Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2011-04-04 — TX
Operator
Enbridge Energy, Limited Partnership
Cause
Corrosion Failure
Commodity
Crude Oil
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$67,647
Incident datetime
2011-04-04 08:00
Report number
Location
TX
Narrative
On monday, april 4, 2011 superior terminal and plm personnel began investigating a show of oil near valve 221-v-sp1 which is located in the road ditch outside the se corner of the tank 8 berm. At the time of the discovery the volume and expected costs to manage the leak was anticipated to be less than $50,000. On april 8 it was determined that to fully investigate and remediate the cause of the leak, and specifically due to the constraints associated with excavation area (sheet pilling was necessary to make the area safe for further investigation), it was very likely that the $50,000 reportability threshold would be exceeded, and therefore the nrc was notified at this time. After further investigation, a pencil sized corrosion hole was discovered at the 6 o'clock position of the pipe. The pipe was temporarily repaired with a plidco split + sleeve and the permanent repair will be a pipe replacement which is scheduled for end of q2 2011. This replacement section of pipe will be redesigned to eliminate the "dead leg" area where the leak occurred.
Detailed record list
Report Received Date
2011-05-03 00:00:00
Iyear
2011
Report Number
20110130
Supplemental Number
18545
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
2011-04-04 08:00:00
Location Latitude
46.68889
Location Longitude
-92.05972
Commodity Released Type
Crude Oil
Unintentional Release Bbls
0.29
Intentional Release Bbls
0
Recovered Bbls
0.29
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
Incident Identified Datetime
2011-04-04 08:00:00
System Part Involved
Onshore Terminal/tank Farm Equipment And Piping
On Off Shore
Onshore
Shutdown Due Accident Ind
No
Shutdown Explain
Active Leak Was Not Suspected At This Time
On Site Datetime
2011-04-04 08:00:00
Nrc Rpt Datetime
2011-04-08 13:51:00
Nrc Rpt Num
972372
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Superior Terminal
Segment Name
Line 1 Facility Piping
Onshore State Abbreviation
Wi
Onshore Postal Code
54880
Onshore City Name
Superior
Onshore County Name
Douglas
Designated Location
Survey Station No.
Federal
No
Location Type
Totally Contained On Operator-Controlled Property
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
60
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Pipe
Pipe Type
Pipe Body
Pipe Diameter
18
Pipe Wall Thickness
0.281
Pipe Smys
42000
Pipe Specification
Api 5l X42
Pipe Seam Type
Erw - Low Frequency
Pipe Manufacturer
A O Smith
Pipe Coating Type
Coal Tar
Installation Year
1950
Manufactured Year
1950
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
Other Pop Ind
Yes
Other Pop Yes No
Yes
Usa Drinking Ind
Yes
Usa Drinking Yes No
Yes
Est Cost Oper Paid
0
Est Cost Gas Released
0
Est Cost Prop Damage
67647
Est Cost Emergency
47000
Est Cost Environmental
8000
Est Cost Other
0
Prpty
122647
Accident Psig
25
Mop Psig
262
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
Cause of leak was corrosion related.
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
General Corrosion
Int Microbiological Ind
Yes
Int Field Exam Basis Ind
Yes
Int Low Point Pipe 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
Compliance Analyst
Preparer Email
S**********@e*******.com
Preparer Telephone
218-464-5754
Preparer Fax
218-464-5992
Prepared Date
2013-09-12 00:00:00
Authorizer Name
D**** S*******
Authorizer Telephone
218-464-5751
Authorizer Title
Manager Pipeline Compliance
Authorizer Email
D*************@e*******.com
Narrative
On monday, april 4, 2011 superior terminal and plm personnel began investigating a show of oil near valve 221-v-sp1 which is located in the road ditch outside the se corner of the tank 8 berm. At the time of the discovery the volume and expected costs to manage the leak was anticipated to be less than $50,000. On april 8 it was determined that to fully investigate and remediate the cause of the leak, and specifically due to the constraints associated with excavation area (sheet pilling was necessary to make the area safe for further investigation), it was very likely that the $50,000 reportability threshold would be exceeded, and therefore the nrc was notified at this time. After further investigation, a pencil sized corrosion hole was discovered at the 6 o'clock position of the pipe. The pipe was temporarily repaired with a plidco split + sleeve and the permanent repair will be a pipe replacement which is scheduled for end of q2 2011. This replacement section of pipe will be redesigned to eliminate the "dead leg" area where the leak occurred.
