Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2018-07-26 — TX
Operator
Enbridge Energy, Limited Partnership
Cause
Corrosion Failure
Commodity
Crude Oil
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$22,636
Incident datetime
2018-07-26 11:30
Report number
Location
TX
Narrative
On july 26, 2018 at 11:30 am cdt, pipeline maintenance crews discovered a release of approximately two barrels of crude on the tank 10 outgoing line at the superior terminal. A pinhole was discovered in the 6:00 position adjacent to the weld joining the 45 degree elbow to the pipe. As a precautionary measure, an nde analysis was completed on the second weld associated with the elbow and along the bottom of the pipe in the vicinity of the leak. No other defects or corrosion were observed. An 18 inch sleeve was welded to the pipe on july 27, 2018 and the line was returned to service. The cause of the release has been attributed to isolated internal corrosion. Approximately 150 tons of contaminated soil was disposed of at an approved site.
Detailed record list
Report Received Date
2018-08-23 00:00:00
Iyear
2018
Report Number
20180250
Supplemental Number
30844
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
2018-07-26 11:30:00
Location Latitude
46.686986
Location Longitude
-92.057713
Commodity Released Type
Crude Oil
Unintentional Release Bbls
2
Recovered Bbls
2
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
2018-07-26 11:30:00
System Part Involved
Onshore Terminal/tank Farm Equipment And Piping
On Off Shore
Onshore
Shutdown Due Accident Ind
No
Shutdown Explain
Tank Line Was Isolated
On Site Datetime
2018-07-26 11:30:00
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 10 Piping
Onshore State Abbreviation
Wi
Onshore Postal Code
54880
Onshore City Name
Superior
Onshore County Name
Douglas
Designated Location
Milepost/valve Station
Designated Name
1098
Federal
No
Location Type
Totally Contained On Operator-Controlled Property
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
48
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Weld, Including Heat-Affected Zone
Pipe Diameter
34
Pipe Wall Thickness
0.281
Pipe Smys
52000
Pipe Specification
Api 5l
Pipe Seam Type
Erw - Low Frequency
Pipe Manufacturer
Unknown
Pipe Coating Type
Extruded Polyehylene
Weld Subtype
Pipe Girth Weld
Installation Year
Unknown
Manufactured Year
Unknown
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Pinhole
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
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
Usa Ecological Ind
Yes
Usa Ecological Yes No
Yes
Est Cost Oper Paid
0
Est Cost Gas Released
140
Est Cost Prop Damage
22636
Est Cost Emergency
452
Est Cost Environmental
10000
Est Cost Other
0
Prpty
33228
Accident Psig
7
Mop Psig
275
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
Lack of control center involvement. Release discovered by field personnel.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Corrosion Failure
Cause Details
Internal Corrosion
Internal External
Internal Corrosion
Int Visual Exam Results
Other
Int Visual Exam Details
Pinhole
Int Water Acid Ind
Yes
Int Field Exam Basis Ind
Yes
Int Elbow Loc Ind
Yes
Corrosion Inhibitors
No
Corrosion Lining
No
Cleaning Dewatering
Not Applicable - Not Mainline Pipe
Corrosion Coupons
Not Applicable - Not Mainline Pipe
Collected Data Ind
No
Has Hydrtst Conduc Before Ind
No
Direct Asmnt Conducted
No
Non Destructive Exam Ind
No
Preparer Name
S**** S****
Preparer Title
Sr. Compliance Analyst
Preparer Email
S**********@e*******.com
Preparer Telephone
715-395-3620
Prepared Date
2018-08-23 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 july 26, 2018 at 11:30 am cdt, pipeline maintenance crews discovered a release of approximately two barrels of crude on the tank 10 outgoing line at the superior terminal. A pinhole was discovered in the 6:00 position adjacent to the weld joining the 45 degree elbow to the pipe. As a precautionary measure, an nde analysis was completed on the second weld associated with the elbow and along the bottom of the pipe in the vicinity of the leak. No other defects or corrosion were observed. An 18 inch sleeve was welded to the pipe on july 27, 2018 and the line was returned to service. The cause of the release has been attributed to isolated internal corrosion. Approximately 150 tons of contaminated soil was disposed of at an approved site.
