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This report is a sub-report of the Minnesota 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.

• All Pipeline Systems
• Hazardous Liquid
• Gas Transmission
• Gas Gathering
• Gas Distribution

Minnesota All Pipeline Systems: Significant Incident Details: 1998-2008 YTD

Reported Cause of Incident	Number	%	Fatalities	Injuries	Property Damage (B) (C)	% of Property Damage
CORROSION
CORROSION, EXTERNAL	1	1.5%	0	0	$1,790,089	4.6%
VARIOUS	2	3.0%	0	0	$390,556	1.0%
Sub Total	3	4.6%	0	0	$2,180,645	5.6%
EXCAVATION DAMAGE
OPERATOR EXCAVATION DAMAGE	1	1.5%	0	0	$11,372	0.0%
THIRD PARTY EXCAVATION DAMAGE	1	1.5%	0	0	$296,330	0.7%
VARIOUS	10	15.3%	4	2	$7,575,586	19.6%
Sub Total	12	18.4%	4	2	$7,883,289	20.4%
HUMAN ERROR
INCORRECT OPERATION	5	7.6%	2	2	$2,937,777	7.6%
Sub Total	5	7.6%	2	2	$2,937,777	7.6%
MATERIAL FAILURE
BUTT WELD	1	1.5%	0	0	$1,107,888	2.8%
COMPONENT	1	1.5%	0	0	$118,227	0.3%
FILLET WELD	2	3.0%	0	0	$278,248	0.7%
JOINT	1	1.5%	0	0	$22,157	0.0%
PIPE SEAM WELD	2	3.0%	0	0	$7,006,136	18.2%
RUPTURED OR LEAKING SEAL/PUMP PACKING	1	1.5%	0	0	$93,031	0.2%
VARIOUS	3	4.6%	0	1	$1,627,035	4.2%
Sub Total	11	16.9%	0	1	$10,252,726	26.6%
NATURAL FORCE DAMAGE
EARTH MOVEMENT	6	9.2%	0	3	$2,674,597	6.9%
LIGHTNING	1	1.5%	0	0	$151,000	0.3%
TEMPERATURE	2	3.0%	3	1	$428,058	1.1%
VARIOUS	4	6.1%	0	1	$2,009,443	5.2%
Sub Total	13	20.0%	3	5	$5,263,099	13.6%
OTHER OUTSIDE FORCE DAMAGE
CAR, TRUCK OR OTHER VEHICLE NOT RELATED TO...	2	3.0%	0	0	$298,643	0.7%
FIRE/EXPLOSION AS PRIMARY CAUSE	1	1.5%	0	0	$101	0.0%
RUPTURE OF PREVIOUSLY DAMAGED PIPE	2	3.0%	0	0	$4,813,211	12.5%
Sub Total	5	7.6%	0	0	$5,111,956	13.2%
ALL OTHER CAUSES
MISCELLANEOUS	1	1.5%	0	1	$164,029	0.4%
UNKNOWN	3	4.6%	0	0	$1,235,980	3.2%
VARIOUS	12	18.4%	0	1	$3,445,798	8.9%
Sub Total	16	24.6%	0	2	$4,845,808	12.5%
Totals	65	100.0%	9	12	$38,475,303	100.0%

• All Hazardous Liquid Systems
• Onshore Only
• Offshore Only

Minnesota Hazardous Liquid: Significant Incident Details: 1998-2008 YTD

Reported Cause of Incident	Number	%	Fatalities	Injuries	Property Damage (B) (C)	% of Property Damage
CORROSION
VARIOUS	1	2.9%	0	0	$239,277	1.1%
Sub Total	1	2.9%	0	0	$239,277	1.1%
EXCAVATION DAMAGE
OPERATOR EXCAVATION DAMAGE	1	2.9%	0	0	$11,372	0.0%
VARIOUS	6	17.6%	0	0	$746,679	3.6%
Sub Total	7	20.5%	0	0	$758,051	3.7%
HUMAN ERROR
INCORRECT OPERATION	3	8.8%	2	0	$2,825,224	13.9%
Sub Total	3	8.8%	2	0	$2,825,224	13.9%
MATERIAL FAILURE
BUTT WELD	1	2.9%	0	0	$1,107,888	5.4%
COMPONENT	1	2.9%	0	0	$118,227	0.5%
FILLET WELD	2	5.8%	0	0	$278,248	1.3%
JOINT	1	2.9%	0	0	$22,157	0.1%
PIPE SEAM WELD	2	5.8%	0	0	$7,006,136	34.6%
RUPTURED OR LEAKING SEAL/PUMP PACKING	1	2.9%	0	0	$93,031	0.4%
VARIOUS	2	5.8%	0	0	$454,335	2.2%
Sub Total	10	29.4%	0	0	$9,080,026	44.9%
NATURAL FORCE DAMAGE
EARTH MOVEMENT	3	8.8%	0	0	$1,861,601	9.2%
Sub Total	3	8.8%	0	0	$1,861,601	9.2%
OTHER OUTSIDE FORCE DAMAGE
FIRE/EXPLOSION AS PRIMARY CAUSE	1	2.9%	0	0	$101	0.0%
RUPTURE OF PREVIOUSLY DAMAGED PIPE	1	2.9%	0	0	$4,250,044	21.0%
Sub Total	2	5.8%	0	0	$4,250,145	21.0%
ALL OTHER CAUSES
VARIOUS	8	23.5%	0	0	$1,208,967	5.9%
Sub Total	8	23.5%	0	0	$1,208,967	5.9%
Totals	34	100.0%	2	0	$20,223,294	100.0%

