Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2025-08-11 — OK
Operator
Transcontinental Gas Pipe Line Company
Cause
Material Failure Of Pipe Or Weld
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$165,000
Incident datetime
2025-08-11 00:00 UTC
Report number
Location
OK
Narrative
Anomaly was detected during an emat tool run, which was investigated. No indications of a leak were immediately present. Gas was detected intermittently from a crack like defect in the long seam only after coating removal. The segment was already isolated due to the anomaly digs. The segment was drawn down via customers and recompression with the remaining volume being vented to atmosphere. Pipe segment was cutout and sent for analysis. The segment has since been replaced and the line has been placed back into service. Supplemental report will be provided once the metallurgical analysis is completed.
Detailed record list
Report Received Date
2025-08-11 00:00:00
Iyear
2025
Report Number
20250088
Supplemental Number
41242
Report Type
Original
Operator Id
19570
Name
Transcontinental Gas Pipe Line Company
Operator Street Address
One Williams Center Md 43-4
Operator City Name
Tulsa
Operator State Abbreviation
OK
Operator Postal Code
74172
Time Zone
Eastern
Daylight Savings Ind
Yes
Location Latitude
41.29064692
Location Longitude
-77.46100261
Nrc Rpt Num
1437079
Additional Nrc Report Numbers
1437159
Commodity Released Type
Natural Gas
Unintentional Release
0.22
Intentional Release
4190
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
Communication State Fed Ind
No
Ignite Ind
No
Upstream Action Taken
Valve Closure
Downstream Action Taken
Valve Closure
Num Pub Evacuated
0
On Off Shore
Onshore
Onshore State Abbreviation
Pa
Onshore Postal Code
17745
Onshore City Name
Haneyville
Onshore County Name
Clinton
Designated Location
Milepost
Designated Name
170.62
Pipe Fac Name
Leidy Line - A
Segment Name
Leida-T-T-T
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
48
Other Underground Facilities
No
Crossing
No
Pipe Facility Type
Interstate
System Part Involved
Onshore Pipeline, Including Valve Sites
Item Involved
Pipe
Pipe Type
Pipe Seam
Pipe Diameter
23.375
Pipe Wall Thickness
0.375
Pipe Smys
52000
Pipe Specification
Api-5l
Pipe Seam Type
Dsaw
Pipe Manufacturer
Bethlehem Steel Corporation
Pipe Coating Type
Coal Tar
Coating Applied Ind
Unknown
Installation Year
1958
Manufactured Year
Unknown
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Crack
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
634
Heat Damage Ind
No
Non Heat Damage Ind
No
Did Occur In Mca Ind
No
Est Cost Oper Paid
5000
Est Cost Unintentional Release
1
Est Cost Intentional Release
13534
Est Cost Prop Damage
165000
Est Cost Emergency
10000
Est Cost Other
0
Gas Cost In Mcf
3.23
Prpty
193535
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
913
Gas Flow In Pipe In Mcf
0
Mop Psig
1200
Mop Cfr Section
192.619(C)
Maop Established Date
1958-12-02 00:00:00
Maop Reversal Flow Ind
No
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
No
Gas Required Odorized Ind
No
Upstream Valve Type Ind
Remotely Controlled
Downstream Valve Type Ind
Remotely Controlled
Length Segment Isolated
91608
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
No
Scada Conf Ind
No
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
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
Leak was only detectable after the pipe coating was removed.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Material Failure Of Pipe Or Weld
Cause Details
Original Manufacturing-Related (Not Girth Weld Or Other Welds Formed In The Field)
Pwjf Failure Type
Original Manufacturing-Related (Not Girth Weld Or Other Welds Formed In The Field)
Field Exam Ind
Yes
Still Under Invest Ind
Yes
Other Factor
Yes
Other Factor Details
To Be Determined
Pwf Additional Other Ind
Yes
Additional Other Details
To Be Determined
Post Constr Pressure Test Val
920
Collected Data Ind
Yes
Axial Magnetic Flx Lkg Ind
Yes
Geometry Deformation Ind
Yes
Emat Ind
Yes
Axial Recent Year
2023
Axial Rcnt Propul Method
Free Swimming
Axial Rcnt Attuned Detect
Other
Axial Rcnt Atnd Dtct Dtls
Dual Magnetizer (Amfl & Low Field Mfl) For Hard Spots And Metal Loss.
