Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2020-05-27 — 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)
$1,035,000
Incident datetime
2020-05-27 15:15
Report number
Location
TX
Narrative
A targa pipeline technician discovered vapor releasing on targa's peregrine pipeline row. The peregrine lateral transports y grade ngl. An investigation determined the release was coming from targa's pipeline and the pipeline was shut-down and de-inventoried using a pipeline pig pushed with nitrogen. The segment of pipeline that failed is a bored segment installed by directional drill. The length of the drill is 926 feet with a maximum depth below grade of 70 feet. Removing the pipeline to determine the cause of the failure has been difficult and time consuming because of the depth and length of the drilled segment. A corroded area with pitting that created a hole in the pipe wall has been found at the location where pipe was 30 feet below grade. The hole has been measured at 3/8 inch in diameter. An investigation with corrosion specialists is on-going to determine the cause of the corrosion. The failed segment will also be sent to a metallurgical lab for analysis. Targa will run an in-line inspection of the peregrine lateral to assess the integrity of the pipeline once the failed segment is replaced. Eight quail were found that were killed by the release. A texas state wildlife official was notified. The section of pipe where the leak occurred was installed by a horizontal directional drill. That section was replaced by a horizontal directional drill. The pipeline lost coating when installed by the horizontal directional drill due to rocky soil conditions. External corrosion was caused by dc stray current interference from a combined operation of cathodic protection systems for the nearby pipelines most prevalent before cathodic protection for the pipeline was activated after construction. The following measures are being adopted to a prevent a similar accident in the future. 1. Enhanced design study to include investigating r.O.W. For interference issues to include anodic/cathodic interference along with the purpose of ac/dc cathodic protection design. 2. Enhance native study to provide native reading and to investigate any possible interference issues before cp is commissioned. 3. Install interim galvanic cp systems on segments installed by horizontal directional drill for temporary protection until permanent cp system is energized. The ili run after repair did not identify any actional anomalies.
Detailed record list
Report Received Date
2020-06-26 00:00:00
Iyear
2020
Report Number
20200188
Supplemental Number
34527
Report Type
Supplemental 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
Local Datetime
2020-05-27 14:00:00
Location Latitude
31.83148
Location Longitude
-104.18947
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
1800
Intentional Release Bbls
0
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Ground Patrol By Operator Or Its Contractor
Operator Type
Operator Employee
Incident Identified Datetime
2020-05-27 15:15:00
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2020-05-27 15:15:00
Restart Datetime
2020-08-05 11:00:00
On Site Datetime
2020-05-27 15:10:00
Nrc Rpt Num
Nrc Notification Not Required
Ignite Ind
No
Explode Ind
No
Upstream Valve Type Ind
Remotely Controlled
Downstream Valve Type Ind
Remotely Controlled
Num Pub Evacuated
0
Pipe Fac Name
Grand Prix
Segment Name
Peregrine Lateral
Onshore State Abbreviation
Tx
Onshore Postal Code
79855
Onshore City Name
Van Horn
Onshore County Name
Culberson
Designated Location
Survey Station No.
Designated Name
65200
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
360
Crossing
No
Pipe Facility Type
Intrastate
Item Involved
Weld, Including Heat-Affected Zone
Pipe Diameter
12.75
Pipe Wall Thickness
0.33
Pipe Smys
60000
Pipe Specification
Api 5l Hfw Psl2
Pipe Seam Type
Erw - High Frequency
Pipe Manufacturer
Axis Pipe And Tube
Pipe Coating Type
Field Applied Epoxy
Weld Subtype
Pipe Girth Weld
Installation Year
2019
Manufactured Year
2019
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Other
Leak Type Other
3/8" Diameter Hole.
Wildlife Impact Ind
Yes
Birds Impact Ind
Yes
Soil Contamination
Yes
Long Term Assessment
Yes
Remediation Ind
Yes
Soil Remed Ind
Yes
Water Contam Ind
No
Could Be Hca
No
Commodity Reached Hca
No
Est Cost Oper Paid
0
Est Cost Gas Released
30000
Est Cost Prop Damage
1035000
Est Cost Emergency
0
Est Cost Environmental
0
Est Cost Other
0
Prpty
1065000
Accident Psig
764
Mop Psig
1440
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
89760
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
Yes
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
Pipeline in steady state operation at time of discovery. No changes to operation occurring at time of discovery.
