Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2024-08-16 — TX
Operator
Phillips 66 Pipeline Llc
Cause
Corrosion Failure
Commodity
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$1,845,336
Incident datetime
2024-08-16 00:00 UTC
Report number
Location
TX
Narrative
Company operators were notified of a possible release by a 3rd party operator in a shared right of way. At 18:00 on july 18, 2024, company personnel were able to confirm ownership of the leak and began activation of the company response plan. The pipeline was isolated, and all notifications were made at this time to local, state and federal agencies. Simultaneously, the local team began excavation and blowdown operations to allow for investigation and repair of the release. A temporary leak clamp was installed, and the line was returned to service on july 21, 2024, at 14:15. The line was cut out and replaced on january 25, 2025. After receiving the final metallurgical report, on april 7, 2025, it was determined the release was due to external corrosion caused by local environmental conditions. Extensive field testing was done at the leak site that indicates 3rd party influence due to recently installed cathodic protection systems in close proximity to the pipeline.
Detailed record list
Report Received Date
2024-08-16 00:00:00
Iyear
2024
Report Number
20240195
Supplemental Number
40778
Report Type
Supplemental Final
Operator Id
31684
Name
Phillips 66 Pipeline Llc
Operator Street Address
2331 Citywest Blvd
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77042
Time Zone
Central
Daylight Savings Ind
Yes
Location Latitude
29.759136
Location Longitude
-95.903791
Commodity Released Type
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Commodity Subtype
Other Hvl
Commodity Details
Y Grade
Unintentional Release Bbls
67
Intentional Release Bbls
4000
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Other
Accident Details
3rd Party Operator Call
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
Communication State Fed Ind
No
Nrc Rpt Num
1405215
Additional Nrc Report Numbers
1405384
Ignite Ind
No
Upstream Action Taken
Valve Closure
Upstream Valve Type Ind
Remotely Controlled
Downstream Action Taken
Valve Closure
Downstream Valve Type Ind
Remotely Controlled
Num Pub Evacuated
0
Pipe Fac Name
Ez-01
Segment Name
Brookshire To Sweeny
Onshore State Abbreviation
Tx
Onshore Postal Code
77423
Onshore City Name
Brookshire
Onshore County Name
Waller
Designated Location
Milepost
Designated Name
383
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
96
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Pipe
Pipe Type
Pipe Body
Puddle Weld Ind
No
Pipe Diameter
10
Pipe Wall Thickness
0.203
Pipe Smys
42000
Pipe Specification
X-42 - 5lx
Pipe Seam Type
Erw - High Frequency
Pipe Manufacturer
National Tube
Pipe Coating Type
Coal Tar
Coating Applied Ind
Unknown
Installation Year
1954
Manufactured Year
Unknown
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Pinhole
Wildlife Impact Ind
No
Soil Contamination
No
Long Term Assessment
No
Remediation Ind
No
Water Contam Ind
No
Could Be Hca
No
Commodity Reached Hca
No
Est Cost Oper Paid
15000
Est Cost Gas Released
1500
Est Cost Prop Damage
1845336
Est Cost Emergency
832925
Est Cost Environmental
0
Est Cost Other
0
Prpty
2694761
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Accident Psig
830
Mop Psig
1105
Mop Cfr Section
Internal Design Pressure �195.406(A)(1)
Maop Established Date
2002-08-01 00:00:00
Maop Reversal Flow Ind
No
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
36960
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
No
Scada Conf Ind
No
Cpm In Place Ind
Yes
Cpm Operating Ind
Yes
Cpm Functional Ind
Yes
Cpm Detection Ind
No
Cpm Conf Ind
No
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
No alarm thresholds were crossed to alert the controller.
