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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: 1999-2008

Reported Cause of Incident (C)	Number (B)	%	Fatalities	Injuries	Property Damage (D) (E)	% of Property Damage
CORROSION
CORROSION, EXTERNAL	196	7.0%	3	24	$237,186,104	7.6%
CORROSION, INTERNAL	187	6.7%	0	1	$80,614,004	2.6%
VARIOUS	153	5.4%	15	27	$77,961,703	2.5%
Sub Total	536	19.2%	18	52	$395,761,813	12.8%
EXCAVATION DAMAGE
OPERATOR EXCAVATION DAMAGE	52	1.8%	1	10	$14,393,167	0.4%
THIRD PARTY EXCAVATION DAMAGE	254	9.1%	21	46	$93,704,895	3.0%
VARIOUS	321	11.5%	34	126	$133,431,766	4.3%
Sub Total	627	22.4%	56	182	$241,529,828	7.8%
INCORRECT OPERATION
INCORRECT OPERATION	99	3.5%	7	31	$23,027,872	0.7%
VARIOUS	52	1.8%	0	32	$7,838,882	0.2%
Sub Total	151	5.4%	7	63	$30,866,755	1.0%
MAT'L/WELD/EQUIP FAILURE
BODY OF PIPE	48	1.7%	0	6	$32,932,374	1.0%
BUTT WELD	40	1.4%	0	0	$37,083,742	1.2%
COMPONENT	68	2.4%	0	4	$48,535,070	1.5%
FILLET WELD	19	0.6%	0	0	$23,301,031	0.7%
JOINT	40	1.4%	2	1	$10,828,071	0.3%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT	62	2.2%	0	2	$9,499,435	0.3%
PIPE SEAM WELD	51	1.8%	0	0	$64,807,789	2.1%
RUPTURED OR LEAKING SEAL/PUMP PACKING	56	2.0%	0	2	$21,461,053	0.6%
THREADS STRIPPED, BROKEN PIPE COUPLING	37	1.3%	0	4	$7,882,153	0.2%
VARIOUS	96	3.4%	0	23	$103,069,448	3.3%
Sub Total	517	18.5%	2	42	$359,400,170	11.6%
NATURAL FORCE DAMAGE
EARTH MOVEMENT	40	1.4%	0	5	$258,175,311	8.3%
HEAVY RAINS/FLOODS	86	3.0%	0	1	$798,579,548	25.8%
HIGH WINDS	29	1.0%	1	3	$421,852,616	13.6%
LIGHTNING	25	0.9%	4	1	$24,382,454	0.7%
TEMPERATURE	15	0.5%	3	1	$8,151,587	0.2%
VARIOUS	77	2.7%	1	33	$34,201,179	1.1%
Sub Total	272	9.7%	9	44	$1,545,342,696	50.0%
OTHER OUTSIDE FORCE DAMAGE
CAR, TRUCK OR OTHER VEHICLE NOT RELATED TO...	108	3.8%	8	28	$106,854,453	3.4%
FIRE/EXPLOSION AS PRIMARY CAUSE	10	0.3%	0	1	$8,210,047	0.2%
RUPTURE OF PREVIOUSLY DAMAGED PIPE	16	0.5%	0	1	$25,616,665	0.8%
VANDALISM	12	0.4%	3	7	$1,684,070	0.0%
Sub Total	146	5.2%	11	37	$142,365,237	4.6%
ALL OTHER CAUSES
MISCELLANEOUS	138	4.9%	3	26	$68,467,826	2.2%
UNKNOWN	102	3.6%	20	57	$144,351,342	4.6%
VARIOUS	303	10.8%	43	118	$162,099,302	5.2%
Sub Total	543	19.4%	66	201	$374,918,471	12.1%
Totals	2,792	100.0%	169	621	$3,090,184,973	100.0%

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Year	ALL OTHER CAUSES	NATURAL FORCE DAMAGE	EXCAVATION DAMAGE	INCORRECT OPERATION	OTHER OUTSIDE FORCE DAMAGE	CORROSION	MAT'L/WELD/EQUIP FAILURE
1999	90	14	76	19	0	40	36
2000	95	12	81	13	0	58	31
2001	59	14	80	12	0	50	18
2002	38	21	55	15	10	57	62
2003	48	28	82	15	13	47	64
2004	34	46	69	13	21	65	63
2005	34	78	46	19	33	53	75
2006	46	11	43	11	28	56	62
2007	51	17	57	11	17	64	51
2008	48	31	38	23	24	46	55

