Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2022-11-28 — WV
Operator
Eastern Gas Transmission And Storage, Inc.
Cause
Corrosion Failure
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$480,000
Incident datetime
2022-11-28 23:23
Report number
Location
WV
Narrative
On 11/28/22 at approx 23:22, tl-442 ruptured at sta 5+00 under an access road on company property in pine grove, wv. Initial notice was received from an outside party at approx 23:23. Tl-442 is a 16 in od transmission pipeline approx 0.30 mi long and transports natural gas from hastings cs to mockingbird hill cs. The maop of tl-442 is 990 psig. A pressure restriction of 960 psig was established in 2003 for tl-442 due to its connection to tl-430 at haught jct. Tl-442 was in normal operation with an op of 947 psig when the incident occurred. At approx 23:30, ops personnel called 911. Also at approx 23:30, the c-300 unit at hastings cs shutdown and the associated unit valves closed, isolating tl-442 upstream of the rupture. At approx 23:33, gas control remotely closed valve-420jj, isolating tl-442 downstream of the rupture. At approx 23:50, ops personnel arrived at the site. The rupture resulted in an approx 40 ft length of pipe opening circumferentially and longitudinally (not seam oriented) and both ends folding up and coming out of the ground; approx 23,403 mcf of gas loss; damage to the access road; and debris being blown on the right-of-way, s.R. 20, and a railroad. S.R. 20 and the railroad were temporarily closed at 23:40 to remove debris. The gas did not ignite and there were no fires, injuries, fatalities, or evacuations. It was determined on 11/29/2022 at 00:44 that the incident involved an unintentional estimated volume of gas loss of 3 mmscf or more. Initial notification (#1353645) was made to the nrc on 11/29/22 at 01:04. Follow up notification (#1353781) was made to the nrc on 11/30/22 at 11:46 to confirm the initial notification and update the current status of the tl-442, the gps coordinates, the estimated volume of unintentional gas loss, and the temporary closure (and reopening) of s.R. 20 and the railroad in order to remove debris. The estimated volume of unintentional gas loss was later confirmed to be 23,403 mcf. Tl-442 was restarted on 12/30/22 at 14:09 after completion of the following remediation: approx 485 ft of station piping at hastings cs associated with tl-442 was removed and replaced along with valve-425d to resume the flow of gas between hastings cs and mockingbird hill cs through tl-597 and into tl-430 while the remediation of tl-442 was completed. Both ends of the pipe were cut at the rupture on tl-442, upstream and downstream of the hinged areas where the pipe folded up and came out of the ground. The two pieces of pipe that were cut-out at the rupture were sent to kiefner for metallurgical analysis and replacement pipe was installed. The metallurgical analysis report from kiefner determined that external corrosion where disbonded polyethylene coating was shielding cathodic protection was the apparent cause of the failure. Pipe was cut-out at selected locations to provide access to the inside of tl-442 for wireline inspections. Wirelines using cal and mfl tools were conducted to assess the integrity of tl-442 and replacement pipe was installed at the access locations. Initial verification digs were completed on either side of the rupture to assist in validating the accuracy of the data from the wirelines. Based on the data from the wirelines, the results from the initial verification digs, and the evaluation of anomalies as described below, approx 950 ft of tl-442 was replaced. This involved replacing two sections of tl-442, from valve-425d to the south side of fishing creek and from the north side of s.R. 20 to mockingbird hill jct. The anomalies located in these two sections were evaluated as the pipe was excavated prior to removal and further verified the accuracy of the data from the wirelines. Approx 120 ft of tl-442 located in a casing under the railroad and s.R. 20 was removed and replacement pipe was installed. An anomaly located on the cased pipe that was removed was evaluated and further verified the accuracy of the data from the wirelines.
Detailed record list
Report Received Date
2022-12-27 00:00:00
Iyear
2022
Report Number
20220135
Supplemental Number
38004
Report Type
Supplemental Final
Operator Id
2714
Name
Eastern Gas Transmission And Storage, Inc.
