Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2025-05-05 — TX
Operator
Permian Express Partners Llc
Cause
Corrosion Failure
Commodity
Crude Oil
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$1,000,000
Incident datetime
2025-05-05 06:23
Report number
Location
TX
Narrative
On 05/05/2025 at approximately 06:23, the control center received scada indications of a release on the keller to midlothian segment of the 16-inch ringgold to corsicana system. The line was shutdown and upstream and downstream valves closed to isolate the segment. Operations personnel were dispatched and began field investigations to locate a potential release. On 05/06/2025 at approximately 14:10, field personnel discovered crude oil on the ground near mp 90.82 in the arlington/ft. Worth area. Once excavated, both crude oil and sewer water were discovered in the excavation. The location of the leak was where a 48-inch city of fort worth sewer line crossed under the keller to midlothian segment. Investigation in the ditch found the concrete sewer line appeared to have failed and was expelling sewage into the the immediate area in and around the keller to midlothian pipeline. Approximately 6,600 barrels of crude oil was released. The majority of the released crude traveled through the failed sewer pipe to a water treatment facility approximately 4 miles to the northeast. Cleanup contractors were mobilized to cleanup product and remove impacted soil at the failure site. Pep coordinated cleanup efforts at the water treatment facility with the city. The line was restarted on 5/9/25 at 22:00 by affecting a stopple and bypass around the failed section. After the pipeline was restarted the failed section was cold cut and removed from the ground, prepped and shipped to a 3rd party laboratory for analysis. The cause of the accident is still under investigation. A supplemental report will be submitted once complete. Supplemental & final: the metallurgical analysis determined that the failure was due to external corrosion. The cause of the external corrosion was microbiologically induced corrosion (mic) with high levels of sulfur oxidizing bacteria (sob), which was more likely than not caused by sewage contamination of soil and water from the failed city of fort worth sewer line at the rupture location. The aggressive corrosion thinned the wall of the pipe that spanned the length of and led to the rupture.
Detailed record list
Report Received Date
2025-06-05 00:00:00
Iyear
2025
Report Number
20250139
Supplemental Number
41587
Report Type
Supplemental Final
Operator Id
39596
Name
Permian Express Partners Llc
Operator Street Address
1300 Main Street
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Local Datetime
2025-05-05 06:23:00
Time Zone
Central
Daylight Savings Ind
Yes
Location Latitude
32.728841
Location Longitude
-97.189752
Commodity Released Type
Crude Oil
Unintentional Release Bbls
6600
Recovered Bbls
6600
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Or Pack Calculations)
Incident Identified Datetime
2025-05-05 06:23:00
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Status When Identified
Normal Operation, Includes Pauses Between Batches And During Maintenance
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2025-05-05 06:25:00
Restart Datetime
2025-05-09 22:00:00
Communication State Fed Ind
No
On Site Datetime
2025-05-05 07:00:00
Confirmed Discovery Datetime
2025-05-06 14:10:00
Nrc Rpt Datetime
2025-05-06 15:08:00
Nrc Rpt Num
1430396
Additional Nrc Report Numbers
1430457
Ignite Ind
No
Upstream Action Taken
Valve Closure
Upstream Valve Close Datetime
2025-05-05 06:28:00
Upstream Valve Type Ind
Remotely Controlled
Downstream Action Taken
Valve Closure
Downstream Vlv Close Datetime
2025-05-05 06:30:00
Downstream Valve Type Ind
Remotely Controlled
