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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 Reports are available.

National All Pipeline Systems: Significant Incident Details: 2005
Reported Cause of Incident (B) Number (C) % Fatalities Injuries Property Damage (D) (E) % of Property Damage
CORROSION
EXTERNAL CORROSION 24 7.1% 0 1 $9,173,247 0.6%
INTERNAL CORROSION 27 8.0% 0 1 $10,221,772 0.7%
Sub Total 51 15.2% 0 2 $19,395,020 1.3%
EXCAVATION DAMAGE
OPERATOR/CONTRACTOR EXCAVATION DAMAGE 7 2.1% 0 1 $1,708,921 0.1%
THIRD PARTY EXCAVATION DAMAGE 38 11.3% 5 9 $15,520,376 1.0%
Sub Total 45 13.4% 5 10 $17,229,297 1.2%
INCORRECT OPERATION
UNSPECIFIED INCORRECT OPERATION 20 5.9% 1 7 $9,607,200 0.6%
Sub Total 20 5.9% 1 7 $9,607,200 0.6%
MAT'L/WELD/EQUIP FAILURE
ENVIRONMENTAL CRACKING-RELATED 2 0.6% 0 0 $101,642,275 7.1%
BODY OF PIPE 14 4.1% 0 1 $7,489,965 0.5%
PIPE SEAM 10 2.9% 0 0 $10,112,082 0.7%
BUTT WELD 4 1.2% 0 0 $1,611,389 0.1%
FILLET WELD 1 0.3% 0 0 $18,281,756 1.2%
JOINT/FITTING/COMPONENT 20 5.9% 0 0 $5,154,561 0.3%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT 12 3.5% 1 0 $1,901,751 0.1%
THREADED CONNECTION/COUPLING FAILURE 6 1.8% 0 0 $286,660 0.0%
NON-THREADED CONNECTION FAILURE 8 2.4% 0 1 $981,613 0.0%
UNSPECIFIED EQUIPMENT FAILURE 1 0.3% 0 0 $174 0.0%
Sub Total 78 23.3% 1 2 $147,462,230 10.3%
NATURAL FORCE DAMAGE
EARTH MOVEMENT 12 3.5% 0 2 $179,726,015 12.6%
HEAVY RAINS/FLOODS 44 13.1% 0 0 $737,750,517 51.8%
LIGHTNING 4 1.2% 0 0 $2,117,704 0.1%
TEMPERATURE 4 1.2% 0 0 $6,312,222 0.4%
HIGH WINDS 14 4.1% 1 0 $245,152,385 17.2%
Sub Total 78 23.3% 1 2 $1,171,058,845 82.3%
OTHER OUTSIDE FORCE DAMAGE
FIRE/EXPLOSION AS PRIMARY CAUSE 1 0.3% 0 0 $145,072 0.0%
VEHICLE NOT ENGAGED IN EXCAVATION 26 7.7% 1 9 $20,500,971 1.4%
PREVIOUS MECHANICAL DAMAGE 4 1.2% 0 0 $9,905,686 0.7%
INTENTIONAL DAMAGE 2 0.6% 3 3 $123,536 0.0%
Sub Total 33 9.8% 4 12 $30,675,267 2.1%
ALL OTHER CAUSES
MISCELLANEOUS CAUSE 21 6.2% 0 3 $24,192,512 1.7%
UNKNOWN CAUSE 8 2.4% 4 9 $2,142,731 0.1%
Sub Total 29 8.6% 4 12 $26,335,244 1.8%
Totals 334 100.0% 16 47 $1,421,763,106 100.0%
National, All Pipeline Systems, 2005
National Hazardous Liquid: Significant Incident Details: 2005
Reported Cause of Incident (B) Number % Fatalities Injuries Property Damage (D) (E) % of Property Damage
CORROSION
EXTERNAL CORROSION 13 10.2% 0 1 $7,008,034 1.9%
INTERNAL CORROSION 14 11.0% 0 0 $1,175,187 0.3%
Sub Total 27 21.2% 0 1 $8,183,222 2.3%
EXCAVATION DAMAGE
OPERATOR/CONTRACTOR EXCAVATION DAMAGE 3 2.3% 0 0 $1,283,829 0.3%
THIRD PARTY EXCAVATION DAMAGE 9 7.0% 0 1 $3,804,156 1.0%
Sub Total 12 9.4% 0 1 $5,087,986 1.4%
INCORRECT OPERATION
