Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2023-06-29 — TX
Operator
Targa Downstream 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)
$750,000
Incident datetime
2023-06-29 00:00 UTC
Report number
Location
TX
Narrative
On 6/8/2023 targa personnel were in the process of remediating an immediate dig anomaly identified as a result of the latest ili tool run. After excavation, targa personnel were preparing the pipe for installation of a type b sleeve to repair the anomaly. While applying epoxy to fill the anomaly void prior to sleeve installation, a pinhole leak was discovered. Targa personnel immediately evacuated the location and contacted targa pipeline control who then isolated the affected segment via upstream and downstream remote actuated valves. Targa personnel used nitrogen and a pig to purge the pipeline free of hydrocarbons so permanent repairs could be made. The section of pipe was cut out and replaced with new pipe and pipeline was returned to service 6/12/2023. The accident was deemed reportable due to cost of repair exceeding $50,000 threshold.
Detailed record list
Report Received Date
2023-06-29 00:00:00
Iyear
2023
Report Number
20230139
Supplemental Number
38218
Report Type
Original Final
Operator Id
39823
Name
Targa Downstream Llc
Operator Street Address
811 Louisiana St. Suite 2100
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Time Zone
Central
Daylight Savings Ind
Yes
Location Latitude
33.27947753
Location Longitude
-97.75348256
Commodity Released Type
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Commodity Subtype
Lpg (Liquefied Petroleum Gas) / Ngl (Natural Gas Liquid)
Unintentional Release Bbls
0.1
Intentional Release Bbls
0.1
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Other
Accident Details
See Narrative Description.
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
1369500
Additional Nrc Report Numbers
1369605
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
East Chico To Junction
Segment Name
Gpx-F
Onshore State Abbreviation
Tx
Onshore Postal Code
76431
Onshore City Name
Chico
Onshore County Name
Wise
Designated Location
Survey Station No.
Designated Name
86+82
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Exposed Due To Excavation
Depth Of Cover
68
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Pipe
Pipe Type
Pipe Body
Puddle Weld Ind
No
Pipe Diameter
20
Pipe Wall Thickness
0.312
Pipe Smys
70000
Pipe Specification
Api 5l X70 Psl2
Pipe Seam Type
Erw - High Frequency
Pipe Manufacturer
Seah Steel Corp.
Pipe Coating Type
Fusion Bonded Epoxy(Fbe)
Coating Applied Ind
No
Installation Year
2019
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
0
Est Cost Gas Released
222
Est Cost Prop Damage
750000
Est Cost Emergency
0
Est Cost Environmental
0
Est Cost Other
0
Prpty
750222
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Accident Psig
655
Mop Psig
1440
Mop Cfr Section
Component Design Pressure �195.406(A)(2)
Maop Established Date
2019-10-01 00:00:00
Maop Reversal Flow Ind
No
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
48750
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
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
Targa personnel were on location at the time leak began. See narrative description.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Corrosion Failure
Cause Details
External Corrosion
Internal External
External Corrosion
Visual Exam Results
Other
Visual Exam Details
Interference Current From 3rd Party
Stray Current Corrosion Ind
Yes
Stray Current Type
Direct Current
Stray Current Details
Another Operator's Poorly Coated Pipeline That Paralleled Targa's Asset.
Other Basis Ind
Yes
Corrosion Basis Details
Close Interval Study
Underground Location
Yes
Under Cathodic Protection Ind
Yes
Cathodic Pro Start Year
2019
Shielding Evident
No
Cathodic Survey Type
Yes
Cp Annual Survey Ind
Yes
Close Interval Survey Ind
Yes
Cp Annual Survey Year
2022
Close Interval Survey Year
2022
Prior Damage
No
Collected Data Ind
Yes
Axial Magnetic Flx Lkg Ind
Yes
Geometry Deformation Ind
Yes
Axial Recent Year
2023
Axial Rcnt Propul Method
Free Swimming
Axial Rcnt Attuned Detect
Metal Loss
Axial Rcnt 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
Has Hydrtst Conduc Before Ind
No
Direct Asmnt Conducted
No
Non Destructive Exam Ind
No
Preparer Name
B**** R******
Preparer Title
Pipeline Compliance Specialist
Preparer Email
B*******@t*************.com
Preparer Telephone
8179440617
Prepared Date
2023-06-29 00:00:00
Local Contact Name
B**** R******
Local Contact Email
B*******@t*************.com
Local Contact Telephone
8179440617
Authorizer Name
B**** R******
Authorizer Telephone
8179440617
Authorizer Title
Pipeline Compliance Specialist
Authorizer Email
B*******@t*************.com
Narrative
On 6/8/2023 targa personnel were in the process of remediating an immediate dig anomaly identified as a result of the latest ili tool run. After excavation, targa personnel were preparing the pipe for installation of a type b sleeve to repair the anomaly. While applying epoxy to fill the anomaly void prior to sleeve installation, a pinhole leak was discovered. Targa personnel immediately evacuated the location and contacted targa pipeline control who then isolated the affected segment via upstream and downstream remote actuated valves. Targa personnel used nitrogen and a pig to purge the pipeline free of hydrocarbons so permanent repairs could be made. The section of pipe was cut out and replaced with new pipe and pipeline was returned to service 6/12/2023. The accident was deemed reportable due to cost of repair exceeding $50,000 threshold.