Operator Street Address
925 White Oaks Boulevard
Operator City Name
Bridgeport
Operator State Abbreviation
WV
Operator Postal Code
26330
Local Datetime
2022-11-28 23:22:00
Time Zone
Eastern
Daylight Savings Ind
No
Location Latitude
39.550094
Location Longitude
-80.669592
Nrc Rpt Num
1353645
Nrc Rpt Datetime
2022-11-29 01:04:00
Additional Nrc Report Numbers
1353781
Commodity Released Type
Natural Gas
Unintentional Release
23403
Intentional Release
0
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
2022-11-28 23:33:00
Restart Datetime
2022-12-30 14:09:00
Communication State Fed Ind
Yes
Party Initiated Communication
Operator
Initial Responder Com Datetime
2022-11-28 23:30:00
Ignite Ind
No
Upstream Action Taken
Operational Control
Upstream Oprtnl Cntrl Detail
Unit C300 At Hastings Compressor Station Shutdown And Associated Unit Valves Closed.
Downstream Action Taken
Valve Closure
Downstream Vlv Close Datetime
2022-11-28 23:33:00
Num Pub Evacuated
0
Incident Identified Datetime
2022-11-28 23:23:00
On Site Datetime
2022-11-28 23:50:00
On Off Shore
Onshore
Onshore State Abbreviation
Wv
Onshore Postal Code
26419
Onshore City Name
Pine Grove
Onshore County Name
Wetzel
Designated Location
Survey Station No.
Designated Name
5+00
Pipe Fac Name
Tl-442
Segment Name
Tl-442
Federal
No
Location Type
Operator-Controlled Property
Incident Area Type
Underground
Incident Area Subtype
Under Pavement
Depth Of Cover
62
Other Underground Facilities
No
Crossing
Yes
Road Crossing Ind
Yes
Road Type
Uncased
Pipe Facility Type
Interstate
System Part Involved
Onshore Pipeline, Including Valve Sites
Item Involved
Pipe
Pipe Type
Pipe Body
Pipe Diameter
16
Puddle Weld Ind
No
Pipe Wall Thickness
0.25
Pipe Smys
60000
Pipe Specification
Api X-60
Pipe Seam Type
Longitudinal Erw - High Frequency
Pipe Manufacturer
Republic Steel
Pipe Coating Type
Cold Applied Tape
Coating Applied Ind
Yes
Installation Year
1981
Manufactured Year
1981
Material Involved
Carbon Steel
Release Type
Rupture
Rupture Orient
Circumferential
Rupture Length
50.3
Rupture Width
0.1
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
347
Heat Damage Ind
No
Non Heat Damage Ind
No
Did Occur In Mca Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
140418
Est Cost Intentional Release
0
Est Cost Prop Damage
480000
Est Cost Emergency
5000
Est Cost Other
150000
Est Cost Other Details
Failure Analysis
Gas Cost In Mcf
6
Prpty
775418
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
948
Gas Flow In Pipe In Mcf
134047.19
Mop Psig
990
Mop Cfr Section
192.619(A)(1)
Maop Established Date
1981-11-10 00:00:00
Maop Reversal Flow Ind
No
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
Yes
Exceed Restriction Ind
No
Phmsa Restriction Ind
Not Mandated
Gas Required Odorized Ind
No
Downstream Valve Type Ind
Remotely Controlled
Length Segment Isolated
1420
Internal Inspection Ind
No
Other Inspection Ind
Yes
Internal Inspection Details
No Launchers Or Receivers Are Installed To Facilitate In-Line Inspection Of The Pipeline.
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
Notification From Public
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
Controller actions or control room issues were not a cause of or a contributing factor to the incident. Gas control isolated tl-442 11 minutes after initiation of the rupture by remotely closing valve-420jj.