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• All Hazardous Liquid Systems
• Onshore Only
• Offshore Only

National 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	122	9.8%	0	15	$83,319,779	7.0%
CORROSION, INTERNAL	88	7.1%	0	0	$16,952,051	1.4%
VARIOUS	91	7.3%	0	2	$57,417,633	4.8%
Sub Total	301	24.3%	0	17	$157,689,464	13.4%
EXCAVATION DAMAGE
OPERATOR EXCAVATION DAMAGE	33	2.6%	0	1	$11,634,540	0.9%
THIRD PARTY EXCAVATION DAMAGE	92	7.4%	5	6	$39,171,718	3.3%
VARIOUS	80	6.4%	2	5	$50,973,035	4.3%
Sub Total	205	16.6%	7	12	$101,779,294	8.6%
INCORRECT OPERATION
INCORRECT OPERATION	58	4.7%	5	4	$14,960,950	1.2%
VARIOUS	32	2.5%	0	4	$7,124,630	0.6%
Sub Total	90	7.2%	5	8	$22,085,580	1.8%
MAT'L/WELD/EQUIP FAILURE
BODY OF PIPE	23	1.8%	0	0	$18,818,830	1.6%
BUTT WELD	17	1.3%	0	0	$22,233,906	1.8%
COMPONENT	42	3.4%	0	1	$22,946,286	1.9%
FILLET WELD	14	1.1%	0	0	$20,963,947	1.7%
JOINT	18	1.4%	0	0	$4,714,013	0.4%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT	34	2.7%	0	0	$1,938,329	0.1%
PIPE SEAM WELD	37	3.0%	0	0	$60,521,522	5.1%
RUPTURED OR LEAKING SEAL/PUMP PACKING	50	4.0%	0	0	$9,071,666	0.7%
THREADS STRIPPED, BROKEN PIPE COUPLING	26	2.1%	0	0	$2,928,686	0.2%
VARIOUS	51	4.1%	0	0	$86,520,467	7.3%
Sub Total	312	25.2%	0	1	$250,657,655	21.3%
NATURAL FORCE DAMAGE
EARTH MOVEMENT	12	0.9%	0	0	$62,144,917	5.2%
HEAVY RAINS/FLOODS	11	0.8%	0	0	$54,837,154	4.6%
HIGH WINDS	12	0.9%	0	0	$242,499,034	20.6%
LIGHTNING	18	1.4%	0	0	$22,247,716	1.8%
TEMPERATURE	10	0.8%	0	0	$7,256,953	0.6%
VARIOUS	5	0.4%	0	0	$516,348	0.0%
Sub Total	68	5.5%	0	0	$389,502,124	33.1%
OTHER OUTSIDE FORCE DAMAGE
CAR, TRUCK OR OTHER VEHICLE NOT RELATED TO...	15	1.2%	1	0	$26,428,652	2.2%
FIRE/EXPLOSION AS PRIMARY CAUSE	5	0.4%	0	0	$3,175,110	0.2%
RUPTURE OF PREVIOUSLY DAMAGED PIPE	8	0.6%	0	0	$18,053,924	1.5%
VANDALISM	6	0.4%	0	1	$1,033,260	0.0%
Sub Total	34	2.7%	1	1	$48,690,948	4.1%
ALL OTHER CAUSES
MISCELLANEOUS	62	5.0%	0	1	$17,713,712	1.5%
UNKNOWN	20	1.6%	3	8	$71,586,122	6.0%
VARIOUS	142	11.5%	3	23	$116,520,892	9.9%
Sub Total	224	18.1%	6	32	$205,820,728	17.5%
Totals	1,234	100.0%	19	71	$1,176,225,796	100.0%

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Year	ALL OTHER CAUSES	NATURAL FORCE DAMAGE	EXCAVATION DAMAGE	INCORRECT OPERATION	OTHER OUTSIDE FORCE DAMAGE	CORROSION	MAT'L/WELD/EQUIP FAILURE
1999	60	2	25	14	0	24	22
2000	40	0	34	9	0	31	21
2001	36	3	21	9	0	33	6
2002	13	5	24	8	5	36	42
2003	13	7	19	7	5	29	41
2004	12	16	23	4	6	36	37
2005	13	17	12	9	6	28	44
2006	12	5	13	6	6	32	32
2007	13	8	17	9	4	25	31
2008	12	5	17	15	2	27	36