Minnesota Hazardous Liquid Onshore: Significant Incident Details: 1998-2008 YTD

Reported Cause of Incident	Number	%	Fatalities	Injuries	Property Damage (B) (C)	% of Property Damage
CORROSION
VARIOUS	1	2.9%	0	0	$239,277	1.1%
Sub Total	1	2.9%	0	0	$239,277	1.1%
EXCAVATION DAMAGE
OPERATOR EXCAVATION DAMAGE	1	2.9%	0	0	$11,372	0.0%
VARIOUS	6	17.6%	0	0	$746,679	3.6%
Sub Total	7	20.5%	0	0	$758,051	3.7%
HUMAN ERROR
INCORRECT OPERATION	3	8.8%	2	0	$2,825,224	13.9%
Sub Total	3	8.8%	2	0	$2,825,224	13.9%
MATERIAL FAILURE
BUTT WELD	1	2.9%	0	0	$1,107,888	5.4%
COMPONENT	1	2.9%	0	0	$118,227	0.5%
FILLET WELD	2	5.8%	0	0	$278,248	1.3%
JOINT	1	2.9%	0	0	$22,157	0.1%
PIPE SEAM WELD	2	5.8%	0	0	$7,006,136	34.6%
RUPTURED OR LEAKING SEAL/PUMP PACKING	1	2.9%	0	0	$93,031	0.4%
VARIOUS	2	5.8%	0	0	$454,335	2.2%
Sub Total	10	29.4%	0	0	$9,080,026	44.9%
NATURAL FORCE DAMAGE
EARTH MOVEMENT	3	8.8%	0	0	$1,861,601	9.2%
Sub Total	3	8.8%	0	0	$1,861,601	9.2%
OTHER OUTSIDE FORCE DAMAGE
FIRE/EXPLOSION AS PRIMARY CAUSE	1	2.9%	0	0	$101	0.0%
RUPTURE OF PREVIOUSLY DAMAGED PIPE	1	2.9%	0	0	$4,250,044	21.0%
Sub Total	2	5.8%	0	0	$4,250,145	21.0%
ALL OTHER CAUSES
VARIOUS	8	23.5%	0	0	$1,208,967	5.9%
Sub Total	8	23.5%	0	0	$1,208,967	5.9%
Totals	34	100.0%	2	0	$20,223,294	100.0%

No Data Available

• All Gas Transmission Systems
• Onshore Only
• Offshore Only

Minnesota Gas Transmission: Significant Incident Details: 1998-2008 YTD

Reported Cause of Incident	Number	%	Fatalities	Injuries	Property Damage (B) (C)	% of Property Damage
CORROSION
CORROSION, EXTERNAL	1	12.5%	0	0	$1,790,089	34.3%
VARIOUS	1	12.5%	0	0	$151,278	2.9%
Sub Total	2	25.0%	0	0	$1,941,368	37.2%
EXCAVATION DAMAGE
THIRD PARTY EXCAVATION DAMAGE	1	12.5%	0	0	$296,330	5.6%
Sub Total	1	12.5%	0	0	$296,330	5.6%
HUMAN ERROR
INCORRECT OPERATION	1	12.5%	0	0	$111,553	2.1%
Sub Total	1	12.5%	0	0	$111,553	2.1%
NATURAL FORCE DAMAGE
EARTH MOVEMENT	1	12.5%	0	0	$530,000	10.1%
Sub Total	1	12.5%	0	0	$530,000	10.1%
OTHER OUTSIDE FORCE DAMAGE
CAR, TRUCK OR OTHER VEHICLE NOT RELATED TO...	1	12.5%	0	0	$114,690	2.2%
Sub Total	1	12.5%	0	0	$114,690	2.2%
ALL OTHER CAUSES
UNKNOWN	1	12.5%	0	0	$510,980	9.7%
VARIOUS	1	12.5%	0	0	$1,713,899	32.8%
Sub Total	2	25.0%	0	0	$2,224,879	42.6%
Totals	8	100.0%	0	0	$5,218,822	100.0%

