Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2024-09-24 — TX
Operator
Targa Downstream Llc
Cause
Equipment 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)
$200
Incident datetime
2024-09-24 00:00 UTC
Report number
Location
TX
Narrative
On the morning of 8/27/2024 pipeline operations were in the process of liquid filling the daytona 24" ngl pipeline for initial commissioning. At approximately 8:20 am, at mainline valve (mlv) 28, scada indicated an expected pressure increase to approximately 725 psig, then immediately dropped off. A nearby landowner heard the release and notified targa operations at approximately 8:30 am. Operations arrived on location at approximately 8:45 am and isolated the upstream valve, shutting off the source to the stainless-steel tubing leak. The 3/4" upstream valve that was isolated is located on the bypass line for the mainline valve and provides the source to the pressure transmitter. Upon investigation, it was determined that the stainless-steel connection located at the transmitter was not tightened enough to adequately secure the tubing to the ferrule. As a result, the tubing was forced out of the connection at the point pressure reached approximately 725 psig. New stainless-steel tubing and connections were installed, and transmitter was placed back into service the same day.
Detailed record list
Report Received Date
2024-09-24 00:00:00
Iyear
2024
Report Number
20240224
Supplemental Number
40026
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
32.347337
Location Longitude
-97.810593
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
37
Intentional Release Bbls
0
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Notification From Public
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Status When Identified
Post-Construction Commissioning
Communication State Fed Ind
No
Nrc Rpt Num
Nrc Notification Not Required
Ignite Ind
No
Upstream Action Taken
Valve Closure
Upstream Valve Type Ind
Manual
Downstream Action Taken
Operational Control
Downstream Oprtnl Cntrl Detail
See Narrative
Num Pub Evacuated
0
Pipe Fac Name
Daytona
Segment Name
Day-A
Onshore State Abbreviation
Tx
Onshore Postal Code
76048
Onshore City Name
Granbury
Onshore County Name
Hood
Designated Location
Survey Station No.
Designated Name
13047+87
Federal
No
Location Type
Totally Contained On Operator-Controlled Property
Incident Area Type
Aboveground
Incident Area Subtype
Typical Aboveground Facility Piping Or Appurtenance
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Tubing
Tubing Material
Stainless Steel
Tubing Type
Rigid
Installation Year
2024
Manufactured Year
2024
Material Involved
Material Other Than Carbon Steel
Material Details
Stainless Steel
Release Type
Leak
Leak Type
Connection Failure
Wildlife Impact Ind
No
Soil Contamination
No
Long Term Assessment
No
Remediation Ind
No
Water Contam Ind
No
Could Be Hca
Yes
Commodity Reached Hca
Yes
Usa Drinking Ind
Yes
Usa Drinking Yes No
Yes
Est Cost Oper Paid
0
Est Cost Gas Released
1500
Est Cost Prop Damage
200
Est Cost Emergency
0
Est Cost Environmental
0
Est Cost Other
0
Prpty
1700
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Accident Psig
725
Mop Psig
1440
Mop Cfr Section
Component Design Pressure �195.406(A)(2)
Maop Established Date
2024-07-01 00:00:00
Maop Reversal Flow Ind
No
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
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
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
See narrative
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Defective Or Loose Tubing Or Fitting
Eq Failure Type
Defective Or Loose Tubing Or Fitting
Additional Installation Ind
Yes
Preparer Name
B**** R******
Preparer Title
Pipeline Compliance Specialist
Preparer Email
B*******@t*************.com
Preparer Telephone
8179440617
Prepared Date
2024-09-23 00:00:00
Local Contact Name
B**** R******
Local Contact Email
B*******@t*************.com
Local Contact Telephone
8179440617
Authorizer Name
G**** J******
Authorizer Telephone
7135841632
Authorizer Title
Director Pipeline Compliance
Authorizer Email
G*******@t*************.com
Narrative
On the morning of 8/27/2024 pipeline operations were in the process of liquid filling the daytona 24" ngl pipeline for initial commissioning. At approximately 8:20 am, at mainline valve (mlv) 28, scada indicated an expected pressure increase to approximately 725 psig, then immediately dropped off. A nearby landowner heard the release and notified targa operations at approximately 8:30 am. Operations arrived on location at approximately 8:45 am and isolated the upstream valve, shutting off the source to the stainless-steel tubing leak. The 3/4" upstream valve that was isolated is located on the bypass line for the mainline valve and provides the source to the pressure transmitter. Upon investigation, it was determined that the stainless-steel connection located at the transmitter was not tightened enough to adequately secure the tubing to the ferrule. As a result, the tubing was forced out of the connection at the point pressure reached approximately 725 psig. New stainless-steel tubing and connections were installed, and transmitter was placed back into service the same day.
