Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2020-03-26 — TX
Operator
Columbia Gas Transmission, Llc
Cause
Corrosion Failure
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$2,268,855
Incident datetime
2020-03-26 08:45
Report number
Location
TX
Narrative
On march 26, 2020 at 08:45 eastern daylight time (edt), columbia gas transmission, llc (columbia) monitoring center received a call from a passer-by regarding the observation of gas bubbling in tuscarawas river. Columbia operations personnel were on site at 09:58 edt and confirmed that the unintended natural gas (material) release was from line o-1460. The involved section of line o-1460 in this event crossed at the bottom a river. Line o-1460 is carbon steel transmission pipeline with 6 inch in diameter and maximum allowable operating pressure of 280 psig operated and maintained by columbia. On march 28, 2020 at approximately 18:55 edt, the affected section of line o-1460 was isolated and emergency blowdown of the affected section was initiated. The blowdown was completed at 19:28 edt. The leak was isolated and the affected section of the line o-1460 was isolated and removed from service. A compressed natural gas tanker was connected and started feeding the downstream customers whose service is provided by the local distribution operator. The river-crossing section of line o-1460 was cut and capped on both ends. The initial national response center report no.1278263 and the nrc 48-hour report no. 1274397 have been called-in on march 26th and march 28th respectively. The involved segments of line o-1460 in this incident were sent to a metallurgical failure analysis laboratory to establish the root cause behind this river-crossing pipeline failure. The metallurgical failure analysis report of line o-1460 identified that the cause of the leak is erosion-corrosion. The construction of the replacement section for line o-1460 was completed by using horizontal directional drilling (hdd) method for installing pipe under the tuscarawas river. The hdd method will help protect the pipe to avoid future events from re-occurring. Resubmitted the final report per an email from PHMSA investigator on 6/25/2024.
Detailed record list
Report Received Date
2020-04-23 00:00:00
Iyear
2020
Report Number
20200037
Supplemental Number
39798
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
2020-03-26 08:45:00
Time Zone
Eastern
Daylight Savings Ind
Yes
Location Latitude
40.27306
Location Longitude
-81.57444
Nrc Rpt Num
1274263
Nrc Rpt Datetime
2020-03-26 11:17:00
Additional Nrc Report Numbers
1274397
Commodity Released Type
Natural Gas
Unintentional Release
8538
Intentional Release
84.7
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Status When Identified
Normal Operation, Includes Pauses During Maintenance
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2020-03-28 18:55:00
Restart Datetime
2020-04-24 12:00:00
Communication State Fed Ind
Yes
Party Initiated Communication
Operator
Initial Responder Com Datetime
2020-03-26 10:21:00
Ignite Ind
No
Upstream Action Taken
Valve Closure
Upstream Valve Close Datetime
2020-03-28 14:09:00
Downstream Action Taken
Valve Closure
Downstream Vlv Close Datetime
2020-03-28 18:50:00
Num Pub Evacuated
0
Incident Identified Datetime
2020-03-26 08:45:00
On Site Datetime
2020-03-26 09:58:00
Confirmed Discovery Datetime
2020-03-26 11:00:00
On Off Shore
Onshore
Onshore State Abbreviation
Oh
Onshore Postal Code
43832
Onshore City Name
Newcomerstown
Onshore County Name
Tuscarawas
Designated Location
Survey Station No.
Designated Name
62+61
Pipe Fac Name
O-1460
Segment Name
O-1460-100
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Other
Incident Area Details
Under The River
Other Underground Facilities
No
Crossing
Yes
Water Crossing Ind
Yes
Water Type
Uncased
Water Name
Tuscarawas River
Water Depth
7
Water Subtype
Below Water, Pipe On Or Above Bottom
Crossing 100 Feet
Yes
Pipe Facility Type
Interstate
System Part Involved
Onshore Pipeline, Including Valve Sites
Item Involved
Pipe
Pipe Type
Pipe Body
Pipe Diameter
6
Puddle Weld Ind
No
Pipe Wall Thickness
0.25
Pipe Smys
35000
Pipe Specification
Grade B
Pipe Seam Type
Seamless
Pipe Manufacturer
Unknown
Pipe Coating Type
None
Coating Applied Ind
Unknown
Installation Year
1954
Manufactured Year
Unknown
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Pinhole
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
140
Heat Damage Ind
No
Non Heat Damage Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
13234
Est Cost Intentional Release
131
Est Cost Prop Damage
2268855
Est Cost Emergency
0
Est Cost Other
0
Gas Cost In Mcf
1.55
Prpty
2282220
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Wildlife Impact Ind
No
Accident Psig
185
Gas Flow In Pipe In Mcf
328
Mop Psig
280
Mop Cfr Section
192.619(C)
Maop Established Date
1976-05-07 00:00:00
Maop Reversal Flow Ind
No
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
No
Gas Required Odorized Ind