Notify Qualified Indiv Ind
Yes
Qualified Indiv Notif Datetime
2025-05-06 14:06:00
Oil Spill Removal Org Ind
Yes
Osro Activated Datetime
2025-05-06 15:00:00
Osro Arrived On Site Dt
5/6/2025 18:00
Num Pub Evacuated
0
Pipe Fac Name
Ringgold To Corsicana
Segment Name
22002.01 - 16inch Corsicana To Keller
Onshore State Abbreviation
Tx
Onshore Postal Code
76013
Onshore City Name
Arlington
Onshore County Name
Tarrant
Designated Location
Milepost
Designated Name
90.82
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
64
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Pipe
Pipe Type
Pipe Body
Puddle Weld Ind
No
Pipe Diameter
16
Pipe Wall Thickness
0.25
Pipe Smys
42000
Pipe Specification
Api-5l X-42
Pipe Seam Type
Erw - Low Frequency
Pipe Manufacturer
Unknown
Pipe Coating Type
Coal Tar
Coating Applied Ind
Unknown
Installation Year
1953
Manufactured Year
Unknown
Material Involved
Carbon Steel
Release Type
Rupture
Leak Type
Other
Leak Type Other
Still Under Investigation
Rupture Orient
Longitudinal
Rupture Width
13
Rupture Length
3
Wildlife Impact Ind
No
Soil Contamination
Yes
Long Term Assessment
No
Remediation Ind
Yes
Soil Remed Ind
Yes
Water Contam Ind
No
Could Be Hca
Yes
Commodity Reached Hca
Yes
High Pop Ind
Yes
High Pop Yes No
Yes
Est Cost Oper Paid
7600000
Est Cost Gas Released
0
Est Cost Prop Damage
1000000
Est Cost Emergency
100000
Est Cost Environmental
2000
Est Cost Other
0
Prpty
8702000
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Accident Psig
773
Mop Psig
811
Mop Cfr Section
Subpart E Pressure Test �195.406(A)(3)
Maop Established Date
1998-01-01 00:00:00
Maop Reversal Flow Ind
No
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
120331
Internal Inspection Ind
Yes
Operation Complications Ind
No
Pipeline Function
> 20% Smys Regulated Transmission
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
Yes
Scada Conf Ind
Yes
Cpm In Place Ind
Yes
Cpm Operating Ind
Yes
Cpm Functional Ind
Yes
Cpm Detection Ind
Yes
Cpm Conf Ind
Yes
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
A review of the accident determined that there were no control room actions that contributed to the event.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Corrosion Failure
Cause Details
External Corrosion
Internal External
External Corrosion
Visual Exam Results
Localized Pitting
Microbiological Corrosion Ind
Yes
Metallurgical Basis Ind
Yes
Underground Location
Yes
Under Cathodic Protection Ind
Yes
Cathodic Pro Start Year
1953
Shielding Evident
No
Cathodic Survey Type
Yes
Cp Annual Survey Ind
Yes
Close Interval Survey Ind
Yes
Other Cp Survey Ind
Yes
Cp Annual Survey Year
2025
Close Interval Survey Year
2025
Other Cp Survey Year
2022
Other Cp Survey Details
Depolarized Close Interval Survey
Prior Damage
Yes
Other Type
Unknown
Unknown Subtype
Still Under Investigation, Cause Of Accident To Be Determined* (*supplemental Report Required)
Collected Data Ind
Yes
Axial Magnetic Flx Lkg Ind
Yes
Ultrasonic Ind
Yes
Geometry Deformation Ind
Yes
Axial Recent Year
2025
Axial Rcnt Propul Method
Free Swimming
Axial Rcnt Attuned Detect
Metal Loss
Axial Rcnt Atnd Dtct Metal
High Resolution
Axial Previous Year
2023
Axial Prev Propul Method
Free Swimming
Axial Prev Attuned Detect
Metal Loss
Axial Prev Atnd Dtct Metal
High Resolution
Ultrasonic Recent Year
2022
Ultrasonic Rcnt Propul Method
Free Swimming
Ultrasonic Rcnt Attuned
Crack
Ultr Previous Year
2017
Ultra Prev Propul Method
Free Swimming
Ultra Prev Attuned
Crack
Geometry Recent Year
2025
Geometry Rcnt Propul Method
Free Swimming
Geometry Rcnt Resolution
High Resolution
Geometrt Rcnt Measur Cups
Inside Ili Cups
Geometry Previous Year
2024
Geometry Prev Propul Method
Free Swimming
Geometry Prev Resolution
High Resolution
Geometrt Prev Measur Cups
Inside Ili Cups
Has Hydrtst Conduc Before Ind
Yes
Hydrtst Most Rcnt Year