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
Stray Current Corrosion Ind
Yes
Stray Current Type
Direct Current
Stray Current Details
3rd Party Influence
Metallurgical Basis Ind
Yes
Underground Location
Yes
Under Cathodic Protection Ind
Yes
Cathodic Pro Start Year
1953
Shielding Evident
Yes
Cathodic Survey Type
Yes
Cp Annual Survey Ind
Yes
Close Interval Survey Ind
Yes
Cp Annual Survey Year
2024
Close Interval Survey Year
2024
Prior Damage
Yes
Collected Data Ind
Yes
Axial Magnetic Flx Lkg Ind
Yes
Axial Recent Year
2021
Axial Rcnt Propul Method
Free Swimming
Axial Rcnt Attuned Detect
Metal Loss
Axial Rcnt Atnd Dtct Metal
Standard Resolution
Axial Previous Year
2016
Axial Prev Propul Method
Free Swimming
Axial Prev Attuned Detect
Metal Loss
Axial Prev Atnd Dtct Metal
Standard Resolution
Has Hydrtst Conduc Before Ind
No
Direct Asmnt Conducted
Yes, But The Point Of The Accident Was Not Identified As A Dig Site
Direct Asmnt Pnt Not Idntf Yr
2022
Asmnt Other Rcnt Ind
Yes
Asmnt Other Type
Anomaly
Asmnt Other Rcnt Year
2022
Non Destructive Exam Ind
No
Preparer Name
M****** B*********
Preparer Title
Dot Specialist
Preparer Email
M*******************@p**.com
Preparer Telephone
7134122371
Prepared Date
2025-04-17 00:00:00
Local Contact Name
M****** B*********
Local Contact Email
M*******************@p**.com
Local Contact Telephone
7124122371
Authorizer Name
J*** S*****
Authorizer Telephone
7134494615
Authorizer Title
Director Of Dot Compliance
Authorizer Email
J************@p**.com
Narrative
Company operators were notified of a possible release by a 3rd party operator in a shared right of way. At 18:00 on july 18, 2024, company personnel were able to confirm ownership of the leak and began activation of the company response plan. The pipeline was isolated, and all notifications were made at this time to local, state and federal agencies. Simultaneously, the local team began excavation and blowdown operations to allow for investigation and repair of the release. A temporary leak clamp was installed, and the line was returned to service on july 21, 2024, at 14:15. The line was cut out and replaced on january 25, 2025. After receiving the final metallurgical report, on april 7, 2025, it was determined the release was due to external corrosion caused by local environmental conditions. Extensive field testing was done at the leak site that indicates 3rd party influence due to recently installed cathodic protection systems in close proximity to the pipeline.
| Report Received Date | 2024-08-16 00:00:00 |
|---|---|
| Iyear | 2024 |
| Report Number | 20240195 |
| Supplemental Number | 40778 |
| Report Type | Supplemental Final |
| Operator Id | 31684 PHMSA Enforcement |
| Name | Phillips 66 Pipeline Llc |
| Operator Street Address | 2331 Citywest Blvd |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77042 |
| Time Zone | Central |
| Daylight Savings Ind | Yes |
| Location Latitude | 29.759136 Google Maps OpenStreetMap |
| Location Longitude | -95.903791 Google Maps OpenStreetMap |
| Commodity Released Type | Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions |
| Commodity Subtype | Other Hvl |
| Commodity Details | Y Grade |
| Unintentional Release Bbls | 67 |
| Intentional Release Bbls | 4000 |
| Recovered Bbls | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Other |
| Accident Details | 3rd Party Operator Call |
| 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 |
| Communication State Fed Ind | No |
| Nrc Rpt Num | 1405215 NRC Report How to search |
| Additional Nrc Report Numbers | 1405384 |
| Ignite Ind | No |
| Upstream Action Taken | Valve Closure |
| Upstream Valve Type Ind | Remotely Controlled |
| Downstream Action Taken | Valve Closure |
| Downstream Valve Type Ind | Remotely Controlled |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Ez-01 |
| Segment Name | Brookshire To Sweeny |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 77423 |
| Onshore City Name | Brookshire |
| Onshore County Name | Waller |
| Designated Location | Milepost |
| Designated Name | 383 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 96 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Puddle Weld Ind | No |
| Pipe Diameter | 10 |
