Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2023-12-06 — TX
Operator
Enbridge Holdings (Gray Oak) Llc
Cause
Equipment Failure
Commodity
Crude Oil
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$900
Incident datetime
2023-12-06 00:00 UTC
Report number
Location
TX
Narrative
On november 7, 2023, at approximately 10:35 am cst, operations personnel noticed the smell of crude oil at the gray oak ingleside station and discovered oil dripping from the threaded fitting of the sample probe on the east meter skid. The control center was contacted, and the line segment was shut down. Approximately 5 gallons of crude oil was released. The railroad commission of texas was notified at 11:00 am cst (report # 2973). The line segment was drained, and the sample probe was replaced. All contaminated soil was removed from the release site and properly disposed of. The investigation determined the cause of the release was due to a defective threaded flange. The flange was not fully threaded by the manufacturer and the defect was not found prior to installation on november 1, 2023.
Detailed record list
Report Received Date
2023-12-06 00:00:00
Iyear
2023
Report Number
20230290
Supplemental Number
38918
Report Type
Original Final
Operator Id
40668
Name
Enbridge Holdings (Gray Oak) Llc
Operator Street Address
915 N Eldridge Pkwy, Suite 1100
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77079
Time Zone
Central
Daylight Savings Ind
No
Location Latitude
27.83019
Location Longitude
-97.200641
Commodity Released Type
Crude Oil
Unintentional Release Bbls
0.12
Recovered Bbls
0.12
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
System Part Involved
Onshore Pump/meter Station Equipment And Piping
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
Nrc Notification Not Required
Ignite Ind
No
Notify Qualified Indiv Ind
Yes
Oil Spill Removal Org Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Gray Oak
Segment Name
Ingleside Take-Off
Onshore State Abbreviation
Tx
Onshore Postal Code
78362
Onshore City Name
Ingleside
Onshore County Name
San Patricio
Designated Location
Milepost
Designated Name
93.26
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
Intrastate
Item Involved
Meter/prover
Installation Year
2023
Manufactured Year
Unknown
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Connection Failure
Wildlife Impact Ind
No
Soil Contamination
Yes
Long Term Assessment
No
Remediation Ind
No
Water Contam Ind
No
Could Be Hca
Yes
Commodity Reached Hca
Yes
Other Pop Ind
Yes
Other Pop Yes No
Yes
Usa Ecological Ind
Yes
Usa Ecological Yes No
Yes
Est Cost Oper Paid
0
Est Cost Gas Released
9
Est Cost Prop Damage
900
Est Cost Emergency
17500
Est Cost Environmental
11600
Est Cost Other
0
Prpty
30009
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Accident Psig
96
Mop Psig
285
Mop Cfr Section
Internal Design Pressure �195.406(A)(1)
Maop Established Date
2020-04-01 00:00:00
Maop Reversal Flow Ind
No
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction 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
Lack of control center involvement. There were no alarms to indicate an issue and was identified by field personnel.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Threaded Connection/coupling Failure
Eq Failure Type
Threaded Connection/coupling Failure
Other Stripped Ind
Threaded Fitting
Additional Defect Ind
Yes
Preparer Name
S**** S****
Preparer Title
Advisor Regulatory Compliance
Preparer Email
S**********@e*******.com
Preparer Telephone
7153953620
Prepared Date
2023-12-06 00:00:00
Authorizer Name
L*** S**********
Authorizer Telephone
7153941584
Authorizer Title
Supervisor Regulatory Compliance
Authorizer Email
L***************@e*******.com
Narrative
On november 7, 2023, at approximately 10:35 am cst, operations personnel noticed the smell of crude oil at the gray oak ingleside station and discovered oil dripping from the threaded fitting of the sample probe on the east meter skid. The control center was contacted, and the line segment was shut down. Approximately 5 gallons of crude oil was released. The railroad commission of texas was notified at 11:00 am cst (report # 2973). The line segment was drained, and the sample probe was replaced. All contaminated soil was removed from the release site and properly disposed of. The investigation determined the cause of the release was due to a defective threaded flange. The flange was not fully threaded by the manufacturer and the defect was not found prior to installation on november 1, 2023.
