Large Stationary Diesel Engines (> 600 hp)
Download the large stationary diesel engine calculator to help you estimate releases of National Pollutant Release Inventory (NPRI) substances.
Stationary diesel engines greater than 600 horsepower release Part 1, 2, 4 and 5 substances. This release calculator uses default emission factors and can be adapted to use site-specific emission factors. If you want to use a site-specific emission factor, enter it in the emission factor column, but be sure to convert the units correctly.
The spreadsheet calculators use emission factors based on uncontrolled emission sources. If you use an emission control device and the default emission factor is uncontrolled, use this formula to adjust the spreadsheet calculation:
Controlled emissions = uncontrolled emission x ((100 - control efficiency)/100)
Since NPRI reporting thresholds are for the facility as a whole, you may need to combine the air releases you calculate with releases from other sources at your facility.
The following sections explain how the spreadsheet calculator works.
Suggested estimation methodology: emission factor
The general equation for estimation using an emission factor is:
E = A x EF
where:
- E = emissions
- A = activity rate
- EF = emission factor
Input data
A = amount of diesel burned [cubic meters (m3) or Liters (L)]
B = heating value of diesel fuel [Giga Joules (GJ)/m3]Footnote *
C = sulphur content [%] Footnote **
If the amount of diesel in provided in liters, use this formula to convert it to cubic meters:
A[m3] = A[L]/1000
Use the emissions factors from the tables below to calculate the emissions for each substance. To calculate the emissions in tonnes, divide the emissions in kilograms by 1000.
Substance releases
| Substance | Chemical Abstracts Service registry number (CAS RN)1 | Emission factor (EF)2 (***) |
EF units |
|---|---|---|---|
| Acetaldehyde | 75-07-0 | 1.083E-05 x B |
kg/m3 |
| Acrolein | 107-08-8 | 3.388E-06 x B | kg/m3 |
| Benzene | 71-43-2 | 3.336E-04 x B | kg/m3 |
| Formaldehyde | 50-00-0 | 3.392E-05 x B | kg/m3 |
| Naphthalene | 91-20-3 | 5.589E-05 x B | kg/m3 |
| Propylene | 115-07-1 | 1.199E-03 x B | kg/m3 |
| Toluene | 108-88-3 | 1.208E-04 x B | kg/m3 |
| Xylene (all isomers) | 1330-20-7 | 8.298E-05 | kg/m3 |
| Substance | Chemical Abstracts Service registry number (CAS RN)1 | Emission factor (EF)2(***) |
EF units |
|---|---|---|---|
| Acenaphthene | 83-32-9 | 2.012E-06 x B | kg/m3 |
| Acenaphthylene | 208-96-8 | 3.968E-06 x B | kg/m3 |
| Anthracene | 120-12-7 | 5.288E-07 x B | kg/m3 |
| Benz[a]anthracene | 56-55-3 | 2.674E-07 x B | kg/m3 |
| Benzo[b]fluoranthene | 205-99-2 | 4.772E-07 x B | kg/m3 |
| Benzo[k]fluoranthene | 207-08-9 | 4.686E-08 x B | kg/m3 |
| Benzo[a]pyrene | 50-32-8 | 5.525E-08 x B | kg/m3 |
| Chrysene | 218-01-9 | 6.578E-07 x B | kg/m3 |
| Benzo[ghi]perylene | 191-24-2 | 1.195E-07 x B | kg/m3 |
| Dibenz[a,h]anthracene | 53-70-3 | 7.438E-08 x B | kg/m3 |
| Fluoranthene | 206-44-0 | 1.733E-06 x B | kg/m3 |
| Fluorene | 86-73-7 | 5.503E-06 x B | kg/m3 |
| Indeno[1,2,3-cd]pyrene | 193-39-5 | 8.899E-08 x B | kg/m3 |
| Phenanthrene | 85-01-8 | 1.754E-05 x B | kg/m3 |
| Pyrene | 129-00-0 | 1.595E-06 x B | kg/m3 |
| Substance | Chemical Abstracts Service registry number (CAS RN)1 | Emission factor (EF)2 (***) |
EF units |
|---|---|---|---|
| Carbon monoxide (CO) | 630-08-0 | 0.365 x B | kg/m3 |
| Sulphur dioxide (SO2) | 7446-09-5 | 0.434 x B x C | kg/m3 |
| Oxides of nitrogen (NOx), expressed as nitrogen dioxide (NO2) | 11104-93-1 | 1.376 x B | kg/m3 |
| Volatile organic compounds (total) (VOCs) | l | 0.035 x B | kg/m3 |
| Total particulate matter (TPM) | Footnote l | 0.027 x B | kg/m3 |
| Particulate matter less than or equal to 10 micrometers (µm) (PM10) | l | 0.021 x B | kg/m3 |
| Particulate matter less than or equal to 2.5 µm (PM2.5) | l | 0.021 x B | kg/m3 |
| Substance | Chemical Abstracts Service registry number (CAS RN)1 | Emission factor (EF)(2)(***) |
EF units |
|---|---|---|---|
| Benzene | 71-43-2 | 3.336E-04 x B | kg/m3 |
| Formaldehyde | 50-00-0 | 3.392E-05 x B | kg/m3 |
| Propylene | 115-07-1 | 1.199E-03 x B | kg/m3 |
| Toluene | 108-88-3 | 1.208E-04 x B | kg/m3 |
| Xylene (all isomers) | 1330-20-7 | 8.298E-05 x B | kg/m3 |
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