Minnesota Gas Transmission Onshore: Significant Incident Details: 1998-2008 YTD

Reported Cause of Incident	Number	%	Fatalities	Injuries	Property Damage (B) (C)	% of Property Damage
CORROSION
CORROSION, EXTERNAL	1	12.5%	0	0	$1,790,089	34.3%
VARIOUS	1	12.5%	0	0	$151,278	2.9%
Sub Total	2	25.0%	0	0	$1,941,368	37.2%
EXCAVATION DAMAGE
THIRD PARTY EXCAVATION DAMAGE	1	12.5%	0	0	$296,330	5.6%
Sub Total	1	12.5%	0	0	$296,330	5.6%
HUMAN ERROR
INCORRECT OPERATION	1	12.5%	0	0	$111,553	2.1%
Sub Total	1	12.5%	0	0	$111,553	2.1%
NATURAL FORCE DAMAGE
EARTH MOVEMENT	1	12.5%	0	0	$530,000	10.1%
Sub Total	1	12.5%	0	0	$530,000	10.1%
OTHER OUTSIDE FORCE DAMAGE
CAR, TRUCK OR OTHER VEHICLE NOT RELATED TO...	1	12.5%	0	0	$114,690	2.2%
Sub Total	1	12.5%	0	0	$114,690	2.2%
ALL OTHER CAUSES
UNKNOWN	1	12.5%	0	0	$510,980	9.7%
VARIOUS	1	12.5%	0	0	$1,713,899	32.8%
Sub Total	2	25.0%	0	0	$2,224,879	42.6%
Totals	8	100.0%	0	0	$5,218,822	100.0%

No Data Available

No Data Available

Minnesota Gas Distribution: Significant Incident Details: 1998-2008 YTD

Reported Cause of Incident	Number	%	Fatalities	Injuries	Property Damage (B) (C)	% of Property Damage
EXCAVATION DAMAGE
VARIOUS	4	17.3%	4	2	$6,828,906	52.4%
Sub Total	4	17.3%	4	2	$6,828,906	52.4%
HUMAN ERROR
INCORRECT OPERATION	1	4.3%	0	2	$1,000	0.0%
Sub Total	1	4.3%	0	2	$1,000	0.0%
MATERIAL FAILURE
VARIOUS	1	4.3%	0	1	$1,172,700	9.0%
Sub Total	1	4.3%	0	1	$1,172,700	9.0%
NATURAL FORCE DAMAGE
EARTH MOVEMENT	2	8.7%	0	3	$282,995	2.1%
LIGHTNING	1	4.3%	0	0	$151,000	1.1%
TEMPERATURE	2	8.7%	3	1	$428,058	3.2%
VARIOUS	4	17.3%	0	1	$2,009,443	15.4%
Sub Total	9	39.1%	3	5	$2,871,497	22.0%
OTHER OUTSIDE FORCE DAMAGE
CAR, TRUCK OR OTHER VEHICLE NOT RELATED TO...	1	4.3%	0	0	$183,952	1.4%
RUPTURE OF PREVIOUSLY DAMAGED PIPE	1	4.3%	0	0	$563,167	4.3%
Sub Total	2	8.7%	0	0	$747,120	5.7%
ALL OTHER CAUSES
MISCELLANEOUS	1	4.3%	0	1	$164,029	1.2%
UNKNOWN	2	8.7%	0	0	$725,000	5.5%
VARIOUS	3	13.0%	0	1	$522,932	4.0%
Sub Total	6	26.0%	0	2	$1,411,961	10.8%
Totals	23	100.0%	7	12	$13,033,185	100.0%

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. Costs in the current year (2008) are nominal (as reported). The costs for incidents prior to 2008 are presented in 2007 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.
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. All costs prior to 2008 are expressed in 2007 dollars. Costs in current year (2008) are nominal.

Sources

1. PHMSA Hazardous Liquid Filtered Incidents File - October 14, 2008
2. PHMSA Gas Transmission Filtered Incidents File - October 14, 2008
3. PHMSA Gas Distribution Filtered Incidents File - October 14, 2008

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