Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2015-11-09 — TX
Operator
Enbridge Energy, Limited Partnership
Cause
Equipment Failure
Commodity
Crude Oil
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$337,771
Incident datetime
2015-11-09 08:00
Report number
Location
TX
Narrative
At approximately 8:00 am on november 9, 2015, a contractor discovered approximately 3 ounces of oil weeping from the line 2 valve at mp 1005.31 near cohasset, mn. The oil was wiped up and the control center was notified of the situation. Due to the valve not actively leaking, line 2 continued to operate and the valve was closely monitored. While the valve was being monitored, multiple discussions with enbridge sme's and the valve manufacturer took place to discuss repair options. Once the final repair plan was decided upon, notification was made to the nrc as the cost for the repair would exceed the notification threshold. In order to safely inspect and repair the valve, stopple equipment was utilized for isolation. During inspection of the valve, it was found that the o-ring required replacement due to exceeding its useful life. In addition to replacing the o-ring, new bonnet studs and nuts were installed. There was no contaminated soil associated with this incident.
Detailed record list
Report Received Date
2015-12-08 00:00:00
Iyear
2015
Report Number
20150448
Supplemental Number
20966
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
2015-11-09 08:00:00
Location Latitude
47.261205
Location Longitude
-93.591633
Commodity Released Type
Crude Oil
Unintentional Release Bbls
0.01
Recovered Bbls
0.01
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Contractor Working For The Operator
Incident Identified Datetime
2015-11-09 08:00:00
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Shutdown Due Accident Ind
No
Shutdown Explain
Was Not Actively Leaking Therefore No Shutdown Requested
On Site Datetime
2015-11-09 08:00:00
Nrc Rpt Datetime
2015-11-12 11:02:00
Nrc Rpt Num
1133254
Ignite Ind
No
Explode Ind
No
Upstream Valve Type Ind
Automatic
Downstream Valve Type Ind
Manual
Num Pub Evacuated
0
Pipe Fac Name
Line 2
Segment Name
Line 2 Mp1005.31
Onshore State Abbreviation
Mn
Onshore Postal Code
55721
Onshore City Name
Cohasset
Onshore County Name
Itasca
Designated Location
Milepost/valve Station
Designated Name
1005.31
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Exposed Due To Excavation
Depth Of Cover
14
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Valve
Valve Type
Mainline
Valve Mainline Type
Gate
Valve Manufacturer
Wkm
Installation Year
1973
Manufactured Year
1973
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Seal Or Packing
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
Other Pop Ind
Yes
Other Pop Yes No
Yes
Est Cost Oper Paid
0
Est Cost Gas Released
0
Est Cost Prop Damage
337771
Est Cost Emergency
2000
Est Cost Environmental
0
Est Cost Other
0
Prpty
339771
Accident Psig
287
Mop Psig
717
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
49050
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
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
Neither the operator nor the control center had involvement in this incident
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Non-Threaded Connection Failure
Eq Failure Type
Non-Threaded Connection Failure
Other Non Threaded Ind
O-Ring
Eq Additional Other Ind
Yes
Eq Additional Other Details
Exceeded Useful Life
Preparer Name
S**** S****
Preparer Title
Compliance Analyst
Preparer Email
S**********@e*******.com
Preparer Telephone
715-395-3620
Preparer Fax
715-394-1564
Prepared Date
2015-12-08 00:00:00
Authorizer Name
R** C*******
Authorizer Telephone
715-395-3619
Authorizer Title
Manager Us Pipelines Compliance
Authorizer Email
R***********@e*******.com
Narrative
At approximately 8:00 am on november 9, 2015, a contractor discovered approximately 3 ounces of oil weeping from the line 2 valve at mp 1005.31 near cohasset, mn. The oil was wiped up and the control center was notified of the situation. Due to the valve not actively leaking, line 2 continued to operate and the valve was closely monitored. While the valve was being monitored, multiple discussions with enbridge sme's and the valve manufacturer took place to discuss repair options. Once the final repair plan was decided upon, notification was made to the nrc as the cost for the repair would exceed the notification threshold. In order to safely inspect and repair the valve, stopple equipment was utilized for isolation. During inspection of the valve, it was found that the o-ring required replacement due to exceeding its useful life. In addition to replacing the o-ring, new bonnet studs and nuts were installed. There was no contaminated soil associated with this incident.