Axial Previous Year
2016
Axial Prev Propul Method
Free Swimming
Axial Prev Attuned Detect
Metal Loss
Axial Prev Atnd Dtct Metal
High Resolution
Geometry Recent Year
2023
Geometry Rcnt Propul Method
Free Swimming
Geometry Rcnt Resolution
High Resolution
Geometrt Rcnt Measur Cups
No Cups
Geometry Previous Year
2016
Geometry Prev Propul Method
Free Swimming
Geometry Prev Resolution
High Resolution
Geometrt Prev Measur Cups
No Cups
Emat Recent Year
2023
Emat Rcnt Propul Method
Free Swimming
Emat Previous Year
2016
Emat Prev Propul Method
Free Swimming
Has Hydrtst Conduc Before Ind
No
Direct Asmnt Conducted
No
Non Destructive Exam Ind
No
Preparer Name
K****** C***
Preparer Title
Regulatory Compliance Specialist Sr
Preparer Email
K***********@w*******.com
Preparer Telephone
267-454-8569
Authorizer Name
E*** W****
Authorizer Title
Manager Pipeline Safety
Authorizer Telephone
281-536-9504
Authorizer Email
E*********@w*******.com
Narrative
Anomaly was detected during an emat tool run, which was investigated. No indications of a leak were immediately present. Gas was detected intermittently from a crack like defect in the long seam only after coating removal. The segment was already isolated due to the anomaly digs. The segment was drawn down via customers and recompression with the remaining volume being vented to atmosphere. Pipe segment was cutout and sent for analysis. The segment has since been replaced and the line has been placed back into service. Supplemental report will be provided once the metallurgical analysis is completed.
| Report Received Date | 2025-08-11 00:00:00 |
|---|---|
| Iyear | 2025 |
| Report Number | 20250088 |
| Supplemental Number | 41242 |
| Report Type | Original |
| Operator Id | 19570 PHMSA Enforcement |
| Name | Transcontinental Gas Pipe Line Company |
| Operator Street Address | One Williams Center Md 43-4 |
| Operator City Name | Tulsa |
| Operator State Abbreviation | OK |
| Operator Postal Code | 74172 |
| Time Zone | Eastern |
| Daylight Savings Ind | Yes |
| Location Latitude | 41.29064692 Google Maps OpenStreetMap |
| Location Longitude | -77.46100261 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1437079 NRC Report How to search |
| Additional Nrc Report Numbers | 1437159 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 0.22 |
| Intentional Release | 4190 |
| 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 |
| Communication State Fed Ind | No |
| Ignite Ind | No |
| Upstream Action Taken | Valve Closure |
| Downstream Action Taken | Valve Closure |
| Num Pub Evacuated | 0 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Pa |
| Onshore Postal Code | 17745 |
| Onshore City Name | Haneyville |
| Onshore County Name | Clinton |
| Designated Location | Milepost |
| Designated Name | 170.62 |
| Pipe Fac Name | Leidy Line - A |
| Segment Name | Leida-T-T-T |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 48 |
| Other Underground Facilities | No |
| Crossing | No |
| Pipe Facility Type | Interstate |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| Item Involved | Pipe |
| Pipe Type | Pipe Seam |
| Pipe Diameter | 23.375 |
| Pipe Wall Thickness | 0.375 |
| Pipe Smys | 52000 |
| Pipe Specification | Api-5l |
| Pipe Seam Type | Dsaw |
| Pipe Manufacturer | Bethlehem Steel Corporation |
| Pipe Coating Type | Coal Tar |
| Coating Applied Ind | Unknown |
| Installation Year | 1958 |
| Manufactured Year | Unknown |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Crack |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 634 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Did Occur In Mca Ind | No |
| Est Cost Oper Paid | 5000 |
