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All Reported Pipeline Incidents By Cause

This report is a sub-report of the PHMSA All Reported Pipeline Incidents report. As such, it represents All Reported Incidents over the time period and pipeline system specified.

It should be noted that hazardous liquid incidents within the All Reported Incidents data set include many smaller spills of lesser significance for which operators were not required to report second level, or sub-causes. As a result, the causes for these incidents can only be categorized within the appropriate "Unspecified..." sub-cause. These smaller spills with no specific sub-cause are not included in the Serious or Significant Incidents data sets by definition. The various "Unspecified..." sub-causes used below also include those older incidents which could not be mapped more specifically due to legacy form issues associated with each type of pipeline system.

It should also be noted that, due to the differing nature of the smaller hazardous liquid incidents being reported in 2002 and beyond, the cause breakdowns for the aggregated incidents will change for this time period as well.

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

More Pipeline Incidents Reports are available.

National All Pipeline Systems: All Reported Incident Details: 2012
Reported Cause of Incident (A) Number % Fatalities Injuries Property Damage as Reported (B) (C) % of Property Damage
CORROSION
EXTERNAL CORROSION 47 8.2% 0 2 $23,903,853 11.1%
INTERNAL CORROSION 85 14.9% 0 0 $33,678,786 15.7%
Sub Total 132 23.1% 0 2 $57,582,639 26.9%
EXCAVATION DAMAGE
OPERATOR/CONTRACTOR EXCAVATION DAMAGE 6 1.0% 0 0 $785,443 0.3%
THIRD PARTY EXCAVATION DAMAGE 32 5.6% 1 7 $13,533,252 6.3%
PREVIOUS DAMAGE DUE TO EXCAVATION 5 0.8% 0 4 $19,878,394 9.3%
Sub Total 43 7.5% 1 11 $34,197,089 16.0%
INCORRECT OPERATION
DAMAGE BY OPERATOR OR OPERATOR'S CONTRACTOR 7 1.2% 0 17 $1,546,661 0.7%
OVERFILL/OVERFLOW OF TANK/VESSEL/SUMP 9 1.5% 0 0 $350,150 0.1%
INCORRECT VALVE POSITION 16 2.8% 0 0 $3,386,358 1.5%
PIPELINE/EQUIPMENT OVERPRESSURED 5 0.8% 0 0 $3,959,033 1.8%
INCORRECT INSTALLATION 10 1.7% 0 0 $804,822 0.3%
INCORRECT EQUIPMENT 2 0.3% 0 0 $5,823 0.0%
OTHER INCORRECT OPERATION 15 2.6% 0 1 $2,547,717 1.1%
Sub Total 64 11.2% 0 18 $12,600,564 5.9%
MAT'L/WELD/EQUIP FAILURE
CONSTRUCTION, INSTALLATION OR FABRICATION-RELATED 21 3.6% 0 0 $3,959,582 1.8%
MANUFACTURING-RELATED 14 2.4% 0 0 $34,282,567 16.0%
ENVIRONMENTAL CRACKING-RELATED 3 0.5% 0 0 $1,320,484 0.6%
