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Journalism in the Public Interest

Pipeline Safety Tracker

Find the Accidents Near You

Wyoming

129
Incidents

$4
Fatalities

$15
Injuries

$29.5M
Property Damages

28
Gas Incidents

$101
Hazardous Liquid Incidents

Read the Wyoming Pipeline profile from the US DOT

Pipeline Incidents by Cause

'86

1986

4 incidents. Causes:

Excavation Damage : 50%

All Other Causes : 50%

'87

1987

15 incidents. Causes:

Material Weld Equipment Failure : 20%

Excavation Damage : 20%

Corrosion : 7%

All Other Causes : 53%

'88

1988

4 incidents. Causes:

Material Weld Equipment Failure : 25%

Excavation Damage : 50%

Corrosion : 25%

'89

1989

1 incidents. Causes:

Incorrect Operation : 100%

'90

1990

5 incidents. Causes:

Material Weld Equipment Failure : 20%

Excavation Damage : 40%

Corrosion : 20%

All Other Causes : 20%

'91

1991

5 incidents. Causes:

Material Weld Equipment Failure : 20%

Incorrect Operation : 20%

Excavation Damage : 20%

All Other Causes : 40%

'92

1992

8 incidents. Causes:

Material Weld Equipment Failure : 13%

Excavation Damage : 25%

All Other Causes : 63%

'93

1993

7 incidents. Causes:

Material Weld Equipment Failure : 14%

Corrosion : 14%

All Other Causes : 71%

'94

1994

4 incidents. Causes:

Material Weld Equipment Failure : 50%

Corrosion : 25%

All Other Causes : 25%

'95

1995

6 incidents. Causes:

Material Weld Equipment Failure : 50%

Corrosion : 17%

All Other Causes : 33%

'96

1996

4 incidents. Causes:

Natural Force Damage : 25%

Material Weld Equipment Failure : 50%

Corrosion : 25%

'97

1997

7 incidents. Causes:

Natural Force Damage : 14%

Material Weld Equipment Failure : 29%

All Other Causes : 57%

'98

1998

5 incidents. Causes:

Material Weld Equipment Failure: 20%

Incorrect Operation : 20%

Excavation Damage : 20%

All Other Causes : 40%

'99

1999

3 incidents. Causes:

Material Weld Equipment Failure : 33%

All Other Causes : 67%

'00

2000

3 incidents. Causes:

Material Weld Equipment Failure : 33%

Excavation Damage : 33%

Corrosion : 33%

'01

2001

1 incidents. Causes:

Other Outside Force Damage : 100%

'02

2002

5 incidents. Causes:

Natural Force Damage : 20%

Material Weld Equipment Failure: 60%

Excavation Damage : 20%

'03

2003

9 incidents. Causes:

Other Outside Force Damage : 11%

Material Weld Equipment Failure: 11%

Incorrect Operation : 11%

Excavation Damage : 22%

Corrosion : 33%

All Other Causes : 11%

'04

2004

4 incidents. Causes:

Natural Force Damage : 25%

Material Weld Equipment Failure: 50%

Excavation Damage : 25%

'05

2005

7 incidents. Causes:

Other Outside Force Damage : 14%

Material Weld Equipment Failure: 29%

Excavation Damage : 14%

Corrosion : 29%

All Other Causes : 14%

'06

2006

4 incidents. Causes:

Other Outside Force Damage : 25%

Material Weld Equipment Failure : 50%

Excavation Damage : 25%

'07

2007

1 incidents. Causes:

Material Weld Equipment Failure : 100%

'08

2008

5 incidents. Causes:

Other Outside Force Damage : 40%

Material Weld Equipment Failure : 20%

Incorrect Operation : 20%

Corrosion : 20%

'09

2009

4 incidents. Causes:

Other Outside Force Damage : 25%

Incorrect Operation : 25%

Excavation Damage : 25%

Corrosion : 25%

'10

2010

1 incidents. Causes:

