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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: 1988-2008

Reported Cause of Incident (B)	Number	%	Fatalities	Injuries	Property Damage (C) (D)	% of Property Damage
CORROSION
CORROSION, EXTERNAL	194	3.2%	3	24	$222,952,424	5.8%
CORROSION, INTERNAL	189	3.1%	0	1	$77,797,389	2.0%
VARIOUS	708	11.7%	27	75	$262,693,045	6.8%
Sub Total	1,091	18.0%	30	100	$563,442,859	14.7%
EXCAVATION DAMAGE
OPERATOR EXCAVATION DAMAGE	51	0.8%	1	10	$12,167,636	0.3%
THIRD PARTY EXCAVATION DAMAGE	251	4.1%	18	44	$85,273,417	2.2%
VARIOUS	1,262	20.8%	128	570	$425,474,054	11.1%
Sub Total	1,564	25.8%	147	624	$522,915,108	13.6%
HUMAN ERROR
INCORRECT OPERATION	96	1.5%	9	31	$21,943,030	0.5%
VARIOUS	231	3.8%	4	120	$30,411,428	0.7%
Sub Total	327	5.4%	13	151	$52,354,459	1.3%
MATERIAL FAILURE
BODY OF PIPE	44	0.7%	0	6	$27,336,031	0.7%
BUTT WELD	37	0.6%	0	0	$34,309,072	0.9%
COMPONENT	71	1.1%	0	4	$37,456,098	0.9%
FILLET WELD	19	0.3%	0	0	$22,423,108	0.5%
JOINT	38	0.6%	2	1	$9,852,523	0.2%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT	65	1.0%	0	2	$9,258,997	0.2%
PIPE SEAM WELD	50	0.8%	0	0	$61,781,726	1.6%
RUPTURED OR LEAKING SEAL/PUMP PACKING	54	0.8%	0	1	$20,322,615	0.5%
THREADS STRIPPED, BROKEN PIPE COUPLING	36	0.6%	0	4	$7,327,776	0.1%
VARIOUS	517	8.5%	8	121	$251,795,764	6.5%
Sub Total	931	15.4%	10	139	$481,863,715	12.5%
NATURAL FORCE DAMAGE
EARTH MOVEMENT	38	0.6%	0	(E) 5	$246,162,301	6.4%
HEAVY RAINS/FLOODS	88	1.4%	0	(E) 1	$716,542,273	18.7%
HIGH WINDS	29	0.4%	1	(E) 3	$248,954,944	6.5%
LIGHTNING	26	0.4%	4	(E) 1	$25,372,178	0.6%
TEMPERATURE	15	0.2%	3	(E) 1	$7,852,495	0.2%
VARIOUS	318	5.2%	24	(E) 109	$186,414,894	4.8%
Sub Total	514	8.5%	32	120	$1,431,299,087	37.4%
OTHER OUTSIDE FORCE DAMAGE
CAR, TRUCK OR OTHER VEHICLE NOT RELATED TO...	106	1.7%	8	28	$75,324,297	1.9%
FIRE/EXPLOSION AS PRIMARY CAUSE	110	1.8%	3	13	$48,644,701	1.2%
RUPTURE OF PREVIOUSLY DAMAGED PIPE	16	0.2%	0	1	$23,614,939	0.6%
VANDALISM	12	0.2%	3	7	$1,625,641	0.0%
Sub Total	244	4.0%	14	49	$149,209,579	3.9%
ALL OTHER CAUSES
MISCELLANEOUS	134	2.2%	3	25	$45,344,739	1.1%
UNKNOWN	113	1.8%	22	60	$145,376,797	3.8%
VARIOUS	1,124	18.6%	156	537	$434,272,839	11.3%
Sub Total	1,371	22.6%	181	622	$624,994,375	16.3%
Totals	6,042	100.0%	427	1,805	$3,826,079,185	100.0%

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Source Data

Year	ALL OTHER CAUSES	NATURAL FORCE DAMAGE	HUMAN ERROR	EXCAVATION DAMAGE	OTHER OUTSIDE FORCE DAMAGE	CORROSION	MATERIAL FAILURE
1988	96	18	14	97	0	58	37
1989	76	19	17	92	0	41	32
1990	62	20	14	75	0	40	42
1991	54	20	15	92	0	60	38
1992	80	16	14	89	0	42	43
1993	78	24	18	89	0	44	40
1994	87	40	16	75	0	54	54
1995	55	26	30	76	0	38	34
1996	75	15	16	97	0	63	35
1997	78	18	13	72	0	59	27
1998	76	25	12	87	0	56	39
1999	90	14	19	76	0	40	36
2000	95	12	13	81	0	58	31
2001	59	14	12	80	0	50	18
2002	38	21	15	55	10	57	62
2003	48	28	15	81	13	47	64
2004	36	46	13	68	39	65	63
2005	37	76	19	45	55	53	74
2006	50	11	10	42	42	56	61
2007	50	17	12	57	33	66	49
2008	51	34	20	38	52	44	52

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• All Hazardous Liquid Systems
• Onshore Only
• Offshore Only