UNSPECIFIED INCORRECT OPERATION 9 7.0% 1 0 $7,781,446 2.2%
Sub Total 9 7.0% 1 0 $7,781,446 2.2%
MAT'L/WELD/EQUIP FAILURE
ENVIRONMENTAL CRACKING-RELATED 1 0.7% 0 0 $420,200 0.1%
BODY OF PIPE 7 5.5% 0 0 $4,799,342 1.3%
PIPE SEAM 10 7.8% 0 0 $10,112,082 2.8%
BUTT WELD 2 1.5% 0 0 $95,114 0.0%
FILLET WELD 1 0.7% 0 0 $18,281,756 5.1%
JOINT/FITTING/COMPONENT 11 8.6% 0 0 $1,967,206 0.5%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT 3 2.3% 1 0 $32,139 0.0%
THREADED CONNECTION/COUPLING FAILURE 5 3.9% 0 0 $224,437 0.0%
NON-THREADED CONNECTION FAILURE 7 5.5% 0 0 $630,609 0.1%
UNSPECIFIED EQUIPMENT FAILURE 1 0.7% 0 0 $174 0.0%
Sub Total 48 37.8% 1 0 $36,563,063 10.3%
NATURAL FORCE DAMAGE
EARTH MOVEMENT 2 1.5% 0 0 $25,725,221 7.2%
HEAVY RAINS/FLOODS 4 3.1% 0 0 $44,626,945 12.5%
LIGHTNING 3 2.3% 0 0 $1,649,062 0.4%
TEMPERATURE 2 1.5% 0 0 $5,962,039 1.6%
HIGH WINDS 6 4.7% 0 0 $207,533,572 58.5%
Sub Total 17 13.3% 0 0 $285,496,841 80.5%
OTHER OUTSIDE FORCE DAMAGE
VEHICLE NOT ENGAGED IN EXCAVATION 3 2.3% 0 0 $2,666,886 0.7%
PREVIOUS MECHANICAL DAMAGE 3 2.3% 0 0 $8,095,452 2.2%
Sub Total 6 4.7% 0 0 $10,762,339 3.0%
ALL OTHER CAUSES
MISCELLANEOUS CAUSE 8 6.3% 0 0 $539,402 0.1%
Sub Total 8 6.3% 0 0 $539,402 0.1%
Totals 127 100.0% 2 2 $354,414,301 100.0%
National, Hazardous Liquid, 2005
National Hazardous Liquid Onshore: Significant Incident Details: 2005
Reported Cause of Incident (B) Number % Fatalities Injuries Property Damage (D) (E) % of Property Damage
CORROSION
EXTERNAL CORROSION 13 10.2% 0 1 $7,008,034 1.9%
INTERNAL CORROSION 14 11.0% 0 0 $1,175,187 0.3%
Sub Total 27 21.2% 0 1 $8,183,222 2.3%
EXCAVATION DAMAGE
OPERATOR/CONTRACTOR EXCAVATION DAMAGE 3 2.3% 0 0 $1,283,829 0.3%
THIRD PARTY EXCAVATION DAMAGE 9 7.0% 0 1 $3,804,156 1.0%
Sub Total 12 9.4% 0 1 $5,087,986 1.4%
INCORRECT OPERATION
UNSPECIFIED INCORRECT OPERATION 9 7.0% 1 0 $7,781,446 2.2%
Sub Total 9 7.0% 1 0 $7,781,446 2.2%
MAT'L/WELD/EQUIP FAILURE
ENVIRONMENTAL CRACKING-RELATED 1 0.7% 0 0 $420,200 0.1%
BODY OF PIPE 7 5.5% 0 0 $4,799,342 1.3%
PIPE SEAM 10 7.8% 0 0 $10,112,082 2.8%
BUTT WELD 2 1.5% 0 0 $95,114 0.0%
FILLET WELD 1 0.7% 0 0 $18,281,756 5.1%
JOINT/FITTING/COMPONENT 10 7.8% 0 0 $1,949,666 0.5%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT 3 2.3% 1 0 $32,139 0.0%
THREADED CONNECTION/COUPLING FAILURE 5 3.9% 0 0 $224,437 0.0%
NON-THREADED CONNECTION FAILURE 7 5.5% 0 0 $630,609 0.1%
UNSPECIFIED EQUIPMENT FAILURE 1 0.7% 0 0 $174 0.0%
Sub Total 47 37.0% 1 0 $36,545,524 10.3%
NATURAL FORCE DAMAGE
EARTH MOVEMENT 2 1.5% 0 0 $25,725,221 7.2%
HEAVY RAINS/FLOODS 3 2.3% 0 0 $43,803,758 12.3%
LIGHTNING 3 2.3% 0 0 $1,649,062 0.4%
TEMPERATURE 2 1.5% 0 0 $5,962,039 1.6%