Incorrect Operation : 100%

'11

2011

6 incidents. Causes:

Material Weld Equipment Failure : 83%

Corrosion : 17%

'12

2012

1 incidents. Causes:

Incorrect Operation : 100%

= on the map

More on this Data

The map displays only "significant incidents," defined by PHMSA, the Pipeline and Hazardous Materials Safety Administration, as those that caused either a death or serious injury, cost more than $50,000, released more than 50 barrels of liquid, or caused a fire or explosion (see the official definition here). It includes incidents through Sept. 28, 2012. Many incidents lack sufficient location data and do not appear on the map.
Source: PHMSA

Date Operator Fatalities Injuries Property Damage Cause
July 11, 1986 Amoco Pipeline Co 0 0 $3,395 Miscellaneous Cause
Aug. 13, 1986 Calnev Pipe Line Llc 0 0 $26.8K Third Party Excavation Damage
Sept. 9, 1986 Phillips Petroleum Co 1 0 $0 Miscellaneous Cause
Oct. 1, 1986 Amoco Pipeline Co 0 0 $17.1K Third Party Excavation Damage
March 10, 1987 Amoco Oil Co 0 0 $1,306 Miscellaneous Cause
March 31, 1987 Conoco Inc (Aka Conoco Pipe Line) 0 0 $958K Unspecified Pipe Body Or Seam
April 4, 1987 Amoco Pipeline Co 0 0 $61K Internal Corrosion
April 10, 1987 Mid America Pipeline Co (Mapco) 0 0 $680 Miscellaneous Cause
May 8, 1987 Wyco Pipe Line Co 0 0 $131K Third Party Excavation Damage
May 19, 1987 Amoco Pipeline Co 0 0 $1,480 Miscellaneous Cause
June 23, 1987 Amoco Pipeline Co 0 0 $4,876 Miscellaneous Cause
Sept. 5, 1987 Northern Utilities Inc 0 1 $0 Third Party Excavation Damage
Oct. 13, 1987 Amoco Pipeline Co 0 0 $1.73M Miscellaneous Cause
Oct. 15, 1987 Mid America Pipeline Co (Mapco) 0 0 $19.3K Miscellaneous Cause
Oct. 17, 1987 Amoco Pipeline Co 0 0 $31.3K Third Party Excavation Damage
Oct. 26, 1987 Conoco Inc (Aka Conoco Pipe Line) 0 0 $261K Unspecified Pipe Body Or Seam
Nov. 6, 1987 Northwest Pipeline Corp (Wgp) 0 4 $0 Miscellaneous Cause
Nov. 11, 1987 Belle Fourche Pipeline Co 0 0 $7,837 Unspecified Pipe Body Or Seam
Nov. 26, 1987 Amoco Pipeline Co 0 0 $2,438 Miscellaneous Cause
March 15, 1988 Conoco Inc (Aka Conoco Pipe Line) 0 0 $33.8K Third Party Excavation Damage
July 16, 1988 Conoco Inc (Aka Conoco Pipe Line) 0 0 $844 External Corrosion
Sept. 30, 1988 Conoco Inc (Aka Conoco Pipe Line) 0 0 $3,377 Third Party Excavation Damage
Oct. 21, 1988 Amoco Pipeline Co 0 0 $0 Unspecified Pipe Body Or Seam
Jan. 16, 1989 Mid America Pipeline Co (Mapco) 0 3 $83.2K Unspecified Incorrect Operation
Sept. 2, 1990 Mid America Pipeline Co (Mapco) 0 0 $114K Miscellaneous Cause
Oct. 23, 1990 Conoco Inc (Aka Conoco Pipe Line) 0 0 $15.7K Operator/Contractor Excavation Damage