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National 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	119	9.6%	0	15	$82,145,735	6.9%
CORROSION, INTERNAL	88	7.1%	0	0	$16,952,051	1.4%
VARIOUS	85	6.8%	0	2	$55,629,835	4.7%
Sub Total	292	23.6%	0	17	$154,727,622	13.1%
EXCAVATION DAMAGE
OPERATOR EXCAVATION DAMAGE	33	2.6%	0	1	$11,634,540	0.9%
THIRD PARTY EXCAVATION DAMAGE	92	7.4%	5	6	$39,171,718	3.3%
VARIOUS	77	6.2%	2	5	$29,400,856	2.5%
Sub Total	202	16.3%	7	12	$80,207,116	6.8%
INCORRECT OPERATION
INCORRECT OPERATION	58	4.7%	5	4	$14,960,950	1.2%
VARIOUS	32	2.5%	0	4	$7,124,630	0.6%
Sub Total	90	7.2%	5	8	$22,085,580	1.8%
MAT'L/WELD/EQUIP FAILURE
BODY OF PIPE	23	1.8%	0	0	$18,818,830	1.6%
BUTT WELD	17	1.3%	0	0	$22,233,906	1.8%
COMPONENT	40	3.2%	0	1	$9,300,200	0.7%
FILLET WELD	14	1.1%	0	0	$20,963,947	1.7%
JOINT	18	1.4%	0	0	$4,714,013	0.4%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT	34	2.7%	0	0	$1,938,329	0.1%
PIPE SEAM WELD	37	3.0%	0	0	$60,521,522	5.1%
RUPTURED OR LEAKING SEAL/PUMP PACKING	49	3.9%	0	0	$8,499,238	0.7%
THREADS STRIPPED, BROKEN PIPE COUPLING	26	2.1%	0	0	$2,928,686	0.2%
VARIOUS	50	4.0%	0	0	$82,544,135	7.0%
Sub Total	308	24.9%	0	1	$232,462,809	19.7%
NATURAL FORCE DAMAGE
EARTH MOVEMENT	10	0.8%	0	0	$27,886,204	2.3%
HEAVY RAINS/FLOODS	9	0.7%	0	0	$43,963,715	3.7%
HIGH WINDS	2	0.1%	0	0	$184,876,397	15.7%
LIGHTNING	18	1.4%	0	0	$22,247,716	1.8%
TEMPERATURE	10	0.8%	0	0	$7,256,953	0.6%
VARIOUS	5	0.4%	0	0	$516,348	0.0%
Sub Total	54	4.3%	0	0	$286,747,335	24.3%
OTHER OUTSIDE FORCE DAMAGE
CAR, TRUCK OR OTHER VEHICLE NOT RELATED TO...	11	0.8%	1	0	$16,259,394	1.3%
FIRE/EXPLOSION AS PRIMARY CAUSE	5	0.4%	0	0	$3,175,110	0.2%
RUPTURE OF PREVIOUSLY DAMAGED PIPE	8	0.6%	0	0	$18,053,924	1.5%
VANDALISM	6	0.4%	0	1	$1,033,260	0.0%
Sub Total	30	2.4%	1	1	$38,521,691	3.2%
ALL OTHER CAUSES
MISCELLANEOUS	60	4.8%	0	1	$16,837,250	1.4%
UNKNOWN	17	1.3%	3	8	$50,806,256	4.3%
VARIOUS	134	10.8%	3	23	$113,243,056	9.6%
Sub Total	211	17.1%	6	32	$180,886,564	15.3%
Totals	1,187	96.1%	19	71	$995,638,720	84.6%

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Source Data

Year	ALL OTHER CAUSES	NATURAL FORCE DAMAGE	EXCAVATION DAMAGE	INCORRECT OPERATION	OTHER OUTSIDE FORCE DAMAGE	CORROSION	MAT'L/WELD/EQUIP FAILURE
1999	56	2	24	14	0	24	21
2000	37	0	32	9	0	29	21
2001	35	3	21	9	0	30	6
2002	13	5	24	8	4	33	42
2003	13	7	19	7	5	29	41
2004	11	10	23	4	5	36	35
2005	12	11	12	9	5	28	43
2006	11	4	13	6	5	32	32
2007	12	8	17	9	4	24	31
2008	11	4	17	15	2	27	36

