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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 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

National All Pipeline Systems: Significant Incident Details: 1999

Reported Cause of Incident	Number	%	Fatalities	Injuries	Property Damage (B) (C)	% of Property Damage
CORROSION
VARIOUS	40	14.5%	1	7	$8,573,842	5.6%
Sub Total	40	14.5%	1	7	$8,573,842	5.6%
EXCAVATION DAMAGE
VARIOUS	76	27.6%	17	33	$36,761,112	24.0%
Sub Total	76	27.6%	17	33	$36,761,112	24.0%
HUMAN ERROR
VARIOUS	19	6.9%	0	12	$3,953,684	2.5%
Sub Total	19	6.9%	0	12	$3,953,684	2.5%
MATERIAL FAILURE
VARIOUS	36	13.0%	0	7	$18,697,518	12.2%
Sub Total	36	13.0%	0	7	$18,697,518	12.2%
NATURAL FORCE DAMAGE
VARIOUS	14	5.0%	0	10	$7,067,066	4.6%
Sub Total	14	5.0%	0	10	$7,067,066	4.6%
ALL OTHER CAUSES
VARIOUS	90	32.7%	4	39	$77,967,533	50.9%
Sub Total	90	32.7%	4	39	$77,967,533	50.9%
Totals	275	100.0%	22	108	$153,020,758	100.0%

• All Hazardous Liquid Systems
• Onshore Only
• Offshore Only

National Hazardous Liquid: Significant Incident Details: 1999

Reported Cause of Incident	Number	%	Fatalities	Injuries	Property Damage (B) (C)	% of Property Damage
CORROSION
VARIOUS	24	16.3%	0	2	$3,220,004	3.1%
Sub Total	24	16.3%	0	2	$3,220,004	3.1%
EXCAVATION DAMAGE
VARIOUS	25	17.0%	1	0	$13,012,639	12.7%
Sub Total	25	17.0%	1	0	$13,012,639	12.7%
HUMAN ERROR
VARIOUS	14	9.5%	0	4	$3,860,366	3.7%
Sub Total	14	9.5%	0	4	$3,860,366	3.7%
MATERIAL FAILURE
VARIOUS	22	14.9%	0	0	$9,838,500	9.6%
Sub Total	22	14.9%	0	0	$9,838,500	9.6%
NATURAL FORCE DAMAGE
VARIOUS	2	1.3%	0	0	$352,934	0.3%
Sub Total	2	1.3%	0	0	$352,934	0.3%
ALL OTHER CAUSES
VARIOUS	60	40.8%	3	14	$72,170,987	70.4%
Sub Total	60	40.8%	3	14	$72,170,987	70.4%
Totals	147	100.0%	4	20	$102,455,432	100.0%

National Hazardous Liquid Onshore: Significant Incident Details: 1999

Reported Cause of Incident	Number	%	Fatalities	Injuries	Property Damage (B) (C)	% of Property Damage
CORROSION
VARIOUS	24	16.3%	0	2	$3,220,004	3.1%
Sub Total	24	16.3%	0	2	$3,220,004	3.1%
EXCAVATION DAMAGE
VARIOUS	24	16.3%	1	0	$11,816,250	11.5%
Sub Total	24	16.3%	1	0	$11,816,250	11.5%
HUMAN ERROR
VARIOUS	14	9.5%	0	4	$3,860,366	3.7%
Sub Total	14	9.5%	0	4	$3,860,366	3.7%
MATERIAL FAILURE
VARIOUS	21	14.2%	0	0	$6,010,057	5.8%
Sub Total	21	14.2%	0	0	$6,010,057	5.8%
NATURAL FORCE DAMAGE
VARIOUS	2	1.3%	0	0	$352,934	0.3%
Sub Total	2	1.3%	0	0	$352,934	0.3%
ALL OTHER CAUSES
VARIOUS	56	38.1%	3	14	$71,120,558	69.4%
Sub Total	56	38.1%	3	14	$71,120,558	69.4%
Totals	141	95.9%	4	20	$96,380,171	94.0%

National Hazardous Liquid Offshore: Significant Incident Details: 1999

Reported Cause of Incident	Number	%	Fatalities	Injuries	Property Damage (B) (C)	% of Property Damage
EXCAVATION DAMAGE
VARIOUS	1	0.6%	0	0	$1,196,388	1.1%
Sub Total	1	0.6%	0	0	$1,196,388	1.1%
MATERIAL FAILURE
VARIOUS	1	0.6%	0	0	$3,828,443	3.7%
Sub Total	1	0.6%	0	0	$3,828,443	3.7%
ALL OTHER CAUSES
VARIOUS	4	2.7%	0	0	$1,050,429	1.0%
Sub Total	4	2.7%	0	0	$1,050,429	1.0%
Totals	6	4.0%	0	0	$6,075,260	5.9%