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
Galvanic Corrosion Ind
Yes
Field Exam Basis Ind
Yes
Metallurgical Basis Ind
Yes
Underground Location
Yes
Under Cathodic Protection Ind
Yes
Cathodic Pro Start Year
1981
Shielding Evident
Yes
Cathodic Survey Type
Yes
Cp Annual Survey Ind
Yes
Close Interval Survey Ind
Yes
Cp Annual Survey Year
2021
Close Interval Survey Year
2017
Prior Damage
No
Collected Data Ind
No
Has Hydrtst Conduc Before Ind
No
Direct Asmnt Conducted
No
Non Destructive Exam Ind
No
Preparer Name
D***** S****
Preparer Title
Pipeline Integrity Engineer
Preparer Email
D***********@b*****.com
Preparer Telephone
3042666062
Local Contact Name
M*** P***
Local Contact Email
B*********@b*****.com
Local Contact Telephone
6814954250
Authorizer Name
M*** F*******
Authorizer Title
Manager - Pipeline Integrity
Authorizer Telephone
8032600335
Authorizer Email
M************@b*****.com
Narrative
On 11/28/22 at approx 23:22, tl-442 ruptured at sta 5+00 under an access road on company property in pine grove, wv. Initial notice was received from an outside party at approx 23:23. Tl-442 is a 16 in od transmission pipeline approx 0.30 mi long and transports natural gas from hastings cs to mockingbird hill cs. The maop of tl-442 is 990 psig. A pressure restriction of 960 psig was established in 2003 for tl-442 due to its connection to tl-430 at haught jct. Tl-442 was in normal operation with an op of 947 psig when the incident occurred. At approx 23:30, ops personnel called 911. Also at approx 23:30, the c-300 unit at hastings cs shutdown and the associated unit valves closed, isolating tl-442 upstream of the rupture. At approx 23:33, gas control remotely closed valve-420jj, isolating tl-442 downstream of the rupture. At approx 23:50, ops personnel arrived at the site. The rupture resulted in an approx 40 ft length of pipe opening circumferentially and longitudinally (not seam oriented) and both ends folding up and coming out of the ground; approx 23,403 mcf of gas loss; damage to the access road; and debris being blown on the right-of-way, s.R. 20, and a railroad. S.R. 20 and the railroad were temporarily closed at 23:40 to remove debris. The gas did not ignite and there were no fires, injuries, fatalities, or evacuations. It was determined on 11/29/2022 at 00:44 that the incident involved an unintentional estimated volume of gas loss of 3 mmscf or more. Initial notification (#1353645) was made to the nrc on 11/29/22 at 01:04. Follow up notification (#1353781) was made to the nrc on 11/30/22 at 11:46 to confirm the initial notification and update the current status of the tl-442, the gps coordinates, the estimated volume of unintentional gas loss, and the temporary closure (and reopening) of s.R. 20 and the railroad in order to remove debris. The estimated volume of unintentional gas loss was later confirmed to be 23,403 mcf. Tl-442 was restarted on 12/30/22 at 14:09 after completion of the following remediation: approx 485 ft of station piping at hastings cs associated with tl-442 was removed and replaced along with valve-425d to resume the flow of gas between hastings cs and mockingbird hill cs through tl-597 and into tl-430 while the remediation of tl-442 was completed. Both ends of the pipe were cut at the rupture on tl-442, upstream and downstream of the hinged areas where the pipe folded up and came out of the ground. The two pieces of pipe that were cut-out at the rupture were sent to kiefner for metallurgical analysis and replacement pipe was installed. The metallurgical analysis report from kiefner determined that external corrosion where disbonded polyethylene coating was shielding cathodic protection was the apparent cause of the failure. Pipe was cut-out at selected locations to provide access to the inside of tl-442 for wireline inspections. Wirelines using cal and mfl tools were conducted to assess the integrity of tl-442 and replacement pipe was installed at the access locations. Initial verification digs were completed on either side of the rupture to assist in validating the accuracy of the data from the wirelines. Based on the data from the wirelines, the results from the initial verification digs, and the evaluation of anomalies as described below, approx 950 ft of tl-442 was replaced. This involved replacing two sections of tl-442, from valve-425d to the south side of fishing creek and from the north side of s.R. 20 to mockingbird hill jct. The anomalies located in these two sections were evaluated as the pipe was excavated prior to removal and further verified the accuracy of the data from the wirelines. Approx 120 ft of tl-442 located in a casing under the railroad and s.R. 20 was removed and replacement pipe was installed. An anomaly located on the cased pipe that was removed was evaluated and further verified the accuracy of the data from the wirelines.
