Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2018-08-04 — TX
Operator
Enbridge Energy, Limited Partnership
Cause
Equipment Failure
Commodity
Crude Oil
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$4,383
Incident datetime
2018-08-04 09:00
Report number
Location
TX
Narrative
On august 4, 2018 at 9:00 am, superior terminal personnel discovered a leak on valve 272 attached to tank 17. Approximately 7.5 gallons of crude oil had been released from the valve, the leak originated from the 1/2" body bleed connection to the valve body. This 8" valve which is attached to the tank is blinded off. A small amount of product was sprayed onto the surrounding soil. Less than a cubic yard of contaminated soil was removed and taken to the soil management site for proper disposal. On august 10, 2018, during a scheduled outage, tank 17 was pumped down to working bottoms to accommodate the investigation and repair of the valve. It was discovered that the release was due to thermal pressure buildup. The valve was secured in the partially open position to prevent further thermal pressure buildup in the future. 09/24/2024 - updated by PHMSA per operator approval.
Detailed record list
Report Received Date
2018-08-30 00:00:00
Iyear
2018
Report Number
20180259
Supplemental Number
30876
Report Type
Original Final
Operator Id
11169
Name
Enbridge Energy, Limited Partnership
Operator Street Address
915 N Eldridge Parkway, Suite 1100
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77079
Local Datetime
2018-08-04 09:00:00
Location Latitude
46.686998
Location Longitude
-92.062559
Commodity Released Type
Crude Oil
Unintentional Release Bbls
0.18
Recovered Bbls
0.18
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
Incident Identified Datetime
2018-08-04 09:00:00
System Part Involved
Onshore Breakout Tank Or Storage Vessel, Including Attached Appurtenances
On Off Shore
Onshore
Shutdown Due Accident Ind
No
Shutdown Explain
Valve Was Monitored Until Repairs Could Be Made
On Site Datetime
2018-08-04 09:00:00
Nrc Rpt Num
Nrc Notification Not Required
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Superior Terminal
Segment Name
Tank 17 Valve 272
Onshore State Abbreviation
Wi
Onshore Postal Code
54880
Onshore City Name
Superior
Onshore County Name
Douglas
Designated Location
Milepost/valve Station
Designated Name
1098
Federal
No
Location Type
Totally Contained On Operator-Controlled Property
Incident Area Type
Tank, Including Attached Appurtenances
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Tank/vessel
Valve Type
Auxiliary Or Other Valve
Tank Vessel Subtype
Other
Tank Vessel Details
Water Draw Valve
Tank Type
Atmospheric
Installation Year
1952
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
Est Cost Oper Paid
0
Est Cost Gas Released
13
Est Cost Prop Damage
4383
Est Cost Emergency
339
Est Cost Environmental
0
Est Cost Other
0
Prpty
4735
Accident Psig
3
Mop Psig
275
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
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. Field identified release.
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
Valve Threads
Additional Thermal Ind
Yes
Preparer Name
S**** S****
Preparer Title
Sr Compliance Analyst
Preparer Email
S**********@e*******.com
Preparer Telephone
715-395-3620
Prepared Date
2018-08-30 00:00:00
Authorizer Name
R** C*******
Authorizer Telephone
715-395-3619
Authorizer Title
Supervisor Us Pipeline Compliance
Authorizer Email
R***********@e*******.com
Narrative
On august 4, 2018 at 9:00 am, superior terminal personnel discovered a leak on valve 272 attached to tank 17. Approximately 7.5 gallons of crude oil had been released from the valve, the leak originated from the 1/2" body bleed connection to the valve body. This 8" valve which is attached to the tank is blinded off. A small amount of product was sprayed onto the surrounding soil. Less than a cubic yard of contaminated soil was removed and taken to the soil management site for proper disposal. On august 10, 2018, during a scheduled outage, tank 17 was pumped down to working bottoms to accommodate the investigation and repair of the valve. It was discovered that the release was due to thermal pressure buildup. The valve was secured in the partially open position to prevent further thermal pressure buildup in the future. 09/24/2024 - updated by PHMSA per operator approval.
| Report Received Date | 2018-08-30 00:00:00 |
|---|---|
| Iyear | 2018 |
| Report Number | 20180259 |
| Supplemental Number | 30876 |
| Report Type | Original Final |
| Operator Id | 11169 PHMSA Enforcement |
| Name | Enbridge Energy, Limited Partnership |
| Operator Street Address | 915 N Eldridge Parkway, Suite 1100 |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77079 |
| Local Datetime | 2018-08-04 09:00:00 |
| Location Latitude | 46.686998 Google Maps OpenStreetMap |
| Location Longitude | -92.062559 Google Maps OpenStreetMap |
| Commodity Released Type | Crude Oil |
| Unintentional Release Bbls | 0.18 |
| Recovered Bbls | 0.18 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| Incident Identified Datetime | 2018-08-04 09:00:00 |
| System Part Involved | Onshore Breakout Tank Or Storage Vessel, Including Attached Appurtenances |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | Valve Was Monitored Until Repairs Could Be Made |
| On Site Datetime | 2018-08-04 09:00:00 |
| Nrc Rpt Num | Nrc Notification Not Required NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Superior Terminal |
| Segment Name | Tank 17 Valve 272 |
| Onshore State Abbreviation | Wi |
| Onshore Postal Code | 54880 |
| Onshore City Name | Superior |
| Onshore County Name | Douglas |
| Designated Location | Milepost/valve Station |
| Designated Name | 1098 |
| Federal | No |
| Location Type | Totally Contained On Operator-Controlled Property |
| Incident Area Type | Tank, Including Attached Appurtenances |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Tank/vessel |
| Valve Type | Auxiliary Or Other Valve |
| Tank Vessel Subtype | Other |
| Tank Vessel Details | Water Draw Valve |
| Tank Type | Atmospheric |
| Installation Year | 1952 |
| 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 |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 13 |
| Est Cost Prop Damage | 4383 |
| Est Cost Emergency | 339 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 4735 |
| Accident Psig | 3 |
| Mop Psig | 275 |
| 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 | 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. Field identified release. |
| 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 | Valve Threads |
| Additional Thermal Ind | Yes |
| Preparer Name | S**** S**** |
| Preparer Title | Sr Compliance Analyst |
| Preparer Email | S**********@e*******.com |
| Preparer Telephone | 715-395-3620 |
| Prepared Date | 2018-08-30 00:00:00 |
| Authorizer Name | R** C******* |
| Authorizer Telephone | 715-395-3619 |
| Authorizer Title | Supervisor Us Pipeline Compliance |
| Authorizer Email | R***********@e*******.com |
| Narrative | On august 4, 2018 at 9:00 am, superior terminal personnel discovered a leak on valve 272 attached to tank 17. Approximately 7.5 gallons of crude oil had been released from the valve, the leak originated from the 1/2" body bleed connection to the valve body. This 8" valve which is attached to the tank is blinded off. A small amount of product was sprayed onto the surrounding soil. Less than a cubic yard of contaminated soil was removed and taken to the soil management site for proper disposal. On august 10, 2018, during a scheduled outage, tank 17 was pumped down to working bottoms to accommodate the investigation and repair of the valve. It was discovered that the release was due to thermal pressure buildup. The valve was secured in the partially open position to prevent further thermal pressure buildup in the future. 09/24/2024 - updated by PHMSA per operator approval. |
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