BODY OF PIPE 1 0.1% 0 0 $72,000 0.0%
BUTT WELD 1 0.1% 0 0 $53,600 0.0%
FUSION JOINT 1 0.1% 0 1 $72,027 0.0%
OTHER PIPE/WELD/JOINT FAILURE 1 0.1% 0 1 $24,520 0.0%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT 38 6.6% 0 1 $1,690,611 0.7%
VALVE 3 0.5% 0 0 $421,910 0.2%
PUMP/COMPRESSOR-RELATED EQUIPMENT 54 9.4% 0 1 $3,213,888 1.5%
THREADED CONNECTION/COUPLING FAILURE 18 3.1% 0 0 $2,309,157 1.0%
NON-THREADED CONNECTION FAILURE 33 5.7% 0 0 $7,533,948 3.5%
DEFECTIVE OR LOOSE TUBING/FITTING 7 1.2% 0 0 $655,789 0.3%
FAILURE OF EQUIPMENT BODY 6 1.0% 0 0 $54,535 0.0%
OTHER EQUIPMENT FAILURE 27 4.7% 0 0 $4,458,594 2.0%
Sub Total 228 40.0% 0 4 $60,123,212 28.1%
NATURAL FORCE DAMAGE
EARTH MOVEMENT 4 0.7% 0 0 $2,158,251 1.0%
HEAVY RAINS/FLOODS 5 0.8% 0 0 $1,110,138 0.5%
LIGHTNING 3 0.5% 0 1 $1,306,195 0.6%
TEMPERATURE 7 1.2% 0 0 $379,405 0.1%
HIGH WINDS 2 0.3% 0 0 $65,500 0.0%
OTHER NATURAL FORCE DAMAGE 4 0.7% 1 2 $1,608,480 0.7%
Sub Total 25 4.3% 1 3 $6,627,969 3.1%
OTHER OUTSIDE FORCE DAMAGE
FIRE/EXPLOSION AS PRIMARY CAUSE 10 1.7% 2 3 $1,440,296 0.6%
VEHICLE NOT ENGAGED IN EXCAVATION 20 3.5% 6 9 $4,380,328 2.0%
MARITIME EQUIPMENT OR VESSEL ADRIFT 1 0.1% 0 0 $96,700 0.0%
FISHING OR MARITIME ACTIVITY 1 0.1% 0 0 $28,475 0.0%
ELECTRICAL ARCING FROM OTHER EQUIPMENT/FACILITY 6 1.0% 0 0 $495,786 0.2%
PREVIOUS MECHANICAL DAMAGE 1 0.1% 0 0 $605,348 0.2%
INTENTIONAL DAMAGE 3 0.5% 1 2 $199,944 0.0%
OTHER OUTSIDE FORCE DAMAGE 8 1.4% 0 1 $27,175,628 12.7%
Sub Total 50 8.7% 9 15 $34,422,505 16.1%
ALL OTHER CAUSES
MISCELLANEOUS CAUSE 20 3.5% 0 0 $6,534,283 3.0%
UNKNOWN CAUSE 8 1.4% 1 5 $1,481,378 0.6%
Sub Total 28 4.9% 1 5 $8,015,661 3.7%
Totals 570 100.0% 12 58 $213,569,639 100.0%
National, All Pipeline Systems, 2012
National Hazardous Liquid: All Reported Incident Details: 2012
Reported Cause of Incident (A) Number % Fatalities Injuries Property Damage as Reported (B) (C) % of Property Damage
CORROSION
EXTERNAL CORROSION 32 8.7% 0 0 $21,251,714 15.8%
INTERNAL CORROSION 66 18.1% 0 0 $26,706,404 19.9%
Sub Total 98 26.9% 0 0 $47,958,118 35.7%
EXCAVATION DAMAGE
OPERATOR/CONTRACTOR EXCAVATION DAMAGE 2 0.5% 0 0 $53,750 0.0%
THIRD PARTY EXCAVATION DAMAGE 7 1.9% 0 0 $3,665,602 2.7%
PREVIOUS DAMAGE DUE TO EXCAVATION 2 0.5% 0 0 $19,115,394 14.2%
Sub Total 11 3.0% 0 0 $22,834,746 17.0%
INCORRECT OPERATION
DAMAGE BY OPERATOR OR OPERATOR'S CONTRACTOR 4 1.1% 0 0 $212,883 0.1%
OVERFILL/OVERFLOW OF TANK/VESSEL/SUMP 9 2.4% 0 0 $350,150 0.2%
INCORRECT VALVE POSITION 12 3.3% 0 0 $303,027 0.2%
PIPELINE/EQUIPMENT OVERPRESSURED 5 1.3% 0 0 $3,959,033 2.9%
