cargo tank program emissions and regulation development

Cargo Tank ProgramEmissions and Regulation Development

Public Workshop

March 2, 2005

ARB, MLD 1st Floor Conference Room

1927 13th Street Sacramento, CA 95814

Topics of Discussion

• Background

• Emission Sources

• Inventory Refinement Actions

• Regulation Development Actions

• Closing Remarks

2


• Background




• Closing Remarks

3

BackgroundState Implementation Plan Obligations

• Clean Air Act established standards for criteria

pollutants

• State developed plan (SIP) to reduce criteria

pollutants in ambient air

• ARB must achieve 2010 SIP obligations

• SIP specifies reductions from gasoline cargo

tankers

4


• Background




• Closing Remarks

5

Emission Sources Product Delivery Hoses

• Calculation of product hose emissions

• Calculating wetted wall losses

6


• Approximately 15 billion gallons of gasoline delivered in California in 2001

– (National Petroleum News, Market Facts July 2002)

• 41 million gallons per day

• Approximately 10,250 deliveries per day (assuming 4,000 gallons per delivery)

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• Hoses/elbows transported open to the atmosphere either in tubes or on trays

• One 20’ product hose used for each delivery

• Based upon number of daily deliveries and lab testing

• Emissions of approximately 1 ton per day from wetted hose losses (314 gallons of lost product)

8

Emission Sources Cargo Tank Degassing

• Degassing only required prior to annual

certification testing

• No existing requirement for degassing

prior to repair

9

Emission Sources Cargo Tank Degassing

• Variables associated with degassing

– Inventory accuracy (population and capacity)

– Degassing frequency

– Control method used in degassing

– Volume of liquid retained in bottom of tank after

delivery

• Initial emissions estimate of 5 tons per day

10

Emission Sources In-Use Violation Database Search Results

Review of Past Cargo Tank NOVs

• Looking for trends in equipment failures

• Looking for common repairs

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Review of Past Cargo Tank NOVs 2000 - 2003

• 217 Closed Case Files Reviewed

• Information Gathered Included

– Date Of NOV

– CT Number

– Violation Recorded

– Test Procedure Used

– Corrective Action Taken

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ARB Enforcement Division Cargo Tank NOV Sample State of California

Air Resources Board No. _____________

Enforcement Division

NOTICE OF VIOLATION

DATE____xxxxxxxxxxx__ TIME _________________________

COMPANY NAME_____________________________________________________________

ADDRESS___________________________________________________________________ Number Street City Zip

TELEPHONE NUMBER ( ) ________________________

CT NUMBER____xxxxxxxx____________ LICENSE NUMBER____________________

CT NUMBER____________________________ LICENSE NUMBER____________________

FACILITY___________________________________________________________________

ARB INSPECTOR_____________________________ ___________________________ Name Signature

Violation: Non-compliance with section 41962 of the Health and Safety Code; Certification and Test Proceduresincorporated by California Code of Regulations, Title 17, Section 94014.

_____x___ Uncertified cargo tank

_____x__ Exceeded allowable leak-rate criteria Vapor Leak__x_ Liquid Leak__x__

Pressure Test_x__ Internal Vapor Valve__x__

TEST PROCEDURE Static Pressure Performance ( TP 204.2 )__x__

Determination of Leaks ( TP 204.3 )__x__

Violation, other: Applicable Section_______________________________________________

Section 41962 of the Health and Safety Code and the Certification and Test Procedures provide that no person shalloperate or allow the operation of a cargo tank transporting gasoline and required to have a vapor recovery system unlessthe cargo tank is certified and maintained in compliance with the State Board’s requirements for certification.

Requirements

General Requirements, Certification Procedure CP-204 (7.3.1) It is the general requirements that any certified vaporrecovery system shall comply with the specifications of certification which result from the application of this procedure tosuch vapor recovery systems.

Specific Requirements, Certification Procedure CP-204 (7.3.2) It shall be a specification of certification that each cargotank shall comply with the annual and year round leak rate requirements.

Failure of a cargo tank to comply with these requirements shall be a violation of that cargo tank’s specification ofcertification.

OPERATOR_____________________________ _______________________________ Name Signature

ENF-03 SEE REVERSE SIDE 13


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Cargo Tank Violation Breakdown

12%

2%

4%

25%

57%

Uncertified Cargo Tank - 25

Vapor Leak - 5

Liquid Leak - 8

Pressure Test - 53

Internal Vapor Valve - 120


29%

12%

3%10%

13%

4%

9%

2%

5%

0%

1%

4% 5%

Replace Gaskets - 72

Replace PV Valve 29

Repaired PV Valve 8

Replace Internal VV - 24

Repaired Internal VV - 33

Weld Cracks - 9

Tightened Gaskets and or Fittings - 21

Replace Vapor Rail Hose 6

No Maintenance Performed - 13

Install Turnover Rail Plug - 1

Repair Liquid Leak 2

No Maintenance Specified - 10

Replace OR Repair Vapor Hoods - 12

Repaired Scully Leak - 2

Replace Dome Lid - 1

Replace leaking Loading Head - 1

Replace 4" Vapor Connection - 1

Replace Kamlock Cams -1

R&R Poppet Seal - 115

Repairs Reported on Cargo Tank Violation Reports


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120 Internal Vapor Valve ViolationsListed Repairs