National Hazardous Liquid: Significant Incident Details: 1988-2008

Reported Cause of Incident (B)	Number	%	Fatalities	Injuries	Property Damage (C) (D)	% of Property Damage
CORROSION
CORROSION, EXTERNAL	121	4.0%	0	15	$75,212,584	4.8%
CORROSION, INTERNAL	86	2.8%	0	0	$15,796,598	1.0%
VARIOUS	494	16.6%	1	2	$202,938,067	13.0%
Sub Total	701	23.5%	1	17	$293,947,249	18.9%
EXCAVATION DAMAGE
OPERATOR EXCAVATION DAMAGE	32	1.0%	0	1	$9,510,209	0.6%
THIRD PARTY EXCAVATION DAMAGE	92	3.0%	5	6	$36,305,728	2.3%
VARIOUS	517	17.3%	9	80	$178,653,319	11.5%
Sub Total	641	21.5%	14	87	$224,469,256	14.4%
HUMAN ERROR
INCORRECT OPERATION	55	1.8%	5	4	$14,192,905	0.9%
VARIOUS	157	5.2%	1	23	$27,177,100	1.7%
Sub Total	212	7.1%	6	27	$41,370,006	2.6%
MATERIAL FAILURE
BODY OF PIPE	20	0.6%	0	0	$14,068,113	0.9%
BUTT WELD	17	0.5%	0	0	$21,417,728	1.3%
COMPONENT	44	1.4%	0	1	$22,297,645	1.4%
FILLET WELD	14	0.4%	0	0	$20,216,887	1.3%
JOINT	18	0.6%	0	0	$4,585,538	0.3%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT	37	1.2%	0	0	$2,059,629	0.1%
PIPE SEAM WELD	36	1.2%	0	0	$57,759,456	3.7%
RUPTURED OR LEAKING SEAL/PUMP PACKING	49	1.6%	0	0	$8,716,884	0.5%
THREADS STRIPPED, BROKEN PIPE COUPLING	26	0.8%	0	0	$2,827,336	0.1%
VARIOUS	334	11.2%	0	3	$193,243,649	12.4%
Sub Total	595	20.0%	0	4	$347,192,870	22.3%
NATURAL FORCE DAMAGE
EARTH MOVEMENT	12	0.4%	0	(E) 0	$60,201,401	3.8%
HEAVY RAINS/FLOODS	11	0.3%	0	(E) 0	$52,797,644	3.4%
HIGH WINDS	12	0.4%	0	(E) 0	$71,475,008	4.6%
LIGHTNING	19	0.6%	0	(E) 0	$23,291,364	1.5%
TEMPERATURE	10	0.3%	0	(E) 0	$6,991,170	0.4%
VARIOUS	58	1.9%	0	(E) 1	$78,679,361	5.0%
Sub Total	122	4.1%	0	1	$293,435,949	18.9%
OTHER OUTSIDE FORCE DAMAGE
CAR, TRUCK OR OTHER VEHICLE NOT RELATED TO...	15	0.5%	1	0	$24,880,665	1.6%
FIRE/EXPLOSION AS PRIMARY CAUSE	5	0.1%	0	0	$3,057,021	0.2%
RUPTURE OF PREVIOUSLY DAMAGED PIPE	8	0.2%	0	0	$16,392,073	1.0%
VANDALISM	6	0.2%	0	1	$994,831	0.0%
Sub Total	34	1.1%	1	1	$45,324,593	2.9%
ALL OTHER CAUSES
MISCELLANEOUS	61	2.0%	0	1	$13,182,549	0.8%
UNKNOWN	23	0.7%	3	8	$73,661,374	4.7%
VARIOUS	584	19.6%	18	88	$220,014,493	14.1%
Sub Total	668	22.4%	21	97	$306,858,417	19.7%
Totals	2,973	100.0%	43	234	$1,552,598,344	100.0%

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Source Data

Year	ALL OTHER CAUSES	NATURAL FORCE DAMAGE	HUMAN ERROR	EXCAVATION DAMAGE	OTHER OUTSIDE FORCE DAMAGE	CORROSION	MATERIAL FAILURE
1988	39	1	12	50	0	45	20
1989	31	3	11	41	0	27	23
1990	41	2	10	34	0	27	26
1991	30	5	11	42	0	47	31
1992	46	1	11	49	0	34	29
1993	39	5	11	47	0	28	24
1994	54	13	9	29	0	30	43
1995	33	10	24	35	0	32	22
1996	44	2	10	42	0	53	23
1997	46	4	10	36	0	46	20
1998	39	7	6	32	0	34	22
1999	60	2	14	25	0	24	22
2000	40	0	9	34	0	31	21
2001	36	3	9	21	0	33	6
2002	13	5	8	24	5	36	42
2003	13	7	7	18	5	29	41
2004	12	16	4	23	6	36	37
2005	12	17	9	12	6	28	44
2006	13	5	5	13	6	32	34
2007	16	8	9	17	4	23	29
2008	11	6	13	17	2	26	36

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National Hazardous Liquid Onshore: Significant Incident Details: 1988-2008

