Emission estimation calculators, booklet 1: chapter 7


Electric arc welding

The substances of concern for electric arc welding are Metals (Part 1 substances) and Criteria Air Contaminants (Part 4 substances).

Download spreadsheet calculator: Electric arc welding [xls 132kb] (4 Feb 2009)

Suggested estimation methodology: Emissions factor

The equation for emissions estimation is:

E = (A x EF)/1,000,000

where:

  • E = emissions [tonnes]
  • A = annual electrode usage [kilograms (kg)]
  • EF = emissions factor [grams (g)/kg of electrode consumed]

Then the total emissions for each substance are calculated by summing all individual emissions calculation for each substance.

Input

Record the annual electrode usage for each electrode type used based on the last 2 digits of Source Classification Code (SCC).  Then multiply it by the appropriate emissions factor for each substance found in the tables for Part 1 releases and Part 4 releases.

Welding process: Shielded metal arc welding (SMAW)(SCC 309051xx)
Electrode type Last 2 digits of SCC Notes
14Mn-4Cr (-04) N/A
E11018 (-08) Includes E11018-M
E308 (-12) Includes E308-16 and E308L-15
E310 (-16) Includes E310-16
E316 (-20) Includes E316-15, E316-16, and E316L-16
E410 (-24) Includes E410-16
E6010 (-28) N/A
E6011 (-32) N/A
E6012 (-36) N/A
E6013 (-40) N/A
E7018 (-44) N/A
E7024 (-48) N/A
E7028 (-52) N/A
E8018 (-56) Includes E8018C3
E9015 (-60) Includes E9015B3
E9018 (-64) Includes E9018B3 and E9018G
ECoCr (-68) Includes ECoCr-A
ENi-Cl (-72) N/A
ENiCrMo (-76) Includes ENiCrMo-4
ENi-Cu (-80) Includes ENi-Cu-2
Welding process: Gas metal arc welding (GMAW) (SCC 309052xx)
Electrode type Last 2 digits of SCC Notes
E308L (-12) Includes E308LSi
E70S (-54) Includes E70S-3, E70S-5, and E70S-6
ER1260 (-10) N/A
ER5154 (-26) N/A
ER316 (-20) Includes ER316I-Si and ER316L-Si
ERNiCrMo (-76) Includes ENiCrMo-3 and ENi-CrMo-4
ERNiCu (-80) Includes ERNiCu-7
Welding process: Flux cored arc welding (FCAW) (SCC 309053xx)
Electrode type Last 2 digits of SCC Notes
E110 (-06) Includes E110TS-K3
E11018 (-08) N/A
E308LT (-12) Includes E308LT-3
E316LT (-20) Includes E316LT-3
E70T (-54) Includes E70T-1, E70T-2, E70T-4, E70T-5, E70T-7, and E70T-G
E71T (-55) Includes E71T-1 and E71T-11
Welding process: Submerged arc welding (SAW) (SCC 309054xx)
Electrode type Last 2 digits of SCC Notes
EM12K (-10) Includes EM12K1 and F72-EM12K2