HIGH WINDS 2 1.5% 0 0 $176,378,292 49.7%
Sub Total 12 9.4% 0 0 $253,518,374 71.5%
OTHER OUTSIDE FORCE DAMAGE
VEHICLE NOT ENGAGED IN EXCAVATION 2 1.5% 0 0 $328,288 0.0%
PREVIOUS MECHANICAL DAMAGE 3 2.3% 0 0 $8,095,452 2.2%
Sub Total 5 3.9% 0 0 $8,423,741 2.3%
ALL OTHER CAUSES
MISCELLANEOUS CAUSE 8 6.3% 0 0 $539,402 0.1%
Sub Total 8 6.3% 0 0 $539,402 0.1%
Totals 120 94.4% 2 2 $320,079,697 90.3%
National, Hazardous Liquid Onshore, 2005
National Hazardous Liquid Offshore: Significant Incident Details: 2005
Reported Cause of Incident (B) Number % Fatalities Injuries Property Damage (D) (E) % of Property Damage
MAT'L/WELD/EQUIP FAILURE
JOINT/FITTING/COMPONENT 1 0.7% 0 0 $17,539 0.0%
Sub Total 1 0.7% 0 0 $17,539 0.0%
NATURAL FORCE DAMAGE
HEAVY RAINS/FLOODS 1 0.7% 0 0 $823,186 0.2%
HIGH WINDS 4 3.1% 0 0 $31,155,280 8.7%
Sub Total 5 3.9% 0 0 $31,978,466 9.0%
OTHER OUTSIDE FORCE DAMAGE
VEHICLE NOT ENGAGED IN EXCAVATION 1 0.7% 0 0 $2,338,598 0.6%
Sub Total 1 0.7% 0 0 $2,338,598 0.6%
Totals 7 5.5% 0 0 $34,334,604 9.6%
National, Hazardous Liquid Offshore, 2005
National Gas Transmission: Significant Incident Details: 2005
Reported Cause of Incident (B) Number % Fatalities Injuries Property Damage (D) (E) % of Property Damage
CORROSION
EXTERNAL CORROSION 8 7.2% 0 0 $1,749,309 0.5%
INTERNAL CORROSION 6 5.4% 0 0 $4,632,308 1.4%
Sub Total 14 12.7% 0 0 $6,381,617 1.9%
EXCAVATION DAMAGE
OPERATOR/CONTRACTOR EXCAVATION DAMAGE 2 1.8% 0 0 $181,790 0.0%
THIRD PARTY EXCAVATION DAMAGE 8 7.2% 0 1 $1,564,832 0.4%
Sub Total 10 9.0% 0 1 $1,746,622 0.5%
INCORRECT OPERATION
UNSPECIFIED INCORRECT OPERATION 4 3.6% 0 1 $742,573 0.2%
Sub Total 4 3.6% 0 1 $742,573 0.2%
MAT'L/WELD/EQUIP FAILURE
ENVIRONMENTAL CRACKING-RELATED 1 0.9% 0 0 $101,222,075 30.6%
BODY OF PIPE 5 4.5% 0 0 $2,196,703 0.6%
BUTT WELD 2 1.8% 0 0 $1,516,274 0.4%
JOINT/FITTING/COMPONENT 5 4.5% 0 0 $2,039,678 0.6%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT 6 5.4% 0 0 $1,196,611 0.3%
THREADED CONNECTION/COUPLING FAILURE 1 0.9% 0 0 $62,222 0.0%
NON-THREADED CONNECTION FAILURE 1 0.9% 0 1 $351,003 0.1%
Sub Total 21 19.0% 0 1 $108,584,569 32.8%
NATURAL FORCE DAMAGE
EARTH MOVEMENT 4 3.6% 0 0 $3,313,662 1.0%
HEAVY RAINS/FLOODS 34 30.9% 0 0 $146,497,973 44.3%
HIGH WINDS 5 4.5% 0 0 $28,747,755 8.7%
Sub Total 43 39.0% 0 0 $178,559,392 54.0%
OTHER OUTSIDE FORCE DAMAGE
FIRE/EXPLOSION AS PRIMARY CAUSE 1 0.9% 0 0 $145,072 0.0%
VEHICLE NOT ENGAGED IN EXCAVATION 7 6.3% 0 1 $10,413,688 3.1%
PREVIOUS MECHANICAL DAMAGE 1 0.9% 0 0 $1,810,234 0.5%
Sub Total 9 8.1% 0 1 $12,368,995 3.7%
ALL OTHER CAUSES
MISCELLANEOUS CAUSE 9 8.1% 0 1 $21,959,370 6.6%
Sub Total 9 8.1% 0 1 $21,959,370 6.6%
Totals 110 100.0% 0 5 $330,343,141 100.0%
