Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2019-07-04 — TX
Operator
Enbridge Energy, Limited Partnership
Cause
Equipment Failure
Commodity
Crude Oil
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$100,790
Incident datetime
2019-07-04 22:30
Report number
Location
TX
Narrative
On july 4, 2019 at 9:50 pm cdt, the on call technician was dispatched by the edmonton control center to the floodwood line 4 station due to a gas alarm. While the technician was en route to the station, the control center received another gas alarm, initiating the line 4 shut down at 10:03 pm cdt. Upon arriving at the station at 10:30 pm cdt, the technician confirmed oil on the pump room floor and the interior walls of the building. Additional personnel were dispatched to assist with clean up. It was discovered that the source of the crude oil was a pinhole leak on the 1/2" tubing on the line 4 unit 2 pump. The nrc was notified on july 5, 2019 at 2:13 pm cdt (#1251072) after the unit 2 motor was found to have oil inside the housing unit and the costs were estimated to exceed the nrc reporting threshold to clean and repair the motor. A 48-hour update was made to the nrc on july 7, 2019 at 8:23 am cdt (#1251215). The pump is currently locked out until the motor is cleaned and the piping replaced. Approximately three cubic yards of contaminated soil has been properly disposed of. A third-party metallurgical analysis determined that the failure was due to mechanical damage to the 1/2" tubing, at an unknown previous time, causing a protrusion into the tube. Eventually the tubing failed at the protrusion. The motor was sent in for an overall cleaning and the pump is in the process of being rebuilt. The unit will be placed back into service once all parts have been prepared for assembly.
Detailed record list
Report Received Date
2019-08-02 00:00:00
Iyear
2019
Report Number
20190242
Supplemental Number
33242
Report Type
Supplemental 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
2019-07-04 21:50:00
Location Latitude
46.93887
Location Longitude
-92.938287
Commodity Released Type
Crude Oil
Unintentional Release Bbls
6.7
Recovered Bbls
6.7
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Cpm Leak Detection System Or Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Calculations)
Incident Identified Datetime
2019-07-04 22:30:00
System Part Involved
Onshore Pump/meter Station Equipment And Piping
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2019-07-04 22:03:00
Restart Datetime
2019-07-05 04:17:00
On Site Datetime
2019-07-04 22:30:00
Nrc Rpt Datetime
2019-07-05 14:13:00
Nrc Rpt Num
1251072
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Floodwood Station
Segment Name
Line 4 Unit 2
Onshore State Abbreviation
Mn
Onshore Postal Code
55736
Onshore City Name
Floodwood
Onshore County Name
St. Louis
Designated Location
Milepost/valve Station
Designated Name
1044
Federal
No
Location Type
Totally Contained On Operator-Controlled Property
Incident Area Type
Aboveground
Incident Area Subtype
Inside A Building
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Auxiliary Piping (E.g. Drain Lines)
Installation Year
1970
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Pinhole
Wildlife Impact Ind
No
Soil Contamination
Yes
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
382
Est Cost Prop Damage
100790
Est Cost Emergency
124
Est Cost Environmental
2500
Est Cost Other
0
Prpty
103796
Accident Psig
727
Mop Psig
879
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
Yes
Scada Conf Ind
Yes
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
Actions from the operator would not have had an impact on the event
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
Eq Additional Other Ind
Yes
Eq Additional Other Details
Mechanical Damage
Preparer Name
S**** S****
Preparer Title
Sr Compliance Analyst
Preparer Email
S**********@e*******.com
Preparer Telephone
715-395-3620
Prepared Date
2020-01-28 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 july 4, 2019 at 9:50 pm cdt, the on call technician was dispatched by the edmonton control center to the floodwood line 4 station due to a gas alarm. While the technician was en route to the station, the control center received another gas alarm, initiating the line 4 shut down at 10:03 pm cdt. Upon arriving at the station at 10:30 pm cdt, the technician confirmed oil on the pump room floor and the interior walls of the building. Additional personnel were dispatched to assist with clean up. It was discovered that the source of the crude oil was a pinhole leak on the 1/2" tubing on the line 4 unit 2 pump. The nrc was notified on july 5, 2019 at 2:13 pm cdt (#1251072) after the unit 2 motor was found to have oil inside the housing unit and the costs were estimated to exceed the nrc reporting threshold to clean and repair the motor. A 48-hour update was made to the nrc on july 7, 2019 at 8:23 am cdt (#1251215). The pump is currently locked out until the motor is cleaned and the piping replaced. Approximately three cubic yards of contaminated soil has been properly disposed of. A third-party metallurgical analysis determined that the failure was due to mechanical damage to the 1/2" tubing, at an unknown previous time, causing a protrusion into the tube. Eventually the tubing failed at the protrusion. The motor was sent in for an overall cleaning and the pump is in the process of being rebuilt. The unit will be placed back into service once all parts have been prepared for assembly.