Yes
Gas Odorized Ind
Yes
Upstream Valve Type Ind
Manual
Downstream Valve Type Ind
Manual
Length Segment Isolated
32594
Internal Inspection Ind
No
Diameter Change Ind
Yes
Operation Complications Ind
Yes
Low Op Pressure Ind
Yes
Pipeline Function
Transmission System
Scada In Place Ind
No
Accident Identifier
Notification From Public
Investigation Status
No, the facility was not monitored by a controller(s) at the time of the incident
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Corrosion Failure
Cause Details
External Corrosion
Internal External
External Corrosion
Visual Exam Results
General Corrosion
Other Corrosion Ind
Yes
Corrosion Type Details
Erosion
Field Exam Basis Ind
Yes
Metallurgical Basis Ind
Yes
Underground Location
Yes
Under Cathodic Protection Ind
Yes
Cathodic Pro Start Year
1954
Shielding Evident
No
Cathodic Survey Type
No
Prior Damage
Yes
Collected Data Ind
No
Has Hydrtst Conduc Before Ind
No
Direct Asmnt Conducted
No
Non Destructive Exam Ind
No
Preparer Name
K***** R******
Preparer Title
Compliance Specialist
Preparer Email
K*************@t*******.com
Preparer Telephone
3045905956
Authorizer Name
C*** B*****
Authorizer Title
Us Regulatory Compliance Manager East
Authorizer Telephone
(304)541-2170
Authorizer Email
C**********@t*******.com
Narrative
On march 26, 2020 at 08:45 eastern daylight time (edt), columbia gas transmission, llc (columbia) monitoring center received a call from a passer-by regarding the observation of gas bubbling in tuscarawas river. Columbia operations personnel were on site at 09:58 edt and confirmed that the unintended natural gas (material) release was from line o-1460. The involved section of line o-1460 in this event crossed at the bottom a river. Line o-1460 is carbon steel transmission pipeline with 6 inch in diameter and maximum allowable operating pressure of 280 psig operated and maintained by columbia. On march 28, 2020 at approximately 18:55 edt, the affected section of line o-1460 was isolated and emergency blowdown of the affected section was initiated. The blowdown was completed at 19:28 edt. The leak was isolated and the affected section of the line o-1460 was isolated and removed from service. A compressed natural gas tanker was connected and started feeding the downstream customers whose service is provided by the local distribution operator. The river-crossing section of line o-1460 was cut and capped on both ends. The initial national response center report no.1278263 and the nrc 48-hour report no. 1274397 have been called-in on march 26th and march 28th respectively. The involved segments of line o-1460 in this incident were sent to a metallurgical failure analysis laboratory to establish the root cause behind this river-crossing pipeline failure. The metallurgical failure analysis report of line o-1460 identified that the cause of the leak is erosion-corrosion. The construction of the replacement section for line o-1460 was completed by using horizontal directional drilling (hdd) method for installing pipe under the tuscarawas river. The hdd method will help protect the pipe to avoid future events from re-occurring. Resubmitted the final report per an email from PHMSA investigator on 6/25/2024.
| Report Received Date | 2020-04-23 00:00:00 |
|---|---|
| Iyear | 2020 |
| Report Number | 20200037 |
| Supplemental Number | 39798 |
| 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 | 2020-03-26 08:45:00 |
| Time Zone | Eastern |
| Daylight Savings Ind | Yes |
| Location Latitude | 40.27306 Google Maps OpenStreetMap |
| Location Longitude | -81.57444 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1274263 NRC Report How to search |
| Nrc Rpt Datetime | 2020-03-26 11:17:00 |
| Additional Nrc Report Numbers | 1274397 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 8538 |
| Intentional Release | 84.7 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Status When Identified | Normal Operation, Includes Pauses During Maintenance |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2020-03-28 18:55:00 |
| Restart Datetime | 2020-04-24 12:00:00 |
| Communication State Fed Ind | Yes |
| Party Initiated Communication | Operator |
| Initial Responder Com Datetime | 2020-03-26 10:21:00 |
| Ignite Ind | No |
| Upstream Action Taken | Valve Closure |
| Upstream Valve Close Datetime | 2020-03-28 14:09:00 |
| Downstream Action Taken | Valve Closure |
| Downstream Vlv Close Datetime | 2020-03-28 18:50:00 |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2020-03-26 08:45:00 |
| On Site Datetime | 2020-03-26 09:58:00 |
| Confirmed Discovery Datetime | 2020-03-26 11:00:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Oh |
| Onshore Postal Code | 43832 |
| Onshore City Name | Newcomerstown |
| Onshore County Name | Tuscarawas |
| Designated Location | Survey Station No. |
| Designated Name | 62+61 |
| Pipe Fac Name | O-1460 |
| Segment Name | O-1460-100 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Other |