| Report Received Date | 2023-06-29 00:00:00 |
|---|---|
| Iyear | 2023 |
| Report Number | 20230139 |
| Supplemental Number | 38218 |
| Report Type | Original Final |
| Operator Id | 39823 PHMSA Enforcement |
| Name | Targa Downstream Llc |
| Operator Street Address | 811 Louisiana St. Suite 2100 |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77002 |
| Time Zone | Central |
| Daylight Savings Ind | Yes |
| Location Latitude | 33.27947753 Google Maps OpenStreetMap |
| Location Longitude | -97.75348256 Google Maps OpenStreetMap |
| Commodity Released Type | Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions |
| Commodity Subtype | Lpg (Liquefied Petroleum Gas) / Ngl (Natural Gas Liquid) |
| Unintentional Release Bbls | 0.1 |
| Intentional Release Bbls | 0.1 |
| Recovered Bbls | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Other |
| Accident Details | See Narrative Description. |
| 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 | 1369500 NRC Report How to search |
| Additional Nrc Report Numbers | 1369605 |
| 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 | East Chico To Junction |
| Segment Name | Gpx-F |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 76431 |
| Onshore City Name | Chico |
| Onshore County Name | Wise |
| Designated Location | Survey Station No. |
| Designated Name | 86+82 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Exposed Due To Excavation |
| Depth Of Cover | 68 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Puddle Weld Ind | No |
| Pipe Diameter | 20 |
| Pipe Wall Thickness | 0.312 |
| Pipe Smys | 70000 |
| Pipe Specification | Api 5l X70 Psl2 |
| Pipe Seam Type | Erw - High Frequency |
| Pipe Manufacturer | Seah Steel Corp. |
| Pipe Coating Type | Fusion Bonded Epoxy(Fbe) |
| Coating Applied Ind | No |
| Installation Year | 2019 |
| 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 | 0 |
| Est Cost Gas Released | 222 |
| Est Cost Prop Damage | 750000 |
| Est Cost Emergency | 0 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 750222 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Accident Psig | 655 |
| Mop Psig | 1440 |
| Mop Cfr Section | Component Design Pressure �195.406(A)(2) View CFR 49 §192 |
| Maop Established Date | 2019-10-01 00:00:00 |
| Maop Reversal Flow Ind | No |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 48750 |
| 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 | 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 | Targa personnel were on location at the time leak began. See narrative description. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Corrosion Failure |
| Cause Details | External Corrosion |
| Internal External | External Corrosion |
| Visual Exam Results | Other |
| Visual Exam Details | Interference Current From 3rd Party |
| Stray Current Corrosion Ind | Yes |
| Stray Current Type | Direct Current |
| Stray Current Details | Another Operator's Poorly Coated Pipeline That Paralleled Targa's Asset. |
| Other Basis Ind | Yes |
| Corrosion Basis Details | Close Interval Study |
| Underground Location | Yes |
| Under Cathodic Protection Ind | Yes |
| Cathodic Pro Start Year | 2019 |
| Shielding Evident | No |
| Cathodic Survey Type | Yes |
| Cp Annual Survey Ind | Yes |
| Close Interval Survey Ind | Yes |
| Cp Annual Survey Year | 2022 |
| Close Interval Survey Year | 2022 |
| Prior Damage | No |
| Collected Data Ind | Yes |
| Axial Magnetic Flx Lkg Ind | Yes |
| Geometry Deformation Ind | Yes |
| Axial Recent Year | 2023 |
| Axial Rcnt Propul Method | Free Swimming |
| Axial Rcnt Attuned Detect | Metal Loss |
| Axial Rcnt 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 |
| Has Hydrtst Conduc Before Ind | No |
| Direct Asmnt Conducted | No |
| Non Destructive Exam Ind | No |
| Preparer Name | B**** R****** |
| Preparer Title | Pipeline Compliance Specialist |
| Preparer Email | B*******@t*************.com |
| Preparer Telephone | 8179440617 |
| Prepared Date | 2023-06-29 00:00:00 |
| Local Contact Name | B**** R****** |
| Local Contact Email | B*******@t*************.com |
| Local Contact Telephone | 8179440617 |
| Authorizer Name | B**** R****** |
| Authorizer Telephone | 8179440617 |
| Authorizer Title | Pipeline Compliance Specialist |
| Authorizer Email | B*******@t*************.com |
| Narrative | On 6/8/2023 targa personnel were in the process of remediating an immediate dig anomaly identified as a result of the latest ili tool run. After excavation, targa personnel were preparing the pipe for installation of a type b sleeve to repair the anomaly. While applying epoxy to fill the anomaly void prior to sleeve installation, a pinhole leak was discovered. Targa personnel immediately evacuated the location and contacted targa pipeline control who then isolated the affected segment via upstream and downstream remote actuated valves. Targa personnel used nitrogen and a pig to purge the pipeline free of hydrocarbons so permanent repairs could be made. The section of pipe was cut out and replaced with new pipe and pipeline was returned to service 6/12/2023. The accident was deemed reportable due to cost of repair exceeding $50,000 threshold. |
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