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Significant Pipeline Incidents By Cause

This report is a sub-report of the Oklahoma Significant Incident and Mileage Overview 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 Filtered Incident Files. (1) (2) (3)

More Pipeline Incidents and Mileage Reports are available.

Important Update: As of October 2009, these reports were modified to exclude 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 (B)
Oklahoma All Pipeline Systems: Significant Incident Details: 1999-2008
Reported Cause of Incident (C) Number (B) % Fatalities Injuries Property Damage (D) (E) % of Property Damage
CORROSION
CORROSION, EXTERNAL 6 4.8% 0 0 $6,799,604 16.3%
CORROSION, INTERNAL 19 15.3% 0 0 $2,252,095 5.4%
VARIOUS 12 9.6% 0 2 $937,306 2.2%
Sub Total 37 29.8% 0 2 $9,989,006 23.9%
EXCAVATION DAMAGE
OPERATOR EXCAVATION DAMAGE 2 1.6% 0 0 $1,591,377 3.8%
THIRD PARTY EXCAVATION DAMAGE 12 9.6% 1 0 $3,695,713 8.8%
VARIOUS 10 8.0% 0 1 $1,260,170 3.0%
Sub Total 24 19.3% 1 1 $6,547,261 15.7%
INCORRECT OPERATION
INCORRECT OPERATION 4 3.2% 0 0 $718,269 1.7%
VARIOUS 5 4.0% 0 4 $2,497,387 5.9%
Sub Total 9 7.2% 0 4 $3,215,656 7.7%
MAT'L/WELD/EQUIP FAILURE
BODY OF PIPE 3 2.4% 0 0 $753,241 1.8%
COMPONENT 2 1.6% 0 0 $62,313 0.1%
FILLET WELD 1 0.8% 0 0 $669,700 1.6%
JOINT 1 0.8% 0 0 $17,000 0.0%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT 3 2.4% 0 0 $215,857 0.5%
PIPE SEAM WELD 1 0.8% 0 0 $114,860 0.2%
RUPTURED OR LEAKING SEAL/PUMP PACKING 2 1.6% 0 0 $9,112 0.0%
THREADS STRIPPED, BROKEN PIPE COUPLING 3 2.4% 0 1 $123,699 0.3%
VARIOUS 7 5.6% 0 1 $437,347 1.0%
Sub Total 23 18.5% 0 2 $2,403,131 5.7%
NATURAL FORCE DAMAGE
EARTH MOVEMENT 1 0.8% 0 0 $249,154 0.6%
HEAVY RAINS/FLOODS 1 0.8% 0 0 $524,374 1.2%
LIGHTNING 2 1.6% 0 0 $8,899,147 21.3%
Sub Total 4 3.2% 0 0 $9,672,677 23.2%
OTHER OUTSIDE FORCE DAMAGE
CAR, TRUCK OR OTHER VEHICLE NOT RELATED TO... 1 0.8% 1 0 $7,527 0.0%
FIRE/EXPLOSION AS PRIMARY CAUSE 1 0.8% 0 0 $2,712,720 6.5%
VANDALISM 2 1.6% 0 0 $92,311 0.2%
Sub Total 4 3.2% 1 0 $2,812,559 6.7%
ALL OTHER CAUSES
MISCELLANEOUS 6 4.8% 0 0 $2,907,723 6.9%
VARIOUS 17 13.7% 1 1 $4,152,053 9.9%
Sub Total 23 18.5% 1 1 $7,059,777 16.9%
Totals 124 100.0% 3 10 $41,700,069 100.0%
Oklahoma, All Pipeline Systems, 1999-2008
Oklahoma Hazardous Liquid: Significant Incident Details: 1999-2008
Reported Cause of Incident (C) Number % Fatalities Injuries Property Damage (D) (E) % of Property Damage
CORROSION
CORROSION, EXTERNAL 4 4.4% 0 0 $5,445,095 17.4%
CORROSION, INTERNAL 19 21.1% 0 0 $2,252,095 7.2%
VARIOUS 10 11.1% 0 0 $711,976 2.2%
Sub Total 33 36.6% 0 0 $8,409,167 26.9%
EXCAVATION DAMAGE
OPERATOR EXCAVATION DAMAGE 2 2.2% 0 0 $1,591,377 5.1%
THIRD PARTY EXCAVATION DAMAGE 7 7.7% 0 0 $2,907,951 9.3%
VARIOUS 7 7.7% 0 0 $641,697 2.0%
Sub Total 16 17.7% 0 0 $5,141,026 16.4%
INCORRECT OPERATION