National, Gas Transmission, 2005
National Gas Transmission Onshore: Significant Incident Details: 2005
Reported Cause of Incident (B) Number % Fatalities Injuries Property Damage (D) (E) % of Property Damage
CORROSION
EXTERNAL CORROSION 8 7.2% 0 0 $1,749,309 0.5%
INTERNAL CORROSION 2 1.8% 0 0 $216,350 0.0%
Sub Total 10 9.0% 0 0 $1,965,659 0.6%
EXCAVATION DAMAGE
OPERATOR/CONTRACTOR EXCAVATION DAMAGE 2 1.8% 0 0 $181,790 0.0%
THIRD PARTY EXCAVATION DAMAGE 8 7.2% 0 1 $1,564,832 0.4%
Sub Total 10 9.0% 0 1 $1,746,622 0.5%
INCORRECT OPERATION
UNSPECIFIED INCORRECT OPERATION 3 2.7% 0 1 $294,343 0.0%
Sub Total 3 2.7% 0 1 $294,343 0.0%
MAT'L/WELD/EQUIP FAILURE
ENVIRONMENTAL CRACKING-RELATED 1 0.9% 0 0 $101,222,075 30.6%
BODY OF PIPE 4 3.6% 0 0 $2,079,773 0.6%
BUTT WELD 2 1.8% 0 0 $1,516,274 0.4%
JOINT/FITTING/COMPONENT 2 1.8% 0 0 $233,801 0.0%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT 6 5.4% 0 0 $1,196,611 0.3%
THREADED CONNECTION/COUPLING FAILURE 1 0.9% 0 0 $62,222 0.0%
NON-THREADED CONNECTION FAILURE 1 0.9% 0 1 $351,003 0.1%
Sub Total 17 15.4% 0 1 $106,661,763 32.2%
NATURAL FORCE DAMAGE
EARTH MOVEMENT 2 1.8% 0 0 $417,192 0.1%
HEAVY RAINS/FLOODS 7 6.3% 0 0 $79,432,606 24.0%
HIGH WINDS 2 1.8% 0 0 $169,021 0.0%
Sub Total 11 10.0% 0 0 $80,018,821 24.2%
OTHER OUTSIDE FORCE DAMAGE
FIRE/EXPLOSION AS PRIMARY CAUSE 1 0.9% 0 0 $145,072 0.0%
VEHICLE NOT ENGAGED IN EXCAVATION 3 2.7% 0 1 $967,117 0.2%
Sub Total 4 3.6% 0 1 $1,112,190 0.3%
ALL OTHER CAUSES
MISCELLANEOUS CAUSE 8 7.2% 0 1 $21,783,975 6.5%
Sub Total 8 7.2% 0 1 $21,783,975 6.5%
Totals 63 57.2% 0 5 $213,583,375 64.6%
National, Gas Transmission Onshore, 2005
National Gas Transmission Offshore: Significant Incident Details: 2005
Reported Cause of Incident (B) Number % Fatalities Injuries Property Damage (D) (E) % of Property Damage
CORROSION
INTERNAL CORROSION 4 3.6% 0 0 $4,415,957 1.3%
Sub Total 4 3.6% 0 0 $4,415,957 1.3%
INCORRECT OPERATION
UNSPECIFIED INCORRECT OPERATION 1 0.9% 0 0 $448,229 0.1%
Sub Total 1 0.9% 0 0 $448,229 0.1%
MAT'L/WELD/EQUIP FAILURE
BODY OF PIPE 1 0.9% 0 0 $116,929 0.0%
JOINT/FITTING/COMPONENT 3 2.7% 0 0 $1,805,876 0.5%
Sub Total 4 3.6% 0 0 $1,922,806 0.5%
NATURAL FORCE DAMAGE
EARTH MOVEMENT 2 1.8% 0 0 $2,896,470 0.8%
HEAVY RAINS/FLOODS 27 24.5% 0 0 $67,065,366 20.3%
HIGH WINDS 3 2.7% 0 0 $28,578,733 8.6%
Sub Total 32 29.0% 0 0 $98,540,571 29.8%
OTHER OUTSIDE FORCE DAMAGE
VEHICLE NOT ENGAGED IN EXCAVATION 4 3.6% 0 0 $9,446,570 2.8%
PREVIOUS MECHANICAL DAMAGE 1 0.9% 0 0 $1,810,234 0.5%
Sub Total 5 4.5% 0 0 $11,256,805 3.4%
ALL OTHER CAUSES
MISCELLANEOUS CAUSE 1 0.9% 0 0 $175,394 0.0%
Sub Total 1 0.9% 0 0 $175,394 0.0%