| Report Received Date | 2024-09-24 00:00:00 |
|---|---|
| Iyear | 2024 |
| Report Number | 20240224 |
| Supplemental Number | 40026 |
| 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 | 32.347337 Google Maps OpenStreetMap |
| Location Longitude | -97.810593 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 | 37 |
| Intentional Release Bbls | 0 |
| Recovered Bbls | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Notification From Public |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Status When Identified | Post-Construction Commissioning |
| Communication State Fed Ind | No |
| Nrc Rpt Num | Nrc Notification Not Required NRC Report How to search |
| Ignite Ind | No |
| Upstream Action Taken | Valve Closure |
| Upstream Valve Type Ind | Manual |
| Downstream Action Taken | Operational Control |
| Downstream Oprtnl Cntrl Detail | See Narrative |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Daytona |
| Segment Name | Day-A |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 76048 |
| Onshore City Name | Granbury |
| Onshore County Name | Hood |
| Designated Location | Survey Station No. |
| Designated Name | 13047+87 |
| Federal | No |
| Location Type | Totally Contained On Operator-Controlled Property |
| Incident Area Type | Aboveground |
| Incident Area Subtype | Typical Aboveground Facility Piping Or Appurtenance |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Tubing |
| Tubing Material | Stainless Steel |
| Tubing Type | Rigid |
| Installation Year | 2024 |
| Manufactured Year | 2024 |
| Material Involved | Material Other Than Carbon Steel |
| Material Details | Stainless Steel |
| Release Type | Leak |
| Leak Type | Connection Failure |
| Wildlife Impact Ind | No |
| Soil Contamination | No |
| Long Term Assessment | No |
| Remediation Ind | No |
| Water Contam Ind | No |
| Could Be Hca | Yes |
| Commodity Reached Hca | Yes |
| Usa Drinking Ind | Yes |
| Usa Drinking Yes No | Yes |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 1500 |
| Est Cost Prop Damage | 200 |
| Est Cost Emergency | 0 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 1700 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Accident Psig | 725 |
| Mop Psig | 1440 |
| Mop Cfr Section | Component Design Pressure �195.406(A)(2) View CFR 49 §192 |
| Maop Established Date | 2024-07-01 00:00:00 |
| Maop Reversal Flow Ind | No |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| 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 | 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 | See narrative |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Defective Or Loose Tubing Or Fitting |
| Eq Failure Type | Defective Or Loose Tubing Or Fitting |
| Additional Installation Ind | Yes |
| Preparer Name | B**** R****** |
| Preparer Title | Pipeline Compliance Specialist |
| Preparer Email | B*******@t*************.com |
| Preparer Telephone | 8179440617 |
| Prepared Date | 2024-09-23 00:00:00 |
| Local Contact Name | B**** R****** |
| Local Contact Email | B*******@t*************.com |
| Local Contact Telephone | 8179440617 |
| Authorizer Name | G**** J****** |
| Authorizer Telephone | 7135841632 |
| Authorizer Title | Director Pipeline Compliance |
| Authorizer Email | G*******@t*************.com |
| Narrative | On the morning of 8/27/2024 pipeline operations were in the process of liquid filling the daytona 24" ngl pipeline for initial commissioning. At approximately 8:20 am, at mainline valve (mlv) 28, scada indicated an expected pressure increase to approximately 725 psig, then immediately dropped off. A nearby landowner heard the release and notified targa operations at approximately 8:30 am. Operations arrived on location at approximately 8:45 am and isolated the upstream valve, shutting off the source to the stainless-steel tubing leak. The 3/4" upstream valve that was isolated is located on the bypass line for the mainline valve and provides the source to the pressure transmitter. Upon investigation, it was determined that the stainless-steel connection located at the transmitter was not tightened enough to adequately secure the tubing to the ferrule. As a result, the tubing was forced out of the connection at the point pressure reached approximately 725 psig. New stainless-steel tubing and connections were installed, and transmitter was placed back into service the same day. |
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