Dec. 23, 1990 Jackson Vangas Inc 0 0 $196K Third Party Excavation Damage
Dec. 24, 1990 Conoco Inc (Aka Conoco Pipe Line) 0 0 $7,835 Unspecified Pipe Body Or Seam
Dec. 24, 1990 Sinclair Transportation Company 0 0 $156 External Corrosion
Feb. 20, 1991 Wyco Pipe Line Co 0 0 $45.3K Miscellaneous Cause
April 7, 1991 Shell Pipeline Company Lp 0 0 $491K Unspecified Pipe Body Or Seam
April 8, 1991 Mid America Pipeline Co (Mapco) 0 0 $13.3K Operator/Contractor Excavation Damage
Oct. 2, 1991 Sinclair Transportation Company 0 0 $302 Unspecified Incorrect Operation
Dec. 5, 1991 Conoco Inc (Aka Conoco Pipe Line) 0 0 $3,776 Miscellaneous Cause
Jan. 3, 1992 Scurlock Permian Corp 0 0 $0 Miscellaneous Cause
July 9, 1992 Platte Pipe Line Co 0 0 $73.7K Third Party Excavation Damage
Oct. 12, 1992 Belle Fourche Pipeline Co 0 0 $177K Third Party Excavation Damage
Nov. 10, 1992 Conoco Inc (Aka Conoco Pipe Line) 0 0 $76.6K Unspecified Pipe Body Or Seam
Dec. 3, 1992 Platte Pipe Line Co 0 0 $36.8K Miscellaneous Cause
Dec. 11, 1992 Wbi Energy Transmission, Inc. 0 0 $221K Miscellaneous Cause
Dec. 19, 1992 Marathon Pipe Line Llc 0 0 $17.7K Miscellaneous Cause
Dec. 26, 1992 Wyco Pipe Line Co 0 0 $884 Miscellaneous Cause
Jan. 15, 1993 M I G C Inc 0 0 $144K Miscellaneous Cause
Feb. 9, 1993 Amoco Pipeline Co 0 0 $720 Internal Corrosion
Feb. 14, 1993 Wyco Pipe Line Co 0 0 $7,419 Miscellaneous Cause
Feb. 16, 1993 Marathon Pipe Line Llc 0 0 $2.16M Miscellaneous Cause
March 24, 1993 Wyco Pipe Line Co 0 0 $4,754 Malfunction Of Control/Relief Equipment
June 22, 1993 Amoco Pipeline Co 0 0 $5,330 Miscellaneous Cause
Aug. 3, 1993 Amoco Pipeline Co 0 0 $1,440 Miscellaneous Cause
Feb. 27, 1994 Amoco Pipeline Co 0 0 $705 External Corrosion
Aug. 14, 1994 Conoco Inc (Aka Conoco Pipe Line) 0 0 $0 Unspecified Weld
Aug. 16, 1994 Conoco Inc (Aka Conoco Pipe Line) 0 0 $35.3K Unspecified Pipe Body Or Seam
Nov. 30, 1994 Amoco Pipeline Co 0 0 $0 Miscellaneous Cause
March 16, 1995 Mid America Pipeline Co (Mapco) 0 0 $37.9K Miscellaneous Cause
April 4, 1995 Sinclair Transportation Company 0 0 $7,735 Unspecified Pipe Body Or Seam
April 20, 1995 Westtex 66 Pipeline Co 0 0 $16.9K External Corrosion
May 24, 1995 Sinclair Transportation Company 0 0 $104K Unspecified Pipe Body Or Seam
Aug. 23, 1995 Amoco Oil Co 0 0 $690 Unspecified Pipe Body Or Seam
Nov. 22, 1995 Sinclair Transportation Company 0 0 $13.8K Miscellaneous Cause
Feb. 2, 1996 Montana Dakota Utilities Co 0 2 $0 Temperature
March 1, 1996 Mid America Pipeline Co (Mapco) 0 0 $849 Malfunction Of Control/Relief Equipment
April 7, 1996 Amoco Pipeline Co 0 0 $29.8K Malfunction Of Control/Relief Equipment