| Est Cost Unintentional Release | 1 |
| Est Cost Intentional Release | 13534 |
| Est Cost Prop Damage | 165000 |
| Est Cost Emergency | 10000 |
| Est Cost Other | 0 |
| Gas Cost In Mcf | 3.23 |
| Prpty | 193535 |
| 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 | 913 |
| Gas Flow In Pipe In Mcf | 0 |
| Mop Psig | 1200 |
| Mop Cfr Section | 192.619(C) View CFR 49 §192 |
| Maop Established Date | 1958-12-02 00:00:00 |
| Maop Reversal Flow Ind | No |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Pressure Restriction Ind | No |
| Gas Required Odorized Ind | No |
| Upstream Valve Type Ind | Remotely Controlled |
| Downstream Valve Type Ind | Remotely Controlled |
| Length Segment Isolated | 91608 |
| 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 | No |
| Scada Conf Ind | No |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| 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 | Leak was only detectable after the pipe coating was removed. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Material Failure Of Pipe Or Weld |
| Cause Details | Original Manufacturing-Related (Not Girth Weld Or Other Welds Formed In The Field) |
| Pwjf Failure Type | Original Manufacturing-Related (Not Girth Weld Or Other Welds Formed In The Field) |
| Field Exam Ind | Yes |
| Still Under Invest Ind | Yes |
| Other Factor | Yes |
| Other Factor Details | To Be Determined |
| Pwf Additional Other Ind | Yes |
| Additional Other Details | To Be Determined |
| Post Constr Pressure Test Val | 920 |
| Collected Data Ind | Yes |
| Axial Magnetic Flx Lkg Ind | Yes |
| Geometry Deformation Ind | Yes |
| Emat Ind | Yes |
| Axial Recent Year | 2023 |
| Axial Rcnt Propul Method | Free Swimming |
| Axial Rcnt Attuned Detect | Other |
| Axial Rcnt Atnd Dtct Dtls | Dual Magnetizer (Amfl & Low Field Mfl) For Hard Spots And Metal Loss. |
| Axial Previous Year | 2016 |
| Axial Prev Propul Method | Free Swimming |
| Axial Prev Attuned Detect | Metal Loss |
| Axial Prev Atnd Dtct Metal | High Resolution |
| Geometry Recent Year | 2023 |
| Geometry Rcnt Propul Method | Free Swimming |
| Geometry Rcnt Resolution | High Resolution |
| Geometrt Rcnt Measur Cups | No Cups |
| Geometry Previous Year | 2016 |
| Geometry Prev Propul Method | Free Swimming |
| Geometry Prev Resolution | High Resolution |
| Geometrt Prev Measur Cups | No Cups |
| Emat Recent Year | 2023 |
| Emat Rcnt Propul Method | Free Swimming |
| Emat Previous Year | 2016 |
| Emat Prev Propul Method | Free Swimming |
| Has Hydrtst Conduc Before Ind | No |
| Direct Asmnt Conducted | No |
| Non Destructive Exam Ind | No |
| Preparer Name | K****** C*** |
| Preparer Title | Regulatory Compliance Specialist Sr |
| Preparer Email | K***********@w*******.com |
| Preparer Telephone | 267-454-8569 |
| Authorizer Name | E*** W**** |
| Authorizer Title | Manager Pipeline Safety |
| Authorizer Telephone | 281-536-9504 |
| Authorizer Email | E*********@w*******.com |
| Narrative | Anomaly was detected during an emat tool run, which was investigated. No indications of a leak were immediately present. Gas was detected intermittently from a crack like defect in the long seam only after coating removal. The segment was already isolated due to the anomaly digs. The segment was drawn down via customers and recompression with the remaining volume being vented to atmosphere. Pipe segment was cutout and sent for analysis. The segment has since been replaced and the line has been placed back into service. Supplemental report will be provided once the metallurgical analysis is completed. |
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