Part 1 releases

Chromium and its compounds: SMAW
Electrode type Emission factorFootnote1 Units
14Mn-4Cr 1.39 grams (g)/kg of electrode consumed
E308 0.393 g/kg of electrode consumed
E310 2.53 g/kg of electrode consumed
E316 0.522 g/kg of electrode consumed
E6010 0.003 g/kg of electrode consumed
E6011 0.005 g/kg of electrode consumed
E6013 0.004 g/kg of electrode consumed
E7018 0.006 g/kg of electrode consumed
E7024 0.001 g/kg of electrode consumed
E7028 0.013 g/kg of electrode consumed
E8018 0.017 g/kg of electrode consumed
E9018 0.212 g/kg of electrode consumed
ENiCrMo 0.42 g/kg of electrode consumed
Cobalt and its compounds: SMAW
Electrode type Emission factorFootnote1 Units
E308 0.001 grams (g)/kg of electrode consumed
E6011 0.001 g/kg of electrode consumed
E6013 0.0005Footnote* g/kg of electrode consumed
E7018 0.0005Footnote* g/kg of electrode consumed
Nickel and its compounds: SMAW
Electrode type Emission factorFootnote1 Units
14Mn-4Cr 1.71 grams (g)/kg of electrode consumed
E308 0.043 g/kg of electrode consumed
E310 0.196 g/kg of electrode consumed
E316 0.055 g/kg of electrode consumed
E410 0.014 g/kg of electrode consumed
E6010 0.004 g/kg of electrode consumed
E6011 0.005 g/kg of electrode consumed
E6013 0.002 g/kg of electrode consumed
E7018 0.002 g/kg of electrode consumed
E8018 0.051 g/kg of electrode consumed
E9018 0.013 g/kg of electrode consumed
ENi-Cl 0.89 g/kg of electrode consumed
ENiCrMo 0.247 g/kg of electrode consumed
ENi-Cu 0.423 g/kg of electrode consumed
Manganese and its compounds: SMAW
Electrode type Emission factorFootnote1 Units
14Mn-4Cr 23.2 grams (g)/kg of electrode consumed
E11018 1.38 g/kg of electrode consumed
E308 0.252 g/kg of electrode consumed
E310 2.2 g/kg of electrode consumed
E316 0.544 g/kg of electrode consumed
E410 0.685 g/kg of electrode consumed
E6010 0.991 g/kg of electrode consumed
E6011 0.998 g/kg of electrode consumed
E6013 0.945 g/kg of electrode consumed
E7018 1.03 g/kg of electrode consumed
E7024 0.629 g/kg of electrode consumed
E7028 0.8461 g/kg of electrode consumed
E8018 0.03 g/kg of electrode consumed
E9018 0.783 g/kg of electrode consumed
ENi-Cl 0.039 g/kg of electrode consumed
ENiCrMo 0.043 g/kg of electrode consumed
ENi-Cu 0.212 g/kg of electrode consumed
Hexavalent Chromium compounds: SMAW
Electrode type Emission factorFootnote1 Units
E308 0.359 grams (g)/kg of electrode consumed
E310 1.88 g/kg of electrode consumed
E316 0.332 g/kg of electrode consumed
E6010 0.001 g/kg of electrode consumed
Lead and its compounds (except tetraethyl lead): SMAW
Electrode type Emission factorFootnote1 Units
E310 0.024 grams (g)/kg of electrode consumed
E7028 0.162 g/kg of electrode consumed
GMAW for all applicable part 1 substances and applicable electrode types
Electrode type Applicable substances Emissions factor (EF)Footnote1 Units
E308L Chromium 0.524 grams (g)/kg of electrode consumed
E308L Cobalt 0.0005Footnote* g/kg of electrode consumed
E308L Manganese 0.346 g/kg of electrode consumed
E308L Nickel 0.184 g/kg of electrode consumed
E70S Chromium 0.001 g/kg of electrode consumed
E70S Cobalt 0.0005Footnote* g/kg of electrode consumed
E70S Manganese 0.318 g/kg of electrode consumed
E70S Nickel 0.001 g/kg of electrode consumed
ER1260 Chromium 0.004 g/kg of electrode consumed
ER316 Chromium 0.528 g/kg of electrode consumed
ER316 Hexavalent chromium 0.01 g/kg of electrode consumed
ER316 Manganese 0.245 g/kg of electrode consumed
ER316 Nickel 0.26 g/kg of electrode consumed
ER5154 Chromium 0.01 g/kg of electrode consumed
ER5154 Manganese 0.034 g/kg of electrode consumed
ERNiCrMo Chromium 0.353 g/kg of electrode consumed