| Report Received Date | 2015-12-08 00:00:00 |
|---|---|
| Iyear | 2015 |
| Report Number | 20150448 |
| Supplemental Number | 20966 |
| 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 | 2015-11-09 08:00:00 |
| Location Latitude | 47.261205 Google Maps OpenStreetMap |
| Location Longitude | -93.591633 Google Maps OpenStreetMap |
| Commodity Released Type | Crude Oil |
| Unintentional Release Bbls | 0.01 |
| Recovered Bbls | 0.01 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Contractor Working For The Operator |
| Incident Identified Datetime | 2015-11-09 08:00:00 |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | Was Not Actively Leaking Therefore No Shutdown Requested |
| On Site Datetime | 2015-11-09 08:00:00 |
| Nrc Rpt Datetime | 2015-11-12 11:02:00 |
| Nrc Rpt Num | 1133254 NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Upstream Valve Type Ind | Automatic |
| Downstream Valve Type Ind | Manual |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Line 2 |
| Segment Name | Line 2 Mp1005.31 |
| Onshore State Abbreviation | Mn |
| Onshore Postal Code | 55721 |
| Onshore City Name | Cohasset |
| Onshore County Name | Itasca |
| Designated Location | Milepost/valve Station |
| Designated Name | 1005.31 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Exposed Due To Excavation |
| Depth Of Cover | 14 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Valve |
| Valve Type | Mainline |
| Valve Mainline Type | Gate |
| Valve Manufacturer | Wkm |
| Installation Year | 1973 |
| Manufactured Year | 1973 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Seal Or Packing |
| 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 |
| Other Pop Ind | Yes |
| Other Pop Yes No | Yes |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 0 |
| Est Cost Prop Damage | 337771 |
| Est Cost Emergency | 2000 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 339771 |
| Accident Psig | 287 |
| Mop Psig | 717 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 49050 |
| 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 | 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 | Neither the operator nor the control center had involvement in this incident |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Non-Threaded Connection Failure |
| Eq Failure Type | Non-Threaded Connection Failure |
| Other Non Threaded Ind | O-Ring |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | Exceeded Useful Life |
| Preparer Name | S**** S**** |
| Preparer Title | Compliance Analyst |
| Preparer Email | S**********@e*******.com |
| Preparer Telephone | 715-395-3620 |
| Preparer Fax | 715-394-1564 |
| Prepared Date | 2015-12-08 00:00:00 |
| Authorizer Name | R** C******* |
| Authorizer Telephone | 715-395-3619 |
| Authorizer Title | Manager Us Pipelines Compliance |
| Authorizer Email | R***********@e*******.com |
| Narrative | At approximately 8:00 am on november 9, 2015, a contractor discovered approximately 3 ounces of oil weeping from the line 2 valve at mp 1005.31 near cohasset, mn. The oil was wiped up and the control center was notified of the situation. Due to the valve not actively leaking, line 2 continued to operate and the valve was closely monitored. While the valve was being monitored, multiple discussions with enbridge sme's and the valve manufacturer took place to discuss repair options. Once the final repair plan was decided upon, notification was made to the nrc as the cost for the repair would exceed the notification threshold. In order to safely inspect and repair the valve, stopple equipment was utilized for isolation. During inspection of the valve, it was found that the o-ring required replacement due to exceeding its useful life. In addition to replacing the o-ring, new bonnet studs and nuts were installed. There was no contaminated soil associated with this incident. |
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