Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2010-07-28 — TX
Operator
Enbridge Energy, Limited Partnership
Cause
Equipment Failure
Commodity
Crude Oil
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
—
Incident datetime
2010-07-28 07:45
Report number
Location
TX
Narrative
Enbridge field laborers working along the right-of-way reported seeing evidence of oil on the ground around a mainline valve at mp-958.33, which is located north of hwy 2 on the east side of cass lake. The laborers contacted their supervisor who confirmed the release and mobilized enbridge response. Lines 1 and 2 in this route were shut down and valves on either side of the location isolated the section as a precaution. The pipeline maintenance supervisor, who responded to the site, confirmed the valve leak on line 1 and estimated a small amount of oil had been released on the ground around the valve. Enbridge maintenance personnel excavated, by hand, the soil around the site, evaluated the valve condition and confirmed that the valve stem packing was leaking. Enbridge maintenance personnel were able to make on site repairs to the valve stem packing. Estimated volume released was 10 gallons. Once the packing was repaired, the line was restarted at 17:45 pm local time. All affected soil has been removed and disposed at an appropriate off-site facility. The incident was reported to the mn duty officer and the national response center. A representative from mnops visited to inspect the site.
Detailed record list
Report Received Date
2010-08-27 00:00:00
Iyear
2010
Report Number
20100184
Supplemental Number
15264
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
2010-07-28 07:45:00
Location Latitude
47.372103
Location Longitude
-94.57539
Commodity Released Type
Crude Oil
Unintentional Release Bbls
0.23
Intentional Release Bbls
0
Recovered Bbls
0.23
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
Incident Identified Datetime
2010-07-28 07:45:00
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2010-07-28 08:00:00
Restart Datetime
2010-07-28 17:45:00
On Site Datetime
2010-07-28 07:55:00
Nrc Rpt Datetime
2010-07-28 10:37:00
Nrc Rpt Num
949152
Ignite Ind
No
Explode Ind
No
Upstream Valve Type Ind
Remotely Controlled
Downstream Valve Type Ind
Remotely Controlled
Pipe Fac Name
Line 1
Segment Name
Valve At Mp 958.33
Onshore State Abbreviation
Mn
Onshore Postal Code
56633
Onshore City Name
Cass Lake
Onshore County Name
Cass
Designated Location
Milepost/valve Station
Designated Name
958.33
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
6
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Valve
Valve Type
Mainline
Valve Mainline Type
Gate
Valve Manufacturer
M & J
Installation Year
1951
Manufactured Year
1951
Material Involved
Material Other Than Carbon Steel
Material Details
Valve Stem Packing
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
No
Commodity Reached Hca
No
Est Cost Emergency
3500
Est Cost Environmental
14852
Prpty
18352
Accident Psig
393
Mop Psig
837
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
171758
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
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 not be able to detect or control such a small release of product initiated from a valve stem packing.
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
Seal (Not Pump Seal) Or Packing
Eq Additional Other Ind
Yes
Eq Additional Other Details
Stem Nut Seal - Normal Wear.
Preparer Name
T****** P*****
Preparer Title
Compliance Analyst
Preparer Email
T*************@e*******.com
Preparer Telephone
715-394-1468
Preparer Fax
832-325-5477
Prepared Date
2010-08-27 00:00:00
Authorizer Name
D**** H******
Authorizer Telephone
715-394-1540
Authorizer Title
Supervisor Pipeline Safety Compliance
Authorizer Email
D************@e*******.com
Narrative
Enbridge field laborers working along the right-of-way reported seeing evidence of oil on the ground around a mainline valve at mp-958.33, which is located north of hwy 2 on the east side of cass lake. The laborers contacted their supervisor who confirmed the release and mobilized enbridge response. Lines 1 and 2 in this route were shut down and valves on either side of the location isolated the section as a precaution. The pipeline maintenance supervisor, who responded to the site, confirmed the valve leak on line 1 and estimated a small amount of oil had been released on the ground around the valve. Enbridge maintenance personnel excavated, by hand, the soil around the site, evaluated the valve condition and confirmed that the valve stem packing was leaking. Enbridge maintenance personnel were able to make on site repairs to the valve stem packing. Estimated volume released was 10 gallons. Once the packing was repaired, the line was restarted at 17:45 pm local time. All affected soil has been removed and disposed at an appropriate off-site facility. The incident was reported to the mn duty officer and the national response center. A representative from mnops visited to inspect the site.
