Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2024-10-17 — TX
Operator
Enbridge Energy, Limited Partnership
Cause
Equipment Failure
Commodity
Crude Oil
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$925
Incident datetime
2024-10-17 00:00 UTC
Report number
Location
TX
Narrative
On september 17, 2024, at approximately 4:05 pm cdt, while technicians at the mokena station were performing unrelated work on line 14 assets, a plm laborer observed oil spraying out of the line 6 facility piping near the pressure transmitters. The edmonton control center was immediately notified of the release and line 6 was shut down. The affected equipment was isolated, and nearby field personnel responded to the release to begin cleanup. The source of the release was a 1-inch swagelok flex hose connecting mk-6-151-pit-1m/2m to the delivery pipe. The flex hose ruptured near the center of the hose braided length, releasing an estimated 40 gallons of crude oil. The failed flex hose was replaced with swagelok hardline tubing and all contaminated soil was removed from the release site. Further investigation determined that the integrity of the flex hose decreased over time due to the age of the asset leading to the eventual breakdown of material resulting in the release.
Detailed record list
Report Received Date
2024-10-17 00:00:00
Iyear
2024
Report Number
20240248
Supplemental Number
40120
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
Time Zone
Central
Daylight Savings Ind
Yes
Location Latitude
41.554276
Location Longitude
-87.885197
Commodity Released Type
Crude Oil
Unintentional Release Bbls
0.95
Recovered Bbls
0.95
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
System Part Involved
Onshore Pump/meter Station Equipment And Piping
On Off Shore
Onshore
Status When Identified
Normal Operation, Includes Pauses Between Batches And During Maintenance
Shutdown Due Accident Ind
Yes
Communication State Fed Ind
No
Nrc Rpt Num
Nrc Notification Not Required
Ignite Ind
No
Notify Qualified Indiv Ind
No
Oil Spill Removal Org Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Mokena Station
Segment Name
Mk-6-151-Pit-1m/2m
Onshore State Abbreviation
Il
Onshore Postal Code
60448
Onshore City Name
Mokena
Onshore County Name
Will
Designated Location
Milepost
Designated Name
438.39
Federal
No
Location Type
Totally Contained On Operator-Controlled Property
Incident Area Type
Aboveground
Incident Area Subtype
Typical Aboveground Facility Piping Or Appurtenance
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Tubing
Tubing Material
Stainless Steel
Tubing Type
Flexible
Installation Year
2007
Manufactured Year
2007
Material Involved
Material Other Than Carbon Steel
Material Details
Stainless Steel
Release Type
Leak
Leak Type
Crack
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
Est Cost Oper Paid
0
Est Cost Gas Released
70
Est Cost Prop Damage
925
Est Cost Emergency
4600
Est Cost Environmental
32235
Est Cost Other
0
Prpty
37830
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Accident Psig
54
Mop Psig
720
Mop Cfr Section
Component Design Pressure �195.406(A)(2)
Maop Established Date
2021-12-03 00:00:00
Maop Reversal Flow Ind
No
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
Lack of control center involvement. Field notification was required to identify and initiate the appropriate response to this event.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Other Equipment Failure
Eq Failure Type
Other Equipment Failure
Failure Details
Flex Hose
Eq Additional Other Ind
Yes
Eq Additional Other Details
Age Of Asset
Preparer Name
S**** S****
Preparer Title
Advisor Regulatory Compliance
Preparer Email
S**********@e*******.com
Preparer Telephone
7153953620
Prepared Date
2024-10-17 00:00:00
Authorizer Name
S**** D*****
Authorizer Telephone
7157181236
Authorizer Title
Supervisor Regulatory Compliance
Authorizer Email
S************@e*******.com
Narrative
On september 17, 2024, at approximately 4:05 pm cdt, while technicians at the mokena station were performing unrelated work on line 14 assets, a plm laborer observed oil spraying out of the line 6 facility piping near the pressure transmitters. The edmonton control center was immediately notified of the release and line 6 was shut down. The affected equipment was isolated, and nearby field personnel responded to the release to begin cleanup. The source of the release was a 1-inch swagelok flex hose connecting mk-6-151-pit-1m/2m to the delivery pipe. The flex hose ruptured near the center of the hose braided length, releasing an estimated 40 gallons of crude oil. The failed flex hose was replaced with swagelok hardline tubing and all contaminated soil was removed from the release site. Further investigation determined that the integrity of the flex hose decreased over time due to the age of the asset leading to the eventual breakdown of material resulting in the release.