INCORRECT INSTALLATION 10 2.7% 0 0 $804,822 0.6%
INCORRECT EQUIPMENT 2 0.5% 0 0 $5,823 0.0%
OTHER INCORRECT OPERATION 10 2.7% 0 0 $1,675,475 1.2%
Sub Total 52 14.2% 0 0 $7,311,213 5.4%
MAT'L/WELD/EQUIP FAILURE
CONSTRUCTION, INSTALLATION OR FABRICATION-RELATED 14 3.8% 0 0 $1,687,207 1.2%
MANUFACTURING-RELATED 10 2.7% 0 0 $32,208,538 24.0%
ENVIRONMENTAL CRACKING-RELATED 2 0.5% 0 0 $1,216,518 0.9%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT 17 4.6% 0 0 $630,192 0.4%
PUMP/COMPRESSOR-RELATED EQUIPMENT 51 14.0% 0 0 $2,848,541 2.1%
THREADED CONNECTION/COUPLING FAILURE 13 3.5% 0 0 $505,437 0.3%
NON-THREADED CONNECTION FAILURE 28 7.6% 0 0 $5,932,054 4.4%
DEFECTIVE OR LOOSE TUBING/FITTING 6 1.6% 0 0 $612,220 0.4%
FAILURE OF EQUIPMENT BODY 6 1.6% 0 0 $54,535 0.0%
OTHER EQUIPMENT FAILURE 24 6.5% 0 0 $1,876,701 1.4%
Sub Total 171 46.9% 0 0 $47,571,943 35.4%
NATURAL FORCE DAMAGE
EARTH MOVEMENT 1 0.2% 0 0 $174,800 0.1%
HEAVY RAINS/FLOODS 4 1.1% 0 0 $99,557 0.0%
LIGHTNING 1 0.2% 0 0 $1,162,004 0.8%
TEMPERATURE 6 1.6% 0 0 $364,108 0.2%
HIGH WINDS 1 0.2% 0 0 $17,000 0.0%
OTHER NATURAL FORCE DAMAGE 1 0.2% 0 0 $1,110 0.0%
Sub Total 14 3.8% 0 0 $1,818,579 1.3%
OTHER OUTSIDE FORCE DAMAGE
VEHICLE NOT ENGAGED IN EXCAVATION 3 0.8% 2 3 $2,879,437 2.1%
ELECTRICAL ARCING FROM OTHER EQUIPMENT/FACILITY 1 0.2% 0 0 $113,318 0.0%
OTHER OUTSIDE FORCE DAMAGE 2 0.5% 0 0 $228,360 0.1%
Sub Total 6 1.6% 2 3 $3,221,115 2.4%
ALL OTHER CAUSES
MISCELLANEOUS CAUSE 9 2.4% 0 0 $3,243,940 2.4%
UNKNOWN CAUSE 3 0.8% 1 1 $158,100 0.1%
Sub Total 12 3.3% 1 1 $3,402,040 2.5%
Totals 364 100.0% 3 4 $134,117,754 100.0%
National, Hazardous Liquid, 2012
National Hazardous Liquid Onshore: All Reported Incident Details: 2012
Reported Cause of Incident (A) Number % Fatalities Injuries Property Damage as Reported (B) (C) % of Property Damage
CORROSION
EXTERNAL CORROSION 31 8.5% 0 0 $21,021,709 15.6%
INTERNAL CORROSION 66 18.1% 0 0 $26,706,404 19.9%
Sub Total 97 26.6% 0 0 $47,728,113 35.5%
EXCAVATION DAMAGE
OPERATOR/CONTRACTOR EXCAVATION DAMAGE 2 0.5% 0 0 $53,750 0.0%
THIRD PARTY EXCAVATION DAMAGE 7 1.9% 0 0 $3,665,602 2.7%
PREVIOUS DAMAGE DUE TO EXCAVATION 2 0.5% 0 0 $19,115,394 14.2%
Sub Total 11 3.0% 0 0 $22,834,746 17.0%
INCORRECT OPERATION
DAMAGE BY OPERATOR OR OPERATOR'S CONTRACTOR 4 1.1% 0 0 $212,883 0.1%
OVERFILL/OVERFLOW OF TANK/VESSEL/SUMP 9 2.4% 0 0 $350,150 0.2%
INCORRECT VALVE POSITION 12 3.3% 0 0 $303,027 0.2%
PIPELINE/EQUIPMENT OVERPRESSURED 5 1.3% 0 0 $3,959,033 2.9%
INCORRECT INSTALLATION 10 2.7% 0 0 $804,822 0.6%
