Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2010-06-08 — TX
Operator
Enbridge Energy, Limited Partnership
Cause
Material Failure Of Pipe Or Weld
Commodity
Crude Oil
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$8,000
Incident datetime
2010-06-08 15:45
Report number
Location
TX
Narrative
While performing a planned integrity assessment dig, traces of oil and stained soil/rock were noticed around the pipeline and the pipeline was shutdown as a precaution. After further investigation it was discovered that the pipeline was resting on a small rock. A small crack formed in the dent area and a small amount of crude had weeped through the crack-like defect (less than 5 gallons). The enbridge pipeline maintenance crew repaired the damaged pipe using a full encirclement pressure containing sleeve. On 6/12/10, during site restoration contract crews discovered some additional crude oil near the original area of the leak (approximately 1 barrel). As such, enbridge contacted the nrc (PHMSA and wdnr), as the volume released reached notification/reporting quantity. Contaminated soil has been removed and disposed at an approved landfill location and enbridge environmental department is planning a soil and groundwater investigation program to determine if additional impacts exist. Based on the environmental investigation groundwater impacts appear to be localized. Groundwater monitoring program has been developed and agreed upon with state environmental regulators. Update approximately 400 cubic yards of contaminated soil was removed from release site and disposed at an approved landfill. Enbridge environmental department is completing quarterly groundwater monitoring with possible site regulatory closure in late 2014.
Detailed record list
Report Received Date
2010-07-07 00:00:00
Iyear
2010
Report Number
20100140
Supplemental Number
18625
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
2010-06-08 15:45:00
Location Latitude
44.67167
Location Longitude
-90.24833
Commodity Released Type
Crude Oil
Unintentional Release Bbls
1
Intentional Release Bbls
0
Recovered Bbls
1
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
2010-06-08 15:45:00
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2010-06-08 16:00:00
Restart Datetime
2010-06-09 20:05:00
On Site Datetime
2010-06-08 15:45:00
Nrc Rpt Datetime
2010-06-12 18:30:00
Nrc Rpt Num
943825
Ignite Ind
No
Explode Ind
No
Upstream Valve Type Ind
Remotely Controlled
Downstream Valve Type Ind
Remotely Controlled
Num Pub Evacuated
0
Pipe Fac Name
Line 6a
Onshore State Abbreviation
Wi
Onshore Postal Code
54449
Onshore City Name
Marshfield
Onshore County Name
Wood
Designated Location
Milepost/valve Station
Designated Name
168.3
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
50
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Pipe
Pipe Type
Pipe Body
Pipe Diameter
34
Pipe Wall Thickness
0.281
Pipe Smys
52000
Pipe Specification
Api 5l
Pipe Seam Type
Flash Welded
Pipe Manufacturer
Ao Smith
Pipe Coating Type
Cold Applied Tape
Installation Year
1968
Manufactured Year
1968
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Crack
Wildlife Impact Ind
No
Soil Contamination
Yes
Long Term Assessment
Yes
Remediation Ind
Yes
Groundwater Remed Ind
Yes
Water Contam Ind
Yes
Groundwater Contam Ind
Yes
Amount Released
1
Rel Water Name
N/a - Shallow Groundwater
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
8000
Est Cost Emergency
9000
Est Cost Environmental
313000
Est Cost Other
0
Est Cost Other Details
Environmental Monitoring And Reporting
Prpty
330000
Accident Psig
315
Mop Psig
612
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
129360
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
A dent with a fatigue crack was found as part of an assigned integrity dig. Control room did not play a role in this leak.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Material Failure Of Pipe Or Weld
Cause Details
Design-, Construction-, Installation-, Or Fabrication-Related
Field Exam Ind
Yes
Failure Type
Design-, Construction-, Installation-, Or Fabrication-Related
Fatigue Vibr Related
Yes
Failure Subtype
Other
Fatigue Vibr Related Other
Pipeline Resting On A Rock Generated A Fatigue Crack Within A Dent.
Additional Dent Ind
Yes
Additional Crack Ind
Yes
Collected Data Ind
Yes
Ultrasonic Ind
Yes
Geometry Deformation Ind
Yes
Emat Ind
Yes
Ultrasonic Recent Year
2009
Geometry Recent Year
2009
Emat Recent Year
2009
Has Hydrtst Conduc Before Ind
No
Direct Asmnt Conducted
No
Non Destructive Exam Ind
No
Preparer Name
S**** S****
Preparer Title
Compliance Analyst
Preparer Email
S**********@e*******.com
Preparer Telephone
218-464-5754
Preparer Fax
218-464-5992
Prepared Date
2013-09-27 00:00:00
Authorizer Name
D**** S*******
Authorizer Telephone
218-464-5751
Authorizer Title
Manager Pipeline Compliance
Authorizer Email
D*************@e*******.com
Narrative
While performing a planned integrity assessment dig, traces of oil and stained soil/rock were noticed around the pipeline and the pipeline was shutdown as a precaution. After further investigation it was discovered that the pipeline was resting on a small rock. A small crack formed in the dent area and a small amount of crude had weeped through the crack-like defect (less than 5 gallons). The enbridge pipeline maintenance crew repaired the damaged pipe using a full encirclement pressure containing sleeve. On 6/12/10, during site restoration contract crews discovered some additional crude oil near the original area of the leak (approximately 1 barrel). As such, enbridge contacted the nrc (PHMSA and wdnr), as the volume released reached notification/reporting quantity. Contaminated soil has been removed and disposed at an approved landfill location and enbridge environmental department is planning a soil and groundwater investigation program to determine if additional impacts exist. Based on the environmental investigation groundwater impacts appear to be localized. Groundwater monitoring program has been developed and agreed upon with state environmental regulators. Update approximately 400 cubic yards of contaminated soil was removed from release site and disposed at an approved landfill. Enbridge environmental department is completing quarterly groundwater monitoring with possible site regulatory closure in late 2014.