| Report Received Date | 2010-08-27 00:00:00 |
|---|---|
| Iyear | 2010 |
| Report Number | 20100184 |
| Supplemental Number | 15264 |
| 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 | 2010-07-28 07:45:00 |
| Location Latitude | 47.372103 Google Maps OpenStreetMap |
| Location Longitude | -94.57539 Google Maps OpenStreetMap |
| Commodity Released Type | Crude Oil |
| Unintentional Release Bbls | 0.23 |
| Intentional Release Bbls | 0 |
| Recovered Bbls | 0.23 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| Incident Identified Datetime | 2010-07-28 07:45:00 |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2010-07-28 08:00:00 |
| Restart Datetime | 2010-07-28 17:45:00 |
| On Site Datetime | 2010-07-28 07:55:00 |
| Nrc Rpt Datetime | 2010-07-28 10:37:00 |
| Nrc Rpt Num | 949152 NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Upstream Valve Type Ind | Remotely Controlled |
| Downstream Valve Type Ind | Remotely Controlled |
| Pipe Fac Name | Line 1 |
| Segment Name | Valve At Mp 958.33 |
| Onshore State Abbreviation | Mn |
| Onshore Postal Code | 56633 |
| Onshore City Name | Cass Lake |
| Onshore County Name | Cass |
| Designated Location | Milepost/valve Station |
| Designated Name | 958.33 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 6 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Valve |
| Valve Type | Mainline |
| Valve Mainline Type | Gate |
| Valve Manufacturer | M & J |
| Installation Year | 1951 |
| Manufactured Year | 1951 |
| Material Involved | Material Other Than Carbon Steel |
| Material Details | Valve Stem Packing |
| 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 | No |
| Commodity Reached Hca | No |
| Est Cost Emergency | 3500 |
| Est Cost Environmental | 14852 |
| Prpty | 18352 |
| Accident Psig | 393 |
| Mop Psig | 837 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 171758 |
| 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 | 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 not be able to detect or control such a small release of product initiated from a valve stem packing. |
| 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 | Seal (Not Pump Seal) Or Packing |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | Stem Nut Seal - Normal Wear. |
| Preparer Name | T****** P***** |
| Preparer Title | Compliance Analyst |
| Preparer Email | T*************@e*******.com |
| Preparer Telephone | 715-394-1468 |
| Preparer Fax | 832-325-5477 |
| Prepared Date | 2010-08-27 00:00:00 |
| Authorizer Name | D**** H****** |
| Authorizer Telephone | 715-394-1540 |
| Authorizer Title | Supervisor Pipeline Safety Compliance |
| Authorizer Email | D************@e*******.com |
| Narrative | Enbridge field laborers working along the right-of-way reported seeing evidence of oil on the ground around a mainline valve at mp-958.33, which is located north of hwy 2 on the east side of cass lake. The laborers contacted their supervisor who confirmed the release and mobilized enbridge response. Lines 1 and 2 in this route were shut down and valves on either side of the location isolated the section as a precaution. The pipeline maintenance supervisor, who responded to the site, confirmed the valve leak on line 1 and estimated a small amount of oil had been released on the ground around the valve. Enbridge maintenance personnel excavated, by hand, the soil around the site, evaluated the valve condition and confirmed that the valve stem packing was leaking. Enbridge maintenance personnel were able to make on site repairs to the valve stem packing. Estimated volume released was 10 gallons. Once the packing was repaired, the line was restarted at 17:45 pm local time. All affected soil has been removed and disposed at an appropriate off-site facility. The incident was reported to the mn duty officer and the national response center. A representative from mnops visited to inspect the site. |
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