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Overview
This help page provides guidance for working with the supplemental Subpart X calculation spreadsheets. The spreadsheets calculate the CO2 process emissions in accordance with Equations X-1 through X-4 in subpart X. A facility must use these equations to calculate emissions when complying with the mass balance option in subpart X. As stated in §98.242, process emissions for the mass balance option are the total CO2 generated in the process itself plus the CO2 generated by combustion of off-gas from the process. The guidance provides step-by-step instructions for the following tasks:
- #Selecting Selecting the Appropriate Calculation Spreadsheet
- #Downloading Downloading a Calculation Spreadsheet
- #General General Information on Using a Calculation Spreadsheet
- Using the Equation X-1 Calculation Spreadsheet
- Using the Equation X-2 Calculation Spreadsheet
- Using the Equation X-3 Calculation Spreadsheet
- Using the Equation X-4 Calculation Spreadsheet
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The guidance provided in this section applies to each of the calculation spreadsheets for Subpart X. Additional guidance is provided for each individual calculation spreadsheet in the sections below.
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Multiple Process Units
Users with multiple process units should use separate calculation spreadsheets for each process unit. Users should not aggregate data for multiple process units when using these calculation spreadsheets.
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Next, enter the requested information in the green input cells in the General Input Data table.
Next, enter the requested information in the green input cells in the Input Data for Feedstocks table.
Then, enter the requested information in the green input cells in the Input Data for Products table.
The calculation spreadsheet will calculate the net contribution to calculated emissions from all carbon-containing gaseous feedstocks and products in a process unit. This calculated value will be displayed in the red-bordered cell with yellow fill at the bottom of the spreadsheet. This value should be entered in the Equation X-4 Calculation Spreadsheet for this process unit.
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Using the Equation X-2 Calculation Spreadsheet |
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Next, enter the requested information in the green input cells in the Input Data for Feedstocks table.
Then, enter the requested information in the green input cells in the Input Data for Products table.
The calculation spreadsheet will calculate the net contribution to calculated emissions from all carbon-containing liquid feedstocks and products in a process unit. This calculated value will be displayed in the red-bordered cell with yellow fill at the bottom of the spreadsheet. This value should be entered in the Equation X-4 Calculation Spreadsheet for this process unit.
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Using the Equation X-3 Calculation Spreadsheet |
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Next, enter the requested information in the green input cells in the Input Data for Feedstocks table.
Then, enter the requested information in the green input cells in the Input Data for Products table.
The calculation spreadsheet will calculate the net contribution to calculated emissions from all carbon-containing solid feedstocks and products in a process unit. This calculated value will be displayed in the red-bordered cell with yellow fill at the bottom of the spreadsheet. This value should be entered in the Equation X-4 Calculation Spreadsheet for this process unit.
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Using the Equation X-4 Calculation Spreadsheet |
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Next, enter the requested information in the green input cells in the Input Data for Feedstocks table.
The calculation spreadsheet will calculate the annual CO2 process emissions in metric tons per year for a process unit. This calculated value will be displayed in the red-bordered cell with white fill at the bottom of the spreadsheet. This value should be entered in e-GGRT for this process unit.