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National Hazardous Liquid Offshore: Significant Incident Details: 1999-2008

Reported Cause of Incident (C)	Number	%	Fatalities	Injuries	Property Damage (D) (E)	% of Property Damage
CORROSION
CORROSION, EXTERNAL	3	0.2%	0	0	$1,174,043	0.1%
VARIOUS	6	0.4%	0	0	$1,787,798	0.1%
Sub Total	9	0.7%	0	0	$2,961,841	0.2%
EXCAVATION DAMAGE
VARIOUS	3	0.2%	0	0	$21,572,178	1.8%
Sub Total	3	0.2%	0	0	$21,572,178	1.8%
MAT'L/WELD/EQUIP FAILURE
COMPONENT	2	0.1%	0	0	$13,646,086	1.1%
RUPTURED OR LEAKING SEAL/PUMP PACKING	1	0.0%	0	0	$572,428	0.0%
VARIOUS	1	0.0%	0	0	$3,976,331	0.3%
Sub Total	4	0.3%	0	0	$18,194,845	1.5%
NATURAL FORCE DAMAGE
EARTH MOVEMENT	2	0.1%	0	0	$34,258,712	2.9%
HEAVY RAINS/FLOODS	2	0.1%	0	0	$10,873,438	0.9%
HIGH WINDS	10	0.8%	0	0	$57,622,637	4.9%
Sub Total	14	1.1%	0	0	$102,754,788	8.7%
OTHER OUTSIDE FORCE DAMAGE
CAR, TRUCK OR OTHER VEHICLE NOT RELATED TO...	4	0.3%	0	0	$10,169,257	0.8%
Sub Total	4	0.3%	0	0	$10,169,257	0.8%
ALL OTHER CAUSES
MISCELLANEOUS	3	0.2%	0	0	$975,995	0.0%
UNKNOWN	3	0.2%	0	0	$20,779,866	1.7%
VARIOUS	8	0.6%	0	0	$3,277,836	0.2%
Sub Total	14	1.1%	0	0	$25,033,697	2.1%
Totals	48	3.8%	0	0	$180,686,608	15.3%

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Source Data

Year	ALL OTHER CAUSES	NATURAL FORCE DAMAGE	EXCAVATION DAMAGE	INCORRECT OPERATION	OTHER OUTSIDE FORCE DAMAGE	CORROSION	MAT'L/WELD/EQUIP FAILURE
1999	4	0	1	0	0	0	1
2000	3	0	2	0	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: 1999-2008

Reported Cause of Incident (C)	Number	%	Fatalities	Injuries	Property Damage (D) (E)	% of Property Damage
CORROSION
CORROSION, EXTERNAL	57	8.6%	1	2	$150,486,525	19.1%
CORROSION, INTERNAL	66	10.0%	0	0	$44,852,321	5.6%
VARIOUS	39	5.9%	12	0	$15,005,575	1.9%
Sub Total	162	24.5%	13	2	$210,344,423	26.7%
EXCAVATION DAMAGE
OPERATOR EXCAVATION DAMAGE	12	1.8%	0	3	$1,771,997	0.2%
THIRD PARTY EXCAVATION DAMAGE	56	8.4%	6	4	$16,482,884	2.0%
VARIOUS	37	5.6%	4	9	$10,746,144	1.3%
Sub Total	105	15.9%	10	16	$29,001,025	3.6%
INCORRECT OPERATION
INCORRECT OPERATION	19	2.8%	0	7	$4,427,093	0.5%
Sub Total	19	2.8%	0	7	$4,427,093	0.5%
MAT'L/WELD/EQUIP FAILURE
BODY OF PIPE	19	2.8%	0	0	$12,531,590	1.5%
BUTT WELD	22	3.3%	0	0	$14,494,336	1.8%
COMPONENT	17	2.5%	0	1	$6,955,366	0.8%
FILLET WELD	5	0.7%	0	0	$2,337,084	0.3%
JOINT	13	1.9%	0	0	$3,371,211	0.4%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT	21	3.1%	0	2	$6,086,017	0.7%
PIPE SEAM WELD	14	2.1%	0	0	$4,286,267	0.5%
RUPTURED OR LEAKING SEAL/PUMP PACKING	5	0.7%	0	2	$12,239,387	1.5%
THREADS STRIPPED, BROKEN PIPE COUPLING	8	1.2%	0	3	$3,204,563	0.4%
VARIOUS	17	2.5%	0	0	$10,274,665	1.3%
Sub Total	141	21.3%	0	8	$75,780,489	9.6%
NATURAL FORCE DAMAGE
EARTH MOVEMENT	11	1.6%	0	0	$10,764,772	1.3%
HEAVY RAINS/FLOODS	55	8.3%	0	0	$210,721,607	26.7%
HIGH WINDS	8	1.2%	0	0	$111,686,069	14.1%
LIGHTNING	3	0.4%	0	0	$998,001	0.1%
VARIOUS	9	1.3%	0	0	$7,414,667	0.9%
Sub Total	86	13.0%	0	0	$341,585,118	43.3%
OTHER OUTSIDE FORCE DAMAGE
CAR, TRUCK OR OTHER VEHICLE NOT RELATED TO...	32	4.8%	0	5	$35,900,938	4.5%
FIRE/EXPLOSION AS PRIMARY CAUSE	5	0.7%	0	1	$5,034,936	0.6%
RUPTURE OF PREVIOUSLY DAMAGED PIPE	4	0.6%	0	1	$3,898,207	0.4%
VANDALISM	1	0.1%	0	0	$157,361	0.0%
Sub Total	42	6.3%	0	7	$44,991,445	5.7%
ALL OTHER CAUSES
MISCELLANEOUS	44	6.6%	0	3	$37,527,602	4.7%
UNKNOWN	21	3.1%	0	1	$31,665,634	4.0%
VARIOUS	40	6.0%	3	20	$12,428,810	1.5%
Sub Total	105	15.9%	3	24	$81,622,047	10.3%
Totals	660	100.0%	26	64	$787,751,642	100.0%

