Natural Gas Pipeline Safety: Integrity Management Benefits Public Safety, but Consistency of Performance Measures Should be Improved Page: 3 of 42
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Contents
Letter 1
Results in Brief 2
Background 4
Gas Integrity Management Benefits Public Safety, although
Operators Have Some Implementation Concerns, and
Performance Measures Could Be Improved 7
PHMSA and State Pipeline Agencies Plan to Use Inspection Tools
Developed by PHMSA to Complete the Initial Round of
Inspections by 2009 16
Conclusions 23
Recommendations for Executive Action 23
Agency Comments and Our Evaluation 23
Appendixes
Appendix I: Scope and Methodology 26
Appendix II: Results of State Pipeline Agency Survey 30
Appendix III: Contact and Staff Acknowledgments 37
Table Table 1: Integrity Management Performance Measures Reported by
Operators as of December 31, 2005 13Figures
Figure 1: Gas Pipeline System
Figure 2: Integrity Management Process for Gas Transmission
Pipelines
Figure 3: Highly Populated Areas within 660 Feet of a Natural Gas
Transmission PipelineAbbreviations
DOT
IMP
OPS
PHMSADepartment of Transportation
gas integrity management program
Office of Pipeline Safety
Pipeline and Hazardous Materials Safety AdministrationGAO-06-946 Natural Gas Pipeline Safety
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United States. Government Accountability Office. Natural Gas Pipeline Safety: Integrity Management Benefits Public Safety, but Consistency of Performance Measures Should be Improved, report, September 8, 2006; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc302850/m1/3/: accessed April 18, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.