| Report Received Date | 2024-10-17 00:00:00 |
|---|---|
| Iyear | 2024 |
| Report Number | 20240248 |
| Supplemental Number | 40120 |
| 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 |
| Time Zone | Central |
| Daylight Savings Ind | Yes |
| Location Latitude | 41.554276 Google Maps OpenStreetMap |
| Location Longitude | -87.885197 Google Maps OpenStreetMap |
| Commodity Released Type | Crude Oil |
| Unintentional Release Bbls | 0.95 |
| Recovered Bbls | 0.95 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| System Part Involved | Onshore Pump/meter Station Equipment And Piping |
| On Off Shore | Onshore |
| Status When Identified | Normal Operation, Includes Pauses Between Batches And During Maintenance |
| Shutdown Due Accident Ind | Yes |
| Communication State Fed Ind | No |
| Nrc Rpt Num | Nrc Notification Not Required NRC Report How to search |
| Ignite Ind | No |
| Notify Qualified Indiv Ind | No |
| Oil Spill Removal Org Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Mokena Station |
| Segment Name | Mk-6-151-Pit-1m/2m |
| Onshore State Abbreviation | Il |
| Onshore Postal Code | 60448 |
| Onshore City Name | Mokena |
| Onshore County Name | Will |
| Designated Location | Milepost |
| Designated Name | 438.39 |
| Federal | No |
| Location Type | Totally Contained On Operator-Controlled Property |
| Incident Area Type | Aboveground |
| Incident Area Subtype | Typical Aboveground Facility Piping Or Appurtenance |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Tubing |
| Tubing Material | Stainless Steel |
| Tubing Type | Flexible |
| Installation Year | 2007 |
| Manufactured Year | 2007 |
| Material Involved | Material Other Than Carbon Steel |
| Material Details | Stainless Steel |
| Release Type | Leak |
| Leak Type | Crack |
| 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 |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 70 |
| Est Cost Prop Damage | 925 |
| Est Cost Emergency | 4600 |
| Est Cost Environmental | 32235 |
| Est Cost Other | 0 |
| Prpty | 37830 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Accident Psig | 54 |
| Mop Psig | 720 |
| Mop Cfr Section | Component Design Pressure �195.406(A)(2) View CFR 49 §192 |
| Maop Established Date | 2021-12-03 00:00:00 |
| Maop Reversal Flow Ind | No |
| 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 | Lack of control center involvement. Field notification was required to identify and initiate the appropriate response to this event. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Other Equipment Failure |
| Eq Failure Type | Other Equipment Failure |
| Failure Details | Flex Hose |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | Age Of Asset |
| Preparer Name | S**** S**** |
| Preparer Title | Advisor Regulatory Compliance |
| Preparer Email | S**********@e*******.com |
| Preparer Telephone | 7153953620 |
| Prepared Date | 2024-10-17 00:00:00 |
| Authorizer Name | S**** D***** |
| Authorizer Telephone | 7157181236 |
| Authorizer Title | Supervisor Regulatory Compliance |
| Authorizer Email | S************@e*******.com |
| Narrative | On september 17, 2024, at approximately 4:05 pm cdt, while technicians at the mokena station were performing unrelated work on line 14 assets, a plm laborer observed oil spraying out of the line 6 facility piping near the pressure transmitters. The edmonton control center was immediately notified of the release and line 6 was shut down. The affected equipment was isolated, and nearby field personnel responded to the release to begin cleanup. The source of the release was a 1-inch swagelok flex hose connecting mk-6-151-pit-1m/2m to the delivery pipe. The flex hose ruptured near the center of the hose braided length, releasing an estimated 40 gallons of crude oil. The failed flex hose was replaced with swagelok hardline tubing and all contaminated soil was removed from the release site. Further investigation determined that the integrity of the flex hose decreased over time due to the age of the asset leading to the eventual breakdown of material resulting in the release. |
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