Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2010-07-29 — TX
Operator
Enbridge Energy, Limited Partnership
Cause
Equipment Failure
Commodity
Crude Oil
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$50,000
Incident datetime
2010-07-29 13:30
Report number
Location
TX
Narrative
At approximately 1:30 pm central time on july 29th, a cass lake technician noticed oil on the ground near unit 2.3 inside the n cass lake station property. The enbridge control center was contacted, the pumping units shut down, and flow redirected to bypass the station in order to isolate the location where approximately 2 barrels of oil had leaked. Bemidji emergency response crews were mobilized to investigate, contain and clean up the affected area. The crew excavated the impacted area and discovered the source of the leak to be a flange on the suction side of the unit 2.3 discharge valve. The flange was re-torqued per the company's o&mp procedures. Pumping unit 2.3 was restarted while onsite personnel remained for additional observation. Onsite personnel confirmed that no further leakage occurred. The incident was reported to the mn duty officer. At the time the leak was discovered, cleanup costs were not expected to reach $50,000. Once the costs were estimated to exceed the $50,000, enbridge contacted the nrc. An environmental consultant will sample the soil around the valve area to ensure all of the contaminated soil has been removed. The contaminated soil will be taken off site and properly disposed at an approved location. See attached uploaded file, january 2012 narrative.
Detailed record list
Report Received Date
2010-08-27 00:00:00
Iyear
2010
Report Number
20100185
Supplemental Number
18597
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
2010-07-29 13:30:00
Location Latitude
47.38361
Location Longitude
-94.63389
Commodity Released Type
Crude Oil
Unintentional Release Bbls
155
Intentional Release Bbls
0
Recovered Bbls
155
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
Incident Identified Datetime
2010-07-29 13:30:00
System Part Involved
Onshore Pump/meter Station Equipment And Piping
On Off Shore
Onshore
Shutdown Due Accident Ind
No
Shutdown Explain
North Cass Lake Station Was Isolated And Bypassed - Not Shutdown.
On Site Datetime
2010-07-29 13:45:00
Nrc Rpt Datetime
2010-08-07 08:15:00
Nrc Rpt Num
950197
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Line 2
Segment Name
N Cass Lake Station Unit 2.3
Onshore State Abbreviation
Mn
Onshore Postal Code
56633
Onshore City Name
Cass Lake
Onshore County Name
Cass
Designated Location
Milepost/valve Station
Federal
No
Location Type
Totally Contained On Operator-Controlled Property
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
42
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Flange Assembly
Installation Year
1988
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Other
Leak Type Other
Flange Leak
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
155
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
5600
Est Cost Prop Damage
50000
Est Cost Emergency
84000
Est Cost Environmental
690400
Est Cost Other
0
Prpty
830000
Accident Psig
423
Mop Psig
1300
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
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
Controller would no be able to detet such a small amount of product leaving the pipeline.
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
Other
Other Non Threaded Details
Flange Leak
Additional Installation Ind
Yes
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
2013-09-19 00:00:00
Authorizer Name
D**** S*******
Authorizer Telephone
218-464-5751
Authorizer Title
Manager Pipeline Safety Compliance
Authorizer Email
D*************@e*******.com
Narrative
At approximately 1:30 pm central time on july 29th, a cass lake technician noticed oil on the ground near unit 2.3 inside the n cass lake station property. The enbridge control center was contacted, the pumping units shut down, and flow redirected to bypass the station in order to isolate the location where approximately 2 barrels of oil had leaked. Bemidji emergency response crews were mobilized to investigate, contain and clean up the affected area. The crew excavated the impacted area and discovered the source of the leak to be a flange on the suction side of the unit 2.3 discharge valve. The flange was re-torqued per the company's o&mp procedures. Pumping unit 2.3 was restarted while onsite personnel remained for additional observation. Onsite personnel confirmed that no further leakage occurred. The incident was reported to the mn duty officer. At the time the leak was discovered, cleanup costs were not expected to reach $50,000. Once the costs were estimated to exceed the $50,000, enbridge contacted the nrc. An environmental consultant will sample the soil around the valve area to ensure all of the contaminated soil has been removed. The contaminated soil will be taken off site and properly disposed at an approved location. See attached uploaded file, january 2012 narrative.
| Report Received Date | 2010-08-27 00:00:00 |
|---|---|
| Iyear | 2010 |
| Report Number | 20100185 |
| Supplemental Number | 18597 |
| 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 | 2010-07-29 13:30:00 |
| Location Latitude | 47.38361 Google Maps OpenStreetMap |
| Location Longitude | -94.63389 Google Maps OpenStreetMap |
| Commodity Released Type | Crude Oil |
| Unintentional Release Bbls | 155 |
| Intentional Release Bbls | 0 |
| Recovered Bbls | 155 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| Incident Identified Datetime | 2010-07-29 13:30:00 |
| System Part Involved | Onshore Pump/meter Station Equipment And Piping |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | North Cass Lake Station Was Isolated And Bypassed - Not Shutdown. |
| On Site Datetime | 2010-07-29 13:45:00 |
| Nrc Rpt Datetime | 2010-08-07 08:15:00 |
| Nrc Rpt Num | 950197 NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Line 2 |
| Segment Name | N Cass Lake Station Unit 2.3 |
| Onshore State Abbreviation | Mn |
| Onshore Postal Code | 56633 |
| Onshore City Name | Cass Lake |
| Onshore County Name | Cass |
| Designated Location | Milepost/valve Station |
| Federal | No |
| Location Type | Totally Contained On Operator-Controlled Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 42 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Flange Assembly |
| Installation Year | 1988 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Other |
| Leak Type Other | Flange Leak |
| 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 | 155 |
| 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 | 5600 |
| Est Cost Prop Damage | 50000 |
| Est Cost Emergency | 84000 |
| Est Cost Environmental | 690400 |
| Est Cost Other | 0 |
| Prpty | 830000 |
| Accident Psig | 423 |
| Mop Psig | 1300 |
| 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 | 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 | Controller would no be able to detet such a small amount of product leaving the pipeline. |
| 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 | Other |
| Other Non Threaded Details | Flange Leak |
| Additional Installation Ind | Yes |
| 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 | 2013-09-19 00:00:00 |
| Authorizer Name | D**** S******* |
| Authorizer Telephone | 218-464-5751 |
| Authorizer Title | Manager Pipeline Safety Compliance |
| Authorizer Email | D*************@e*******.com |
| Narrative | At approximately 1:30 pm central time on july 29th, a cass lake technician noticed oil on the ground near unit 2.3 inside the n cass lake station property. The enbridge control center was contacted, the pumping units shut down, and flow redirected to bypass the station in order to isolate the location where approximately 2 barrels of oil had leaked. Bemidji emergency response crews were mobilized to investigate, contain and clean up the affected area. The crew excavated the impacted area and discovered the source of the leak to be a flange on the suction side of the unit 2.3 discharge valve. The flange was re-torqued per the company's o&mp procedures. Pumping unit 2.3 was restarted while onsite personnel remained for additional observation. Onsite personnel confirmed that no further leakage occurred. The incident was reported to the mn duty officer. At the time the leak was discovered, cleanup costs were not expected to reach $50,000. Once the costs were estimated to exceed the $50,000, enbridge contacted the nrc. An environmental consultant will sample the soil around the valve area to ensure all of the contaminated soil has been removed. The contaminated soil will be taken off site and properly disposed at an approved location. See attached uploaded file, january 2012 narrative. |
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