1994
Hydrtst Most Rcnt Pressure
1110
Direct Asmnt Conducted
No
Non Destructive Exam Ind
No
Preparer Name
T*** N*******
Preparer Title
Director - Dot Compliance
Preparer Email
T************@e*************.com
Preparer Telephone
713-989-7126
Prepared Date
2025-11-14 00:00:00
Authorizer Name
T*** N*******
Authorizer Telephone
713-989-7126
Authorizer Title
Director - Dot Compliance
Authorizer Email
T************@e*************.com
Narrative
On 05/05/2025 at approximately 06:23, the control center received scada indications of a release on the keller to midlothian segment of the 16-inch ringgold to corsicana system. The line was shutdown and upstream and downstream valves closed to isolate the segment. Operations personnel were dispatched and began field investigations to locate a potential release. On 05/06/2025 at approximately 14:10, field personnel discovered crude oil on the ground near mp 90.82 in the arlington/ft. Worth area. Once excavated, both crude oil and sewer water were discovered in the excavation. The location of the leak was where a 48-inch city of fort worth sewer line crossed under the keller to midlothian segment. Investigation in the ditch found the concrete sewer line appeared to have failed and was expelling sewage into the the immediate area in and around the keller to midlothian pipeline. Approximately 6,600 barrels of crude oil was released. The majority of the released crude traveled through the failed sewer pipe to a water treatment facility approximately 4 miles to the northeast. Cleanup contractors were mobilized to cleanup product and remove impacted soil at the failure site. Pep coordinated cleanup efforts at the water treatment facility with the city. The line was restarted on 5/9/25 at 22:00 by affecting a stopple and bypass around the failed section. After the pipeline was restarted the failed section was cold cut and removed from the ground, prepped and shipped to a 3rd party laboratory for analysis. The cause of the accident is still under investigation. A supplemental report will be submitted once complete. Supplemental & final: the metallurgical analysis determined that the failure was due to external corrosion. The cause of the external corrosion was microbiologically induced corrosion (mic) with high levels of sulfur oxidizing bacteria (sob), which was more likely than not caused by sewage contamination of soil and water from the failed city of fort worth sewer line at the rupture location. The aggressive corrosion thinned the wall of the pipe that spanned the length of and led to the rupture.
| Report Received Date | 2025-06-05 00:00:00 |
|---|---|
| Iyear | 2025 |
| Report Number | 20250139 |
| Supplemental Number | 41587 |
| Report Type | Supplemental Final |
| Operator Id | 39596 PHMSA Enforcement |
| Name | Permian Express Partners Llc |
| Operator Street Address | 1300 Main Street |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77002 |
| Local Datetime | 2025-05-05 06:23:00 |
| Time Zone | Central |
| Daylight Savings Ind | Yes |
| Location Latitude | 32.728841 Google Maps OpenStreetMap |
| Location Longitude | -97.189752 Google Maps OpenStreetMap |
| Commodity Released Type | Crude Oil |
| Unintentional Release Bbls | 6600 |
| Recovered Bbls | 6600 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Or Pack Calculations) |
| Incident Identified Datetime | 2025-05-05 06:23:00 |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Status When Identified | Normal Operation, Includes Pauses Between Batches And During Maintenance |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2025-05-05 06:25:00 |
| Restart Datetime | 2025-05-09 22:00:00 |
| Communication State Fed Ind | No |
| On Site Datetime | 2025-05-05 07:00:00 |
| Confirmed Discovery Datetime | 2025-05-06 14:10:00 |