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Source Data

Year	ALL OTHER CAUSES	NATURAL FORCE DAMAGE	EXCAVATION DAMAGE	INCORRECT OPERATION	OTHER OUTSIDE FORCE DAMAGE	CORROSION	MAT'L/WELD/EQUIP FAILURE
1999	10	3	11	0	0	8	6
2000	16	3	11	0	0	21	3
2001	14	3	15	0	0	10	8
2002	5	5	7	1	4	17	17
2003	9	2	11	6	7	16	19
2004	4	7	13	1	5	18	14
2005	9	43	10	3	9	15	22
2006	16	1	9	3	8	15	27
2007	13	3	10	2	4	30	13
2008	9	16	8	3	5	12	12

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National 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	56	8.4%	1	2	$150,291,692	19.0%
CORROSION, INTERNAL	23	3.4%	0	0	$24,944,061	3.1%
VARIOUS	26	3.9%	12	0	$12,575,853	1.6%
Sub Total	105	15.9%	13	2	$187,811,607	23.8%
EXCAVATION DAMAGE
OPERATOR EXCAVATION DAMAGE	12	1.8%	0	3	$1,771,997	0.2%
THIRD PARTY EXCAVATION DAMAGE	55	8.3%	6	4	$14,833,974	1.8%
VARIOUS	34	5.1%	4	9	$9,079,158	1.1%
Sub Total	101	15.3%	10	16	$25,685,130	3.2%
INCORRECT OPERATION
INCORRECT OPERATION	18	2.7%	0	7	$3,691,694	0.4%
Sub Total	18	2.7%	0	7	$3,691,694	0.4%
MAT'L/WELD/EQUIP FAILURE
BODY OF PIPE	18	2.7%	0	0	$12,419,414	1.5%
BUTT WELD	19	2.8%	0	0	$13,491,627	1.7%
COMPONENT	7	1.0%	0	1	$1,497,463	0.1%
FILLET WELD	5	0.7%	0	0	$2,337,084	0.3%
JOINT	10	1.5%	0	0	$2,602,145	0.3%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT	21	3.1%	0	2	$6,086,017	0.7%
PIPE SEAM WELD	14	2.1%	0	0	$4,286,267	0.5%
RUPTURED OR LEAKING SEAL/PUMP PACKING	5	0.7%	0	2	$12,239,387	1.5%
THREADS STRIPPED, BROKEN PIPE COUPLING	7	1.0%	0	3	$2,939,204	0.3%
VARIOUS	17	2.5%	0	0	$10,274,665	1.3%
Sub Total	123	18.6%	0	8	$68,173,277	8.6%
NATURAL FORCE DAMAGE
EARTH MOVEMENT	8	1.2%	0	0	$7,379,067	0.9%
HEAVY RAINS/FLOODS	11	1.6%	0	0	$78,213,020	9.9%
HIGH WINDS	4	0.6%	0	0	$78,987,415	10.0%
LIGHTNING	3	0.4%	0	0	$998,001	0.1%
VARIOUS	8	1.2%	0	0	$7,087,375	0.9%
Sub Total	34	5.1%	0	0	$172,664,880	21.9%
OTHER OUTSIDE FORCE DAMAGE
CAR, TRUCK OR OTHER VEHICLE NOT RELATED TO...	18	2.7%	0	5	$11,410,870	1.4%
FIRE/EXPLOSION AS PRIMARY CAUSE	5	0.7%	0	1	$5,034,936	0.6%
RUPTURE OF PREVIOUSLY DAMAGED PIPE	3	0.4%	0	1	$2,109,695	0.2%
VANDALISM	1	0.1%	0	0	$157,361	0.0%
Sub Total	27	4.0%	0	7	$18,712,864	2.3%
ALL OTHER CAUSES
MISCELLANEOUS	34	5.1%	0	3	$16,129,009	2.0%
UNKNOWN	13	1.9%	0	1	$29,477,042	3.7%
VARIOUS	39	5.9%	3	20	$12,131,272	1.5%
Sub Total	86	13.0%	3	24	$57,737,325	7.3%
Totals	494	74.8%	26	64	$534,476,780	67.8%