INCORRECT EQUIPMENT 2 0.5% 0 0 $5,823 0.0%
OTHER INCORRECT OPERATION 10 2.7% 0 0 $1,675,475 1.2%
Sub Total 52 14.2% 0 0 $7,311,213 5.4%
MAT'L/WELD/EQUIP FAILURE
CONSTRUCTION, INSTALLATION OR FABRICATION-RELATED 14 3.8% 0 0 $1,687,207 1.2%
MANUFACTURING-RELATED 10 2.7% 0 0 $32,208,538 24.0%
ENVIRONMENTAL CRACKING-RELATED 2 0.5% 0 0 $1,216,518 0.9%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT 17 4.6% 0 0 $630,192 0.4%
PUMP/COMPRESSOR-RELATED EQUIPMENT 51 14.0% 0 0 $2,848,541 2.1%
THREADED CONNECTION/COUPLING FAILURE 13 3.5% 0 0 $505,437 0.3%
NON-THREADED CONNECTION FAILURE 27 7.4% 0 0 $5,462,052 4.0%
DEFECTIVE OR LOOSE TUBING/FITTING 6 1.6% 0 0 $612,220 0.4%
FAILURE OF EQUIPMENT BODY 6 1.6% 0 0 $54,535 0.0%
OTHER EQUIPMENT FAILURE 24 6.5% 0 0 $1,876,701 1.4%
Sub Total 170 46.7% 0 0 $47,101,941 35.1%
NATURAL FORCE DAMAGE
EARTH MOVEMENT 1 0.2% 0 0 $174,800 0.1%
HEAVY RAINS/FLOODS 4 1.1% 0 0 $99,557 0.0%
LIGHTNING 1 0.2% 0 0 $1,162,004 0.8%
TEMPERATURE 6 1.6% 0 0 $364,108 0.2%
HIGH WINDS 1 0.2% 0 0 $17,000 0.0%
OTHER NATURAL FORCE DAMAGE 1 0.2% 0 0 $1,110 0.0%
Sub Total 14 3.8% 0 0 $1,818,579 1.3%
OTHER OUTSIDE FORCE DAMAGE
VEHICLE NOT ENGAGED IN EXCAVATION 3 0.8% 2 3 $2,879,437 2.1%
ELECTRICAL ARCING FROM OTHER EQUIPMENT/FACILITY 1 0.2% 0 0 $113,318 0.0%
OTHER OUTSIDE FORCE DAMAGE 1 0.2% 0 0 $58,360 0.0%
Sub Total 5 1.3% 2 3 $3,051,115 2.2%
ALL OTHER CAUSES
MISCELLANEOUS CAUSE 9 2.4% 0 0 $3,243,940 2.4%
UNKNOWN CAUSE 3 0.8% 1 1 $158,100 0.1%
Sub Total 12 3.3% 1 1 $3,402,040 2.5%
Totals 361 99.1% 3 4 $133,247,747 99.3%
National, Hazardous Liquid Onshore, 2012
National Hazardous Liquid Offshore: All Reported Incident Details: 2012
Reported Cause of Incident (A) Number % Fatalities Injuries Property Damage as Reported (B) (C) % of Property Damage
CORROSION
EXTERNAL CORROSION 1 0.2% 0 0 $230,005 0.1%
Sub Total 1 0.2% 0 0 $230,005 0.1%
MAT'L/WELD/EQUIP FAILURE
NON-THREADED CONNECTION FAILURE 1 0.2% 0 0 $470,002 0.3%
Sub Total 1 0.2% 0 0 $470,002 0.3%
OTHER OUTSIDE FORCE DAMAGE
OTHER OUTSIDE FORCE DAMAGE 1 0.2% 0 0 $170,000 0.1%
Sub Total 1 0.2% 0 0 $170,000 0.1%
Totals 3 0.8% 0 0 $870,007 0.6%
National, Hazardous Liquid Offshore, 2012
National Gas Transmission: All Reported Incident Details: 2012
Reported Cause of Incident (A) Number % Fatalities Injuries Property Damage as Reported (B) (C) % of Property Damage
CORROSION
EXTERNAL CORROSION 12 11.5% 0 0 $2,410,728 4.7%
INTERNAL CORROSION 14 13.4% 0 0 $5,988,888 11.7%
Sub Total 26 25.0% 0 0 $8,399,616 16.4%
EXCAVATION DAMAGE
OPERATOR/CONTRACTOR EXCAVATION DAMAGE 3 2.8% 0 0 $731,500 1.4%