| Report Received Date | 2022-12-27 00:00:00 |
|---|---|
| Iyear | 2022 |
| Report Number | 20220135 |
| Supplemental Number | 38004 |
| Report Type | Supplemental Final |
| Operator Id | 2714 PHMSA Enforcement |
| Name | Eastern Gas Transmission And Storage, Inc. |
| Operator Street Address | 925 White Oaks Boulevard |
| Operator City Name | Bridgeport |
| Operator State Abbreviation | WV |
| Operator Postal Code | 26330 |
| Local Datetime | 2022-11-28 23:22:00 |
| Time Zone | Eastern |
| Daylight Savings Ind | No |
| Location Latitude | 39.550094 Google Maps OpenStreetMap |
| Location Longitude | -80.669592 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1353645 NRC Report How to search |
| Nrc Rpt Datetime | 2022-11-29 01:04:00 |
| Additional Nrc Report Numbers | 1353781 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 23403 |
| Intentional Release | 0 |
| 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 | 2022-11-28 23:33:00 |
| Restart Datetime | 2022-12-30 14:09:00 |
| Communication State Fed Ind | Yes |
| Party Initiated Communication | Operator |
| Initial Responder Com Datetime | 2022-11-28 23:30:00 |
| Ignite Ind | No |
| Upstream Action Taken | Operational Control |
| Upstream Oprtnl Cntrl Detail | Unit C300 At Hastings Compressor Station Shutdown And Associated Unit Valves Closed. |
| Downstream Action Taken | Valve Closure |
| Downstream Vlv Close Datetime | 2022-11-28 23:33:00 |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2022-11-28 23:23:00 |
| On Site Datetime | 2022-11-28 23:50:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Wv |
| Onshore Postal Code | 26419 |
| Onshore City Name | Pine Grove |
| Onshore County Name | Wetzel |
| Designated Location | Survey Station No. |
| Designated Name | 5+00 |
| Pipe Fac Name | Tl-442 |
| Segment Name | Tl-442 |
| Federal | No |
| Location Type | Operator-Controlled Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Pavement |
| Depth Of Cover | 62 |
| Other Underground Facilities | No |
| Crossing | Yes |
| Road Crossing Ind | Yes |
| Road Type | Uncased |
| Pipe Facility Type | Interstate |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Pipe Diameter | 16 |
| Puddle Weld Ind | No |
| Pipe Wall Thickness | 0.25 |
| Pipe Smys | 60000 |
| Pipe Specification | Api X-60 |
| Pipe Seam Type | Longitudinal Erw - High Frequency |
| Pipe Manufacturer | Republic Steel |
| Pipe Coating Type | Cold Applied Tape |
| Coating Applied Ind | Yes |
| Installation Year | 1981 |
| Manufactured Year | 1981 |
| Material Involved | Carbon Steel |
| Release Type | Rupture |
| Rupture Orient | Circumferential |
| Rupture Length | 50.3 |
| Rupture Width | 0.1 |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 347 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Did Occur In Mca Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 140418 |
| Est Cost Intentional Release | 0 |
| Est Cost Prop Damage | 480000 |
| Est Cost Emergency | 5000 |
| Est Cost Other | 150000 |
| Est Cost Other Details | Failure Analysis |
| Gas Cost In Mcf | 6 |
| Prpty | 775418 |
| 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 | 948 |
| Gas Flow In Pipe In Mcf | 134047.19 |
| Mop Psig | 990 |
| Mop Cfr Section | 192.619(A)(1) View CFR 49 §192 |
| Maop Established Date | 1981-11-10 00:00:00 |
| Maop Reversal Flow Ind | No |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Pressure Restriction Ind | Yes |
| Exceed Restriction Ind | No |
| Phmsa Restriction Ind | Not Mandated |
| Gas Required Odorized Ind | No |
| Downstream Valve Type Ind | Remotely Controlled |
| Length Segment Isolated | 1420 |
| Internal Inspection Ind | No |
| Other Inspection Ind | Yes |
| Internal Inspection Details | No Launchers Or Receivers Are Installed To Facilitate In-Line Inspection Of The Pipeline. |
| 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 | Notification From Public |
| 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 | Controller actions or control room issues were not a cause of or a contributing factor to the incident. Gas control isolated tl-442 11 minutes after initiation of the rupture by remotely closing valve-420jj. |
| 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 |
| Galvanic Corrosion Ind | Yes |
| Field Exam Basis Ind | Yes |
| Metallurgical Basis Ind | Yes |
| Underground Location | Yes |
| Under Cathodic Protection Ind | Yes |
| Cathodic Pro Start Year | 1981 |
| Shielding Evident | Yes |
| Cathodic Survey Type | Yes |
| Cp Annual Survey Ind | Yes |
| Close Interval Survey Ind | Yes |
| Cp Annual Survey Year | 2021 |
| Close Interval Survey Year | 2017 |
| Prior Damage | No |