Export Table

Source Data

Year	ALL OTHER CAUSES	NATURAL FORCE DAMAGE	EXCAVATION DAMAGE	INCORRECT OPERATION	OTHER OUTSIDE FORCE DAMAGE	CORROSION	MAT'L/WELD/EQUIP FAILURE
1999	10	3	10	0	0	5	6
2000	16	3	10	0	0	13	3
2001	13	2	14	0	0	8	8
2002	3	3	7	1	2	9	15
2003	9	1	10	6	6	11	19
2004	4	2	13	1	3	6	14
2005	8	11	10	2	4	11	18
2006	9	1	9	3	6	11	21
2007	9	3	10	2	1	21	9
2008	5	5	8	3	5	10	10

Export Table

National Gas Transmission Offshore: Significant Incident Details: 1999-2008

Reported Cause of Incident (C)	Number	%	Fatalities	Injuries	Property Damage (D) (E)	% of Property Damage
CORROSION
CORROSION, EXTERNAL	1	0.1%	0	0	$194,833	0.0%
CORROSION, INTERNAL	43	6.5%	0	0	$19,908,260	2.5%
VARIOUS	13	1.9%	0	0	$2,429,721	0.3%
Sub Total	57	8.6%	0	0	$22,532,815	2.8%
EXCAVATION DAMAGE
THIRD PARTY EXCAVATION DAMAGE	1	0.1%	0	0	$1,648,909	0.2%
VARIOUS	3	0.4%	0	0	$1,666,985	0.2%
Sub Total	4	0.6%	0	0	$3,315,895	0.4%
INCORRECT OPERATION
INCORRECT OPERATION	1	0.1%	0	0	$735,398	0.0%
Sub Total	1	0.1%	0	0	$735,398	0.0%
MAT'L/WELD/EQUIP FAILURE
BODY OF PIPE	1	0.1%	0	0	$112,175	0.0%
BUTT WELD	3	0.4%	0	0	$1,002,708	0.1%
COMPONENT	10	1.5%	0	0	$5,457,902	0.6%
JOINT	3	0.4%	0	0	$769,065	0.1%
THREADS STRIPPED, BROKEN PIPE COUPLING	1	0.1%	0	0	$265,359	0.0%
Sub Total	18	2.7%	0	0	$7,607,211	0.9%
NATURAL FORCE DAMAGE
EARTH MOVEMENT	3	0.4%	0	0	$3,385,705	0.4%
HEAVY RAINS/FLOODS	44	6.6%	0	0	$132,508,586	16.8%
HIGH WINDS	4	0.6%	0	0	$32,698,653	4.1%
VARIOUS	1	0.1%	0	0	$327,291	0.0%
Sub Total	52	7.8%	0	0	$168,920,237	21.4%
OTHER OUTSIDE FORCE DAMAGE
CAR, TRUCK OR OTHER VEHICLE NOT RELATED TO...	14	2.1%	0	0	$24,490,068	3.1%
RUPTURE OF PREVIOUSLY DAMAGED PIPE	1	0.1%	0	0	$1,788,512	0.2%
Sub Total	15	2.2%	0	0	$26,278,580	3.3%
ALL OTHER CAUSES
MISCELLANEOUS	10	1.5%	0	0	$21,398,592	2.7%
UNKNOWN	8	1.2%	0	0	$2,188,591	0.2%
VARIOUS	1	0.1%	0	0	$297,537	0.0%
Sub Total	19	2.8%	0	0	$23,884,721	3.0%
Totals	166	25.1%	0	0	$253,274,861	32.1%