THIRD PARTY EXCAVATION DAMAGE 9 8.6% 0 2 $1,892,265 3.7%
PREVIOUS DAMAGE DUE TO EXCAVATION 1 0.9% 0 0 $546,000 1.0%
Sub Total 13 12.5% 0 2 $3,169,765 6.2%
INCORRECT OPERATION
DAMAGE BY OPERATOR OR OPERATOR'S CONTRACTOR 1 0.9% 0 0 $15,470 0.0%
INCORRECT VALVE POSITION 2 1.9% 0 0 $62,701 0.1%
OTHER INCORRECT OPERATION 2 1.9% 0 0 $265,000 0.5%
Sub Total 5 4.8% 0 0 $343,171 0.6%
MAT'L/WELD/EQUIP FAILURE
CONSTRUCTION, INSTALLATION OR FABRICATION-RELATED 7 6.7% 0 0 $2,272,375 4.4%
MANUFACTURING-RELATED 4 3.8% 0 0 $2,074,029 4.0%
ENVIRONMENTAL CRACKING-RELATED 1 0.9% 0 0 $103,966 0.2%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT 17 16.3% 0 0 $933,859 1.8%
PUMP/COMPRESSOR-RELATED EQUIPMENT 3 2.8% 0 1 $365,347 0.7%
THREADED CONNECTION/COUPLING FAILURE 5 4.8% 0 0 $1,803,720 3.5%
NON-THREADED CONNECTION FAILURE 1 0.9% 0 0 $33,096 0.0%
DEFECTIVE OR LOOSE TUBING/FITTING 1 0.9% 0 0 $43,569 0.0%
OTHER EQUIPMENT FAILURE 2 1.9% 0 0 $2,578,893 5.0%
Sub Total 41 39.4% 0 1 $10,208,854 20.0%
NATURAL FORCE DAMAGE
EARTH MOVEMENT 3 2.8% 0 0 $1,983,451 3.8%
TEMPERATURE 1 0.9% 0 0 $15,297 0.0%
HIGH WINDS 1 0.9% 0 0 $48,500 0.1%
Sub Total 5 4.8% 0 0 $2,047,248 4.0%
OTHER OUTSIDE FORCE DAMAGE
FIRE/EXPLOSION AS PRIMARY CAUSE 1 0.9% 0 0 $69,240 0.1%
VEHICLE NOT ENGAGED IN EXCAVATION 2 1.9% 0 4 $74,232 0.1%
MARITIME EQUIPMENT OR VESSEL ADRIFT 1 0.9% 0 0 $96,700 0.1%
FISHING OR MARITIME ACTIVITY 1 0.9% 0 0 $28,475 0.0%
OTHER OUTSIDE FORCE DAMAGE 2 1.9% 0 0 $25,649,341 50.3%
Sub Total 7 6.7% 0 4 $25,917,988 50.8%
ALL OTHER CAUSES
MISCELLANEOUS CAUSE 6 5.7% 0 0 $584,427 1.1%
UNKNOWN CAUSE 1 0.9% 0 0 $285,760 0.5%
Sub Total 7 6.7% 0 0 $870,187 1.7%
Totals 104 100.0% 0 7 $50,956,829 100.0%
National, Gas Transmission, 2012
National Gas Transmission Onshore: All Reported Incident Details: 2012
Reported Cause of Incident (A) Number % Fatalities Injuries Property Damage as Reported (B) (C) % of Property Damage
CORROSION
EXTERNAL CORROSION 9 8.6% 0 0 $1,740,353 3.4%
INTERNAL CORROSION 3 2.8% 0 0 $1,613,414 3.1%
Sub Total 12 11.5% 0 0 $3,353,767 6.5%
EXCAVATION DAMAGE
OPERATOR/CONTRACTOR EXCAVATION DAMAGE 3 2.8% 0 0 $731,500 1.4%
THIRD PARTY EXCAVATION DAMAGE 9 8.6% 0 2 $1,892,265 3.7%
PREVIOUS DAMAGE DUE TO EXCAVATION 1 0.9% 0 0 $546,000 1.0%
Sub Total 13 12.5% 0 2 $3,169,765 6.2%
INCORRECT OPERATION
DAMAGE BY OPERATOR OR OPERATOR'S CONTRACTOR 1 0.9% 0 0 $15,470 0.0%
INCORRECT VALVE POSITION 2 1.9% 0 0 $62,701 0.1%
OTHER INCORRECT OPERATION 2 1.9% 0 0 $265,000 0.5%
Sub Total 5 4.8% 0 0 $343,171 0.6%