Reported Cause of Incident (B)	Number	%	Fatalities	Injuries	Property Damage (C) (D)	% of Property Damage
CORROSION
CORROSION, EXTERNAL	118	3.9%	0	15	$74,082,206	4.7%
CORROSION, INTERNAL	86	2.8%	0	0	$15,796,598	1.0%
VARIOUS	479	16.1%	1	2	$199,541,727	12.8%
Sub Total	683	22.9%	1	17	$289,420,531	18.6%
EXCAVATION DAMAGE
OPERATOR EXCAVATION DAMAGE	32	1.0%	0	1	$9,510,209	0.6%
THIRD PARTY EXCAVATION DAMAGE	92	3.0%	5	6	$36,305,728	2.3%
VARIOUS	499	16.7%	9	80	$144,415,355	9.3%
Sub Total	623	20.9%	14	87	$190,231,292	12.2%
HUMAN ERROR
INCORRECT OPERATION	55	1.8%	5	4	$14,192,905	0.9%
VARIOUS	157	5.2%	1	23	$27,177,100	1.7%
Sub Total	212	7.1%	6	27	$41,370,006	2.6%
MATERIAL FAILURE
BODY OF PIPE	20	0.6%	0	0	$14,068,113	0.9%
BUTT WELD	17	0.5%	0	0	$21,417,728	1.3%
COMPONENT	42	1.4%	0	1	$9,159,086	0.5%
FILLET WELD	14	0.4%	0	0	$20,216,887	1.3%
JOINT	18	0.6%	0	0	$4,585,538	0.3%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT	37	1.2%	0	0	$2,059,629	0.1%
PIPE SEAM WELD	36	1.2%	0	0	$57,759,456	3.7%
RUPTURED OR LEAKING SEAL/PUMP PACKING	48	1.6%	0	0	$8,165,746	0.5%
THREADS STRIPPED, BROKEN PIPE COUPLING	26	0.8%	0	0	$2,827,336	0.1%
VARIOUS	331	11.1%	0	3	$188,607,417	12.1%
Sub Total	589	19.8%	0	4	$328,866,941	21.1%
NATURAL FORCE DAMAGE
EARTH MOVEMENT	10	0.3%	0	(E) 0	$26,956,497	1.7%
HEAVY RAINS/FLOODS	9	0.3%	0	(E) 0	$42,328,612	2.7%
HIGH WINDS	2	0.0%	0	(E) 0	$15,995,479	1.0%
LIGHTNING	19	0.6%	0	(E) 0	$23,291,364	1.5%
TEMPERATURE	10	0.3%	0	(E) 0	$6,991,170	0.4%
VARIOUS	53	1.7%	0	(E) 1	$63,786,396	4.1%
Sub Total	103	3.4%	0	1	$179,349,519	11.5%
OTHER OUTSIDE FORCE DAMAGE
CAR, TRUCK OR OTHER VEHICLE NOT RELATED TO...	11	0.3%	1	0	$15,089,624	0.9%
FIRE/EXPLOSION AS PRIMARY CAUSE	5	0.1%	0	0	$3,057,021	0.2%
RUPTURE OF PREVIOUSLY DAMAGED PIPE	8	0.2%	0	0	$16,392,073	1.0%
VANDALISM	6	0.2%	0	1	$994,831	0.0%
Sub Total	30	1.0%	1	1	$35,533,552	2.2%
ALL OTHER CAUSES
MISCELLANEOUS	59	1.9%	0	1	$12,338,684	0.7%
UNKNOWN	20	0.6%	3	8	$53,648,774	3.4%
VARIOUS	567	19.0%	18	88	$208,470,486	13.4%
Sub Total	646	21.7%	21	97	$274,457,946	17.6%
Totals	2,886	97.0%	43	234	$1,339,229,791	86.2%

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Source Data

Year	ALL OTHER CAUSES	NATURAL FORCE DAMAGE	HUMAN ERROR	EXCAVATION DAMAGE	OTHER OUTSIDE FORCE DAMAGE	CORROSION	MATERIAL FAILURE
1988	39	1	12	48	0	45	19
1989	31	3	11	40	0	27	23
1990	39	2	10	33	0	27	26
1991	30	5	11	41	0	47	31
1992	45	0	11	46	0	34	29
1993	39	5	11	46	0	27	24
1994	54	12	9	29	0	29	43
1995	32	10	24	34	0	32	22
1996	43	2	10	42	0	51	23
1997	43	4	10	33	0	44	19
1998	38	4	6	30	0	31	22
1999	56	2	14	24	0	24	21
2000	37	0	9	32	0	29	21
2001	35	3	9	21	0	30	6
2002	13	5	8	24	4	33	42
2003	13	7	7	18	5	29	41
2004	11	10	4	23	5	36	35
2005	11	11	9	12	5	28	43
2006	12	4	5	13	5	32	34
2007	15	8	9	17	4	22	29
2008	10	5	13	17	2	26	36

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National Hazardous Liquid Offshore: Significant Incident Details: 1988-2008

