Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2018-06-07 — TX
Operator
Columbia Gas Transmission, Llc
Cause
Natural Force Damage
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$13,422,000
Incident datetime
2018-06-07 04:37
Report number
Location
TX
Narrative
On june 7th, 2018, an unintended release event of natural gas (material) into the atmosphere was reported to the national response center (nrc). This event took place on the leach express (lex) pipeline that is operated and maintained by columbia gas transmission, llc (columbia). Lex pipeline is a 36 inch diameter natural gas pipeline and is classified as transmission, with a maximum allowable operating pressure of 1,440 psig. Lex is a unidirectional flow pipeline that starts near majorsville , west virginia and terminates at the tie-in with r-system regulator station (ohio). At 04:16 eastern standard time (est), the columbia gas control personnel noted a low pressure scada alarm and columbia operations personnel were dispatched to investigate the event. At 04:37 est, the columbia monitoring center received a call from the marshall county 911 regarding a pipeline failure in marshall county, wv near wv state route 21/1 (nixon ridge road). The failure was within valve section (vs) mainline valve lex-500 to mainline valve lex-600 (isolated segment). The material ignited. Limited damage occurred to vegetation and trees within the area of the pipeline failure site. No structures were identified near the failure site. No fatalities or injuries were reported as a result of this pipeline failure. The failed pipeline section was isolated at approximately 05:20 est. The failed sections of the pipeline were sent to a metallurgical laboratory to determine the probable cause behind the failure of the pipeline. The 48-hr updateto the nrc was completed on june 8th, 2018 with report no. 1214673. The laboratory report identified the incident was caused by a single, overload event. Overloading of the pipeline resulted from what was likely a series of lateral displacements with accompanying bending.
Detailed record list
Report Received Date
2018-06-27 00:00:00
Iyear
2018
Report Number
20180067
Supplemental Number
31416
Report Type
Supplemental Final
Operator Id
2616
Name
Columbia Gas Transmission, Llc
Operator Street Address
700 Louisiana St. Suite 700
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Local Datetime
2018-06-07 04:16:00
Location Latitude
39.806667
Location Longitude
-80.759444
Nrc Rpt Num
1214458
Nrc Rpt Datetime
2018-06-07 06:12:00
Commodity Released Type
Natural Gas
Unintentional Release
165000
Intentional Release
0
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2018-06-07 05:20:00
Restart Datetime
2018-07-15 14:18:00
Ignite Ind
Yes
Explode Ind
Yes
Num Pub Evacuated
0
Incident Identified Datetime
2018-06-07 04:37:00
On Site Datetime
2018-06-07 06:00:00
On Off Shore
Onshore
Onshore State Abbreviation
Wv
Onshore Postal Code
26041
Onshore City Name
Moundsville
Onshore County Name
Marshall
Designated Location
Milepost
Designated Name
Mp 21.3
Pipe Fac Name
Leach Xpress
Segment Name
Mainline Valve Lex-500 To Mainline Valve Lex-600
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
36
Crossing
No
Pipe Facility Type
Interstate
System Part Involved
Onshore Pipeline, Including Valve Sites
Item Involved
Pipe
Pipe Type
Pipe Body
Pipe Diameter
36
Pipe Wall Thickness
0.515
Pipe Smys
70000
Pipe Specification
Api 5l X70m
Pipe Seam Type
Dsaw
Pipe Manufacturer
Durabond
Pipe Coating Type
Epoxy
Installation Year
2017
Manufactured Year
2015
Material Involved
Carbon Steel
Release Type
Rupture
Rupture Orient
Circumferential
Rupture Length
113
Rupture Width
36
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
1056
Heat Damage Ind
No
Non Heat Damage Ind
No
Hca Fatalities Ind
No
Est Cost Oper Paid
600000
Est Cost Unintentional Release
437250
Est Cost Intentional Release
0
Est Cost Prop Damage
13422000
Est Cost Emergency
0
Est Cost Other
5925384
Est Cost Other Details
Back To Service Sites
Prpty
20384634
Accident Psig
1280
Mop Psig
1440
Mop Cfr Section
192.619(A)(1)
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
No
Upstream Valve Type Ind
Manual
Downstream Valve Type Ind
Automatic
Length Segment Isolated
71280
Internal Inspection Ind
Yes
Operation Complications Ind
No
Pipeline Function
Transmission System
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
Yes
Scada Conf Ind
Yes