| Nrc Rpt Datetime | 2025-05-06 15:08:00 |
| Nrc Rpt Num | 1430396 NRC Report How to search |
| Additional Nrc Report Numbers | 1430457 |
| Ignite Ind | No |
| Upstream Action Taken | Valve Closure |
| Upstream Valve Close Datetime | 2025-05-05 06:28:00 |
| Upstream Valve Type Ind | Remotely Controlled |
| Downstream Action Taken | Valve Closure |
| Downstream Vlv Close Datetime | 2025-05-05 06:30:00 |
| Downstream Valve Type Ind | Remotely Controlled |
| Notify Qualified Indiv Ind | Yes |
| Qualified Indiv Notif Datetime | 2025-05-06 14:06:00 |
| Oil Spill Removal Org Ind | Yes |
| Osro Activated Datetime | 2025-05-06 15:00:00 |
| Osro Arrived On Site Dt | 5/6/2025 18:00 |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Ringgold To Corsicana |
| Segment Name | 22002.01 - 16inch Corsicana To Keller |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 76013 |
| Onshore City Name | Arlington |
| Onshore County Name | Tarrant |
| Designated Location | Milepost |
| Designated Name | 90.82 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 64 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Puddle Weld Ind | No |
| Pipe Diameter | 16 |
| Pipe Wall Thickness | 0.25 |
| Pipe Smys | 42000 |
| Pipe Specification | Api-5l X-42 |
| Pipe Seam Type | Erw - Low Frequency |
| Pipe Manufacturer | Unknown |
| Pipe Coating Type | Coal Tar |
| Coating Applied Ind | Unknown |
| Installation Year | 1953 |
| Manufactured Year | Unknown |
| Material Involved | Carbon Steel |
| Release Type | Rupture |
| Leak Type | Other |
| Leak Type Other | Still Under Investigation |
| Rupture Orient | Longitudinal |
| Rupture Width | 13 |
| Rupture Length | 3 |
| Wildlife Impact Ind | No |
| Soil Contamination | Yes |
| Long Term Assessment | No |
| Remediation Ind | Yes |
| Soil Remed Ind | Yes |
| Water Contam Ind | No |
| Could Be Hca | Yes |
| Commodity Reached Hca | Yes |
| High Pop Ind | Yes |
| High Pop Yes No | Yes |
| Est Cost Oper Paid | 7600000 |
| Est Cost Gas Released | 0 |
| Est Cost Prop Damage | 1000000 |
| Est Cost Emergency | 100000 |
| Est Cost Environmental | 2000 |
| Est Cost Other | 0 |
| Prpty | 8702000 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Accident Psig | 773 |
| Mop Psig | 811 |
| Mop Cfr Section | Subpart E Pressure Test �195.406(A)(3) View CFR 49 §192 |
| Maop Established Date | 1998-01-01 00:00:00 |
| Maop Reversal Flow Ind | No |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 120331 |
| Internal Inspection Ind | Yes |
| Operation Complications Ind | No |
| Pipeline Function | > 20% Smys Regulated Transmission |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | Yes |
| Scada Conf Ind | Yes |
| Cpm In Place Ind | Yes |
| Cpm Operating Ind | Yes |
| Cpm Functional Ind | Yes |
| Cpm Detection Ind | Yes |
| Cpm Conf Ind | Yes |
| 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 | A review of the accident determined that there were no control room actions that contributed to the event. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Corrosion Failure |
| Cause Details | External Corrosion |
| Internal External | External Corrosion |
| Visual Exam Results | Localized Pitting |
| Microbiological Corrosion Ind | Yes |
| Metallurgical Basis Ind | Yes |
| Underground Location | Yes |
| Under Cathodic Protection Ind | Yes |
| Cathodic Pro Start Year | 1953 |
| Shielding Evident | No |
| Cathodic Survey Type | Yes |
| Cp Annual Survey Ind | Yes |
| Close Interval Survey Ind | Yes |
| Other Cp Survey Ind | Yes |
| Cp Annual Survey Year | 2025 |
| Close Interval Survey Year | 2025 |
| Other Cp Survey Year | 2022 |
| Other Cp Survey Details | Depolarized Close Interval Survey |
| Prior Damage | Yes |
| Other Type | Unknown |
| Unknown Subtype | Still Under Investigation, Cause Of Accident To Be Determined* (*supplemental Report Required) |