Reported Cause of Incident (B)	Number	%	Fatalities	Injuries	Property Damage (C) (D)	% of Property Damage
CORROSION
CORROSION, EXTERNAL	3	0.1%	0	0	$1,130,377	0.0%
VARIOUS	15	0.5%	0	0	$3,396,340	0.2%
Sub Total	18	0.6%	0	0	$4,526,718	0.2%
EXCAVATION DAMAGE
VARIOUS	18	0.6%	0	0	$34,237,963	2.2%
Sub Total	18	0.6%	0	0	$34,237,963	2.2%
MATERIAL FAILURE
COMPONENT	2	0.0%	0	0	$13,138,559	0.8%
RUPTURED OR LEAKING SEAL/PUMP PACKING	1	0.0%	0	0	$551,138	0.0%
VARIOUS	3	0.1%	0	0	$4,636,231	0.3%
Sub Total	6	0.2%	0	0	$18,325,929	1.1%
NATURAL FORCE DAMAGE
EARTH MOVEMENT	2	0.0%	0	(E) 0	$33,244,903	2.1%
HEAVY RAINS/FLOODS	2	0.0%	0	(E) 0	$10,469,032	0.6%
HIGH WINDS	10	0.3%	0	(E) 0	$55,479,529	3.5%
VARIOUS	5	0.1%	0	(E) 0	$14,892,964	0.9%
Sub Total	19	0.6%	0	0	$114,086,429	7.3%
OTHER OUTSIDE FORCE DAMAGE
CAR, TRUCK OR OTHER VEHICLE NOT RELATED TO...	4	0.1%	0	0	$9,791,040	0.6%
Sub Total	4	0.1%	0	0	$9,791,040	0.6%
ALL OTHER CAUSES
MISCELLANEOUS	3	0.1%	0	0	$939,696	0.0%
UNKNOWN	3	0.1%	0	0	$20,012,599	1.2%
VARIOUS	17	0.5%	0	0	$11,544,007	0.7%
Sub Total	23	0.7%	0	0	$32,496,302	2.0%
Totals	88	2.9%	0	0	$213,464,384	13.7%

Export Table

Source Data

Year	ALL OTHER CAUSES	NATURAL FORCE DAMAGE	HUMAN ERROR	EXCAVATION DAMAGE	OTHER OUTSIDE FORCE DAMAGE	CORROSION	MATERIAL FAILURE
1988	0	0	0	2	0	0	1
1989	0	0	0	1	0	0	0
1990	2	0	0	1	0	0	0
1991	0	0	0	1	0	0	0
1992	1	1	0	3	0	0	0
1993	0	0	0	1	0	1	0
1994	0	1	0	0	0	1	0
1995	1	0	0	1	0	0	0
1996	1	0	0	0	0	2	0
1997	3	0	0	3	0	2	1
1998	1	3	0	2	0	3	0
1999	4	0	0	1	0	0	1
2000	3	0	0	2	0	2	0
2001	1	0	0	0	0	3	0
2002	1	0	0	0	1	3	0
2004	1	6	0	0	1	0	2
2005	1	6	0	0	1	0	1
2006	1	1	0	0	1	0	0
2007	1	0	0	0	0	1	0
2008	1	1	0	0	0	0	0

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• All Gas Transmission Systems
• Onshore Only
• Offshore Only

National Gas Transmission: Significant Incident Details: 1988-2008

Reported Cause of Incident (B)	Number	%	Fatalities	Injuries	Property Damage (C) (D)	% of Property Damage
CORROSION
CORROSION, EXTERNAL	56	5.0%	1	2	$144,435,285	15.0%
CORROSION, INTERNAL	70	6.3%	0	0	$43,896,048	4.5%
VARIOUS	133	12.0%	12	3	$42,743,214	4.4%
Sub Total	259	23.3%	13	5	$231,074,548	24.1%
EXCAVATION DAMAGE
OPERATOR EXCAVATION DAMAGE	12	1.0%	0	3	$1,699,177	0.1%
THIRD PARTY EXCAVATION DAMAGE	56	5.0%	6	4	$15,663,331	1.6%
VARIOUS	170	15.3%	30	69	$101,685,069	10.6%
Sub Total	238	21.4%	36	76	$119,047,577	12.4%
HUMAN ERROR
INCORRECT OPERATION	20	1.8%	0	8	$4,232,316	0.4%
Sub Total	20	1.8%	0	8	$4,232,316	0.4%
MATERIAL FAILURE
BODY OF PIPE	18	1.6%	0	0	$11,737,321	1.2%
BUTT WELD	20	1.8%	0	0	$12,891,344	1.3%
COMPONENT	18	1.6%	0	1	$7,575,570	0.7%
FILLET WELD	5	0.4%	0	0	$2,206,220	0.2%
JOINT	11	0.9%	0	0	$2,627,127	0.2%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT	21	1.9%	0	2	$5,759,973	0.6%
PIPE SEAM WELD	14	1.2%	0	0	$4,022,269	0.4%
RUPTURED OR LEAKING SEAL/PUMP PACKING	4	0.3%	0	1	$11,455,730	1.1%
THREADS STRIPPED, BROKEN PIPE COUPLING	7	0.6%	0	3	$2,816,586	0.2%
VARIOUS	83	7.4%	1	12	$45,559,121	4.7%
Sub Total	201	18.1%	1	19	$106,651,266	11.1%
NATURAL FORCE DAMAGE
EARTH MOVEMENT	9	0.8%	0	0	$7,579,305	0.7%
HEAVY RAINS/FLOODS	57	5.1%	0	0	$150,744,888	15.7%
HIGH WINDS	8	0.7%	0	0	$110,205,488	11.4%
LIGHTNING	3	0.2%	0	0	$966,664	0.1%
VARIOUS	50	4.5%	0	2	$53,928,533	5.6%
Sub Total	127	11.4%	0	2	$323,424,880	33.7%
OTHER OUTSIDE FORCE DAMAGE
CAR, TRUCK OR OTHER VEHICLE NOT RELATED TO...	32	2.8%	0	5	$34,819,315	3.6%
FIRE/EXPLOSION AS PRIMARY CAUSE	5	0.4%	0	1	$4,673,532	0.4%
RUPTURE OF PREVIOUSLY DAMAGED PIPE	4	0.3%	0	1	$3,697,854	0.3%
VANDALISM	1	0.0%	0	0	$146,416	0.0%
Sub Total	42	3.7%	0	7	$43,337,119	4.5%
ALL OTHER CAUSES
MISCELLANEOUS	41	3.7%	0	2	$19,374,139	2.0%
UNKNOWN	24	2.1%	0	2	$28,120,853	2.9%
VARIOUS	156	14.0%	9	88	$83,605,928	8.7%
Sub Total	221	19.9%	9	92	$131,100,921	13.6%
Totals	1,108	100.0%	59	209	$958,868,629	100.0%