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Source Data

Year	ALL OTHER CAUSES	NATURAL FORCE DAMAGE	EXCAVATION DAMAGE	INCORRECT OPERATION	OTHER OUTSIDE FORCE DAMAGE	CORROSION	MAT'L/WELD/EQUIP FAILURE
1999	0	0	1	0	0	3	0
2000	0	0	1	0	0	8	0
2001	1	1	1	0	0	2	0
2002	2	2	0	0	2	8	2
2003	0	1	1	0	1	5	0
2004	0	5	0	0	2	12	0
2005	1	32	0	1	5	4	4
2006	7	0	0	0	2	4	6
2007	4	0	0	0	3	9	4
2008	4	11	0	0	0	2	2

Export Table

National Gas Gathering: Significant Incident Details: 1999-2008

Reported Cause of Incident (C)	Number	%	Fatalities	Injuries	Property Damage (D) (E)	% of Property Damage
CORROSION
CORROSION, EXTERNAL	5	5.9%	0	0	$1,894,202	0.5%
CORROSION, INTERNAL	32	38.1%	0	0	$18,355,215	5.3%
VARIOUS	7	8.3%	0	2	$3,728,687	1.0%
Sub Total	44	52.3%	0	2	$23,978,105	6.9%
EXCAVATION DAMAGE
THIRD PARTY EXCAVATION DAMAGE	1	1.1%	0	0	$113,577	0.0%
VARIOUS	2	2.3%	0	0	$9,141,069	2.6%
Sub Total	3	3.5%	0	0	$9,254,646	2.6%
INCORRECT OPERATION
INCORRECT OPERATION	2	2.3%	0	3	$22,715	0.0%
Sub Total	2	2.3%	0	3	$22,715	0.0%
MAT'L/WELD/EQUIP FAILURE
COMPONENT	5	5.9%	0	1	$17,639,812	5.1%
JOINT	2	2.3%	0	0	$383,088	0.1%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT	1	1.1%	0	0	$92,678	0.0%
THREADS STRIPPED, BROKEN PIPE COUPLING	2	2.3%	0	0	$1,745,430	0.5%
VARIOUS	1	1.1%	0	0	$115,844	0.0%
Sub Total	11	13.1%	0	1	$19,976,855	5.7%
NATURAL FORCE DAMAGE
EARTH MOVEMENT	6	7.1%	0	0	$179,634,128	52.1%
HEAVY RAINS/FLOODS	3	3.5%	0	0	$883,338	0.2%
HIGH WINDS	3	3.5%	0	0	$45,423,739	13.1%
Sub Total	12	14.2%	0	0	$225,941,206	65.5%
OTHER OUTSIDE FORCE DAMAGE
CAR, TRUCK OR OTHER VEHICLE NOT RELATED TO...	3	3.5%	0	1	$30,612,871	8.8%
RUPTURE OF PREVIOUSLY DAMAGED PIPE	1	1.1%	0	0	$1,915,017	0.5%
Sub Total	4	4.7%	0	1	$32,527,888	9.4%
ALL OTHER CAUSES
MISCELLANEOUS	4	4.7%	0	0	$6,309,585	1.8%
UNKNOWN	3	3.5%	0	0	$26,625,957	7.7%
VARIOUS	1	1.1%	0	0	$92,309	0.0%
Sub Total	8	9.5%	0	0	$33,027,851	9.5%
Totals	84	100.0%	0	7	$344,729,270	100.0%

Export Table

Source Data

Year	ALL OTHER CAUSES	NATURAL FORCE DAMAGE	EXCAVATION DAMAGE	INCORRECT OPERATION	OTHER OUTSIDE FORCE DAMAGE	CORROSION	MAT'L/WELD/EQUIP FAILURE
1999	1	0	0	0	0	1	0
2000	0	0	0	0	0	3	0
2001	0	0	2	0	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	0	1	1	8	1
2006	2	0	0	0	1	6	3
2007	1	0	0	0	0	8	1
2008	4	2	0	0	1	5	2

