5900-95 Annual Report - Transmission Segment

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Overview

Partner Info and ToC
Compressor Engines
Equipment Leaks
Pneumatic Controllers
Additional Activities
references

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Sheet 1: Partner Info and ToC

Natural Gas STAR Annual Report - Transmission Segment			Transmission
FORM VERSION: REPORTING SEASON 2021 (for activities completed in 2020)			OMB Control No. 2060-0722 Approval expires XX/XX/202X EPA Form No. 5900-95
RS2021TRANSv1
Partner Name			0
Reporting Year	2020
Use the Table of Contents below to navigate to the different tabs of the form. You can use column B to indicate if you reported data on a specific tab.
Transmission Emission Sources	Data Reported	Information
Compressor Engines	No	Replace reciprocating engines with turbines
Equipment Leaks	No	Directed inspection and maintenance at compressor stations
Pneumatic Controllers	No	Convert high-bleed controllers to low-bleed; convert high-bleed or low-bleed controllers to zero-emitting controllers; remove controllers from service with no replacement
Additional Transmission Activities	No	Use this tab to report all other methane reductions in the Transmission segment. You will be able to select the technology/practice used from the list of Natural Gas STAR Partner Reported Opportunities. If the activity you are reporting is not included in the list, please contact EPA at [email protected]
Update Partner Information (If applicable)
New Partner Name
This collection of information is approved by OMB under the Paperwork Reduction Act, 44 U.S.C. 3501 et seq. (OMB Control No. 2060-0328). Responses to this collection of information are voluntary 42 USC 7403(g). An agency may not conduct or sponsor, and a person is not required to respond to, a collection of information unless it displays a currently valid OMB control number. The public reporting and recordkeeping burden for this collection of information is estimated to range from 20 to 51 hours per response. Send comments on the Agency’s need for this information, the accuracy of the provided burden estimates and any suggested methods for minimizing respondent burden to the Regulatory Support Division Director, U.S. Environmental Protection Agency (2821T), 1200 Pennsylvania Ave., NW, Washington, D.C. 20460. Include the OMB control number in any correspondence. Do not send the completed form to this address.

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Sheet 2: Compressor Engines

Compressor Engines									Return to Table of Contents
Replace reciprocating engines with turbines
Start Year	Eligible Sunset Years for this Activity	Automatically calculate sunsets?	End Year	New or Ongoing?	Calculation Method: Default, Standard, or Other	Calculate Using Default				Calculate Using Standard Calculation							Other Calculation		Provide additional comments or detail about how your company implemented this BMP
						Number of Turbines Installed	Horsepower of Turbine Engines Installed (average)	Hours Turbine Engines were Used (average)	Calculated Total Methane Emission Reduction Based on Default Values {[Number of Turbines Installed]x[Horsepower of Turbine Engines Installed]x[Total Hours Turbine Engines were Used]x[0.234 scf/hp/hr / 1000]}	Number of Reciprocated Engines Retired	Emisison Rate of Reciprocated Engines Retired (Mcf CH4/MMcf of fuel used)	Fuel Consumption of Reciprocated Engines Retired (MMcf/hr)	Number of Turbines Installed	Emisison Rate of Turbines Installed (Mcf CH4/MMcf of fuel used)	Fuel Consumption of Turbines Installed (MMcf/hr)	Calculated Total Methane Emission Reduction Based on Standard Calculation {([Number of Reciprocated Engines Retired]x[Emissions Rate of Reciprocated Engine Retired]x[Fuel Consumption of Reciprocated Engine Retired])-([Number of Turbines Installed]x[Emissions Rate of Turbines Installed]x[Fuel Consumption of Turbines Installed])}	Total Methane Emission Reduction Based on Other Assumptions (Mcf/yr)	Explain Reduction Calculation Used
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Sheet 3: Equipment Leaks

Equipment Leaks							Return to Table of Contents
Directed inspection and maintenance at compressor stations
Year	Total Number of Surveys Conducted	Total Number of Leaks Found	Total Number of Leaks Repaired	Calculation Method: Default or Other	Calculate Using Default		Other Calculation		Provide additional comments or detail about how your company implemented this BMP
					Total Number of Facilities at Which Leaks Repaired	Calculated Total Methane Emission Reduction based on default values {[Total Number of Facilities at Which Leaks Repaired]x[12200 Average Annual Leak Rate per Facility at 70% Efficiency]}	Total Methane Emission Reduction Based on Actual Field Measurement or Other Assumptions (Mcf/yr)	Explain Reduction Calculation Used
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Sheet 4: Pneumatic Controllers

Pneumatic Controllers					Return to Table of Contents
Convert high-bleed controllers to low-bleed; convert high-bleed or low-bleed controllers to zero-emitting controllers; remove controllers from service with no replacement
				Convert high-bleed to low-bleed		Convert high-bleed to zero-bleed/remove from service		Convert low-bleed to zero-bleed/remove from service
Start Year	New or Ongoing?	Average Methane Content of Gas (enter as a decimal; leave blank to use default 95% methane)	Average annual operating hours (leave blank to use default 8760 hours)	Number of controllers converted	Calculated Total Methane Emission Reductions (Mcf/yr)	Number of controllers converted/removed from service	Calculated Total Methane Emission Reductions (Mcf/yr)	Number of controllers converted/removed from service	Calculated Total Methane Emission Reductions (Mcf/yr)	Provide additional comments or detail about how your company implemented this BMP

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Sheet 5: Additional Activities

Additional Transmission Activities							Return to Table of Contents
Start Year	Select the Activity	New or Ongoing?	Eligible Sunset Years for this Activity	Automatically calculate sunsets (if Sunset Years >1)?	End Year	Total Methane Emission Reduction (Mcf/yr)	Basis for Emission Reduction Estimate	Explain Reduction Calculation Used	Describe how your company implemented this activity (e.g., number of units installed or other activities conducted)

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Sheet 6: references

This sheet summarizes values used in calculations in this workbook. If you have questions on any of the values used, please contact EPA at [email protected]
Equipment Leaks
Default Values
Average Annual Leak Rate per Facility1	12,200	mcf/yr
Efficiency2	0.7	percent (expressed as decimal)
Replace Reciprocating Engines with Turbines
Default Values
Average hourly reduction potential3	0.234	scf/hp/hr
Reciprocating compressor exhaust methane emission factor is 0.24 scf/HP-hour. Turbine compressor drivers emission factor is 0.0057 scf/HP-hour. The difference is 0.234 scf/HP-hour.
Pneumatic Controllers
Emission Factors	Source: 40 CFR 98, Table W-3B
Low Continuous Bleed Pneumatic Device Vents	1.37	scf whole gas / hr / device
High Continuous Bleed Pneumatic Device Vents	18.2	scf whole gas / hr / device
Default Values
Operating hours	8760	Assumes 24/7 operation all year
Methane content of natural gas	95%	Source: 40 CFR 98.233(u)(2)(iii)
1 Derived from EPA Report to Congress, 1993.
2 Derived from “Cost Effective Leak Mitigation at Natural Gas Transmission Compressor Stations,” sponsored by the Pipeline Research Committee International (PRCI), EPA and GRI, 1999.
3 Derived from “Methane Emissions from the Natural Gas Industry,” Volume 6, Vented and Combustion Source Summary, co-sponsored by the Gas Research Institute and EPA, June 1996.