ERNiCrMo Manganese 0.07 g/kg of electrode consumed
ERNiCrMo Nickel 1.25 g/kg of electrode consumed
ERNiCu Chromium 0.0005Footnote* g/kg of electrode consumed
ERNiCu Manganese 0.022 g/kg of electrode consumed
ERNiCu Nickel 0.451 g/kg of electrode consumed
FCAW for all applicable Part 1 Substances and applicable Electrode Types
Electrode type Applicable substances Emissions factor (EF)Footnote1 Units
E110 Chromium 0.002 grams (g)/kg of electrode consumed
E110 Manganese 2.02 g/kg of electrode consumed
E110 Nickel 0.112 g/kg of electrode consumed
E11018 Chromium 0.969 g/kg of electrode consumed
E11018 Manganese 0.704 g/kg of electrode consumed
E11018 Nickel 0.102 g/kg of electrode consumed
E316LT Chromium 0.97 g/kg of electrode consumed
E316LT Hexavalent chromium 0.14 g/kg of electrode consumed
E316LT Manganese 0.59 g/kg of electrode consumed
E316LT Nickel 0.093 g/kg of electrode consumed
E70T Chromium 0.004 g/kg of electrode consumed
E70T Manganese 0.891 g/kg of electrode consumed
E70T Nickel 0.005 g/kg of electrode consumed
E71T Chromium 0.002 g/kg of electrode consumed
E71T Cobalt 0.0005* g/kg of electrode consumed
E71T Manganese 0.662 g/kg of electrode consumed
E71T Nickel 0.004 g/kg of electrode consumed
Table of no data (ND) for different processes and electrode types
Process Electrode type Applicable substances
SMAW 14Mn-4Cr Hexavalent Chromium, Cobalt, Lead and their compounds
FCAW E110 Hexavalent Chromium, Cobalt, Lead and their compounds
FCAW E11018 Hexavalent Chromium, Cobalt, Lead and their compounds
SMAW E11018 Chromium, Hexavalent Chromium, Cobalt, Nickel, Lead and their compounds
SMAW E308 Lead and its compounds
GMAW E308L Hexavalent Chromium, Lead and their compounds
FCAW E308LT Chromium, Hexavalent Chromium, Cobalt, Manganese, Nickel, Lead and their compounds
SMAW E310 Cobalt and its compounds
SMAW E316 Cobalt, Lead and their compounds
FCAW E316LT Cobalt, Lead and their compounds
SMAW E410 Chromium, Hexavalent Chromium, Cobalt, Lead and their compounds
SMAW E6010 Cobalt, Lead and their compounds
SMAW E6011 Hexavalent Chromium, Lead and their compounds
SMAW E6012 Chromium, Hexavalent Chromium, Cobalt, Manganese, Nickel, Lead and their compounds
SMAW E6013 Hexavalent Chromium, Lead and their compounds
SMAW E7018 Hexavalent Chromium, Lead and their compounds
SMAW E7024 Hexavalent Chromium, Cobalt, Nickel, Lead and their compounds
SMAW E7028 Hexavalent Chromium, Cobalt, Nickel and their compounds
GMAW E70S Hexavalent Chromium, Lead and their compounds
FCAW E70T Hexavalent Chromium, Cobalt, Lead and their compounds
FCAW E71T Hexavalent Chromium, Lead and their compounds
SMAW E8018 Hexavalent Chromium, Cobalt, Lead and their compounds
SMAW E9015 Chromium, Hexavalent Chromium, Cobalt, Manganese, Nickel, Lead and their compounds
SMAW E9018 Hexavalent Chromium, Cobalt, Lead and their compounds
SMAW ECoCr Chromium, Hexavalent Chromium, Cobalt, Manganese, Nickel, Lead and their compounds
SAW EM12K Chromium, Hexavalent Chromium, Cobalt, Manganese, Nickel, Lead and their compounds
SMAW ENi-Cl Chromium, Hexavalent Chromium, Cobalt, Lead and their compounds
SMAW ENiCrMo Hexavalent Chromium, Cobalt, Lead and their compounds
SMAW ENi-Cu Chromium, Hexavalent Chromium, Cobalt, Lead and their compounds
GMAW ER1260 Hexavalent Chromium, Cobalt, Manganese, Nickel, Lead and their compounds
GMAW ER316 Cobalt, Lead and their compounds
GMAW ER5154 Hexavalent Chromium, Cobalt, Nickel, Lead and their compounds
GMAW ERNiCrMo Hexavalent Chromium, Cobalt, Lead and their compounds
GMAW ERNiCu Hexavalent Chromium, Cobalt, Lead and their compounds

