# Large Stationary Diesel Engines (> 600 hp)

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

Part 1 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
Part 2 releases
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
Part 4 criteria air contaminants (CAC) releases
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
Part 5 releases
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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