| Report Received Date | 2023-12-06 00:00:00 |
|---|---|
| Iyear | 2023 |
| Report Number | 20230290 |
| Supplemental Number | 38918 |
| Report Type | Original Final |
| Operator Id | 40668 PHMSA Enforcement |
| Name | Enbridge Holdings (Gray Oak) Llc |
| Operator Street Address | 915 N Eldridge Pkwy, Suite 1100 |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77079 |
| Time Zone | Central |
| Daylight Savings Ind | No |
| Location Latitude | 27.83019 Google Maps OpenStreetMap |
| Location Longitude | -97.200641 Google Maps OpenStreetMap |
| Commodity Released Type | Crude Oil |
| Unintentional Release Bbls | 0.12 |
| Recovered Bbls | 0.12 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| System Part Involved | Onshore Pump/meter Station Equipment And Piping |
| 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 | Nrc Notification Not Required NRC Report How to search |
| Ignite Ind | No |
| Notify Qualified Indiv Ind | Yes |
| Oil Spill Removal Org Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Gray Oak |
| Segment Name | Ingleside Take-Off |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 78362 |
| Onshore City Name | Ingleside |
| Onshore County Name | San Patricio |
| Designated Location | Milepost |
| Designated Name | 93.26 |
| 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 | Intrastate |
| Item Involved | Meter/prover |
| Installation Year | 2023 |
| Manufactured Year | Unknown |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Connection Failure |
| Wildlife Impact Ind | No |
| Soil Contamination | Yes |
| Long Term Assessment | No |
| Remediation Ind | No |
| Water Contam Ind | No |
| Could Be Hca | Yes |
| Commodity Reached Hca | Yes |
| Other Pop Ind | Yes |
| Other Pop Yes No | Yes |
| Usa Ecological Ind | Yes |
| Usa Ecological Yes No | Yes |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 9 |
| Est Cost Prop Damage | 900 |
| Est Cost Emergency | 17500 |
| Est Cost Environmental | 11600 |
| Est Cost Other | 0 |
| Prpty | 30009 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Accident Psig | 96 |
| Mop Psig | 285 |
| Mop Cfr Section | Internal Design Pressure �195.406(A)(1) View CFR 49 §192 |
| Maop Established Date | 2020-04-01 00:00:00 |
| Maop Reversal Flow Ind | No |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction 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 | Lack of control center involvement. There were no alarms to indicate an issue and was identified by field personnel. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Threaded Connection/coupling Failure |
| Eq Failure Type | Threaded Connection/coupling Failure |
| Other Stripped Ind | Threaded Fitting |
| Additional Defect Ind | Yes |
| Preparer Name | S**** S**** |
| Preparer Title | Advisor Regulatory Compliance |
| Preparer Email | S**********@e*******.com |
| Preparer Telephone | 7153953620 |
| Prepared Date | 2023-12-06 00:00:00 |
| Authorizer Name | L*** S********** |
| Authorizer Telephone | 7153941584 |
| Authorizer Title | Supervisor Regulatory Compliance |
| Authorizer Email | L***************@e*******.com |
| Narrative | On november 7, 2023, at approximately 10:35 am cst, operations personnel noticed the smell of crude oil at the gray oak ingleside station and discovered oil dripping from the threaded fitting of the sample probe on the east meter skid. The control center was contacted, and the line segment was shut down. Approximately 5 gallons of crude oil was released. The railroad commission of texas was notified at 11:00 am cst (report # 2973). The line segment was drained, and the sample probe was replaced. All contaminated soil was removed from the release site and properly disposed of. The investigation determined the cause of the release was due to a defective threaded flange. The flange was not fully threaded by the manufacturer and the defect was not found prior to installation on november 1, 2023. |
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