| Incident Area Details | Under The River |
| Other Underground Facilities | No |
| Crossing | Yes |
| Water Crossing Ind | Yes |
| Water Type | Uncased |
| Water Name | Tuscarawas River |
| Water Depth | 7 |
| Water Subtype | Below Water, Pipe On Or Above Bottom |
| Crossing 100 Feet | Yes |
| Pipe Facility Type | Interstate |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Pipe Diameter | 6 |
| Puddle Weld Ind | No |
| Pipe Wall Thickness | 0.25 |
| Pipe Smys | 35000 |
| Pipe Specification | Grade B |
| Pipe Seam Type | Seamless |
| Pipe Manufacturer | Unknown |
| Pipe Coating Type | None |
| Coating Applied Ind | Unknown |
| Installation Year | 1954 |
| Manufactured Year | Unknown |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Pinhole |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 140 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 13234 |
| Est Cost Intentional Release | 131 |
| Est Cost Prop Damage | 2268855 |
| Est Cost Emergency | 0 |
| Est Cost Other | 0 |
| Gas Cost In Mcf | 1.55 |
| Prpty | 2282220 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Wildlife Impact Ind | No |
| Accident Psig | 185 |
| Gas Flow In Pipe In Mcf | 328 |
| Mop Psig | 280 |
| Mop Cfr Section | 192.619(C) View CFR 49 §192 |
| Maop Established Date | 1976-05-07 00:00:00 |
| Maop Reversal Flow Ind | No |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Pressure Restriction Ind | No |
| Gas Required Odorized Ind | Yes |
| Gas Odorized Ind | Yes |
| Upstream Valve Type Ind | Manual |
| Downstream Valve Type Ind | Manual |
| Length Segment Isolated | 32594 |
| Internal Inspection Ind | No |
| Diameter Change Ind | Yes |
| Operation Complications Ind | Yes |
| Low Op Pressure Ind | Yes |
| Pipeline Function | Transmission System |
| Scada In Place Ind | No |
| Accident Identifier | Notification From Public |
| Investigation Status | No, the facility was not monitored by a controller(s) at the time of the incident |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Corrosion Failure |
| Cause Details | External Corrosion |
| Internal External | External Corrosion |
| Visual Exam Results | General Corrosion |
| Other Corrosion Ind | Yes |
| Corrosion Type Details | Erosion |
| Field Exam Basis Ind | Yes |
| Metallurgical Basis Ind | Yes |
| Underground Location | Yes |
| Under Cathodic Protection Ind | Yes |
| Cathodic Pro Start Year | 1954 |
| Shielding Evident | No |
| Cathodic Survey Type | No |
| Prior Damage | Yes |
| Collected Data Ind | No |
| Has Hydrtst Conduc Before Ind | No |
| Direct Asmnt Conducted | No |
| Non Destructive Exam Ind | No |
| Preparer Name | K***** R****** |
| Preparer Title | Compliance Specialist |
| Preparer Email | K*************@t*******.com |
| Preparer Telephone | 3045905956 |
| Authorizer Name | C*** B***** |
| Authorizer Title | Us Regulatory Compliance Manager East |
| Authorizer Telephone | (304)541-2170 |
| Authorizer Email | C**********@t*******.com |
| Narrative | On march 26, 2020 at 08:45 eastern daylight time (edt), columbia gas transmission, llc (columbia) monitoring center received a call from a passer-by regarding the observation of gas bubbling in tuscarawas river. Columbia operations personnel were on site at 09:58 edt and confirmed that the unintended natural gas (material) release was from line o-1460. The involved section of line o-1460 in this event crossed at the bottom a river. Line o-1460 is carbon steel transmission pipeline with 6 inch in diameter and maximum allowable operating pressure of 280 psig operated and maintained by columbia. On march 28, 2020 at approximately 18:55 edt, the affected section of line o-1460 was isolated and emergency blowdown of the affected section was initiated. The blowdown was completed at 19:28 edt. The leak was isolated and the affected section of the line o-1460 was isolated and removed from service. A compressed natural gas tanker was connected and started feeding the downstream customers whose service is provided by the local distribution operator. The river-crossing section of line o-1460 was cut and capped on both ends. The initial national response center report no.1278263 and the nrc 48-hour report no. 1274397 have been called-in on march 26th and march 28th respectively. The involved segments of line o-1460 in this incident were sent to a metallurgical failure analysis laboratory to establish the root cause behind this river-crossing pipeline failure. The metallurgical failure analysis report of line o-1460 identified that the cause of the leak is erosion-corrosion. The construction of the replacement section for line o-1460 was completed by using horizontal directional drilling (hdd) method for installing pipe under the tuscarawas river. The hdd method will help protect the pipe to avoid future events from re-occurring. Resubmitted the final report per an email from PHMSA investigator on 6/25/2024. |
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