Export Table

National Gas Distribution: Significant Incident Details: 1999-2008

Reported Cause of Incident (C)	Number (B)	%	Fatalities	Injuries	Property Damage (D) (E)	% of Property Damage
CORROSION
CORROSION, EXTERNAL	12	1.4%	2	7	$1,485,597	0.1%
CORROSION, INTERNAL	1	0.1%	0	1	$454,416	0.0%
VARIOUS	16	1.9%	3	23	$1,809,806	0.2%
Sub Total	29	3.5%	5	31	$3,749,820	0.4%
EXCAVATION DAMAGE
OPERATOR EXCAVATION DAMAGE	7	0.8%	1	6	$986,630	0.1%
THIRD PARTY EXCAVATION DAMAGE	105	12.9%	10	36	$37,936,714	4.8%
VARIOUS	202	24.8%	28	112	$62,571,516	8.0%
Sub Total	314	38.5%	39	154	$101,494,862	12.9%
INCORRECT OPERATION
INCORRECT OPERATION	20	2.4%	2	17	$3,617,113	0.4%
VARIOUS	20	2.4%	0	28	$714,252	0.0%
Sub Total	40	4.9%	2	45	$4,331,365	0.5%
MAT'L/WELD/EQUIP FAILURE
BODY OF PIPE	6	0.7%	0	6	$1,581,954	0.2%
BUTT WELD	1	0.1%	0	0	$355,500	0.0%
COMPONENT	4	0.4%	0	1	$993,604	0.1%
JOINT	7	0.8%	2	1	$2,359,757	0.3%
MALFUNCTION OF CONTROL/RELIEF EQUIPMENT	6	0.7%	0	0	$1,382,409	0.1%
RUPTURED OR LEAKING SEAL/PUMP PACKING	1	0.1%	0	0	$150,000	0.0%
THREADS STRIPPED, BROKEN PIPE COUPLING	1	0.1%	0	1	$3,473	0.0%
VARIOUS	27	3.3%	0	23	$6,158,471	0.7%
Sub Total	53	6.5%	2	32	$12,985,170	1.6%
NATURAL FORCE DAMAGE
EARTH MOVEMENT	11	1.3%	0	5	$5,631,492	0.7%
HEAVY RAINS/FLOODS	17	2.0%	0	1	$532,137,448	68.0%
HIGH WINDS	6	0.7%	1	3	$22,243,772	2.8%
LIGHTNING	4	0.4%	4	1	$1,136,736	0.1%
TEMPERATURE	5	0.6%	3	1	$894,634	0.1%
VARIOUS	63	7.7%	1	33	$26,270,163	3.3%
Sub Total	106	13.0%	9	44	$588,314,247	75.2%
OTHER OUTSIDE FORCE DAMAGE
CAR, TRUCK OR OTHER VEHICLE NOT RELATED TO...	58	7.1%	7	22	$13,911,991	1.7%
RUPTURE OF PREVIOUSLY DAMAGED PIPE	3	0.3%	0	0	$1,749,515	0.2%
VANDALISM	5	0.6%	3	6	$493,447	0.0%
Sub Total	66	8.1%	10	28	$16,154,954	2.0%
ALL OTHER CAUSES
MISCELLANEOUS	28	3.4%	3	22	$6,916,926	0.8%
UNKNOWN	58	7.1%	17	48	$14,473,627	1.8%
VARIOUS	120	14.7%	37	75	$33,057,290	4.2%
Sub Total	206	25.3%	57	145	$54,447,843	6.9%
Totals	814	100.0%	124	479	$781,478,264	100.0%

Export Table

Source Data

Year	ALL OTHER CAUSES	NATURAL FORCE DAMAGE	EXCAVATION DAMAGE	INCORRECT OPERATION	OTHER OUTSIDE FORCE DAMAGE	CORROSION	MAT'L/WELD/EQUIP FAILURE
1999	19	9	40	5	0	7	8
2000	39	9	36	4	0	3	7
2001	9	8	42	3	0	4	3
2002	20	10	24	6	0	2	3
2003	26	19	52	2	1	0	3
2004	18	21	32	7	10	5	10
2005	12	11	24	6	17	2	8
2006	16	5	21	2	13	3	0
2007	24	6	30	0	9	1	6
2008	23	8	13	5	16	2	5

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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.