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Significant Pipeline Incidents By Cause

This report is a sub-report of the PHMSA Significant Pipeline Incidents report. As such, it represents Significant Incidents (A) only over the time period and pipeline system specified.

The data source for this table is the PHMSA Flagged Incident File. (1)

More Pipeline Incidents and Mileage Reports are available.

National All Pipeline Systems: Significant Incident Details: 2000
Reported Cause of Incident (B) Number (C) % Fatalities Injuries Property Damage (D) (E) % of Property Damage
CORROSION
EXTERNAL CORROSION 33 11.3% 0 5 $54,476,560 21.9%
INTERNAL CORROSION 23 7.9% 12 2 $3,702,604 1.4%
UNSPECIFIED CORROSION 2 0.6% 0 0 $980,443 0.3%
Sub Total 58 20.0% 12 7 $59,159,607 23.8%
EXCAVATION DAMAGE
OPERATOR/CONTRACTOR EXCAVATION DAMAGE 6 2.0% 0 0 $1,203,959 0.4%
THIRD PARTY EXCAVATION DAMAGE 74 25.5% 7 24 $20,888,855 8.4%
Sub Total 80 27.5% 7 24 $22,092,814 8.8%
INCORRECT OPERATION
UNSPECIFIED INCORRECT OPERATION 15 5.1% 0 8 $2,808,890 1.1%
Sub Total 15 5.1% 0 8 $2,808,890 1.1%
MAT'L/WELD/EQUIP FAILURE
UNSPECIFIED PIPE BODY OR SEAM 9 3.1% 0 0 $75,766,979 30.4%
UNSPECIFIED WELD 7 2.4% 0 0 $5,425,382 2.1%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT 5 1.7% 0 0 $234,986 0.0%
UNSPECIFIED MAT'L/WELD/EQUIP FAILURE 8 2.7% 0 6 $2,067,628 0.8%
Sub Total 29 10.0% 0 6 $83,494,976 33.5%
NATURAL FORCE DAMAGE
EARTH MOVEMENT 6 2.0% 0 2 $1,785,597 0.7%
TEMPERATURE 4 1.3% 0 0 $2,032,127 0.8%
Sub Total 10 3.4% 0 2 $3,817,725 1.5%
OTHER OUTSIDE FORCE DAMAGE
FISHING OR MARITIME ACTIVITY 1 0.3% 0 0 $21,639,525 8.7%
UNSPECIFIED OUTSIDE FORCE DAMAGE 4 1.3% 1 1 $1,421,247 0.5%
Sub Total 5 1.7% 1 1 $23,060,772 9.2%
ALL OTHER CAUSES
MISCELLANEOUS CAUSE 88 30.3% 15 30 $53,485,457 21.5%
UNKNOWN CAUSE 5 1.7% 3 3 $665,489 0.2%
Sub Total 93 32.0% 18 33 $54,150,946 21.7%
Totals 290 100.0% 38 81 $248,585,734 100.0%
National, All Pipeline Systems, 2000
National Hazardous Liquid: Significant Incident Details: 2000
Reported Cause of Incident (B) Number % Fatalities Injuries Property Damage (D) (E) % of Property Damage
CORROSION
EXTERNAL CORROSION 19 14.0% 0 0 $49,672,520 25.1%
INTERNAL CORROSION 11 8.1% 0 0 $496,151 0.2%
UNSPECIFIED CORROSION 1 0.7% 0 0 $18,449 0.0%
Sub Total 31 22.9% 0 0 $50,187,121 25.3%
EXCAVATION DAMAGE
OPERATOR/CONTRACTOR EXCAVATION DAMAGE 6 4.4% 0 0 $1,203,959 0.6%
THIRD PARTY EXCAVATION DAMAGE 27 20.0% 1 3 $9,505,462 4.8%
Sub Total 33 24.4% 1 3 $10,709,421 5.4%
INCORRECT OPERATION
UNSPECIFIED INCORRECT OPERATION 9 6.6% 0 0 $2,595,407 1.3%
Sub Total 9 6.6% 0 0 $2,595,407 1.3%
MAT'L/WELD/EQUIP FAILURE
UNSPECIFIED PIPE BODY OR SEAM 9 6.6% 0 0 $75,766,979 38.3%
UNSPECIFIED WELD 7 5.1% 0 0 $5,425,382 2.7%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT 5 3.7% 0 0 $234,986 0.1%
Sub Total 21 15.5% 0 0 $81,427,348 41.1%
OTHER OUTSIDE FORCE DAMAGE