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
Field Exam Basis Ind
Yes
Metallurgical Basis Ind
Yes
Underground Location
Yes
Under Cathodic Protection Ind
Yes
Cathodic Pro Start Year
2020
Shielding Evident
No
Cathodic Survey Type
Yes
Cp Annual Survey Ind
Yes
Cp Annual Survey Year
2020
Prior Damage
No
Collected Data Ind
Yes
Geometry Recent Year
2019
Has Hydrtst Conduc Before Ind
No
Direct Asmnt Conducted
No
Non Destructive Exam Ind
No
Preparer Name
T** H*****
Preparer Title
Manager Operational Discipline
Preparer Email
T******@t*************.com
Preparer Telephone
3375835200
Preparer Fax
3375834630
Prepared Date
2020-11-12 00:00:00
Authorizer Name
T** H*****
Authorizer Telephone
3375835200
Authorizer Title
Manager Operational Discipline
Authorizer Email
T******@t*************.com
Narrative
A targa pipeline technician discovered vapor releasing on targa's peregrine pipeline row. The peregrine lateral transports y grade ngl. An investigation determined the release was coming from targa's pipeline and the pipeline was shut-down and de-inventoried using a pipeline pig pushed with nitrogen. The segment of pipeline that failed is a bored segment installed by directional drill. The length of the drill is 926 feet with a maximum depth below grade of 70 feet. Removing the pipeline to determine the cause of the failure has been difficult and time consuming because of the depth and length of the drilled segment. A corroded area with pitting that created a hole in the pipe wall has been found at the location where pipe was 30 feet below grade. The hole has been measured at 3/8 inch in diameter. An investigation with corrosion specialists is on-going to determine the cause of the corrosion. The failed segment will also be sent to a metallurgical lab for analysis. Targa will run an in-line inspection of the peregrine lateral to assess the integrity of the pipeline once the failed segment is replaced. Eight quail were found that were killed by the release. A texas state wildlife official was notified. The section of pipe where the leak occurred was installed by a horizontal directional drill. That section was replaced by a horizontal directional drill. The pipeline lost coating when installed by the horizontal directional drill due to rocky soil conditions. External corrosion was caused by dc stray current interference from a combined operation of cathodic protection systems for the nearby pipelines most prevalent before cathodic protection for the pipeline was activated after construction. The following measures are being adopted to a prevent a similar accident in the future. 1. Enhanced design study to include investigating r.O.W. For interference issues to include anodic/cathodic interference along with the purpose of ac/dc cathodic protection design. 2. Enhance native study to provide native reading and to investigate any possible interference issues before cp is commissioned. 3. Install interim galvanic cp systems on segments installed by horizontal directional drill for temporary protection until permanent cp system is energized. The ili run after repair did not identify any actional anomalies.
| Report Received Date | 2020-06-26 00:00:00 |
|---|---|
| Iyear | 2020 |
| Report Number | 20200188 |
| Supplemental Number | 34527 |
| Report Type | Supplemental 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 |
| Local Datetime | 2020-05-27 14:00:00 |
| Location Latitude | 31.83148 Google Maps OpenStreetMap |
| Location Longitude | -104.18947 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 | 1800 |
| Intentional Release Bbls | 0 |
| Recovered Bbls | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Ground Patrol By Operator Or Its Contractor |
| Operator Type | Operator Employee |
| Incident Identified Datetime | 2020-05-27 15:15:00 |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2020-05-27 15:15:00 |
| Restart Datetime | 2020-08-05 11:00:00 |
| On Site Datetime | 2020-05-27 15:10:00 |
| Nrc Rpt Num | Nrc Notification Not Required NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Upstream Valve Type Ind | Remotely Controlled |
| Downstream Valve Type Ind | Remotely Controlled |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Grand Prix |
| Segment Name | Peregrine Lateral |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 79855 |
| Onshore City Name | Van Horn |
| Onshore County Name | Culberson |
| Designated Location | Survey Station No. |
| Designated Name | 65200 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 360 |
| Crossing | No |
| Pipe Facility Type | Intrastate |
