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Serious Pipeline Incidents By Cause

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

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

Where appropriate, the table columns can be sorted by clicking the corresponding column header.

More Pipeline Incidents Reports are available.

National All Pipeline Systems: Serious Incident Details: 2011
Reported Cause of Incident (B) Number (C) % Fatalities Injuries Property Damage (D) (E) % of Property Damage
CORROSION
EXTERNAL CORROSION 2 6.2% 1 2 $41,700 0.6%
Sub Total 2 6.2% 1 2 $41,700 0.6%
EXCAVATION DAMAGE
OPERATOR/CONTRACTOR EXCAVATION DAMAGE 1 3.1% 0 6 $88,904 1.2%
THIRD PARTY EXCAVATION DAMAGE 6 18.7% 2 10 $1,315,561 18.9%
Sub Total 7 21.8% 2 16 $1,404,465 20.2%
INCORRECT OPERATION
OTHER INCORRECT OPERATION 4 12.5% 0 4 $1,416,544 20.4%
Sub Total 4 12.5% 0 4 $1,416,544 20.4%
MAT'L/WELD/EQUIP FAILURE
BODY OF PIPE 2 6.2% 1 7 $531,082 7.6%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT 1 3.1% 0 1 $47,245 0.6%
OTHER EQUIPMENT FAILURE 1 3.1% 1 1 $0 0.0%
Sub Total 4 12.5% 2 9 $578,327 8.3%
OTHER OUTSIDE FORCE DAMAGE
VEHICLE NOT ENGAGED IN EXCAVATION 4 12.5% 1 4 $144,017 2.0%
ELECTRICAL ARCING FROM OTHER EQUIPMENT/FACILITY 1 3.1% 0 2 $511,500 7.3%
OTHER OUTSIDE FORCE DAMAGE 1 3.1% 0 1 $2,076 0.0%
Sub Total 6 18.7% 1 7 $657,593 9.4%
ALL OTHER CAUSES
MISCELLANEOUS CAUSE 4 12.5% 0 4 $10,890 0.1%
UNKNOWN CAUSE 5 15.6% 6 9 $2,816,571 40.6%
Sub Total 9 28.1% 6 13 $2,827,461 40.8%
Totals 32 100.0% 12 51 $6,926,090 100.0%
National, All Pipeline Systems, 2011
National Hazardous Liquid: Serious Incident Details: 2011
Reported Cause of Incident (B) Number % Fatalities Injuries Property Damage (D) (E) % of Property Damage
MAT'L/WELD/EQUIP FAILURE
OTHER EQUIPMENT FAILURE 1 50.0% 1 1 $0 0.0%
Sub Total 1 50.0% 1 1 $0 0.0%
ALL OTHER CAUSES
MISCELLANEOUS CAUSE 1 50.0% 0 1 $10,500 100.0%
Sub Total 1 50.0% 0 1 $10,500100.0%
Totals 2 100.0% 1 2 $10,500 100.0%
National, Hazardous Liquid, 2011
National Hazardous Liquid Onshore: Serious Incident Details: 2011
Reported Cause of Incident (B) Number % Fatalities Injuries Property Damage (D) (E) % of Property Damage
MAT'L/WELD/EQUIP FAILURE
OTHER EQUIPMENT FAILURE 1 50.0% 1 1 $0 0.0%
Sub Total 1 50.0% 1 1 $0 0.0%
ALL OTHER CAUSES
MISCELLANEOUS CAUSE 1 50.0% 0 1 $10,500 100.0%
Sub Total 1 50.0% 0 1 $10,500100.0%
Totals 2 100.0% 1 2 $10,500 100.0%
National, Hazardous Liquid Onshore, 2011

No Data Available

National Gas Transmission: Serious Incident Details: 2011
Reported Cause of Incident (B) Number % Fatalities Injuries Property Damage (D) (E) % of Property Damage
INCORRECT OPERATION
OTHER INCORRECT OPERATION 1 100.0% 0 1 $1,413,979 100.0%
Sub Total 1100.0% 0 1 $1,413,979100.0%
Totals 1 100.0% 0 1 $1,413,979 100.0%
National, Gas Transmission, 2011
National Gas Transmission Onshore: Serious Incident Details: 2011
Reported Cause of Incident (B) Number % Fatalities Injuries Property Damage (D) (E) % of Property Damage
INCORRECT OPERATION
OTHER INCORRECT OPERATION 1 100.0% 0 1 $1,413,979 100.0%
Sub Total 1100.0% 0 1 $1,413,979100.0%
Totals 1 100.0% 0 1 $1,413,979 100.0%
National, Gas Transmission Onshore, 2011

No Data Available

No Data Available

National Gas Distribution: Serious Incident Details: 2011
Reported Cause of Incident (B) Number (C) % Fatalities Injuries Property Damage (D) (E) % of Property Damage
CORROSION
EXTERNAL CORROSION 2 6.9% 1 2 $41,700 0.7%
Sub Total 2 6.9% 1 2 $41,700 0.7%
EXCAVATION DAMAGE
OPERATOR/CONTRACTOR EXCAVATION DAMAGE 1 3.4% 0 6 $88,904 1.6%
THIRD PARTY EXCAVATION DAMAGE 6 20.6% 2 10 $1,315,561 23.9%
Sub Total 7 24.1% 2 16 $1,404,465 25.5%
INCORRECT OPERATION
OTHER INCORRECT OPERATION 3 10.3% 0 3 $2,565 0.0%
Sub Total 3 10.3% 0 3 $2,565 0.0%
MAT'L/WELD/EQUIP FAILURE
BODY OF PIPE 2 6.9% 1 7 $531,082 9.6%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT 1 3.4% 0 1 $47,245 0.8%
Sub Total 3 10.3% 1 8 $578,327 10.5%
OTHER OUTSIDE FORCE DAMAGE
VEHICLE NOT ENGAGED IN EXCAVATION 4 13.7% 1 4 $144,017 2.6%
ELECTRICAL ARCING FROM OTHER EQUIPMENT/FACILITY 1 3.4% 0 2 $511,500 9.3%
OTHER OUTSIDE FORCE DAMAGE 1 3.4% 0 1 $2,076 0.0%
Sub Total 6 20.6% 1 7 $657,593 11.9%
ALL OTHER CAUSES
MISCELLANEOUS CAUSE 3 10.3% 0 3 $390 0.0%
UNKNOWN CAUSE 5 17.2% 6 9 $2,816,571 51.2%
Sub Total 8 27.5% 6 12 $2,816,961 51.2%
Totals 29 100.0% 11 48 $5,501,611 100.0%
National, Gas Distribution, 2011

Notes

  1. Serious Incidents are those incidents reported by pipeline operators involving 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 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.
  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 - 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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