FISHING OR MARITIME ACTIVITY 1 0.7% 0 0 $21,639,525 10.9%
Sub Total 1 0.7% 0 0 $21,639,525 10.9%
ALL OTHER CAUSES
MISCELLANEOUS CAUSE 40 29.6% 0 1 $31,200,810 15.7%
Sub Total 40 29.6% 0 1 $31,200,810 15.7%
Totals 135 100.0% 1 4 $197,759,634 100.0%
National, Hazardous Liquid, 2000
National Hazardous Liquid Onshore: Significant Incident Details: 2000
Reported Cause of Incident (B) Number % Fatalities Injuries Property Damage (D) (E) % of Property Damage
CORROSION
EXTERNAL CORROSION 18 13.3% 0 0 $49,435,316 25.0%
INTERNAL CORROSION 10 7.4% 0 0 $364,371 0.1%
UNSPECIFIED CORROSION 1 0.7% 0 0 $18,449 0.0%
Sub Total 29 21.4% 0 0 $49,818,137 25.1%
EXCAVATION DAMAGE
OPERATOR/CONTRACTOR EXCAVATION DAMAGE 6 4.4% 0 0 $1,203,959 0.6%
THIRD PARTY EXCAVATION DAMAGE 26 19.2% 1 3 $9,149,656 4.6%
Sub Total 32 23.7% 1 3 $10,353,615 5.2%
INCORRECT OPERATION
UNSPECIFIED INCORRECT OPERATION 9 6.6% 0 0 $2,595,407 1.3%
Sub Total 9 6.6% 0 0 $2,595,407 1.3%
MAT'L/WELD/EQUIP FAILURE
UNSPECIFIED PIPE BODY OR SEAM 9 6.6% 0 0 $75,766,979 38.3%
UNSPECIFIED WELD 7 5.1% 0 0 $5,425,382 2.7%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT 5 3.7% 0 0 $234,986 0.1%
Sub Total 21 15.5% 0 0 $81,427,348 41.1%
ALL OTHER CAUSES
MISCELLANEOUS CAUSE 37 27.4% 0 1 $29,092,330 14.7%
Sub Total 37 27.4% 0 1 $29,092,330 14.7%
Totals 128 94.8% 1 4 $173,286,838 87.6%
National, Hazardous Liquid Onshore, 2000
National Hazardous Liquid Offshore: Significant Incident Details: 2000
Reported Cause of Incident (B) Number % Fatalities Injuries Property Damage (D) (E) % of Property Damage
CORROSION
EXTERNAL CORROSION 1 0.7% 0 0 $237,204 0.1%
INTERNAL CORROSION 1 0.7% 0 0 $131,780 0.0%
Sub Total 2 1.4% 0 0 $368,984 0.1%
EXCAVATION DAMAGE
THIRD PARTY EXCAVATION DAMAGE 1 0.7% 0 0 $355,806 0.1%
Sub Total 1 0.7% 0 0 $355,806 0.1%
OTHER OUTSIDE FORCE DAMAGE
FISHING OR MARITIME ACTIVITY 1 0.7% 0 0 $21,639,525 10.9%
Sub Total 1 0.7% 0 0 $21,639,525 10.9%
ALL OTHER CAUSES
MISCELLANEOUS CAUSE 3 2.2% 0 0 $2,108,480 1.0%
Sub Total 3 2.2% 0 0 $2,108,480 1.0%
Totals 7 5.1% 0 0 $24,472,795 12.3%
National, Hazardous Liquid Offshore, 2000
National Gas Transmission: Significant Incident Details: 2000
Reported Cause of Incident (B) Number % Fatalities Injuries Property Damage (D) (E) % of Property Damage
CORROSION
EXTERNAL CORROSION 11 20.3% 0 0 $4,494,356 21.2%
INTERNAL CORROSION 10 18.5% 12 0 $3,045,680 14.3%
Sub Total 21 38.8% 12 0 $7,540,037 35.6%
EXCAVATION DAMAGE
THIRD PARTY EXCAVATION DAMAGE 11 20.3% 3 7 $2,932,065 13.8%
Sub Total 11 20.3% 3 7 $2,932,065 13.8%
MAT'L/WELD/EQUIP FAILURE
UNSPECIFIED MAT'L/WELD/EQUIP FAILURE 3 5.5% 0 0 $480,997 2.2%
Sub Total 3 5.5% 0 0 $480,997 2.2%
NATURAL FORCE DAMAGE
EARTH MOVEMENT 1 1.8% 0 0 $274,102 1.3%
TEMPERATURE 2 3.7% 0 0 $516,657 2.4%
Sub Total 3 5.5% 0 0 $790,760 3.7%
ALL OTHER CAUSES
MISCELLANEOUS CAUSE 16 29.6% 0 9 $9,422,890 44.5%
Sub Total 16 29.6% 0 9 $9,422,890 44.5%
Totals 54 100.0% 15 16 $21,166,751 100.0%