Accident Identifier
Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Or Pack Calculations)
Investigation Status
No, the operator did not find that an investigation of the controller(s) actions or control room issues was necessary due to: (provide an explanation for why the operator did not investigate)
Investigation Status Details
The control room personnel were not performing any changes to the pipeline system that may have identified as a contributing factor that may have potentially led to the pipeline failure
Employee Drug Test Ind
Yes
Contractor Drug Test Ind
No
Num Employees Tested
1
Num Employees Failed
0
Cause
Natural Force Damage
Cause Details
Earth Movement, Not Due To Heavy Rains/floods
Natural Force Type
Earth Movement, Not Due To Heavy Rains/floods
Earth Subtype
Subsidence
Nf Extreme Weather Ind
No
Preparer Name
K***** R****** A*******
Preparer Title
Compliance Specialist
Preparer Email
K*************@t**********.com
Preparer Telephone
304-357-2351
Authorizer Name
G***** H*****
Authorizer Title
Manager Us Regulatory Compliance East
Authorizer Telephone
304-357-3728
Authorizer Email
G************@t**********.com
Narrative
On june 7th, 2018, an unintended release event of natural gas (material) into the atmosphere was reported to the national response center (nrc). This event took place on the leach express (lex) pipeline that is operated and maintained by columbia gas transmission, llc (columbia). Lex pipeline is a 36 inch diameter natural gas pipeline and is classified as transmission, with a maximum allowable operating pressure of 1,440 psig. Lex is a unidirectional flow pipeline that starts near majorsville , west virginia and terminates at the tie-in with r-system regulator station (ohio). At 04:16 eastern standard time (est), the columbia gas control personnel noted a low pressure scada alarm and columbia operations personnel were dispatched to investigate the event. At 04:37 est, the columbia monitoring center received a call from the marshall county 911 regarding a pipeline failure in marshall county, wv near wv state route 21/1 (nixon ridge road). The failure was within valve section (vs) mainline valve lex-500 to mainline valve lex-600 (isolated segment). The material ignited. Limited damage occurred to vegetation and trees within the area of the pipeline failure site. No structures were identified near the failure site. No fatalities or injuries were reported as a result of this pipeline failure. The failed pipeline section was isolated at approximately 05:20 est. The failed sections of the pipeline were sent to a metallurgical laboratory to determine the probable cause behind the failure of the pipeline. The 48-hr updateto the nrc was completed on june 8th, 2018 with report no. 1214673. The laboratory report identified the incident was caused by a single, overload event. Overloading of the pipeline resulted from what was likely a series of lateral displacements with accompanying bending.
| Report Received Date | 2018-06-27 00:00:00 |
|---|---|
| Iyear | 2018 |
| Report Number | 20180067 |
| Supplemental Number | 31416 |
| Report Type | Supplemental Final |
| Operator Id | 2616 PHMSA Enforcement |
| Name | Columbia Gas Transmission, Llc |
| Operator Street Address | 700 Louisiana St. Suite 700 |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77002 |
| Local Datetime | 2018-06-07 04:16:00 |
| Location Latitude | 39.806667 Google Maps OpenStreetMap |
| Location Longitude | -80.759444 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1214458 NRC Report How to search |
| Nrc Rpt Datetime | 2018-06-07 06:12:00 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 165000 |
| Intentional Release | 0 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2018-06-07 05:20:00 |
| Restart Datetime | 2018-07-15 14:18:00 |
| Ignite Ind | Yes |
| Explode Ind | Yes |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2018-06-07 04:37:00 |
| On Site Datetime | 2018-06-07 06:00:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Wv |
| Onshore Postal Code | 26041 |
| Onshore City Name | Moundsville |
| Onshore County Name | Marshall |
| Designated Location | Milepost |
| Designated Name | Mp 21.3 |
| Pipe Fac Name | Leach Xpress |
| Segment Name | Mainline Valve Lex-500 To Mainline Valve Lex-600 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 36 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Pipe Diameter | 36 |
