Transmission Pipelines and Land Use A Risk-Informed Approach -- Special Report 281 (2004) / Chapter Skim
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B Pipeline Safety Data and Trends in the United States
B Pipeline Safety Data and Trends in the United States
Pages 79-87
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From page 79... ...
OPS maintains the Hazardous Liquid Pipelines Accident Report database, which was established in 1970, revised in 1986, and revised again in January 2002 (when the threshold for reporting hazardous liquids pipeline accidents was reduced from 50 barrels to 5 gallons)
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From page 80... ...
Hazardous liquids pipelines accounted for about $350 million, or 50 percent, of this property damage.2 In 2001, there were a total of 44,969 transportation fatalities, none of which were attributable to liquids pipeline incidents and 7 of which were attributable to natural gas pipeline incidents. In 2002, the number of transportation fatalities increased to 45,098.
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From page 81... ...
For the same time period, the average annual number of safety incidents dropped to 63 and the number of reportable safety incidents per year per tcf dropped by 40 percent to 3.4. Thus, this downward trend in reportable incidents was accompanied by a 30 percent increase in natural gas consumption.
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From page 82... ...
occur in unpopulated areas, and third-party damage is the single largest cause of onshore incidents at 23 percent. Hazardous liquids pipeline summary incident statistics show a comparable downward trend (see Table B-4)
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From page 83... ...
are necessary for a meaningful comparison of the safety performance of individual pipeline companies. OPS did not require hazardous liquids pipeline operators to submit this type of data and did not collect complete data from natural gas pipelines.
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From page 84... ...
Total (%) Third-party damage 28 9 23 External corrosion 17 0 13 Internal corrosion 11 7 10 Natural forces 10 8 9 Miscellaneous 2 30 9 Incorrect operation 3 19 7 Unknown 7 5 6 Other failure 4 8 5 Construction/installation 6 1 5 Manufacturer 6 4 Previously damaged pipe 4 0 3 Malfunction 1 11 3 Stress corrosion cracking 2 2 Vandalism 1 1 Total 100 100 100 NOTE: These data are based on 662 incidents.
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From page 85... ...
affects pipelines constructed in the TABLE B-7 Liquids Pipeline Incidents Involving Failure at Time of Incident Incidents Barrels Released Number Percentage Total Percentage Landowner (subtotal) 25 37 37,711 44 Landowner -- farming 19 28 18,717 22 Landowner -- homeowner 6 9 18,994 22 One-call partners 18 26 19,008 22 Additional industrial/commercial activity 17 25 24,312 28 Road construction/maintenance 9 13 5,534 6 Total 69 100 86,565 100
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From page 86... ...
The changes in the reporting forms, which have been adopted recently, should enable OPS and others to better understand the causes of incidents so that efforts to improve pipeline safety will be more likely to reduce the number and severity of incidents and failures. In addition, a comprehensive, detailed, viable database on pipeline incidents and an inventory of the pipeline infrastructure can be used to establish quantifiable performance measures by which the effectiveness of the integrity management and other risk management programs may be evaluated (GAO 2002)
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From page 87... ...
2003. Hazardous Liquid Pipeline Operators Accident Summary Statistics by Year, 1/1/19866/30/2003.
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