May 12, 1996 Wamsutter Pipeline, Inc. 0 0 $9,487 Internal Corrosion
Jan. 2, 1997 Mid America Pipeline Co (Mapco) 0 0 $226K Unspecified Weld
Feb. 25, 1997 Amoco Pipeline Co 0 0 $666 Miscellaneous Cause
April 10, 1997 Conoco Inc (Aka Conoco Pipe Line) 0 0 $3,330 Miscellaneous Cause
May 6, 1997 Conoco Inc (Aka Conoco Pipe Line) 0 0 $406K Unspecified Pipe Body Or Seam
June 26, 1997 Amoco Pipeline Co 0 0 $0 Miscellaneous Cause
June 26, 1997 Conoco Inc (Aka Conoco Pipe Line) 0 0 $666K Unspecified Natural Force Damage
Aug. 24, 1997 Conoco Inc (Aka Conoco Pipe Line) 0 0 $6,660 Miscellaneous Cause
March 31, 1998 Mapco Inc 0 0 $82K Operator/Contractor Excavation Damage
June 9, 1998 Conoco Inc (Aka Conoco Pipe Line) 0 0 $6,843 Miscellaneous Cause
July 21, 1998 Wbi Energy Transmission, Inc. 0 0 $547K Miscellaneous Cause
Sept. 19, 1998 Conoco Inc (Aka Conoco Pipe Line) 0 0 $6,580 Unspecified Incorrect Operation
Nov. 23, 1998 Sourcegas Llc 0 0 $132K Unspecified Mat'l/Weld/Equip Failure
Jan. 29, 1999 Cheyenne Light Fuel & Power 0 0 $130K Unspecified Mat'l/Weld/Equip Failure
March 19, 1999 Sinclair Transportation Company 0 0 $195K Miscellaneous Cause
July 3, 1999 Conoco Inc (Aka Conoco Pipe Line) 0 0 $130K Miscellaneous Cause
Feb. 18, 2000 Belle Fourche Pipeline Co 0 0 $25.5K Operator/Contractor Excavation Damage
March 3, 2000 Belle Fourche Pipeline Co 0 0 $38.2K External Corrosion
Nov. 14, 2000 Conoco Inc (Aka Conoco Pipe Line) 0 0 $573K Unspecified Pipe Body Or Seam
June 25, 2001 Frannie Deaver Utilities 2 1 $49.8K Unspecified Outside Force Damage
Feb. 5, 2002 Colorado Interstate Gas Co 0 0 $116K Joint/Fitting/Component
March 3, 2002 Bp Pipeline (North America) Inc. 0 0 $4,547 Temperature
March 14, 2002 Marathon Pipe Line Llc 0 0 $153K Threaded Connection/Coupling Failure
March 26, 2002 Colorado Interstate Gas Co 0 0 $177K Butt Weld
April 14, 2002 Conoco Inc (Aka Conoco Pipe Line) 0 0 $342K Third Party Excavation Damage
Feb. 11, 2003 Rocky Mountain Pipeline System, Llc 0 0 $64.7K Internal Corrosion
Feb. 27, 2003 Rocky Mountain Pipeline System, Llc 0 0 $94.6K External Corrosion
March 21, 2003 Rocky Mountain Pipeline System, Llc 0 0 $22.6K External Corrosion
March 26, 2003 Sinclair Transportation Company 0 0 $482K Previous Mechanical Damage
April 3, 2003 Kern River Gas Transmission Co (Wgp) 0 0 $148K Miscellaneous Cause
July 24, 2003 Colorado Interstate Gas Co 0 0 $12K Operator/Contractor Excavation Damage
Oct. 8, 2003 Kinder Morgan Pipelines (Usa) Inc 0 0 $12K Operator/Contractor Excavation Damage
Nov. 8, 2003 Northwest Pipeline Corp (Wgp) 0 0 $103K Pipe Seam
Dec. 9, 2003 Kinder Morgan Pipelines (Usa) Inc 0 4 $0 Unspecified Incorrect Operation