National, Gas Transmission, 2000
National Gas Transmission Onshore: Significant Incident Details: 2000
Reported Cause of Incident (B) Number % Fatalities Injuries Property Damage (D) (E) % of Property Damage
CORROSION
EXTERNAL CORROSION 10 18.5% 0 0 $4,337,538 20.4%
INTERNAL CORROSION 3 5.5% 12 0 $1,815,000 8.5%
Sub Total 13 24.0% 12 0 $6,152,539 29.0%
EXCAVATION DAMAGE
THIRD PARTY EXCAVATION DAMAGE 10 18.5% 3 7 $2,141,385 10.1%
Sub Total 10 18.5% 3 7 $2,141,385 10.1%
MAT'L/WELD/EQUIP FAILURE
UNSPECIFIED MAT'L/WELD/EQUIP FAILURE 3 5.5% 0 0 $480,997 2.2%
Sub Total 3 5.5% 0 0 $480,997 2.2%
NATURAL FORCE DAMAGE
EARTH MOVEMENT 1 1.8% 0 0 $274,102 1.3%
TEMPERATURE 2 3.7% 0 0 $516,657 2.4%
Sub Total 3 5.5% 0 0 $790,760 3.7%
ALL OTHER CAUSES
MISCELLANEOUS CAUSE 16 29.6% 0 9 $9,422,890 44.5%
Sub Total 16 29.6% 0 9 $9,422,890 44.5%
Totals 45 83.3% 15 16 $18,988,572 89.7%
National, Gas Transmission Onshore, 2000
National Gas Transmission Offshore: Significant Incident Details: 2000
Reported Cause of Incident (B) Number % Fatalities Injuries Property Damage (D) (E) % of Property Damage
CORROSION
EXTERNAL CORROSION 1 1.8% 0 0 $156,818 0.7%
INTERNAL CORROSION 7 12.9% 0 0 $1,230,680 5.8%
Sub Total 8 14.8% 0 0 $1,387,498 6.5%
EXCAVATION DAMAGE
THIRD PARTY EXCAVATION DAMAGE 1 1.8% 0 0 $790,680 3.7%
Sub Total 1 1.8% 0 0 $790,680 3.7%
Totals 9 16.6% 0 0 $2,178,178 10.2%
National, Gas Transmission Offshore, 2000
National Gas Gathering: Significant Incident Details: 2000
Reported Cause of Incident (B) Number % Fatalities Injuries Property Damage (D) (E) % of Property Damage
CORROSION
INTERNAL CORROSION 2 66.6% 0 2 $160,771 14.3%
UNSPECIFIED CORROSION 1 33.3% 0 0 $961,994 85.6%
Sub Total 3100.0% 0 2 $1,122,765100.0%
Totals 3 100.0% 0 2 $1,122,765 100.0%
National, Gas Gathering, 2000
National Gas Distribution: Significant Incident Details: 2000
Reported Cause of Incident (B) Number (C) % Fatalities Injuries Property Damage (D) (E) % of Property Damage
CORROSION
EXTERNAL CORROSION 3 3.0% 0 5 $309,683 1.0%
Sub Total 3 3.0% 0 5 $309,683 1.0%
EXCAVATION DAMAGE
THIRD PARTY EXCAVATION DAMAGE 36 36.7% 3 14 $8,451,326 29.6%
Sub Total 36 36.7% 3 14 $8,451,326 29.6%
INCORRECT OPERATION
UNSPECIFIED INCORRECT OPERATION 6 6.1% 0 8 $213,483 0.7%
Sub Total 6 6.1% 0 8 $213,483 0.7%
MAT'L/WELD/EQUIP FAILURE
UNSPECIFIED MAT'L/WELD/EQUIP FAILURE 5 5.1% 0 6 $1,586,631 5.5%
Sub Total 5 5.1% 0 6 $1,586,631 5.5%
NATURAL FORCE DAMAGE
EARTH MOVEMENT 5 5.1% 0 2 $1,511,495 5.3%
TEMPERATURE 2 2.0% 0 0 $1,515,470 5.3%
Sub Total 7 7.1% 0 2 $3,026,965 10.6%
OTHER OUTSIDE FORCE DAMAGE
UNSPECIFIED OUTSIDE FORCE DAMAGE 4 4.0% 1 1 $1,421,247 4.9%
Sub Total 4 4.0% 1 1 $1,421,247 4.9%
ALL OTHER CAUSES
MISCELLANEOUS CAUSE 32 32.6% 15 20 $12,861,756 45.0%
UNKNOWN CAUSE 5 5.1% 3 3 $665,489 2.3%
Sub Total 37 37.7% 18 23 $13,527,245 47.4%
Totals 98 100.0% 22 59 $28,536,583 100.0%
National, Gas Distribution, 2000