INCORRECT OPERATION 3 3.3% 0 0 $618,702 1.9%
VARIOUS 3 3.3% 0 2 $2,497,387 8.0%
Sub Total 6 6.6% 0 2 $3,116,089 9.9%
MAT'L/WELD/EQUIP FAILURE
BODY OF PIPE 2 2.2% 0 0 $620,742 1.9%
COMPONENT 2 2.2% 0 0 $62,313 0.2%
FILLET WELD 1 1.1% 0 0 $669,700 2.1%
JOINT 1 1.1% 0 0 $17,000 0.0%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT 2 2.2% 0 0 $7,607 0.0%
PIPE SEAM WELD 1 1.1% 0 0 $114,860 0.3%
RUPTURED OR LEAKING SEAL/PUMP PACKING 2 2.2% 0 0 $9,112 0.0%
THREADS STRIPPED, BROKEN PIPE COUPLING 1 1.1% 0 0 $7,997 0.0%
VARIOUS 4 4.4% 0 0 $161,938 0.5%
Sub Total 16 17.7% 0 0 $1,671,271 5.3%
NATURAL FORCE DAMAGE
EARTH MOVEMENT 1 1.1% 0 0 $249,154 0.8%
HEAVY RAINS/FLOODS 1 1.1% 0 0 $524,374 1.6%
LIGHTNING 2 2.2% 0 0 $8,899,147 28.5%
Sub Total 4 4.4% 0 0 $9,672,677 31.0%
OTHER OUTSIDE FORCE DAMAGE
FIRE/EXPLOSION AS PRIMARY CAUSE 1 1.1% 0 0 $2,712,720 8.6%
VANDALISM 2 2.2% 0 0 $92,311 0.3%
Sub Total 3 3.3% 0 0 $2,805,031 8.9%
ALL OTHER CAUSES
MISCELLANEOUS 2 2.2% 0 0 $172,207 0.5%
VARIOUS 10 11.1% 0 0 $212,137 0.6%
Sub Total 12 13.3% 0 0 $384,344 1.2%
Totals 90 100.0% 0 2 $31,199,609 100.0%
Oklahoma, Hazardous Liquid, 1999-2008
Oklahoma Hazardous Liquid Onshore: Significant Incident Details: 1999-2008
Reported Cause of Incident (C) Number % Fatalities Injuries Property Damage (D) (E) % of Property Damage
CORROSION
CORROSION, EXTERNAL 4 4.4% 0 0 $5,445,095 17.4%
CORROSION, INTERNAL 19 21.1% 0 0 $2,252,095 7.2%
VARIOUS 10 11.1% 0 0 $711,976 2.2%
Sub Total 33 36.6% 0 0 $8,409,167 26.9%
EXCAVATION DAMAGE
OPERATOR EXCAVATION DAMAGE 2 2.2% 0 0 $1,591,377 5.1%
THIRD PARTY EXCAVATION DAMAGE 7 7.7% 0 0 $2,907,951 9.3%
VARIOUS 7 7.7% 0 0 $641,697 2.0%
Sub Total 16 17.7% 0 0 $5,141,026 16.4%
INCORRECT OPERATION
INCORRECT OPERATION 3 3.3% 0 0 $618,702 1.9%
VARIOUS 3 3.3% 0 2 $2,497,387 8.0%
Sub Total 6 6.6% 0 2 $3,116,089 9.9%
MAT'L/WELD/EQUIP FAILURE
BODY OF PIPE 2 2.2% 0 0 $620,742 1.9%
COMPONENT 2 2.2% 0 0 $62,313 0.2%
FILLET WELD 1 1.1% 0 0 $669,700 2.1%
JOINT 1 1.1% 0 0 $17,000 0.0%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT 2 2.2% 0 0 $7,607 0.0%
PIPE SEAM WELD 1 1.1% 0 0 $114,860 0.3%
RUPTURED OR LEAKING SEAL/PUMP PACKING 2 2.2% 0 0 $9,112 0.0%
THREADS STRIPPED, BROKEN PIPE COUPLING 1 1.1% 0 0 $7,997 0.0%
VARIOUS 4 4.4% 0 0 $161,938 0.5%
Sub Total 16 17.7% 0 0 $1,671,271 5.3%
NATURAL FORCE DAMAGE
EARTH MOVEMENT 1 1.1% 0 0 $249,154 0.8%
HEAVY RAINS/FLOODS 1 1.1% 0 0 $524,374 1.6%
LIGHTNING 2 2.2% 0 0 $8,899,147 28.5%
Sub Total 4 4.4% 0 0 $9,672,677 31.0%
OTHER OUTSIDE FORCE DAMAGE
FIRE/EXPLOSION AS PRIMARY CAUSE 1 1.1% 0 0 $2,712,720 8.6%
VANDALISM 2 2.2% 0 0 $92,311 0.3%
Sub Total 3 3.3% 0 0 $2,805,031 8.9%
ALL OTHER CAUSES
MISCELLANEOUS 2 2.2% 0 0 $172,207 0.5%
VARIOUS 10 11.1% 0 0 $212,137 0.6%
Sub Total 12 13.3% 0 0 $384,344 1.2%
Totals 90 100.0% 0 2 $31,199,609 100.0%
Oklahoma, Hazardous Liquid Onshore, 1999-2008

