Greenhouse Gas Reporting Help

Prior Year - Reciprocating Compressors

Created by Matthew R. Hill on Dec 14, 2016

Please see Reporting Form Instructions on downloading the blank reporting form and uploading the completed reporting form.
You may also refer to Optional Calculation Spreadsheet Instructions to download the Subpart W calculation spreadsheet.

This page provides an overview of the Subpart W reciprocating compressors source category e-GGRT reporting requirements.

The reciprocating compressors source category is applicable to Onshore Petroleum and Natural Gas Production, Onshore Natural Gas Processing, Onshore Natural Gas Transmission Compression, Underground Natural Gas Storage, Liquefied Natural Gas (LNG) Storage, and LNG Import and Export Equipment.

Indicate if the facility has the source type via the radio buttons.

If the source type is present you must report required elements.

If the facility has the source type, the Best Available Monitoring Methods and Missing Data table must be completed.

For further information, see Best Available Monitoring Methods and Missing Data Reporting.

Reciprocating Compressor Reporting (Onshore Petroleum and Natural Gas Production)

The reporting requirements for Onshore Petroleum and Natural Gas Production differ from the rest of the industry segments for this source type. For Onshore Petroleum and Natural Gas Production, only the following data elements are required to be reported:

The total annual CO₂ emissions from all compressors combined, in metric tons CO₂ [98.236(c)(14)(v)(B)]
The total annual CH₄ emissions from all compressors combined, in metric tons CO₂e [98.236(c)(14)(v)(B)]
Count of compressors [98.236(c)(14)(v)(A)]

Reciprocating Compressor Reporting (Onshore Natural Gas Processing, Onshore Natural Gas Transmission Compression, Underground Natural Gas Storage, Liquefied Natural Gas (LNG) Storage, and LNG Import and Export Equipment)

All applicable industry segments other than Onshore Petroleum and Natural Gas Production must report emissions individually for each reciprocating compressor.

For each compressor, emissions will be reported by mode of operation. Three modes of operation that require emission monitoring are the operating mode, standby, pressurized mode, and the not operating, depressurized mode. Emissions from each mode of operation must be reported if the compressor was ever in that mode at any time during the year.

For each emission source, there are separate reporting fields for if the emission source was measured during the year or if the emission source was not measured and a default emission factor was applied. If one or more sources for a compressor were measured during the year, the emissions should be filled in for the respective measured fields. For any sources that emissions were not directly measured, the not measured field should be reported in place of the measured fields. If BAMM was used and no emission sources were measured, the compressor specific BAMM field should be reported as “yes”, and only the not measured emission fields should be reported. If BAMM was not used in place of direct measurement of at least one mode, then “no” should be entered for the BAMM field. The measured and not measured fields should never both be populated for a given compressor and source type.

The exact reporting requirements are described below:

Operating Mode (required if compressor was ever in that operating mode at any time during the year)	Required Data Elements
All Compressors	Compressor ID Were BAMM Used for This Compressor? (Yes or No) Total annual CO₂ emissions from all modes of operation combined in metric tons CO₂ (98.236(c)(14)(iv)) Total annual CH₄ emissions from all modes of operation combined in metric tons CO₂e (98.236(c)(14)(iv)) Total annual N₂O emissions from all modes of operation combined(mt CO_2e) (98.236(c))
Operating Mode	Annual throughput using an engineering calculation based on best available data (98.236(c)(14)(i)(A)) Were blowdown vents manifolded to rod packing vents for this compressor? (98.236(c)(14)(ii)) Measured OR Not Measured Rod packing CO₂emissions when in operating mode (98.236(c)(14)(i)(C)) Measured OR Not Measured Rod packing CH₄emissions when in operating mode (98.236(c)(14)(i)(C)) Measured OR Not Measured Blowdown vent CO₂emissions when in operating mode (98.236(c)(14)(ii)(c)) Measured OR Not Measured Blowdown vent CH₄emissions when in operating mode (98.236(c)(14)(ii)(c))
Standby, Pressurized Mode	Measured OR Not Measured Blowdown vent CO₂emissions when in standby pressurized mode (98.236(c)(14)(ii)(c)) Measured OR Not Measured Blowdown vent CH₄emissions when in standby pressurized mode (98.236(c)(14)(ii)(c))
Not Operating, Depressurized Mode	Measured OR Not Measured isolation valve leakage CO₂emissions in not operating, depressurized mode (98.236(c)(14)(iii)(C)) Measured OR Not Measured isolation valve leakage CH₄emissions in not operating, depressurized mode (98.236(c)(14)(iii)(C))
For Reciprocating Compressors Venting Emissions to FLARES	Did this compressor vent emissions to a flare? (98.236(c)) Total annual CO₂ emissions from flaring for all modes of operation combined (mt CO₂) (98.236(c)) Total annual CH₄ emissions from flaring for all modes of operation combined (mt CO_2e) (98.236(c)) Total annual N₂O emissions from flaring for all modes of operation combined (mt CO_2e) (98.236(c))
For Reciprocating Compressors in OPERATING MODE	Total time in operating mode (hours) (98.236(c)(14)(i )(B)
For Reciprocating Compressors in OPERATING AND STANDBY, PRESSURIZED MODE	Total time in standby, pressurized mode (hours) (98.236(c)(14)(ii)(A)) Reporter emission factor for blowdown vents (standard cubic feet per hour) (98.236(c)(14)(ii)(B))
For Reciprocating Compressors in NOT OPERATING, DEPRESSURIZED MODE	Total time the compressor is in not operating, depressurized mode (hours) (98.236(c)(14)(iii)(A)) Reporter emission factor for isolation valve emissions (standard cubic feet per hour) (98.236(c)(14)(iii)(B))

Total Emissions

The total emissions roll-up at the top of the sheet reflects the sum of the CO₂ equivalents of each gas emission reported for the source type. These summations are reflected and aggregated on the Introduction tab.