| Report Received Date | 2019-08-02 00:00:00 |
|---|---|
| Iyear | 2019 |
| Report Number | 20190242 |
| Supplemental Number | 33242 |
| Report Type | Supplemental 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 | 2019-07-04 21:50:00 |
| Location Latitude | 46.93887 Google Maps OpenStreetMap |
| Location Longitude | -92.938287 Google Maps OpenStreetMap |
| Commodity Released Type | Crude Oil |
| Unintentional Release Bbls | 6.7 |
| Recovered Bbls | 6.7 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Cpm Leak Detection System Or Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Calculations) |
| Incident Identified Datetime | 2019-07-04 22:30:00 |
| System Part Involved | Onshore Pump/meter Station Equipment And Piping |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2019-07-04 22:03:00 |
| Restart Datetime | 2019-07-05 04:17:00 |
| On Site Datetime | 2019-07-04 22:30:00 |
| Nrc Rpt Datetime | 2019-07-05 14:13:00 |
| Nrc Rpt Num | 1251072 NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Floodwood Station |
| Segment Name | Line 4 Unit 2 |
| Onshore State Abbreviation | Mn |
| Onshore Postal Code | 55736 |
| Onshore City Name | Floodwood |
| Onshore County Name | St. Louis |
| Designated Location | Milepost/valve Station |
| Designated Name | 1044 |
| Federal | No |
| Location Type | Totally Contained On Operator-Controlled Property |
| Incident Area Type | Aboveground |
| Incident Area Subtype | Inside A Building |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Auxiliary Piping (E.g. Drain Lines) |
| Installation Year | 1970 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Pinhole |
| Wildlife Impact Ind | No |
| Soil Contamination | Yes |
| 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 | 382 |
| Est Cost Prop Damage | 100790 |
| Est Cost Emergency | 124 |
| Est Cost Environmental | 2500 |
| Est Cost Other | 0 |
| Prpty | 103796 |
| Accident Psig | 727 |
| Mop Psig | 879 |
| 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 | Yes |
| Scada Conf Ind | Yes |
| 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 | Actions from the operator would not have had an impact on the event |
| 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 |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | Mechanical Damage |
| Preparer Name | S**** S**** |
| Preparer Title | Sr Compliance Analyst |
| Preparer Email | S**********@e*******.com |
| Preparer Telephone | 715-395-3620 |
| Prepared Date | 2020-01-28 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 july 4, 2019 at 9:50 pm cdt, the on call technician was dispatched by the edmonton control center to the floodwood line 4 station due to a gas alarm. While the technician was en route to the station, the control center received another gas alarm, initiating the line 4 shut down at 10:03 pm cdt. Upon arriving at the station at 10:30 pm cdt, the technician confirmed oil on the pump room floor and the interior walls of the building. Additional personnel were dispatched to assist with clean up. It was discovered that the source of the crude oil was a pinhole leak on the 1/2" tubing on the line 4 unit 2 pump. The nrc was notified on july 5, 2019 at 2:13 pm cdt (#1251072) after the unit 2 motor was found to have oil inside the housing unit and the costs were estimated to exceed the nrc reporting threshold to clean and repair the motor. A 48-hour update was made to the nrc on july 7, 2019 at 8:23 am cdt (#1251215). The pump is currently locked out until the motor is cleaned and the piping replaced. Approximately three cubic yards of contaminated soil has been properly disposed of. A third-party metallurgical analysis determined that the failure was due to mechanical damage to the 1/2" tubing, at an unknown previous time, causing a protrusion into the tube. Eventually the tubing failed at the protrusion. The motor was sent in for an overall cleaning and the pump is in the process of being rebuilt. The unit will be placed back into service once all parts have been prepared for assembly. |
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