Part 4 releases

Total Particulate Matter (TPM) or Particulate Matter less than or equal to 10 micrometers (µm) (PM 10) Footnote**: SMAW
Electrode type Emission factorFootnote1 Units
14Mn-4Cr 81.6 grams (g)/kg of electrode consumed
E11018 16.4 g/kg of electrode consumed
E308 10.8 g/kg of electrode consumed
E310 15.1 g/kg of electrode consumed
E316 10 g/kg of electrode consumed
E410 13.2 g/kg of electrode consumed
E6010 25.6 g/kg of electrode consumed
E6011 38.4 g/kg of electrode consumed
E6012 8 g/kg of electrode consumed
E6013 19.7 g/kg of electrode consumed
E7018 18.4 g/kg of electrode consumed
E7024 9.2 g/kg of electrode consumed
E7028 18 g/kg of electrode consumed
E8018 17.1 g/kg of electrode consumed
E9015 17 g/kg of electrode consumed
E9018 16.9 g/kg of electrode consumed
ECoCr 27.9 g/kg of electrode consumed
ENi-Cl 18.2 g/kg of electrode consumed
ENiCrMo 11.7 g/kg of electrode consumed
ENi-Cu 10.1 g/kg of electrode consumed
Particulate Matter less than or equal to 2.5 µm (PM 2.5) Footnote***: SMAW
Electrode type Emission factorFootnote1 Units
14Mn-4Cr 61.2 g/kg of electrode consumed
E11018 12.3 g/kg of electrode consumed
E308 8.1 g/kg of electrode consumed
E310 11.325 g/kg of electrode consumed
E316 7.5 g/kg of electrode consumed
E410 9.9 g/kg of electrode consumed
E6010 19.2 g/kg of electrode consumed
E6011 28.8 g/kg of electrode consumed
E6012 6.0 g/kg of electrode consumed
E6013 14.775 g/kg of electrode consumed
E7018 13.8 g/kg of electrode consumed
E7024 6.9 g/kg of electrode consumed
E7028 13.5 g/kg of electrode consumed
E8018 12.825 g/kg of electrode consumed
E9015 12.75 g/kg of electrode consumed
E9018 12.675 g/kg of electrode consumed
ECoCr 20.925 g/kg of electrode consumed
ENi-Cl 13.65 g/kg of electrode consumed
ENiCrMo 8.775 g/kg of electrode consumed
ENi-Cu 7.575 g/kg of electrode consumed
GMAW for applicable Part 4 substances and applicable electrode types
Electrode type Applicable substance Emission factor (EF)Footnote1 Units
E308L PM10, TPMFootnote** 5.4 g/kg of electrode consumed
E308L PM2.5Footnote*** 4.05 g/kg of electrode consumed
E70S PM10, TPMFootnote** 5.2 g/kg of electrode consumed
E70S PM2.5Footnote*** 3.9 g/kg of electrode consumed
ER1260 PM10, TPMFootnote** 20.5 g/kg of electrode consumed
ER1260 PM2.5Footnote*** 15.375 g/kg of electrode consumed
ER316 PM10, TPMFootnote** 3.2 g/kg of electrode consumed
ER316 PM2.5Footnote*** 2.4 g/kg of electrode consumed
ER5154 PM10, TPMFootnote** 24.1 g/kg of electrode consumed
ER5154 PM2.5Footnote*** 18.075 g/kg of electrode consumed
ERNiCrMo PM10, TPMFootnote** 3.9 g/kg of electrode consumed
ERNiCrMo PM2.5Footnote*** 2.925 g/kg of electrode consumed
ERNiCu PM10, TPMFootnote** 2 g/kg of electrode consumed
ERNiCu PM2.5Footnote*** 1.5 g/kg of electrode consumed
FCAW for all applicable Part 4 substances and applicable electrode types
Electrode type Applicable substance Emission factor (EF)Footnote1 Units
E110 PM10, TPMFootnote** 20.8 g/kg of electrode consumed
E110 PM2.5Footnote*** 15.6 g/kg of electrode consumed
E11018 PM10, TPMFootnote** 57 g/kg of electrode consumed
E11018 PM2.5Footnote*** 42.75 g/kg of electrode consumed
E308LT PM10, TPMFootnote** 9.1 g/kg of electrode consumed
E308LT PM2.5Footnote*** 6.825 g/kg of electrode consumed
E316LT PM10, TPMFootnote** 8.5 g/kg of electrode consumed
E316LT PM2.5Footnote*** 6.375 g/kg of electrode consumed
E70T PM10, TPMFootnote** 15.1 g/kg of electrode consumed
E70T PM2.5Footnote*** 11.325 g/kg of electrode consumed
E71T PM10, TPMFootnote** 12.2 g/kg of electrode consumed
E71T PM2.5Footnote*** 9.15 g/kg of electrode consumed
SAW for all applicable Part 4 substances and applicable electrode types
Electrode type Applicable substances Emission factor (EF)Footnote1 Units
EM12K PM10, TPMFootnote** 0.05 g/kg of electrode consumed
EM12K PM2.5Footnote*** 0.0375 g/kg of electrode consumed

Note on emissions factors

The default emission factors are used in the table above, however if you have a site specific emission factor you would prefer to use you may enter it in the emission factor column.  If you choose to insert your own emission factor ensure that the units have been converted accordingly. 

The emission factors used in this spreadsheet are based on uncontrolled emissions.  If you are using an emission control device you will have to adjust the emissions calculated by this spreadsheet according to the following formula:

Controlled emissions = Uncontrolled emission x ((100 - control efficiency)/100)

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