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High Consequence Areas Pipeline Assessment Intervals Is there a need for change

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High Consequence Areas Pipeline Assessment Intervals Is there a need for change

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    1. High Consequence Areas & Pipeline Assessment Intervals –Is there a need for change? Terry Boss Sr. VP Environment Safety and Operations Interstate Natural Gas Association of America

    2. Outline Natural Gas and Transportation Management of Public Risk Results of the IMP Program Requesting Flexibility in IMP Program Schedule Ongoing Initiatives to Improve Performance

    3. Natural Gas and Transportation Primarily Methane – Hydrogen with some Carbon Swamp Gas Lower Density of Energy – Gaseous Locations of Supply is Diverse Locations of Market is Diverse Transportation by Pipelines is Most Feasible “Bridge” Fuel Primary Risk is Fire Lighter than Air Limited Ignition Range Heat Radiation based on Quantity

    4. 4 Market and Population is Dispersed

    5. First the focus is on Supply Side Then I will turn to the Demand Side Finally, I will elaborate on the delivery systemFirst the focus is on Supply Side Then I will turn to the Demand Side Finally, I will elaborate on the delivery system

    6. Interstate Natural Gas Pipelines

    7. More Interstate Natural Gas Pipeline Information www.ingaa.org

    8. Managing Public Risk Natural Gas Transmission Pipeline Safety Development

    9. Pipeline Safety - Layers of Protection Example

    10. Natural Gas Transmission Pipeline Risk Management biased by Population Density Design Design Classes Materials Strength of Pipe Construction Construction Techniques Operation Operating pressures and Practices Inspection Frequency and Type of Inspection Maintenance

    11. 11 Example “High Consequence Area”

    12. Worst Case Consequence Analysis

    14. Pictorial of a High Consequence Area for Natural Gas Overlaid on the Class Location System

    16. Ongoing Performance Metrics -PHMSA

    17. INGAA Foundation Report

    18. Probability of Failure

    19. Types Failures Static Anomalies Detrimental Non - Detrimental Time Independent Defects Excavation Damage Weather Terrorist Time Dependent Defects Corrosion Cracking

    20. Manage Time Dependent Defects Manage Time Dependent Effects Inline Inspection Pressure Test Direct Assessment Other Approved Methods

    21. Integrity Assessment Technology Split

    22. GAO Report (Sept 2006)

    23. Timeline For IMP

    24. Interaction of Baseline and Continuing Assessments

    25. Condition of gas transmission pipelines are better than original public perception

    26. GAO concludes that 7 year reassessment period is conservative

    27. Requesting Flexibility in IMP Program Schedule

    29. Congressional Testimony - March 2008

    30. Number of Reportable Incidents

    31. Number of Immediate Repairs

    32. Number of Scheduled Repairs

    34. Ongoing Initiatives to Improve Performance Tools Processes Procedures Implementation

    35. Cased Pipeline Integrity Assessment Workshop

    36. Anomaly Assessment and Repair Workshop - October 22, 2008

    37. Conclusions Natural Gas is a Very Important Energy Source Flexible and Readily Available Bridge Fuel for Climate Change Energy Security Public Risk Can and Is Being Managed Flexibility in the IMP Program is Very Desirable Commitment to Ongoing Improvement

    38. Background Material COMPARISON OF INTEGRITY MANAGEMENT ASSESSMENT TECHNIQUES FOR NATURAL GAS TRANSMISSION PIPELINES www.ingaa.org F-2007-09 NATURAL GAS PIPELINE SAFETY Risk-Based Standards Should Allow Operators to Better Tailor Reassessments to Pipeline Threats www.gao.gov GAO-06-945 Integrity Management Plan Metrics http://primis.phmsa.dot.gov/gasimp/PerformanceMeasures.htm PHMSA Workshops Public Workshop to gather comments on Special Permit and Criteria Discussion for 7-year Reassessments http://www.phmsa.dot.gov/portal/site/PHMSA/menuitem.ebdc7a8a7e39f2e55cf2031050248a0c/?vgnextoid=4aeb8defc8de6110VgnVCM1000001ecb7898RCRD&vgnextchannel=5296519d7e818110VgnVCM1000009ed07898RCRD&vgnextfmt=print Cased Pipeline Integrity Assessment Workshop https://primis.phmsa.dot.gov/meetings/MtgHome.mtg?mtg=54 Anomaly Assessment and Repair Workshop https://primis.phmsa.dot.gov/meetings/MtgHome.mtg?mtg=55 Congressional Hearing The Pipeline Inspection, Protection, Enforcement, and Safety Act of 2006: Implementation Review and Discussion of Safety Reassessment Intervals for Natural Gas Pipelines; Subcommittee on Energy and Air Quality Wednesday, March 12, 2008 http://energycommerce.house.gov/cmte_mtgs/110-eaq-hrg.031208.PIPE.shtml

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