MAT'L/WELD/EQUIP FAILURE
CONSTRUCTION, INSTALLATION OR FABRICATION-RELATED 6 5.7% 0 0 $1,096,764 2.1%
MANUFACTURING-RELATED 4 3.8% 0 0 $2,074,029 4.0%
ENVIRONMENTAL CRACKING-RELATED 1 0.9% 0 0 $103,966 0.2%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT 17 16.3% 0 0 $933,859 1.8%
PUMP/COMPRESSOR-RELATED EQUIPMENT 3 2.8% 0 1 $365,347 0.7%
THREADED CONNECTION/COUPLING FAILURE 5 4.8% 0 0 $1,803,720 3.5%
NON-THREADED CONNECTION FAILURE 1 0.9% 0 0 $33,096 0.0%
DEFECTIVE OR LOOSE TUBING/FITTING 1 0.9% 0 0 $43,569 0.0%
OTHER EQUIPMENT FAILURE 2 1.9% 0 0 $2,578,893 5.0%
Sub Total 40 38.4% 0 1 $9,033,243 17.7%
NATURAL FORCE DAMAGE
EARTH MOVEMENT 3 2.8% 0 0 $1,983,451 3.8%
TEMPERATURE 1 0.9% 0 0 $15,297 0.0%
HIGH WINDS 1 0.9% 0 0 $48,500 0.1%
Sub Total 5 4.8% 0 0 $2,047,248 4.0%
OTHER OUTSIDE FORCE DAMAGE
FIRE/EXPLOSION AS PRIMARY CAUSE 1 0.9% 0 0 $69,240 0.1%
VEHICLE NOT ENGAGED IN EXCAVATION 2 1.9% 0 4 $74,232 0.1%
MARITIME EQUIPMENT OR VESSEL ADRIFT 1 0.9% 0 0 $96,700 0.1%
FISHING OR MARITIME ACTIVITY 1 0.9% 0 0 $28,475 0.0%
OTHER OUTSIDE FORCE DAMAGE 2 1.9% 0 0 $25,649,341 50.3%
Sub Total 7 6.7% 0 4 $25,917,988 50.8%
ALL OTHER CAUSES
MISCELLANEOUS CAUSE 6 5.7% 0 0 $584,427 1.1%
UNKNOWN CAUSE 1 0.9% 0 0 $285,760 0.5%
Sub Total 7 6.7% 0 0 $870,187 1.7%
Totals 89 85.5% 0 7 $44,735,369 87.7%
National, Gas Transmission Onshore, 2012
National Gas Transmission Offshore: All Reported Incident Details: 2012
Reported Cause of Incident (A) Number % Fatalities Injuries Property Damage as Reported (B) (C) % of Property Damage
CORROSION
EXTERNAL CORROSION 3 2.8% 0 0 $670,375 1.3%
INTERNAL CORROSION 11 10.5% 0 0 $4,375,474 8.5%
Sub Total 14 13.4% 0 0 $5,045,849 9.9%
MAT'L/WELD/EQUIP FAILURE
CONSTRUCTION, INSTALLATION OR FABRICATION-RELATED 1 0.9% 0 0 $1,175,611 2.3%
Sub Total 1 0.9% 0 0 $1,175,611 2.3%
Totals 15 14.4% 0 0 $6,221,460 12.2%
National, Gas Transmission Offshore, 2012
National Gas Gathering: All Reported Incident Details: 2012
Reported Cause of Incident (A) Number % Fatalities Injuries Property Damage as Reported (B) (C) % of Property Damage
CORROSION
INTERNAL CORROSION 5 41.6% 0 0 $983,494 33.4%
Sub Total 5 41.6% 0 0 $983,494 33.4%
EXCAVATION DAMAGE
PREVIOUS DAMAGE DUE TO EXCAVATION 1 8.3% 0 0 $34,500 1.1%
Sub Total 1 8.3% 0 0 $34,500 1.1%
MAT'L/WELD/EQUIP FAILURE
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT 3 25.0% 0 0 $124,060 4.2%
NON-THREADED CONNECTION FAILURE 1 8.3% 0 0 $2,000 0.0%
OTHER EQUIPMENT FAILURE 1 8.3% 0 0 $3,000 0.1%
Sub Total 5 41.6% 0 0 $129,060 4.3%
ALL OTHER CAUSES
