This topic provides a step-by-step description of how to enter Subpart Y summary information about this facility.
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Adding Adding or Updating Summary Information for this Facility
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Petroleum Refineries must specify a CH4 calculation method for uncontrolled blowdown systems, if any. Blowdown systems where the uncondensed gas stream is routed to a flare or similar control device is considered to be controlled.
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Step 1: Select Estimation Method
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Step 2b: Equation Y-20 Summary and Result
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The annual CH4 emissions from blowdown systems is required. To calculate this value:
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Petroleum Refineries must specify the method used to calculate the reported equipment leak emissions.
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Step 1: Select Estimation Method
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If the “Use process-specific methane composition data and any of the emission estimation procedures provided in the Protocol for Equipment Leak Emissions Estimates” option was selected then the following screen will display.
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Enter the following data:
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Petroleum Refineries must specify the cumulative annual methane emissions (in metric tons of each pollutant emitted) for loading operations.
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Step 1: Loading Operations Emissions Information
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Click the link titled "ADD a Vessel Type".
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Specify the type of vessel:
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Click the link titled "ADD a Material" while adding or editing a Vessel type.
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Specify the type of material:
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When finished, click NEXT
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Step 2: Indicate emissions calculation methods (if applicable)
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When finished, click NEXT
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Step 3: Enter emissions information and additional data
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After you save the data on this page, the next time you open the page, the calculator on the top of the page will display the CH4 emissions for stored liquids other than unstabilized crude oil and unstabilized crude oil storage, rounded to the nearest metric ton. The value displayed is for informational purposes only.
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Updating Sour Gas Sent Off-Site
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When finished, click NEXT
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Step 2: Enter emissions information and additional data (if applicable)
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After you save the data on this page, the next time you open the page, the calculator on the top of the page will display the CO2 emissions for sour gas sent off-site, rounded to the nearest metric ton. The value displayed is for informational purposes only.
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Updating Delayed Coking
Petroleum refineries must report the cumulative CH4 emissions from all delayed coking units at the facility.
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- A unique unit name or identifier and an optional description or label (see also About Unique Unit Names)
- The number of coking drums in the set
- The basis for the mole fraction of methane in the coking gas
- The basis for the volumetric void fraction of the coke vessel prior to steaming
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To add a coking drum set, click the link titled "ADD a Coking Drum Set" below the COKING DRUM SETS table, enter the required information, then click SAVE. Repeat for each coking drum set at your facility.
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Step 2: Save Your Data
When you have finished entering all delayed coking unit emissions information and additional data, click SAVE.
After you save the data on this page, the next time you open the page, the calculator on the top of the page will display the cumulative CH4 emissions from all delayed coking units at the facility, rounded to the nearest metric ton. The value displayed is for informational purposes only.only.
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#Back to Top
See Also
Screen Errors
Using Cal e-GGRT to Prepare Your Subpart Y Report
Subpart Y Summary Information for this Facility
Subpart Y Delayed Coking Unit Information
Subpart Y Asphalt Blowing Unit Information
Subpart Y Coke Calcining Unit Information
Subpart Y Catalytic Cracking, Fluid Coking, and Catalytic Reforming Unit Information
Subpart Y Flares Unit Information
Subpart Y Process Vents Unit Information
Subpart Y Sulfur Recovery Plant Information
Subpart Y Emissions Information for Process Units Monitored by CEMS
Subpart Validation Report