| Collected Data Ind | No |
| Has Hydrtst Conduc Before Ind | No |
| Direct Asmnt Conducted | No |
| Non Destructive Exam Ind | No |
| Preparer Name | D***** S**** |
| Preparer Title | Pipeline Integrity Engineer |
| Preparer Email | D***********@b*****.com |
| Preparer Telephone | 3042666062 |
| Local Contact Name | M*** P*** |
| Local Contact Email | B*********@b*****.com |
| Local Contact Telephone | 6814954250 |
| Authorizer Name | M*** F******* |
| Authorizer Title | Manager - Pipeline Integrity |
| Authorizer Telephone | 8032600335 |
| Authorizer Email | M************@b*****.com |
| Narrative | On 11/28/22 at approx 23:22, tl-442 ruptured at sta 5+00 under an access road on company property in pine grove, wv. Initial notice was received from an outside party at approx 23:23. Tl-442 is a 16 in od transmission pipeline approx 0.30 mi long and transports natural gas from hastings cs to mockingbird hill cs. The maop of tl-442 is 990 psig. A pressure restriction of 960 psig was established in 2003 for tl-442 due to its connection to tl-430 at haught jct. Tl-442 was in normal operation with an op of 947 psig when the incident occurred. At approx 23:30, ops personnel called 911. Also at approx 23:30, the c-300 unit at hastings cs shutdown and the associated unit valves closed, isolating tl-442 upstream of the rupture. At approx 23:33, gas control remotely closed valve-420jj, isolating tl-442 downstream of the rupture. At approx 23:50, ops personnel arrived at the site. The rupture resulted in an approx 40 ft length of pipe opening circumferentially and longitudinally (not seam oriented) and both ends folding up and coming out of the ground; approx 23,403 mcf of gas loss; damage to the access road; and debris being blown on the right-of-way, s.R. 20, and a railroad. S.R. 20 and the railroad were temporarily closed at 23:40 to remove debris. The gas did not ignite and there were no fires, injuries, fatalities, or evacuations. It was determined on 11/29/2022 at 00:44 that the incident involved an unintentional estimated volume of gas loss of 3 mmscf or more. Initial notification (#1353645) was made to the nrc on 11/29/22 at 01:04. Follow up notification (#1353781) was made to the nrc on 11/30/22 at 11:46 to confirm the initial notification and update the current status of the tl-442, the gps coordinates, the estimated volume of unintentional gas loss, and the temporary closure (and reopening) of s.R. 20 and the railroad in order to remove debris. The estimated volume of unintentional gas loss was later confirmed to be 23,403 mcf. Tl-442 was restarted on 12/30/22 at 14:09 after completion of the following remediation: approx 485 ft of station piping at hastings cs associated with tl-442 was removed and replaced along with valve-425d to resume the flow of gas between hastings cs and mockingbird hill cs through tl-597 and into tl-430 while the remediation of tl-442 was completed. Both ends of the pipe were cut at the rupture on tl-442, upstream and downstream of the hinged areas where the pipe folded up and came out of the ground. The two pieces of pipe that were cut-out at the rupture were sent to kiefner for metallurgical analysis and replacement pipe was installed. The metallurgical analysis report from kiefner determined that external corrosion where disbonded polyethylene coating was shielding cathodic protection was the apparent cause of the failure. Pipe was cut-out at selected locations to provide access to the inside of tl-442 for wireline inspections. Wirelines using cal and mfl tools were conducted to assess the integrity of tl-442 and replacement pipe was installed at the access locations. Initial verification digs were completed on either side of the rupture to assist in validating the accuracy of the data from the wirelines. Based on the data from the wirelines, the results from the initial verification digs, and the evaluation of anomalies as described below, approx 950 ft of tl-442 was replaced. This involved replacing two sections of tl-442, from valve-425d to the south side of fishing creek and from the north side of s.R. 20 to mockingbird hill jct. The anomalies located in these two sections were evaluated as the pipe was excavated prior to removal and further verified the accuracy of the data from the wirelines. Approx 120 ft of tl-442 located in a casing under the railroad and s.R. 20 was removed and replacement pipe was installed. An anomaly located on the cased pipe that was removed was evaluated and further verified the accuracy of the data from the wirelines. |
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