No Data Available

Oklahoma Gas Transmission: Significant Incident Details: 1999-2008
Reported Cause of Incident (C) Number % Fatalities Injuries Property Damage (D) (E) % of Property Damage
CORROSION
CORROSION, EXTERNAL 2 9.5% 0 0 $1,354,509 16.4%
VARIOUS 1 4.7% 0 0 $182,700 2.2%
Sub Total 3 14.2% 0 0 $1,537,209 18.6%
EXCAVATION DAMAGE
THIRD PARTY EXCAVATION DAMAGE 3 14.2% 1 0 $559,991 6.8%
VARIOUS 1 4.7% 0 1 $0 0.0%
Sub Total 4 19.0% 1 1 $559,991 6.8%
INCORRECT OPERATION
INCORRECT OPERATION 1 4.7% 0 0 $99,566 1.2%
Sub Total 1 4.7% 0 0 $99,566 1.2%
MAT'L/WELD/EQUIP FAILURE
BODY OF PIPE 1 4.7% 0 0 $132,498 1.6%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT 1 4.7% 0 0 $208,250 2.5%
THREADS STRIPPED, BROKEN PIPE COUPLING 1 4.7% 0 0 $112,229 1.3%
VARIOUS 2 9.5% 0 0 $260,792 3.1%
Sub Total 5 23.8% 0 0 $713,770 8.6%
ALL OTHER CAUSES
MISCELLANEOUS 4 19.0% 0 0 $2,735,516 33.2%
VARIOUS 4 19.0% 1 0 $2,593,751 31.4%
Sub Total 8 38.1% 1 0 $5,329,267 64.6%
Totals 21 100.0% 2 1 $8,239,804 100.0%
Oklahoma, Gas Transmission, 1999-2008
Oklahoma Gas Transmission Onshore: Significant Incident Details: 1999-2008
Reported Cause of Incident (C) Number % Fatalities Injuries Property Damage (D) (E) % of Property Damage
CORROSION
CORROSION, EXTERNAL 2 9.5% 0 0 $1,354,509 16.4%
VARIOUS 1 4.7% 0 0 $182,700 2.2%
Sub Total 3 14.2% 0 0 $1,537,209 18.6%
EXCAVATION DAMAGE
THIRD PARTY EXCAVATION DAMAGE 3 14.2% 1 0 $559,991 6.8%
VARIOUS 1 4.7% 0 1 $0 0.0%
Sub Total 4 19.0% 1 1 $559,991 6.8%
INCORRECT OPERATION
INCORRECT OPERATION 1 4.7% 0 0 $99,566 1.2%
Sub Total 1 4.7% 0 0 $99,566 1.2%
MAT'L/WELD/EQUIP FAILURE
BODY OF PIPE 1 4.7% 0 0 $132,498 1.6%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT 1 4.7% 0 0 $208,250 2.5%
THREADS STRIPPED, BROKEN PIPE COUPLING 1 4.7% 0 0 $112,229 1.3%
VARIOUS 2 9.5% 0 0 $260,792 3.1%
Sub Total 5 23.8% 0 0 $713,770 8.6%
ALL OTHER CAUSES
MISCELLANEOUS 4 19.0% 0 0 $2,735,516 33.2%
VARIOUS 4 19.0% 1 0 $2,593,751 31.4%
Sub Total 8 38.1% 1 0 $5,329,267 64.6%
Totals 21 100.0% 2 1 $8,239,804 100.0%
Oklahoma, Gas Transmission Onshore, 1999-2008