MISCELLANEOUS CAUSE 1 8.3% 0 0 $1,790,767 60.9%
Sub Total 1 8.3% 0 0 $1,790,767 60.9%
Totals 12 100.0% 0 0 $2,937,821 100.0%
National, Gas Gathering, 2012
National Gas Distribution: All Reported Incident Details: 2012
Reported Cause of Incident (A) Number % Fatalities Injuries Property Damage as Reported (B) (C) % of Property Damage
CORROSION
EXTERNAL CORROSION 3 3.3% 0 2 $241,411 0.9%
Sub Total 3 3.3% 0 2 $241,411 0.9%
EXCAVATION DAMAGE
OPERATOR/CONTRACTOR EXCAVATION DAMAGE 1 1.1% 0 0 $193 0.0%
THIRD PARTY EXCAVATION DAMAGE 16 17.7% 1 5 $7,975,385 31.2%
PREVIOUS DAMAGE DUE TO EXCAVATION 1 1.1% 0 4 $182,500 0.7%
Sub Total 18 20.0% 1 9 $8,158,078 31.9%
INCORRECT OPERATION
DAMAGE BY OPERATOR OR OPERATOR'S CONTRACTOR 2 2.2% 0 17 $1,318,308 5.1%
INCORRECT VALVE POSITION 2 2.2% 0 0 $3,020,630 11.8%
OTHER INCORRECT OPERATION 3 3.3% 0 1 $607,242 2.3%
Sub Total 7 7.7% 0 18 $4,946,180 19.3%
MAT'L/WELD/EQUIP FAILURE
BODY OF PIPE 1 1.1% 0 0 $72,000 0.2%
BUTT WELD 1 1.1% 0 0 $53,600 0.2%
FUSION JOINT 1 1.1% 0 1 $72,027 0.2%
OTHER PIPE/WELD/JOINT FAILURE 1 1.1% 0 1 $24,520 0.1%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT 1 1.1% 0 1 $2,500 0.0%
VALVE 3 3.3% 0 0 $421,910 1.6%
NON-THREADED CONNECTION FAILURE 3 3.3% 0 0 $1,566,798 6.1%
Sub Total 11 12.2% 0 3 $2,213,355 8.6%
NATURAL FORCE DAMAGE
HEAVY RAINS/FLOODS 1 1.1% 0 0 $1,010,581 3.9%
LIGHTNING 2 2.2% 0 1 $144,191 0.5%
OTHER NATURAL FORCE DAMAGE 3 3.3% 1 2 $1,607,370 6.2%
Sub Total 6 6.6% 1 3 $2,762,142 10.8%
OTHER OUTSIDE FORCE DAMAGE
FIRE/EXPLOSION AS PRIMARY CAUSE 9 10.0% 2 3 $1,371,056 5.3%
VEHICLE NOT ENGAGED IN EXCAVATION 15 16.6% 4 2 $1,426,659 5.5%
ELECTRICAL ARCING FROM OTHER EQUIPMENT/FACILITY 5 5.5% 0 0 $382,468 1.5%
PREVIOUS MECHANICAL DAMAGE 1 1.1% 0 0 $605,348 2.3%
INTENTIONAL DAMAGE 3 3.3% 1 2 $199,944 0.7%
OTHER OUTSIDE FORCE DAMAGE 4 4.4% 0 1 $1,297,927 5.0%
Sub Total 37 41.1% 7 8 $5,283,402 20.6%
ALL OTHER CAUSES
MISCELLANEOUS CAUSE 4 4.4% 0 0 $915,149 3.5%
UNKNOWN CAUSE 4 4.4% 0 4 $1,037,518 4.0%
Sub Total 8 8.8% 0 4 $1,952,667 7.6%
Totals 90 100.0% 9 47 $25,557,235 100.0%
National, Gas Distribution, 2012

Notes

  1. 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.
  2. The costs presented here are nominal (that is, as reported by the Operator at the time of the incident) and are not adjusted to account for commodity cost fluctuations or general inflation.
  3. 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 - July 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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