| Pipe Wall Thickness | 0.515 |
| Pipe Smys | 70000 |
| Pipe Specification | Api 5l X70m |
| Pipe Seam Type | Dsaw |
| Pipe Manufacturer | Durabond |
| Pipe Coating Type | Epoxy |
| Installation Year | 2017 |
| Manufactured Year | 2015 |
| Material Involved | Carbon Steel |
| Release Type | Rupture |
| Rupture Orient | Circumferential |
| Rupture Length | 113 |
| Rupture Width | 36 |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 1056 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Hca Fatalities Ind | No |
| Est Cost Oper Paid | 600000 |
| Est Cost Unintentional Release | 437250 |
| Est Cost Intentional Release | 0 |
| Est Cost Prop Damage | 13422000 |
| Est Cost Emergency | 0 |
| Est Cost Other | 5925384 |
| Est Cost Other Details | Back To Service Sites |
| Prpty | 20384634 |
| Accident Psig | 1280 |
| Mop Psig | 1440 |
| Mop Cfr Section | 192.619(A)(1) View CFR 49 §192 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Pressure Restriction Ind | No |
| Upstream Valve Type Ind | Manual |
| Downstream Valve Type Ind | Automatic |
| Length Segment Isolated | 71280 |
| Internal Inspection Ind | Yes |
| Operation Complications Ind | No |
| Pipeline Function | Transmission System |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | Yes |
| Scada Conf Ind | Yes |
| Accident Identifier | Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Or Pack Calculations) |
| Investigation Status | No, the operator did not find that an investigation of the controller(s) actions or control room issues was necessary due to: (provide an explanation for why the operator did not investigate) |
| Investigation Status Details | The control room personnel were not performing any changes to the pipeline system that may have identified as a contributing factor that may have potentially led to the pipeline failure |
| Employee Drug Test Ind | Yes |
| Contractor Drug Test Ind | No |
| Num Employees Tested | 1 |
| Num Employees Failed | 0 |
| Cause | Natural Force Damage |
| Cause Details | Earth Movement, Not Due To Heavy Rains/floods |
| Natural Force Type | Earth Movement, Not Due To Heavy Rains/floods |
| Earth Subtype | Subsidence |
| Nf Extreme Weather Ind | No |
| Preparer Name | K***** R****** A******* |
| Preparer Title | Compliance Specialist |
| Preparer Email | K*************@t**********.com |
| Preparer Telephone | 304-357-2351 |
| Authorizer Name | G***** H***** |
| Authorizer Title | Manager Us Regulatory Compliance East |
| Authorizer Telephone | 304-357-3728 |
| Authorizer Email | G************@t**********.com |
| Narrative | On june 7th, 2018, an unintended release event of natural gas (material) into the atmosphere was reported to the national response center (nrc). This event took place on the leach express (lex) pipeline that is operated and maintained by columbia gas transmission, llc (columbia). Lex pipeline is a 36 inch diameter natural gas pipeline and is classified as transmission, with a maximum allowable operating pressure of 1,440 psig. Lex is a unidirectional flow pipeline that starts near majorsville , west virginia and terminates at the tie-in with r-system regulator station (ohio). At 04:16 eastern standard time (est), the columbia gas control personnel noted a low pressure scada alarm and columbia operations personnel were dispatched to investigate the event. At 04:37 est, the columbia monitoring center received a call from the marshall county 911 regarding a pipeline failure in marshall county, wv near wv state route 21/1 (nixon ridge road). The failure was within valve section (vs) mainline valve lex-500 to mainline valve lex-600 (isolated segment). The material ignited. Limited damage occurred to vegetation and trees within the area of the pipeline failure site. No structures were identified near the failure site. No fatalities or injuries were reported as a result of this pipeline failure. The failed pipeline section was isolated at approximately 05:20 est. The failed sections of the pipeline were sent to a metallurgical laboratory to determine the probable cause behind the failure of the pipeline. The 48-hr updateto the nrc was completed on june 8th, 2018 with report no. 1214673. The laboratory report identified the incident was caused by a single, overload event. Overloading of the pipeline resulted from what was likely a series of lateral displacements with accompanying bending. |
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