No Data Available

No Data Available

Oklahoma Gas Distribution: Significant Incident Details: 1999-2008
Reported Cause of Incident (C) Number (B) % Fatalities Injuries Property Damage (D) (E) % of Property Damage
CORROSION
VARIOUS 1 7.6% 0 2 $42,630 1.8%
Sub Total 1 7.6% 0 2 $42,630 1.8%
EXCAVATION DAMAGE
THIRD PARTY EXCAVATION DAMAGE 2 15.3% 0 0 $227,771 10.0%
VARIOUS 2 15.3% 0 0 $618,472 27.3%
Sub Total 4 30.7% 0 0 $846,243 37.4%
INCORRECT OPERATION
VARIOUS 2 15.3% 0 2 $0 0.0%
Sub Total 2 15.3% 0 2 $0 0.0%
MAT'L/WELD/EQUIP FAILURE
THREADS STRIPPED, BROKEN PIPE COUPLING 1 7.6% 0 1 $3,473 0.1%
VARIOUS 1 7.6% 0 1 $14,616 0.6%
Sub Total 2 15.3% 0 2 $18,089 0.8%
OTHER OUTSIDE FORCE DAMAGE
CAR, TRUCK OR OTHER VEHICLE NOT RELATED TO... 1 7.6% 1 0 $7,527 0.3%
Sub Total 1 7.6% 1 0 $7,527 0.3%
ALL OTHER CAUSES
VARIOUS 3 23.0% 0 1 $1,346,165 59.5%
Sub Total 3 23.0% 0 1 $1,346,165 59.5%
Totals 13 100.0% 1 7 $2,260,655 100.0%
Oklahoma, Gas Distribution, 1999-2008

Notes

  1. Significant Incidents are those incidents reported by pipeline operators with 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. Note: Significant Incidents include all Serious Incidents. Unless otherwise noted, any counts of Significant Incidents also include Serious Incidents.
  2. 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.
  3. 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.
  4. The costs for incidents prior to 2008 are presented in 2008 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. All costs prior to 2008 are expressed in 2008 dollars.

Sources

  1. PHMSA Hazardous Liquid Flagged Incidents File - October 14, 2009
  2. PHMSA Gas Transmission Flagged Incidents File - October 14, 2009
  3. PHMSA Gas Distribution Flagged Incidents File - October 14, 2009

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

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