32%

5%

4%

14%

18%

3%

7%

2%

7%

4%

2%

1%

1%

Replace Gaskets -47

Replace PV Valve - 7

Repaired PV Valve - 6

Replace Internal VV - 21

Repaired Internal VV -26

Weld Cracks - 5

Tightened Gaskets and or Fittings - 10

Replace Vapor Rail Hose - 3

No Maintenance Performed 11

No Maintenance Specified - 6

Replace OR Repair Vapor Hoods - 3

Repaired Scully Leak - 1

Replace Dome Lid - 1


Further Review of Past Cargo Tank NOVs

• Record Certification Test Date of CT’s just prior to

issuance of NOV

• Use this information to develop average time

between certification test date and date of NOV.

• Information may be used to develop equipment

durability and pressure integrity trends

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Further Review of Past Cargo Tank NOVs

• Review inspection forms and record final pressures from testing

• Information will be used to determine average leakrate of failures

• Current emission estimate due to marginal exceedance of allowable leakrate: about 12 tons per day

• We are convinced the final estimate will be significantly higher than 12 tons per day

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Emission Sources In-Use Operation of PV Vent Valve

• Ambient temperature and sunlight affect tank pressure

• Vapor filled tank pressurizes to cracking pressure rapidly

• PV vent valve cracking pressures are higher under static conditions than dynamic conditions (road vibrations)

• Emission impact due to dynamic effect on PV vent valve to be determined

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Emission Sources Initial Emission Estimates

• Product delivery hoses: 1 ton per day• Degassing: 5 tons per day• In-Use

– Violation Database: 12 tons per day– Pressure Vacuum vent valve: to be

determined• Combined initial emissions estimate at least

18 tons per day - we expect the estimate to be much higher

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• Background




• Closing Remarks

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Inventory Refinement Actions Degassing Survey

• Degassing survey drafted

• Initially directed to repair shops

• Changes to survey based on initial comments

response requested by March 16th

• Conduct pilot survey to be completed before

April 1st

• Survey sent to industry response requested by

April 15th

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Inventory Refinement Actions 5 Point Test

• Purpose – Obtain data for estimating PV vent emissions

• Record CT pressures and ambient temperatures during delivery cycle– At rack after loading– At station prior to delivery– At station after delivery– At station just before leaving– At rack prior to loading

• Record time and distance between rack and station

23


• Camlock caps with pressure relief valves

• Analog pressure gauge

• Temperature transducer (not shown)

24


• Industry involvement– access to trucks during delivery cycles

– No response from initial request of November 2004

• Initial testing period – approximately one month

• Initial goal – 50 observed delivery cycles

25


• Background




• Closing Remarks

26

Regulation Development Actions Possible Control Measures

• Hoses

– Require poppetted adapters and/or dust caps for

cargo tank fittings and product delivery hoses

• Degassing

– Require controlled degassing for repair

27

Regulation Development Actions Possible Control Measures

• In-Use– Add butterfly valve to vapor return line

– Redesign of internal vapor valve

– Develop specifications of gasket materials

– Cargo tank component certification program

– New pressure/vacuum vent specifications

– Cargo tank onboard diagnostic system for monitoring system pressure integrity

– Semi-annual certification

28

Regulation Development Actions Modifications to Test Procedures

• Develop new test procedures as necessary

• Modify existing test procedures as necessary

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Regulation Development Actions Establish Working Group

• Department of Transportation (DOT)

• US Environmental Protection Agency

• Cargo Tank Industry

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• Background




• Closing Remarks

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Closing RemarksFuture Plans

• Reassess emission estimates– Hoses - Spring 2005

– Degassing - Spring 2005

– In-Use - Fall 2005

• Work with industry in developing

control measures - 2006

• Board hearing - end of 2006

• Implementation - 2008 and beyond

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Cargo Tank ProgramWebsite

• http://www.arb.ca.gov/enf/cargotanks/cargotanks.htm

– Information about program

– Copies of test procedures, presentations, etc.

– Workshop notifications

– Sign up for e-mail notifications of upcoming events

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ARB Contacts

• Ranjit Bhullar - Manager– phone - (916) 322-0223– email - [email protected]

• Paul Thalken - Air Resources Engineer– phone - (916) 445-9499– email - [email protected]

• Chris Clarke - Air Resources Engineer– phone - (916) 324-1278– email - [email protected]

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ARB Contacts

• Neil Nipper - Air Resources Engineer– phone - (916) 445-9391– email - [email protected]

• Kathryn Gugeler - Air Pollution Specialist– phone - (916) 322-0221– email - [email protected]

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Questions?

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cargo tank program emissions and regulation development

Documents

cargo tank programemissions

license number

gallons of lost product

gasoline cargo tankers

gallons of gasoline

number of daily deliveries

wetted hose losses

plan sip