| Item Involved | Weld, Including Heat-Affected Zone |
| Pipe Diameter | 12.75 |
| Pipe Wall Thickness | 0.33 |
| Pipe Smys | 60000 |
| Pipe Specification | Api 5l Hfw Psl2 |
| Pipe Seam Type | Erw - High Frequency |
| Pipe Manufacturer | Axis Pipe And Tube |
| Pipe Coating Type | Field Applied Epoxy |
| Weld Subtype | Pipe Girth Weld |
| Installation Year | 2019 |
| Manufactured Year | 2019 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Other |
| Leak Type Other | 3/8" Diameter Hole. |
| Wildlife Impact Ind | Yes |
| Birds Impact Ind | Yes |
| Soil Contamination | Yes |
| Long Term Assessment | Yes |
| Remediation Ind | Yes |
| Soil Remed Ind | Yes |
| Water Contam Ind | No |
| Could Be Hca | No |
| Commodity Reached Hca | No |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 30000 |
| Est Cost Prop Damage | 1035000 |
| Est Cost Emergency | 0 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 1065000 |
| Accident Psig | 764 |
| Mop Psig | 1440 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 89760 |
| 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 | Yes |
| 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 | Pipeline in steady state operation at time of discovery. No changes to operation occurring at time of discovery. |
| 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 |
| Field Exam Basis Ind | Yes |
| Metallurgical Basis Ind | Yes |
| Underground Location | Yes |
| Under Cathodic Protection Ind | Yes |
| Cathodic Pro Start Year | 2020 |
| Shielding Evident | No |
| Cathodic Survey Type | Yes |
| Cp Annual Survey Ind | Yes |
| Cp Annual Survey Year | 2020 |
| Prior Damage | No |
| Collected Data Ind | Yes |
| Geometry Recent Year | 2019 |
| Has Hydrtst Conduc Before Ind | No |
| Direct Asmnt Conducted | No |
| Non Destructive Exam Ind | No |
| Preparer Name | T** H***** |
| Preparer Title | Manager Operational Discipline |
| Preparer Email | T******@t*************.com |
| Preparer Telephone | 3375835200 |
| Preparer Fax | 3375834630 |
| Prepared Date | 2020-11-12 00:00:00 |
| Authorizer Name | T** H***** |
| Authorizer Telephone | 3375835200 |
| Authorizer Title | Manager Operational Discipline |
| Authorizer Email | T******@t*************.com |
| Narrative | A targa pipeline technician discovered vapor releasing on targa's peregrine pipeline row. The peregrine lateral transports y grade ngl. An investigation determined the release was coming from targa's pipeline and the pipeline was shut-down and de-inventoried using a pipeline pig pushed with nitrogen. The segment of pipeline that failed is a bored segment installed by directional drill. The length of the drill is 926 feet with a maximum depth below grade of 70 feet. Removing the pipeline to determine the cause of the failure has been difficult and time consuming because of the depth and length of the drilled segment. A corroded area with pitting that created a hole in the pipe wall has been found at the location where pipe was 30 feet below grade. The hole has been measured at 3/8 inch in diameter. An investigation with corrosion specialists is on-going to determine the cause of the corrosion. The failed segment will also be sent to a metallurgical lab for analysis. Targa will run an in-line inspection of the peregrine lateral to assess the integrity of the pipeline once the failed segment is replaced. Eight quail were found that were killed by the release. A texas state wildlife official was notified. The section of pipe where the leak occurred was installed by a horizontal directional drill. That section was replaced by a horizontal directional drill. The pipeline lost coating when installed by the horizontal directional drill due to rocky soil conditions. External corrosion was caused by dc stray current interference from a combined operation of cathodic protection systems for the nearby pipelines most prevalent before cathodic protection for the pipeline was activated after construction. The following measures are being adopted to a prevent a similar accident in the future. 1. Enhanced design study to include investigating r.O.W. For interference issues to include anodic/cathodic interference along with the purpose of ac/dc cathodic protection design. 2. Enhance native study to provide native reading and to investigate any possible interference issues before cp is commissioned. 3. Install interim galvanic cp systems on segments installed by horizontal directional drill for temporary protection until permanent cp system is energized. The ili run after repair did not identify any actional anomalies. |
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