| Report Received Date | 2011-05-03 00:00:00 |
|---|---|
| Iyear | 2011 |
| Report Number | 20110130 |
| Supplemental Number | 18545 |
| 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 | 2011-04-04 08:00:00 |
| Location Latitude | 46.68889 Google Maps OpenStreetMap |
| Location Longitude | -92.05972 Google Maps OpenStreetMap |
| Commodity Released Type | Crude Oil |
| Unintentional Release Bbls | 0.29 |
| Intentional Release Bbls | 0 |
| Recovered Bbls | 0.29 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| Incident Identified Datetime | 2011-04-04 08:00:00 |
| System Part Involved | Onshore Terminal/tank Farm Equipment And Piping |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | Active Leak Was Not Suspected At This Time |
| On Site Datetime | 2011-04-04 08:00:00 |
| Nrc Rpt Datetime | 2011-04-08 13:51:00 |
| Nrc Rpt Num | 972372 NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Superior Terminal |
| Segment Name | Line 1 Facility Piping |
| Onshore State Abbreviation | Wi |
| Onshore Postal Code | 54880 |
| Onshore City Name | Superior |
| Onshore County Name | Douglas |
| Designated Location | Survey Station No. |
| Federal | No |
| Location Type | Totally Contained On Operator-Controlled Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 60 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Pipe Diameter | 18 |
| Pipe Wall Thickness | 0.281 |
| Pipe Smys | 42000 |
| Pipe Specification | Api 5l X42 |
| Pipe Seam Type | Erw - Low Frequency |
| Pipe Manufacturer | A O Smith |
| Pipe Coating Type | Coal Tar |
| Installation Year | 1950 |
| Manufactured Year | 1950 |
| 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 |
| Other Pop Ind | Yes |
| Other Pop Yes No | Yes |
| Usa Drinking Ind | Yes |
| Usa Drinking Yes No | Yes |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 0 |
| Est Cost Prop Damage | 67647 |
| Est Cost Emergency | 47000 |
| Est Cost Environmental | 8000 |
| Est Cost Other | 0 |
| Prpty | 122647 |
| Accident Psig | 25 |
| Mop Psig | 262 |
| 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 | Cause of leak was corrosion related. |
| 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 | General Corrosion |
| Int Microbiological Ind | Yes |
| Int Field Exam Basis Ind | Yes |
| Int Low Point Pipe 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 | Compliance Analyst |
| Preparer Email | S**********@e*******.com |
| Preparer Telephone | 218-464-5754 |
| Preparer Fax | 218-464-5992 |
| Prepared Date | 2013-09-12 00:00:00 |
| Authorizer Name | D**** S******* |
| Authorizer Telephone | 218-464-5751 |
| Authorizer Title | Manager Pipeline Compliance |
| Authorizer Email | D*************@e*******.com |
| Narrative | On monday, april 4, 2011 superior terminal and plm personnel began investigating a show of oil near valve 221-v-sp1 which is located in the road ditch outside the se corner of the tank 8 berm. At the time of the discovery the volume and expected costs to manage the leak was anticipated to be less than $50,000. On april 8 it was determined that to fully investigate and remediate the cause of the leak, and specifically due to the constraints associated with excavation area (sheet pilling was necessary to make the area safe for further investigation), it was very likely that the $50,000 reportability threshold would be exceeded, and therefore the nrc was notified at this time. After further investigation, a pencil sized corrosion hole was discovered at the 6 o'clock position of the pipe. The pipe was temporarily repaired with a plidco split + sleeve and the permanent repair will be a pipe replacement which is scheduled for end of q2 2011. This replacement section of pipe will be redesigned to eliminate the "dead leg" area where the leak occurred. |
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