| Pipe Wall Thickness | 0.203 |
| Pipe Smys | 42000 |
| Pipe Specification | X-42 - 5lx |
| Pipe Seam Type | Erw - High Frequency |
| Pipe Manufacturer | National Tube |
| Pipe Coating Type | Coal Tar |
| Coating Applied Ind | Unknown |
| Installation Year | 1954 |
| Manufactured Year | Unknown |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Pinhole |
| Wildlife Impact Ind | No |
| Soil Contamination | No |
| Long Term Assessment | No |
| Remediation Ind | No |
| Water Contam Ind | No |
| Could Be Hca | No |
| Commodity Reached Hca | No |
| Est Cost Oper Paid | 15000 |
| Est Cost Gas Released | 1500 |
| Est Cost Prop Damage | 1845336 |
| Est Cost Emergency | 832925 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 2694761 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Accident Psig | 830 |
| Mop Psig | 1105 |
| Mop Cfr Section | Internal Design Pressure �195.406(A)(1) View CFR 49 §192 |
| Maop Established Date | 2002-08-01 00:00:00 |
| Maop Reversal Flow Ind | No |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 36960 |
| 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 | No |
| Scada Conf Ind | No |
| Cpm In Place Ind | Yes |
| Cpm Operating Ind | Yes |
| Cpm Functional Ind | Yes |
| Cpm Detection Ind | No |
| Cpm Conf Ind | No |
| 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 | No alarm thresholds were crossed to alert the controller. |
| 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 |
| Stray Current Corrosion Ind | Yes |
| Stray Current Type | Direct Current |
| Stray Current Details | 3rd Party Influence |
| Metallurgical Basis Ind | Yes |
| Underground Location | Yes |
| Under Cathodic Protection Ind | Yes |
| Cathodic Pro Start Year | 1953 |
| Shielding Evident | Yes |
| Cathodic Survey Type | Yes |
| Cp Annual Survey Ind | Yes |
| Close Interval Survey Ind | Yes |
| Cp Annual Survey Year | 2024 |
| Close Interval Survey Year | 2024 |
| Prior Damage | Yes |
| Collected Data Ind | Yes |
| Axial Magnetic Flx Lkg Ind | Yes |
| Axial Recent Year | 2021 |
| Axial Rcnt Propul Method | Free Swimming |
| Axial Rcnt Attuned Detect | Metal Loss |
| Axial Rcnt Atnd Dtct Metal | Standard Resolution |
| Axial Previous Year | 2016 |
| Axial Prev Propul Method | Free Swimming |
| Axial Prev Attuned Detect | Metal Loss |
| Axial Prev Atnd Dtct Metal | Standard Resolution |
| Has Hydrtst Conduc Before Ind | No |
| Direct Asmnt Conducted | Yes, But The Point Of The Accident Was Not Identified As A Dig Site |
| Direct Asmnt Pnt Not Idntf Yr | 2022 |
| Asmnt Other Rcnt Ind | Yes |
| Asmnt Other Type | Anomaly |
| Asmnt Other Rcnt Year | 2022 |
| Non Destructive Exam Ind | No |
| Preparer Name | M****** B********* |
| Preparer Title | Dot Specialist |
| Preparer Email | M*******************@p**.com |
| Preparer Telephone | 7134122371 |
| Prepared Date | 2025-04-17 00:00:00 |
| Local Contact Name | M****** B********* |
| Local Contact Email | M*******************@p**.com |
| Local Contact Telephone | 7124122371 |
| Authorizer Name | J*** S***** |
| Authorizer Telephone | 7134494615 |
| Authorizer Title | Director Of Dot Compliance |
| Authorizer Email | J************@p**.com |
| Narrative | Company operators were notified of a possible release by a 3rd party operator in a shared right of way. At 18:00 on july 18, 2024, company personnel were able to confirm ownership of the leak and began activation of the company response plan. The pipeline was isolated, and all notifications were made at this time to local, state and federal agencies. Simultaneously, the local team began excavation and blowdown operations to allow for investigation and repair of the release. A temporary leak clamp was installed, and the line was returned to service on july 21, 2024, at 14:15. The line was cut out and replaced on january 25, 2025. After receiving the final metallurgical report, on april 7, 2025, it was determined the release was due to external corrosion caused by local environmental conditions. Extensive field testing was done at the leak site that indicates 3rd party influence due to recently installed cathodic protection systems in close proximity to the pipeline. |
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