| Report Received Date | 2018-08-23 00:00:00 |
|---|---|
| Iyear | 2018 |
| Report Number | 20180250 |
| Supplemental Number | 30844 |
| 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 | 2018-07-26 11:30:00 |
| Location Latitude | 46.686986 Google Maps OpenStreetMap |
| Location Longitude | -92.057713 Google Maps OpenStreetMap |
| Commodity Released Type | Crude Oil |
| Unintentional Release Bbls | 2 |
| Recovered Bbls | 2 |
| 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 | 2018-07-26 11:30:00 |
| System Part Involved | Onshore Terminal/tank Farm Equipment And Piping |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | Tank Line Was Isolated |
| On Site Datetime | 2018-07-26 11:30:00 |
| 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 10 Piping |
| Onshore State Abbreviation | Wi |
| Onshore Postal Code | 54880 |
| Onshore City Name | Superior |
| Onshore County Name | Douglas |
| Designated Location | Milepost/valve Station |
| Designated Name | 1098 |
| Federal | No |
| Location Type | Totally Contained On Operator-Controlled Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 48 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Weld, Including Heat-Affected Zone |
| Pipe Diameter | 34 |
| Pipe Wall Thickness | 0.281 |
| Pipe Smys | 52000 |
| Pipe Specification | Api 5l |
| Pipe Seam Type | Erw - Low Frequency |
| Pipe Manufacturer | Unknown |
| Pipe Coating Type | Extruded Polyehylene |
| Weld Subtype | Pipe Girth Weld |
| Installation Year | Unknown |
| Manufactured Year | Unknown |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Pinhole |
| 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 |
| 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 |
| Usa Ecological Ind | Yes |
| Usa Ecological Yes No | Yes |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 140 |
| Est Cost Prop Damage | 22636 |
| Est Cost Emergency | 452 |
| Est Cost Environmental | 10000 |
| Est Cost Other | 0 |
| Prpty | 33228 |
| Accident Psig | 7 |
| Mop Psig | 275 |
| 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 | Lack of control center involvement. Release discovered by field personnel. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Corrosion Failure |
| Cause Details | Internal Corrosion |
| Internal External | Internal Corrosion |
| Int Visual Exam Results | Other |
| Int Visual Exam Details | Pinhole |
| Int Water Acid Ind | Yes |
| Int Field Exam Basis Ind | Yes |
| Int Elbow Loc Ind | Yes |
| Corrosion Inhibitors | No |
| Corrosion Lining | No |
| Cleaning Dewatering | Not Applicable - Not Mainline Pipe |
| Corrosion Coupons | Not Applicable - Not Mainline Pipe |
| Collected Data Ind | No |
| Has Hydrtst Conduc Before Ind | No |
| Direct Asmnt Conducted | No |
| Non Destructive Exam Ind | No |
| Preparer Name | S**** S**** |
| Preparer Title | Sr. Compliance Analyst |
| Preparer Email | S**********@e*******.com |
| Preparer Telephone | 715-395-3620 |
| Prepared Date | 2018-08-23 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 july 26, 2018 at 11:30 am cdt, pipeline maintenance crews discovered a release of approximately two barrels of crude on the tank 10 outgoing line at the superior terminal. A pinhole was discovered in the 6:00 position adjacent to the weld joining the 45 degree elbow to the pipe. As a precautionary measure, an nde analysis was completed on the second weld associated with the elbow and along the bottom of the pipe in the vicinity of the leak. No other defects or corrosion were observed. An 18 inch sleeve was welded to the pipe on july 27, 2018 and the line was returned to service. The cause of the release has been attributed to isolated internal corrosion. Approximately 150 tons of contaminated soil was disposed of at an approved site. |
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