Export Table

Source Data

Year	ALL OTHER CAUSES	NATURAL FORCE DAMAGE	HUMAN ERROR	EXCAVATION DAMAGE	OTHER OUTSIDE FORCE DAMAGE	CORROSION	MATERIAL FAILURE
1988	11	4	0	12	0	6	6
1989	13	0	0	15	0	7	5
1990	8	6	0	14	0	10	8
1991	6	2	0	12	0	7	2
1992	14	5	0	12	0	6	5
1993	19	6	0	6	0	10	9
1994	9	4	0	12	0	16	4
1995	9	6	0	8	0	2	7
1996	9	1	0	19	0	8	6
1997	6	4	0	11	0	9	3
1998	12	3	0	12	0	13	11
1999	10	3	0	11	0	8	6
2000	16	3	0	11	0	21	3
2001	14	3	0	15	0	10	8
2002	5	5	1	7	4	17	17
2003	8	2	6	11	7	16	19
2004	4	7	1	13	5	18	14
2005	11	41	3	10	9	15	21
2006	19	1	3	9	8	15	24
2007	9	3	3	10	4	34	13
2008	9	18	3	8	5	11	10

Export Table

National Gas Transmission Onshore: Significant Incident Details: 1988-2008

Reported Cause of Incident (B)	Number	%	Fatalities	Injuries	Property Damage (C) (D)	% of Property Damage
CORROSION
CORROSION, EXTERNAL	55	4.9%	1	2	$144,252,338	15.0%
CORROSION, INTERNAL	22	1.9%	0	0	$22,836,008	2.3%
VARIOUS	89	8.0%	12	3	$33,098,137	3.4%
Sub Total	166	14.9%	13	5	$200,186,484	20.8%
EXCAVATION DAMAGE
OPERATOR EXCAVATION DAMAGE	12	1.0%	0	3	$1,699,177	0.1%
THIRD PARTY EXCAVATION DAMAGE	55	4.9%	6	4	$14,102,283	1.4%
VARIOUS	136	12.2%	12	49	$67,184,805	7.0%
Sub Total	203	18.3%	18	56	$82,986,265	8.6%
HUMAN ERROR
INCORRECT OPERATION	19	1.7%	0	8	$3,545,218	0.3%
Sub Total	19	1.7%	0	8	$3,545,218	0.3%
MATERIAL FAILURE
BODY OF PIPE	17	1.5%	0	0	$11,629,318	1.2%
BUTT WELD	19	1.7%	0	0	$12,676,952	1.3%
COMPONENT	8	0.7%	0	1	$2,338,807	0.2%
FILLET WELD	5	0.4%	0	0	$2,206,220	0.2%
JOINT	8	0.7%	0	0	$1,867,438	0.1%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT	21	1.9%	0	2	$5,759,973	0.6%
PIPE SEAM WELD	14	1.2%	0	0	$4,022,269	0.4%
RUPTURED OR LEAKING SEAL/PUMP PACKING	4	0.3%	0	1	$11,455,730	1.1%
THREADS STRIPPED, BROKEN PIPE COUPLING	7	0.6%	0	3	$2,816,586	0.2%
VARIOUS	64	5.7%	1	12	$39,133,752	4.0%
Sub Total	167	15.0%	1	19	$93,907,049	9.7%
NATURAL FORCE DAMAGE
EARTH MOVEMENT	8	0.7%	0	0	$7,018,070	0.7%
HEAVY RAINS/FLOODS	11	0.9%	0	0	$7,263,935	0.7%
HIGH WINDS	4	0.3%	0	0	$78,964,959	8.2%
LIGHTNING	3	0.2%	0	0	$966,664	0.1%
VARIOUS	40	3.6%	0	2	$37,936,502	3.9%
Sub Total	66	5.9%	0	2	$132,150,133	13.7%
OTHER OUTSIDE FORCE DAMAGE
CAR, TRUCK OR OTHER VEHICLE NOT RELATED TO...	18	1.6%	0	5	$11,263,526	1.1%
FIRE/EXPLOSION AS PRIMARY CAUSE	5	0.4%	0	1	$4,673,532	0.4%
RUPTURE OF PREVIOUSLY DAMAGED PIPE	3	0.2%	0	1	$1,979,419	0.2%
VANDALISM	1	0.0%	0	0	$146,416	0.0%
Sub Total	27	2.4%	0	7	$18,062,894	1.8%
ALL OTHER CAUSES
MISCELLANEOUS	32	2.8%	0	2	$12,522,117	1.3%
UNKNOWN	17	1.5%	0	2	$26,169,534	2.7%
VARIOUS	149	13.4%	7	86	$82,295,216	8.5%
Sub Total	198	17.8%	7	90	$120,986,868	12.6%
Totals	846	76.3%	39	187	$651,824,913	67.9%

