)
- AP-42 12.10 Background Document May 2003 (PDF) (64 pp, 215 K)
12.11 Secondary Lead Processing
- AP-42 12.11 Final Section - October 1986 (PDF) (13 pp, 198 K)
- Errata - September 21, 2010. Tables 12.11-3 and -4 were updated to include 1997 PDF comment regarding lead emission factor for sweating.
- AP-42 12.11 Background Document (PDF) (52 pp, 203 K)
12.12 Secondary Magnesium Smelting
- AP-42 12.12 Final Section - November 1994 (PDF) (2 pp, 15 K)
- AP-42 12.12 Background Document (PDF) (29 pp, 61 K)
12.13 Steel Foundries
- AP-42 12.13 Final Section - January 1995 (PDF) (8 pp, 104 K)
- AP-42 12.13 Background Document (PDF) (37 pp, 128 K)
12.14 Secondary Zinc Processing
- AP-42 12.14 Final Section - April 1981 (PDF) (9 pp, 177 K)
- AP-42 12.14 Background Document (PDF) (30 pp, 162 K)
12.15 Storage Battery Production
- AP-42 12.15 Final Section - January 1995 (PDF) (6 pp, 156 K)
- AP-42 12.15 Background Document (PDF) (70 pp, 267 K)
12.16 Lead Oxide and Pigment Production
- AP-42 12.16 Final Section - January 1995 (PDF) (6 pp, 43 K)
- AP-42 12.16 Background Document (PDF) (33 pp, 79 K)
12.17 Miscellaneous Lead Products
- AP-42 12.17 Final Section - January 1995 (PDF) (4 pp, 21 K)
- AP-42 12.17 Background Document (PDF) (23 pp, 48 K)
12.18 Leadbearing Ore Crushing and Grinding
- AP-42 12.18 Final Section - Updated March 2007 (PDF) (4 pp, 52 K)
- AP-42 12.18 Background Document (PDF) (20 pp, 46 K)
12.19 Electric Arc Welding
- AP-42 12.19 Final Section - January 1995 (PDF) (9 pp, 112 K)
- Errata - June 23, 2009 - Table 12.19-2 was corrected to add 'lb' to the HAP emission factor column heading.
- AP-42 12.19 Background Document (PDF) (247 pp, 7 MB)
12.20 Electroplating
- AP-42 12.20 Final Section - Supplement B, October 2021 (PDF) (21 pp, 225 K)
- AP-42 12.20 Summary of Changes - October 2021 (PDF) (3 pp, 272 K)
- Errata - April 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.
- AP-42 12.20 Background Document (PDF) (250 pp, 3 MB)
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) (6 pp, 400 K)