| Report Received Date | 2010-07-07 00:00:00 |
|---|---|
| Iyear | 2010 |
| Report Number | 20100140 |
| Supplemental Number | 18625 |
| 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 | 2010-06-08 15:45:00 |
| Location Latitude | 44.67167 Google Maps OpenStreetMap |
| Location Longitude | -90.24833 Google Maps OpenStreetMap |
| Commodity Released Type | Crude Oil |
| Unintentional Release Bbls | 1 |
| Intentional Release Bbls | 0 |
| Recovered Bbls | 1 |
| 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 | 2010-06-08 15:45:00 |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2010-06-08 16:00:00 |
| Restart Datetime | 2010-06-09 20:05:00 |
| On Site Datetime | 2010-06-08 15:45:00 |
| Nrc Rpt Datetime | 2010-06-12 18:30:00 |
| Nrc Rpt Num | 943825 NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Upstream Valve Type Ind | Remotely Controlled |
| Downstream Valve Type Ind | Remotely Controlled |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Line 6a |
| Onshore State Abbreviation | Wi |
| Onshore Postal Code | 54449 |
| Onshore City Name | Marshfield |
| Onshore County Name | Wood |
| Designated Location | Milepost/valve Station |
| Designated Name | 168.3 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 50 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Pipe Diameter | 34 |
| Pipe Wall Thickness | 0.281 |
| Pipe Smys | 52000 |
| Pipe Specification | Api 5l |
| Pipe Seam Type | Flash Welded |
| Pipe Manufacturer | Ao Smith |
| Pipe Coating Type | Cold Applied Tape |
| Installation Year | 1968 |
| Manufactured Year | 1968 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Crack |
| Wildlife Impact Ind | No |
| Soil Contamination | Yes |
| Long Term Assessment | Yes |
| Remediation Ind | Yes |
| Groundwater Remed Ind | Yes |
| Water Contam Ind | Yes |
| Groundwater Contam Ind | Yes |
| Amount Released | 1 |
| Rel Water Name | N/a - Shallow Groundwater |
| 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 | 8000 |
| Est Cost Emergency | 9000 |
| Est Cost Environmental | 313000 |
| Est Cost Other | 0 |
| Est Cost Other Details | Environmental Monitoring And Reporting |
| Prpty | 330000 |
| Accident Psig | 315 |
| Mop Psig | 612 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 129360 |
| 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 | A dent with a fatigue crack was found as part of an assigned integrity dig. Control room did not play a role in this leak. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Material Failure Of Pipe Or Weld |
| Cause Details | Design-, Construction-, Installation-, Or Fabrication-Related |
| Field Exam Ind | Yes |
| Failure Type | Design-, Construction-, Installation-, Or Fabrication-Related |
| Fatigue Vibr Related | Yes |
| Failure Subtype | Other |
| Fatigue Vibr Related Other | Pipeline Resting On A Rock Generated A Fatigue Crack Within A Dent. |
| Additional Dent Ind | Yes |
| Additional Crack Ind | Yes |
| Collected Data Ind | Yes |
| Ultrasonic Ind | Yes |
| Geometry Deformation Ind | Yes |
| Emat Ind | Yes |
| Ultrasonic Recent Year | 2009 |
| Geometry Recent Year | 2009 |
| Emat Recent Year | 2009 |
| Has Hydrtst Conduc Before Ind | No |
| Direct Asmnt Conducted | No |
| Non Destructive Exam Ind | No |
| Preparer Name | S**** S**** |
| Preparer Title | Compliance Analyst |
| Preparer Email | S**********@e*******.com |
| Preparer Telephone | 218-464-5754 |
| Preparer Fax | 218-464-5992 |
| Prepared Date | 2013-09-27 00:00:00 |
| Authorizer Name | D**** S******* |
| Authorizer Telephone | 218-464-5751 |
| Authorizer Title | Manager Pipeline Compliance |
| Authorizer Email | D*************@e*******.com |
| Narrative | While performing a planned integrity assessment dig, traces of oil and stained soil/rock were noticed around the pipeline and the pipeline was shutdown as a precaution. After further investigation it was discovered that the pipeline was resting on a small rock. A small crack formed in the dent area and a small amount of crude had weeped through the crack-like defect (less than 5 gallons). The enbridge pipeline maintenance crew repaired the damaged pipe using a full encirclement pressure containing sleeve. On 6/12/10, during site restoration contract crews discovered some additional crude oil near the original area of the leak (approximately 1 barrel). As such, enbridge contacted the nrc (PHMSA and wdnr), as the volume released reached notification/reporting quantity. Contaminated soil has been removed and disposed at an approved landfill location and enbridge environmental department is planning a soil and groundwater investigation program to determine if additional impacts exist. Based on the environmental investigation groundwater impacts appear to be localized. Groundwater monitoring program has been developed and agreed upon with state environmental regulators. Update approximately 400 cubic yards of contaminated soil was removed from release site and disposed at an approved landfill. Enbridge environmental department is completing quarterly groundwater monitoring with possible site regulatory closure in late 2014. |
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