Export Table

Source Data

Year	ALL OTHER CAUSES	NATURAL FORCE DAMAGE	HUMAN ERROR	EXCAVATION DAMAGE	OTHER OUTSIDE FORCE DAMAGE	CORROSION	MATERIAL FAILURE
1988	11	2	0	9	0	4	5
1989	12	0	0	11	0	3	3
1990	7	6	0	13	0	5	5
1991	6	2	0	12	0	5	2
1992	14	2	0	8	0	5	3
1993	17	6	0	4	0	10	6
1994	9	4	0	7	0	10	4
1995	7	4	0	5	0	1	5
1996	9	0	0	16	0	6	3
1997	6	3	0	8	0	6	3
1998	12	3	0	9	0	8	8
1999	10	3	0	10	0	5	6
2000	16	3	0	10	0	13	3
2001	13	2	0	14	0	8	8
2002	3	3	1	7	2	9	15
2003	8	1	6	10	6	11	19
2004	4	2	1	13	3	6	14
2005	9	11	2	10	4	11	17
2006	11	1	3	9	6	11	19
2007	8	3	3	10	1	20	10
2008	6	5	3	8	5	9	9

Export Table

National Gas Transmission Offshore: Significant Incident Details: 1988-2008

Reported Cause of Incident (B)	Number	%	Fatalities	Injuries	Property Damage (C) (D)	% of Property Damage
CORROSION
CORROSION, EXTERNAL	1	0.0%	0	0	$182,947	0.0%
CORROSION, INTERNAL	48	4.3%	0	0	$21,060,039	2.2%
VARIOUS	44	3.9%	0	0	$9,645,077	1.0%
Sub Total	93	8.3%	0	0	$30,888,064	3.2%
EXCAVATION DAMAGE
THIRD PARTY EXCAVATION DAMAGE	1	0.0%	0	0	$1,561,047	0.1%
VARIOUS	34	3.0%	18	20	$34,500,264	3.6%
Sub Total	35	3.1%	18	20	$36,061,311	3.7%
HUMAN ERROR
INCORRECT OPERATION	1	0.0%	0	0	$687,098	0.0%
Sub Total	1	0.0%	0	0	$687,098	0.0%
MATERIAL FAILURE
BODY OF PIPE	1	0.0%	0	0	$108,003	0.0%
BUTT WELD	1	0.0%	0	0	$214,392	0.0%
COMPONENT	10	0.9%	0	0	$5,236,762	0.5%
JOINT	3	0.2%	0	0	$759,689	0.0%
VARIOUS	19	1.7%	0	0	$6,425,369	0.6%
Sub Total	34	3.0%	0	0	$12,744,216	1.3%
NATURAL FORCE DAMAGE
EARTH MOVEMENT	1	0.0%	0	0	$561,234	0.0%
HEAVY RAINS/FLOODS	46	4.1%	0	0	$143,480,952	14.9%
HIGH WINDS	4	0.3%	0	0	$31,240,528	3.2%
VARIOUS	10	0.9%	0	0	$15,992,031	1.6%
Sub Total	61	5.5%	0	0	$191,274,747	19.9%
OTHER OUTSIDE FORCE DAMAGE
CAR, TRUCK OR OTHER VEHICLE NOT RELATED TO...	14	1.2%	0	0	$23,555,789	2.4%
RUPTURE OF PREVIOUSLY DAMAGED PIPE	1	0.0%	0	0	$1,718,434	0.1%
Sub Total	15	1.3%	0	0	$25,274,224	2.6%
ALL OTHER CAUSES
MISCELLANEOUS	9	0.8%	0	0	$6,852,021	0.7%
UNKNOWN	7	0.6%	0	0	$1,951,319	0.2%
VARIOUS	7	0.6%	2	2	$1,310,711	0.1%
Sub Total	23	2.0%	2	2	$10,114,052	1.0%
Totals	262	23.6%	20	22	$307,043,716	32.0%