• All Gas Transmission Systems
• Onshore Only
• Offshore Only

National Gas Transmission: Significant Incident Details: 1999

Reported Cause of Incident	Number	%	Fatalities	Injuries	Property Damage (B) (C)	% of Property Damage
CORROSION
VARIOUS	8	21.0%	0	0	$4,044,989	19.9%
Sub Total	8	21.0%	0	0	$4,044,989	19.9%
EXCAVATION DAMAGE
VARIOUS	11	28.9%	1	2	$1,592,732	7.8%
Sub Total	11	28.9%	1	2	$1,592,732	7.8%
MATERIAL FAILURE
VARIOUS	6	15.7%	0	0	$7,818,159	38.4%
Sub Total	6	15.7%	0	0	$7,818,159	38.4%
NATURAL FORCE DAMAGE
VARIOUS	3	7.8%	0	0	$5,177,969	25.4%
Sub Total	3	7.8%	0	0	$5,177,969	25.4%
ALL OTHER CAUSES
VARIOUS	10	26.3%	1	6	$1,693,787	8.3%
Sub Total	10	26.3%	1	6	$1,693,787	8.3%
Totals	38	100.0%	2	8	$20,327,638	100.0%

National Gas Transmission Onshore: Significant Incident Details: 1999

Reported Cause of Incident	Number	%	Fatalities	Injuries	Property Damage (B) (C)	% of Property Damage
CORROSION
VARIOUS	5	13.1%	0	0	$3,267,336	16.0%
Sub Total	5	13.1%	0	0	$3,267,336	16.0%
EXCAVATION DAMAGE
VARIOUS	10	26.3%	1	2	$1,413,274	6.9%
Sub Total	10	26.3%	1	2	$1,413,274	6.9%
MATERIAL FAILURE
VARIOUS	6	15.7%	0	0	$7,818,159	38.4%
Sub Total	6	15.7%	0	0	$7,818,159	38.4%
NATURAL FORCE DAMAGE
VARIOUS	3	7.8%	0	0	$5,177,969	25.4%
Sub Total	3	7.8%	0	0	$5,177,969	25.4%
ALL OTHER CAUSES
VARIOUS	10	26.3%	1	6	$1,693,787	8.3%
Sub Total	10	26.3%	1	6	$1,693,787	8.3%
Totals	34	89.4%	2	8	$19,370,527	95.2%

National Gas Transmission Offshore: Significant Incident Details: 1999

Reported Cause of Incident	Number	%	Fatalities	Injuries	Property Damage (B) (C)	% of Property Damage
CORROSION
VARIOUS	3	7.8%	0	0	$777,652	3.8%
Sub Total	3	7.8%	0	0	$777,652	3.8%
EXCAVATION DAMAGE
VARIOUS	1	2.6%	0	0	$179,458	0.8%
Sub Total	1	2.6%	0	0	$179,458	0.8%
Totals	4	10.5%	0	0	$957,110	4.7%

National Gas Gathering: Significant Incident Details: 1999

Reported Cause of Incident	Number	%	Fatalities	Injuries	Property Damage (B) (C)	% of Property Damage
CORROSION
VARIOUS	1	50.0%	0	0	$299,097	77.0%
Sub Total	1	50.0%	0	0	$299,097	77.0%
ALL OTHER CAUSES
VARIOUS	1	50.0%	0	0	$88,876	22.9%
Sub Total	1	50.0%	0	0	$88,876	22.9%
Totals	2	100.0%	0	0	$387,973	100.0%

National Gas Distribution: Significant Incident Details: 1999

Reported Cause of Incident	Number	%	Fatalities	Injuries	Property Damage (B) (C)	% of Property Damage
CORROSION
VARIOUS	7	7.9%	1	5	$1,009,751	3.3%
Sub Total	7	7.9%	1	5	$1,009,751	3.3%
EXCAVATION DAMAGE
VARIOUS	40	45.4%	15	31	$22,155,740	74.2%
Sub Total	40	45.4%	15	31	$22,155,740	74.2%
HUMAN ERROR
VARIOUS	5	5.6%	0	8	$93,318	0.3%
Sub Total	5	5.6%	0	8	$93,318	0.3%
MATERIAL FAILURE
VARIOUS	8	9.0%	0	7	$1,040,857	3.4%
Sub Total	8	9.0%	0	7	$1,040,857	3.4%
NATURAL FORCE DAMAGE
VARIOUS	9	10.2%	0	10	$1,536,162	5.1%
Sub Total	9	10.2%	0	10	$1,536,162	5.1%
ALL OTHER CAUSES
VARIOUS	19	21.5%	0	19	$4,013,883	13.4%
Sub Total	19	21.5%	0	19	$4,013,883	13.4%
Totals	88	100.0%	16	80	$29,849,714	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.