| Collected Data Ind | Yes |
| Axial Magnetic Flx Lkg Ind | Yes |
| Ultrasonic Ind | Yes |
| Geometry Deformation Ind | Yes |
| Axial Recent Year | 2025 |
| Axial Rcnt Propul Method | Free Swimming |
| Axial Rcnt Attuned Detect | Metal Loss |
| Axial Rcnt Atnd Dtct Metal | High Resolution |
| Axial Previous Year | 2023 |
| Axial Prev Propul Method | Free Swimming |
| Axial Prev Attuned Detect | Metal Loss |
| Axial Prev Atnd Dtct Metal | High Resolution |
| Ultrasonic Recent Year | 2022 |
| Ultrasonic Rcnt Propul Method | Free Swimming |
| Ultrasonic Rcnt Attuned | Crack |
| Ultr Previous Year | 2017 |
| Ultra Prev Propul Method | Free Swimming |
| Ultra Prev Attuned | Crack |
| Geometry Recent Year | 2025 |
| Geometry Rcnt Propul Method | Free Swimming |
| Geometry Rcnt Resolution | High Resolution |
| Geometrt Rcnt Measur Cups | Inside Ili Cups |
| Geometry Previous Year | 2024 |
| Geometry Prev Propul Method | Free Swimming |
| Geometry Prev Resolution | High Resolution |
| Geometrt Prev Measur Cups | Inside Ili Cups |
| Has Hydrtst Conduc Before Ind | Yes |
| Hydrtst Most Rcnt Year | 1994 |
| Hydrtst Most Rcnt Pressure | 1110 |
| Direct Asmnt Conducted | No |
| Non Destructive Exam Ind | No |
| Preparer Name | T*** N******* |
| Preparer Title | Director - Dot Compliance |
| Preparer Email | T************@e*************.com |
| Preparer Telephone | 713-989-7126 |
| Prepared Date | 2025-11-14 00:00:00 |
| Authorizer Name | T*** N******* |
| Authorizer Telephone | 713-989-7126 |
| Authorizer Title | Director - Dot Compliance |
| Authorizer Email | T************@e*************.com |
| Narrative | On 05/05/2025 at approximately 06:23, the control center received scada indications of a release on the keller to midlothian segment of the 16-inch ringgold to corsicana system. The line was shutdown and upstream and downstream valves closed to isolate the segment. Operations personnel were dispatched and began field investigations to locate a potential release. On 05/06/2025 at approximately 14:10, field personnel discovered crude oil on the ground near mp 90.82 in the arlington/ft. Worth area. Once excavated, both crude oil and sewer water were discovered in the excavation. The location of the leak was where a 48-inch city of fort worth sewer line crossed under the keller to midlothian segment. Investigation in the ditch found the concrete sewer line appeared to have failed and was expelling sewage into the the immediate area in and around the keller to midlothian pipeline. Approximately 6,600 barrels of crude oil was released. The majority of the released crude traveled through the failed sewer pipe to a water treatment facility approximately 4 miles to the northeast. Cleanup contractors were mobilized to cleanup product and remove impacted soil at the failure site. Pep coordinated cleanup efforts at the water treatment facility with the city. The line was restarted on 5/9/25 at 22:00 by affecting a stopple and bypass around the failed section. After the pipeline was restarted the failed section was cold cut and removed from the ground, prepped and shipped to a 3rd party laboratory for analysis. The cause of the accident is still under investigation. A supplemental report will be submitted once complete. Supplemental & final: the metallurgical analysis determined that the failure was due to external corrosion. The cause of the external corrosion was microbiologically induced corrosion (mic) with high levels of sulfur oxidizing bacteria (sob), which was more likely than not caused by sewage contamination of soil and water from the failed city of fort worth sewer line at the rupture location. The aggressive corrosion thinned the wall of the pipe that spanned the length of and led to the rupture. |
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