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Source Data

Year	ALL OTHER CAUSES	NATURAL FORCE DAMAGE	HUMAN ERROR	EXCAVATION DAMAGE	OTHER OUTSIDE FORCE DAMAGE	CORROSION	MATERIAL FAILURE
1988	0	2	0	3	0	2	1
1989	1	0	0	4	0	4	2
1990	1	0	0	1	0	5	3
1991	0	0	0	0	0	2	0
1992	0	3	0	4	0	1	2
1993	2	0	0	2	0	0	3
1994	0	0	0	5	0	6	0
1995	2	2	0	3	0	1	2
1996	0	1	0	3	0	2	3
1997	0	1	0	3	0	3	0
1998	0	0	0	3	0	5	3
1999	0	0	0	1	0	3	0
2000	0	0	0	1	0	8	0
2001	1	1	0	1	0	2	0
2002	2	2	0	0	2	8	2
2003	0	1	0	1	1	5	0
2004	0	5	0	0	2	12	0
2005	2	30	1	0	5	4	4
2006	8	0	0	0	2	4	5
2007	1	0	0	0	3	14	3
2008	3	13	0	0	0	2	1

Export Table

National Gas Gathering: Significant Incident Details: 1988-2008

Reported Cause of Incident (B)	Number	%	Fatalities	Injuries	Property Damage (C) (D)	% of Property Damage
CORROSION
CORROSION, EXTERNAL	5	4.1%	0	0	$1,877,270	0.6%
CORROSION, INTERNAL	32	26.6%	0	0	$17,667,231	5.7%
VARIOUS	23	19.1%	0	4	$7,812,676	2.5%
Sub Total	60	50.0%	0	4	$27,357,178	8.8%
EXCAVATION DAMAGE
THIRD PARTY EXCAVATION DAMAGE	1	0.8%	0	0	$109,352	0.0%
VARIOUS	12	10.0%	0	2	$11,910,530	3.8%
Sub Total	13	10.8%	0	2	$12,019,883	3.9%
HUMAN ERROR
INCORRECT OPERATION	2	1.6%	0	3	$21,870	0.0%
Sub Total	2	1.6%	0	3	$21,870	0.0%
MATERIAL FAILURE
COMPONENT	5	4.1%	0	1	$6,626,254	2.1%
JOINT	2	1.6%	0	0	$368,428	0.1%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT	1	0.8%	0	0	$89,231	0.0%
THREADS STRIPPED, BROKEN PIPE COUPLING	2	1.6%	0	0	$1,680,509	0.5%
VARIOUS	7	5.8%	0	2	$2,407,779	0.7%
Sub Total	17	14.1%	0	3	$11,172,203	3.6%
NATURAL FORCE DAMAGE
EARTH MOVEMENT	6	5.0%	0	0	$172,921,330	56.1%
HEAVY RAINS/FLOODS	3	2.5%	0	0	$838,241	0.2%
HIGH WINDS	3	2.5%	0	0	$45,097,342	14.6%
VARIOUS	1	0.8%	0	0	$417,330	0.1%
Sub Total	13	10.8%	0	0	$219,274,245	71.2%
OTHER OUTSIDE FORCE DAMAGE
CAR, TRUCK OR OTHER VEHICLE NOT RELATED TO...	2	1.6%	0	1	$2,319,187	0.7%
RUPTURE OF PREVIOUSLY DAMAGED PIPE	1	0.8%	0	0	$1,832,941	0.6%
Sub Total	3	2.5%	0	1	$4,152,128	1.3%
ALL OTHER CAUSES
MISCELLANEOUS	4	3.3%	0	0	$6,115,591	1.9%
UNKNOWN	3	2.5%	0	0	$26,613,746	8.6%
VARIOUS	5	4.1%	0	2	$1,262,676	0.4%
Sub Total	12	10.0%	0	2	$33,992,013	11.0%
Totals	120	100.0%	0	15	$307,989,523	100.0%

Export Table

Source Data

Year	ALL OTHER CAUSES	NATURAL FORCE DAMAGE	HUMAN ERROR	EXCAVATION DAMAGE	OTHER OUTSIDE FORCE DAMAGE	CORROSION	MATERIAL FAILURE
1988	1	0	0	0	0	2	0
1989	1	0	0	1	0	2	0
1990	0	0	0	0	0	0	1
1991	0	1	0	3	0	0	0
1992	1	0	0	3	0	0	2
1993	0	0	0	0	0	1	0
1994	0	0	0	1	0	4	0
1995	1	0	0	0	0	1	1
1997	0	0	0	1	0	1	1
1998	0	0	0	1	0	5	1
1999	1	0	0	0	0	1	0
2000	0	0	0	0	0	3	0
2001	0	0	0	2	0	3	1
2002	0	1	0	0	1	2	0
2003	0	0	0	0	0	2	1
2004	0	2	1	1	0	6	2
2005	0	7	1	0	1	8	1
2006	2	0	0	0	1	6	3
2007	1	0	0	0	0	8	1
2008	4	2	0	0	0	5	2

