Enhanced Vapor Recovery Workshop January 19, 2000 Enhanced Vapor Recovery Workshop January 19, 2000...

Enhanced Vapor Recovery Enhanced Vapor Recovery Workshop January 19, 2000Workshop January 19, 2000

New Test ProceduresNew Test ProceduresSpillageSpillage (TP-201.2C)(TP-201.2C)

““Dripless” NozzlesDripless” Nozzles (TP-201.2D)(TP-201.2D)

Pressure Integrity ofPressure Integrity of

Phase I Drop Tubes Phase I Drop Tubes (TP-201.2O)(TP-201.2O)

Spillage Test Procedure Spillage Test Procedure TP-201.2CTP-201.2C

Current ProcedureCurrent Procedure

Calibration at each fueling locationCalibration at each fueling location

Three trials at each of 1, 5 and 25 mlThree trials at each of 1, 5 and 25 ml

Ignores spills less than 1 ml in sizeIgnores spills less than 1 ml in size

New ProcedureNew Procedure

One calibration per facilityOne calibration per facility

Three trials at 1, 2, 3, 4, 5, 10, 25 and 50 mlThree trials at 1, 2, 3, 4, 5, 10, 25 and 50 ml

Trials are averaged and Calibration Graph is Trials are averaged and Calibration Graph is generated.generated.

All spills of 1 drop or more includedAll spills of 1 drop or more included

Spillage Test Procedure Spillage Test Procedure TP-201.2CTP-201.2C

Calibration Graph

Spill Area versus Spill Volume

1.0

2.0

3.0

4.0

5.0

6.0

7.0

0.0 1.0 2.0 3.0 4.0

ln [Spill Volume (ml)]

TP-201.2FTP-201.2F“Dripless” Nozzles“Dripless” Nozzles

No more than 1 drop per fueling.No more than 1 drop per fueling.

Proposed Test MethodologyProposed Test Methodology Customer asked if fueling is to be a fill-upCustomer asked if fueling is to be a fill-up If yes, CARB staff requests to fuel vehicleIf yes, CARB staff requests to fuel vehicle Fueling is at high clip or, if no clip, fully openFueling is at high clip or, if no clip, fully open When nozzle shuts off, wait (timed) 10 secs.When nozzle shuts off, wait (timed) 10 secs. Remove nozzle from fillpipeRemove nozzle from fillpipe Away from car, point nozzle downwardAway from car, point nozzle downward Observe for 5 secs. and record dripsObserve for 5 secs. and record drips

Magnitude of Emissions From Magnitude of Emissions From Spillage and “Dripless” NozzlesSpillage and “Dripless” Nozzles

1998 - 14.2 Billion Gallons of Gasoline Sold 1998 - 14.2 Billion Gallons of Gasoline Sold in California in California

Assume 10 gallons and 1 drop per fuelingAssume 10 gallons and 1 drop per fueling

20 drops = 1 ml20 drops = 1 ml

3785 ml = I gallon3785 ml = I gallon

6.24 pounds per gallon of gasoline6.24 pounds per gallon of gasoline

1 drop/10 gal fueling = 1 drop/10 gal fueling = 58.4 TPY58.4 TPY in CA in CA

TP-201.2OTP-201.2OPressure Integrity of Phase IPressure Integrity of Phase I

Drop Tube Protection DevicesDrop Tube Protection Devices

• UST Pressure Reduced to Zero Gauge UST Pressure Reduced to Zero Gauge PressurePressure

• Test Cap Assembly Attached to Drop TubeTest Cap Assembly Attached to Drop Tube• Nitrogen Introduced at Maximum Allowable Nitrogen Introduced at Maximum Allowable

LeakrateLeakrate

• Pressure In Drop Tube Must Reach At Least Pressure In Drop Tube Must Reach At Least

2” W.C. To Pass2” W.C. To Pass

Pressure Integrity of Phase IPressure Integrity of Phase IDrop Tube Protection DevicesDrop Tube Protection Devices

• Straight Drop TubesStraight Drop Tubes• No Allowable No Allowable

LeakrateLeakrate

Pressure Integrity of Phase IPressure Integrity of Phase IDrop Tube Protection DevicesDrop Tube Protection Devices

• Overfill ProtectionOverfill Protection• Allowable Leakrate Allowable Leakrate

as Specified in as Specified in CP - 201CP - 201

Field Test ResultsField Test Results

ORVR Vehicle Impact On Balance Vapor RecoveryORVR Vehicle Impact On Balance Vapor Recovery

Pilot Field Study of PV Valve Pressure Vacuum Pilot Field Study of PV Valve Pressure Vacuum Performance Specifications As Per TP-201.2B, Performance Specifications As Per TP-201.2B, Appendix 1 Appendix 1

ORVR Vehicle Impact On ORVR Vehicle Impact On

Balance Vapor RecoveryBalance Vapor Recovery

Basic Station LayoutBasic Station LayoutBalance SystemBalance System

2 Dispensers2 Dispensers4 Nozzles4 NozzlesCoaxial Phase I on Single 12K Gallon USTCoaxial Phase I on Single 12K Gallon USTSingle P/V Vent ValveSingle P/V Vent ValveMonthly Throughput of Monthly Throughput of 10,000 Gallons 10,000 Gallons

ORVR Vehicle Population > 95%ORVR Vehicle Population > 95%

Initial Station UST Pressure Profile

ORVR Vehicle Impact On Balance Vapor Recovery

-8

-6

-4

-2

0

2

4

Two Week IntervalDecember 1-14, 1999

US

T P

ress

ure

ORVR Impact on Balance Vapor Recovery Systems(Bad Phase I Delivery)

-8.00

-6.00

-4.00

-2.00

0.00

2.00

4.00

6.00

November 17-19, 1999 (Midnight - Midnight)

US

T P

ress

ure

TP-201.2B, Appendix 1 Determination of Pressure and Vacuum Performance

Specifications For Pressure/Vacuum Vent Valves

• Pilot StudyPilot Study

• Mobile Test CartMobile Test Cart

• Testing New P/V Testing New P/V Valves From Parts Valves From Parts HousesHouses

Questions?Questions?