Jan. 2, 2004 Northwest Pipeline Corp (Wgp) 0 0 $128K Butt Weld
Jan. 16, 2004 Nustar Pipeline Operating Partnership L.P. 0 0 $78.4K Temperature
May 3, 2004 Kinder Morgan Pipelines (Usa) Inc 0 0 $22.6K Non Threaded Connection Failure
Sept. 24, 2004 Sinclair Transportation Company 0 0 $6,530 Operator/Contractor Excavation Damage
March 3, 2005 Belle Fourche Pipeline Co 0 0 $3,518 Third Party Excavation Damage
Aug. 15, 2005 Rocky Mountain Pipeline System, Llc 0 0 $14.5K Internal Corrosion
Aug. 28, 2005 Kinder Morgan Pipelines (Usa) Inc 0 0 $29.3K Internal Corrosion
Sept. 29, 2005 Colorado Interstate Gas Co 0 0 $275K Joint/Fitting/Component
Dec. 5, 2005 Phillips 66 Pipeline Llc 0 0 $36.9K Miscellaneous Cause
Dec. 8, 2005 Colorado Interstate Gas Co 0 0 $176K Fire/Explosion As Primary Cause
Dec. 8, 2005 Northwest Pipeline Corp (Wgp) 0 0 $1.41M Body Of Pipe
Feb. 1, 2006 Kinder Morgan Pipelines (Usa) Inc 0 0 $256K Pipe Seam
July 15, 2006 Montana Dakota Utilities Co 0 0 $222K Fire/Explosion As Primary Cause
Nov. 11, 2006 Colorado Interstate Gas Co 1 0 $0 Third Party Excavation Damage
Dec. 15, 2006 Northwest Pipeline Corp (Wgp) 0 0 $167K Joint/Fitting/Component
Nov. 9, 2007 Rocky Mountain Pipeline System, Llc 0 0 $269K Non Threaded Connection Failure
June 3, 2008 Kinder Morgan Pipelines (Usa) Inc 0 0 $191K Non Threaded Connection Failure
July 15, 2008 Belle Fourche Pipeline Co 0 0 $39.7K Internal Corrosion
Aug. 27, 2008 Questar Gas Company 0 0 $628K Fire/Explosion As Primary Cause
Sept. 25, 2008 Questar Gas Company 0 0 $524K Fire/Explosion As Primary Cause
Dec. 31, 2008 Marathon Pipe Line Llc 0 0 $13.1K Unspecified Incorrect Operation
Jan. 5, 2009 Rocky Mountain Pipeline System, Llc 0 0 $579K External Corrosion
Feb. 22, 2009 Sourcegas Llc 0 0 $103K Vehicle Not Engaged In Excavation
April 15, 2009 Phillips 66 Pipeline Llc 0 0 $355K Third Party Excavation Damage
Aug. 10, 2009 Belle Fourche Pipeline Co 0 0 $38.2K Unspecified Incorrect Operation
April 5, 2010 Bridger Lake, Llc 0 0 $4.02M Pipeline/Equipment Overpressured
March 7, 2011 Marathon Pipe Line Llc 0 0 $30.6K Pump/Compressor Related Equipment
July 20, 2011 Transcanada Northern Border Inc 0 0 $6.7M Construction, Installation Or Fabrication Related
July 21, 2011 Questar Pipeline Company 0 0 $91.5K Malfunction Of Control/Relief Equipment
Sept. 20, 2011 Marathon Pipe Line Llc 0 0 $39.2K Internal Corrosion
Nov. 14, 2011 Belle Fourche Pipeline Co 0 0 $336K Non Threaded Connection Failure
Dec. 4, 2011 Questar Pipeline Company 0 0 $283K Other Equipment Failure
Jan. 27, 2012 Sinclair Transportation Company 0 0 $67.6K Damage By Operator Or Operator's Contractor