Notes

  1. Significant Incidents are those incidents reported by pipeline operators when any of the following conditions are met: 1) Fatality or injury requiring in-patient hospitalization. 2) $50,000 or more in total costs, measured in 1984 dollars. 3) Highly volatile liquid releases of 5 barrels or more or other liquid releases of 50 barrels or more. 4) Liquid releases resulting in an unintentional fire or explosion. Serious incidents, a subset of Significant Incidents, are incidents which involve a fatality or injury requiring in-patient hospitalization.
  2. PHMSA has gathered increasingly targeted incident cause data over time. As such, the available reportable categories of cause (eg: Internal/External Corrosion vs Corrosion in general) have increased over time. This report spans time periods over which the reportable cause categories have changed. The cause categories in this report should be taken as general and not specific for years prior to 2002 for Liquid and Gas Transmission, and prior to 2004 for Gas Distribution.
  3. Gas Distribution incidents where fire/explosion was the primary cause of failure, such as a house fire that subsequently resulted in - but was not caused by - a distribution line failure are excluded from 2004 onward. This exclusion has not been applied in years prior to 2004 due to difficulty in identifying these types of events with the older report formats.
  4. The costs for incidents in 2013 and prior are presented in 2013 dollars. Cost of Gas lost is indexed via the Energy Information Administration, Natural Gas City Gate Prices. All other costs are adjusted via the Bureau of Economic Analysis, Government Printing Office inflation values.
  5. For years 2002 and later, property damage is estimated as the sum of all public and private costs reported in the 30-day incident report. For years prior to 2002, accident report forms did not include a breakdown of public and private costs so property damage for these years is the reported total property damage field in the report.

Sources

  1. PHMSA Flagged Incidents File - Apr 01, 2014. Note: Incidents occurring up to 30 days prior the Incident File source date may not appear in these reports due to the 30-day reporting period allowed by PHMSA regulation.

See Pipeline Incidents and Mileage Reports for more pipeline safety reports.

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