Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2017-11-14 — TX
Operator
Enbridge Energy, Limited Partnership
Cause
Equipment Failure
Commodity
Crude Oil
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$12,571
Incident datetime
2017-11-14 07:35
Report number
Location
TX
Narrative
On november 14, 2017 at 7:35 am cst, approximately 74 gallons of crude oil was discovered near one of the mixers on tank 45 by two maintainers at the superior terminal while completing routine rounds. Superior pipeline maintenance personnel, along with a mechanic technician were dispatched to investigate the source of the crude oil and begin cleanup of the contaminated soil. It was discovered that the seal on the mixer was damaged, due to improper belt tension causing the release of crude oil. The mixer has been taken apart, the bearings have been sent to the manufacturer for a failure analysis, and will be repaired once all appropriate parts have been received and an outage scheduled. Four cubic yards of contaminated soil has been cleaned up and taken to an approved landfill. The results of the failure analysis revealed that the release was due to a compromised shaft bearing, leading to complete bearing failure and subsequent damage to sealing components of the mixer.
Detailed record list
Report Received Date
2017-12-13 00:00:00
Iyear
2017
Report Number
20170410
Supplemental Number
30473
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
2017-11-14 07:35:00
Location Latitude
46.695639
Location Longitude
-92.049378
Commodity Released Type
Crude Oil
Unintentional Release Bbls
1.76
Recovered Bbls
1.76
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
Incident Identified Datetime
2017-11-14 07:35:00
System Part Involved
Onshore Breakout Tank Or Storage Vessel, Including Attached Appurtenances
On Off Shore
Onshore
Shutdown Due Accident Ind
No
Shutdown Explain
Mixer Was Locked Out
On Site Datetime
2017-11-14 07:35:00
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 45 Mixer
Onshore State Abbreviation
Wi
Onshore Postal Code
54880
Onshore City Name
Superior
Onshore County Name
Douglas
Designated Location
Milepost/valve Station
Designated Name
1096
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
Tank Vessel Subtype
Mixer
Tank Type
Atmospheric
Installation Year
2015
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Seal Or Packing
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
Commercially Nav Ind
Yes
Commercially Nav Yes No
Yes
High Pop Ind
Yes
High Pop Yes No
Yes
Other Pop Ind
Yes
Other Pop Yes No
Yes
Usa Drinking Ind
Yes
Usa Drinking Yes No
Yes
Est Cost Oper Paid
0
Est Cost Gas Released
32
Est Cost Prop Damage
12571
Est Cost Emergency
113
Est Cost Environmental
5500
Est Cost Other
0
Prpty
18216
Accident Psig
0
Mop Psig
15
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
Field identified and lack of control center involvement
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Other Equipment Failure
Eq Failure Type
Other Equipment Failure
Failure Details
Mixer Seal
Eq Additional Other Ind
Yes
Eq Additional Other Details
Shaft Bearing Failure
Preparer Name
S**** S****
Preparer Title
Compliance Analyst
Preparer Email
S**********@e*******.com
Preparer Telephone
715-395-3620
Prepared Date
2018-06-07 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 november 14, 2017 at 7:35 am cst, approximately 74 gallons of crude oil was discovered near one of the mixers on tank 45 by two maintainers at the superior terminal while completing routine rounds. Superior pipeline maintenance personnel, along with a mechanic technician were dispatched to investigate the source of the crude oil and begin cleanup of the contaminated soil. It was discovered that the seal on the mixer was damaged, due to improper belt tension causing the release of crude oil. The mixer has been taken apart, the bearings have been sent to the manufacturer for a failure analysis, and will be repaired once all appropriate parts have been received and an outage scheduled. Four cubic yards of contaminated soil has been cleaned up and taken to an approved landfill. The results of the failure analysis revealed that the release was due to a compromised shaft bearing, leading to complete bearing failure and subsequent damage to sealing components of the mixer.
| Report Received Date | 2017-12-13 00:00:00 |
|---|---|
| Iyear | 2017 |
| Report Number | 20170410 |
| Supplemental Number | 30473 |
| 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 | 2017-11-14 07:35:00 |
| Location Latitude | 46.695639 Google Maps OpenStreetMap |
| Location Longitude | -92.049378 Google Maps OpenStreetMap |
| Commodity Released Type | Crude Oil |
| Unintentional Release Bbls | 1.76 |
| Recovered Bbls | 1.76 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| Incident Identified Datetime | 2017-11-14 07:35:00 |
| System Part Involved | Onshore Breakout Tank Or Storage Vessel, Including Attached Appurtenances |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | Mixer Was Locked Out |
| On Site Datetime | 2017-11-14 07:35:00 |
| 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 45 Mixer |
| Onshore State Abbreviation | Wi |
| Onshore Postal Code | 54880 |
| Onshore City Name | Superior |
| Onshore County Name | Douglas |
| Designated Location | Milepost/valve Station |
| Designated Name | 1096 |
| 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 |
| Tank Vessel Subtype | Mixer |
| Tank Type | Atmospheric |
| Installation Year | 2015 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Seal Or Packing |
| 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 |
| Commercially Nav Ind | Yes |
| Commercially Nav Yes No | Yes |
| High Pop Ind | Yes |
| High Pop Yes No | Yes |
| Other Pop Ind | Yes |
| Other Pop Yes No | Yes |
| Usa Drinking Ind | Yes |
| Usa Drinking Yes No | Yes |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 32 |
| Est Cost Prop Damage | 12571 |
| Est Cost Emergency | 113 |
| Est Cost Environmental | 5500 |
| Est Cost Other | 0 |
| Prpty | 18216 |
| Accident Psig | 0 |
| Mop Psig | 15 |
| 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 | Field identified and lack of control center involvement |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Other Equipment Failure |
| Eq Failure Type | Other Equipment Failure |
| Failure Details | Mixer Seal |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | Shaft Bearing Failure |
| Preparer Name | S**** S**** |
| Preparer Title | Compliance Analyst |
| Preparer Email | S**********@e*******.com |
| Preparer Telephone | 715-395-3620 |
| Prepared Date | 2018-06-07 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 november 14, 2017 at 7:35 am cst, approximately 74 gallons of crude oil was discovered near one of the mixers on tank 45 by two maintainers at the superior terminal while completing routine rounds. Superior pipeline maintenance personnel, along with a mechanic technician were dispatched to investigate the source of the crude oil and begin cleanup of the contaminated soil. It was discovered that the seal on the mixer was damaged, due to improper belt tension causing the release of crude oil. The mixer has been taken apart, the bearings have been sent to the manufacturer for a failure analysis, and will be repaired once all appropriate parts have been received and an outage scheduled. Four cubic yards of contaminated soil has been cleaned up and taken to an approved landfill. The results of the failure analysis revealed that the release was due to a compromised shaft bearing, leading to complete bearing failure and subsequent damage to sealing components of the mixer. |
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