Totals 47 42.7% 0 0 $116,759,765 35.3%
National, Gas Transmission Offshore, 2005
National Gas Gathering: Significant Incident Details: 2005
Reported Cause of Incident (B) Number % Fatalities Injuries Property Damage (D) (E) % of Property Damage
CORROSION
EXTERNAL CORROSION 2 11.1% 0 0 $305,973 0.1%
INTERNAL CORROSION 6 33.3% 0 0 $3,940,654 2.3%
Sub Total 8 44.4% 0 0 $4,246,627 2.5%
INCORRECT OPERATION
UNSPECIFIED INCORRECT OPERATION 1 5.5% 0 2 $0 0.0%
Sub Total 1 5.5% 0 2 $0 0.0%
MAT'L/WELD/EQUIP FAILURE
JOINT/FITTING/COMPONENT 1 5.5% 0 0 $209,867 0.1%
Sub Total 1 5.5% 0 0 $209,867 0.1%
NATURAL FORCE DAMAGE
EARTH MOVEMENT 3 16.6% 0 0 $149,975,359 90.3%
HEAVY RAINS/FLOODS 2 11.1% 0 0 $369,018 0.2%
HIGH WINDS 2 11.1% 0 0 $8,871,057 5.3%
Sub Total 7 38.8% 0 0 $159,215,435 95.8%
OTHER OUTSIDE FORCE DAMAGE
VEHICLE NOT ENGAGED IN EXCAVATION 1 5.5% 0 0 $2,402,201 1.4%
Sub Total 1 5.5% 0 0 $2,402,201 1.4%
Totals 18 100.0% 0 2 $166,074,132 100.0%
National, Gas Gathering, 2005
National Gas Distribution: Significant Incident Details: 2005
Reported Cause of Incident (B) Number (C) % Fatalities Injuries Property Damage (D) (E) % of Property Damage
CORROSION
EXTERNAL CORROSION 1 1.2% 0 0 $109,930 0.0%
INTERNAL CORROSION 1 1.2% 0 1 $473,622 0.0%
Sub Total 2 2.5% 0 1 $583,552 0.1%
EXCAVATION DAMAGE
OPERATOR/CONTRACTOR EXCAVATION DAMAGE 2 2.5% 0 1 $243,301 0.0%
THIRD PARTY EXCAVATION DAMAGE 21 26.5% 5 7 $10,151,387 1.7%
Sub Total 23 29.1% 5 8 $10,394,689 1.8%
INCORRECT OPERATION
UNSPECIFIED INCORRECT OPERATION 6 7.5% 0 4 $1,083,180 0.1%
Sub Total 6 7.5% 0 4 $1,083,180 0.1%
MAT'L/WELD/EQUIP FAILURE
BODY OF PIPE 2 2.5% 0 1 $493,919 0.0%
JOINT/FITTING/COMPONENT 3 3.8% 0 0 $937,809 0.1%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT 3 3.8% 0 0 $673,000 0.1%
Sub Total 8 10.1% 0 1 $2,104,729 0.3%
NATURAL FORCE DAMAGE
EARTH MOVEMENT 3 3.8% 0 2 $711,771 0.1%
HEAVY RAINS/FLOODS 4 5.0% 0 0 $546,256,579 95.6%
LIGHTNING 1 1.2% 0 0 $468,641 0.0%
TEMPERATURE 2 2.5% 0 0 $350,183 0.0%
HIGH WINDS 1 1.2% 1 0 $0 0.0%
Sub Total 11 13.9% 1 2 $547,787,176 95.9%
OTHER OUTSIDE FORCE DAMAGE
VEHICLE NOT ENGAGED IN EXCAVATION 15 18.9% 1 8 $5,018,194 0.8%
INTENTIONAL DAMAGE 2 2.5% 3 3 $123,536 0.0%
Sub Total 17 21.5% 4 11 $5,141,731 0.9%
ALL OTHER CAUSES
MISCELLANEOUS CAUSE 4 5.0% 0 2 $1,693,740 0.3%
UNKNOWN CAUSE 8 10.1% 4 9 $2,142,731 0.3%
Sub Total 12 15.1% 4 11 $3,836,471 0.6%
Totals 79 100.0% 14 38 $570,931,531 100.0%
National, Gas Distribution, 2005

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 - Sept 3, 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 Reports for more pipeline safety reports.

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