Export Table

National Gas Distribution: Significant Incident Details: 1988-2008

Reported Cause of Incident (B)	Number	%	Fatalities	Injuries	Property Damage (C) (D)	% of Property Damage
CORROSION
CORROSION, EXTERNAL	12	0.6%	2	7	$1,427,283	0.1%
CORROSION, INTERNAL	1	0.0%	0	1	$437,511	0.0%
VARIOUS	58	3.1%	14	66	$9,199,086	0.9%
Sub Total	71	3.8%	16	74	$11,063,882	1.1%
EXCAVATION DAMAGE
OPERATOR EXCAVATION DAMAGE	7	0.3%	1	6	$958,249	0.1%
THIRD PARTY EXCAVATION DAMAGE	102	5.5%	7	34	$33,195,005	3.3%
VARIOUS	563	30.5%	89	419	$133,225,136	13.2%
Sub Total	672	36.5%	97	459	$167,378,391	16.6%
HUMAN ERROR
INCORRECT OPERATION	19	1.0%	4	16	$3,495,937	0.3%
VARIOUS	74	4.0%	3	97	$3,234,327	0.3%
Sub Total	93	5.0%	7	113	$6,730,265	0.6%
MATERIAL FAILURE
BODY OF PIPE	6	0.3%	0	6	$1,530,596	0.1%
COMPONENT	4	0.2%	0	1	$956,628	0.1%
JOINT	7	0.3%	2	1	$2,271,429	0.2%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT	6	0.3%	0	0	$1,350,162	0.1%
RUPTURED OR LEAKING SEAL/PUMP PACKING	1	0.0%	0	0	$150,000	0.0%
THREADS STRIPPED, BROKEN PIPE COUPLING	1	0.0%	0	1	$3,344	0.0%
VARIOUS	93	5.0%	7	104	$10,585,214	1.0%
Sub Total	118	6.4%	9	113	$16,847,374	1.6%
NATURAL FORCE DAMAGE
EARTH MOVEMENT	11	0.6%	0	5	$5,460,263	0.5%
HEAVY RAINS/FLOODS	17	0.9%	0	1	$512,161,499	50.8%
HIGH WINDS	6	0.3%	1	3	$22,177,104	2.2%
LIGHTNING	4	0.2%	4	1	$1,114,149	0.1%
TEMPERATURE	5	0.2%	3	1	$861,325	0.0%
VARIOUS	209	11.3%	24	106	$53,389,669	5.3%
Sub Total	252	13.6%	32	117	$595,164,011	59.1%
OTHER OUTSIDE FORCE DAMAGE
CAR, TRUCK OR OTHER VEHICLE NOT RELATED TO...	57	3.1%	7	22	$13,305,128	1.3%
FIRE/EXPLOSION AS PRIMARY CAUSE	100	5.4%	3	12	$40,914,147	4.0%
RUPTURE OF PREVIOUSLY DAMAGED PIPE	3	0.1%	0	0	$1,692,069	0.1%
VANDALISM	5	0.2%	3	6	$484,393	0.0%
Sub Total	165	8.9%	13	40	$56,395,739	5.6%
ALL OTHER CAUSES
MISCELLANEOUS	28	1.5%	3	22	$6,672,458	0.6%
UNKNOWN	63	3.4%	19	50	$16,980,823	1.6%
VARIOUS	379	20.5%	129	359	$129,389,741	12.8%
Sub Total	470	25.5%	151	431	$153,043,023	15.2%
Totals	1,841	100.0%	325	1,347	$1,006,622,688	100.0%

Export Table

Source Data

Year	ALL OTHER CAUSES	NATURAL FORCE DAMAGE	HUMAN ERROR	EXCAVATION DAMAGE	OTHER OUTSIDE FORCE DAMAGE	CORROSION	MATERIAL FAILURE
1988	45	13	2	35	0	5	11
1989	31	16	6	35	0	5	4
1990	13	12	4	27	0	3	7
1991	18	12	4	35	0	6	5
1992	19	10	3	25	0	2	7
1993	20	13	7	36	0	5	7
1994	24	23	7	33	0	4	7
1995	12	10	6	33	0	3	4
1996	22	12	6	36	0	2	6
1997	26	10	3	24	0	3	3
1998	25	15	6	42	0	4	5
1999	19	9	5	40	0	7	8
2000	39	9	4	36	0	3	7
2001	9	8	3	42	0	4	3
2002	20	10	6	24	0	2	3
2003	27	19	2	52	1	0	3
2004	20	21	7	31	28	5	10
2005	14	11	6	23	39	2	8
2006	16	5	2	20	27	3	0
2007	24	6	0	30	25	1	6
2008	27	8	4	13	45	2	4

Export Table

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. 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. 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.
4. 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.
5. Does not include 1,851 injuries that required medical treatment reported for the October, 1994 accidents that were caused by severe flooding near Houston, Texas.

Sources

1. PHMSA Hazardous Liquid Filtered Incidents File - April 15, 2009
2. PHMSA Gas Transmission Filtered Incidents File - April 15, 2009
3. PHMSA Gas Distribution Filtered Incidents File - April 15, 2009

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