Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2024-07-01 — TX
Operator
Enbridge Energy, Limited Partnership
Cause
Equipment Failure
Commodity
Crude Oil
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$20,730
Incident datetime
2024-07-01 00:00 UTC
Report number
Location
TX
Narrative
On june 2, 2024, at 12:01 am the edmonton control center received a seal failure alarm for unit 1 at deer river station. The control center notified the on-call technician at 12:04 am to travel to the station to investigate. Shortly after at 12:12 am, the control center received additional leak detection alarms within the pumphouse which led them to shut down line 4 and isolate the entire line 4 deer river station. The technician arrived at 1:15 am and discovered crude oil leaking from the seal area of unit 1 onto the concrete floor of the pumphouse. At this time the manager on-call was notified, and crews were sent out to begin cleanup. Approximately 9.5 barrels of crude oil was released with 7.5 barrels being returned to the system. The majority of crude oil remained inside the pumphouse with approximately one gallon that migrated outside. The source of the release was identified as a failed pump seal on unit 1. Crude oil was cleaned up and clean up material was properly disposed. The cause of the release was determined to be due to a substantial check valve slam event which caused a water hammer effect upstream of 4-ucv-21, the unit check valve for deer river line 4 unit 2, ultimately leading to the failure of the unit 1 mechanical seal. The seal was replaced, and unit 1 was returned to service.
Detailed record list
Report Received Date
2024-07-01 00:00:00
Iyear
2024
Report Number
20240157
Supplemental Number
39740
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
47.325397
Location Longitude
-93.764481
Commodity Released Type
Crude Oil
Unintentional Release Bbls
9.5
Recovered Bbls
9.5
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Or Pack Calculations)
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
Deer River Station
Segment Name
Line 4 Unit 1
Onshore State Abbreviation
Mn
Onshore Postal Code
56636
Onshore City Name
Deer River
Onshore County Name
Itasca
Designated Location
Milepost
Designated Name
995.9
Federal
No
Location Type
Totally Contained On Operator-Controlled Property
Incident Area Type
Aboveground
Incident Area Subtype
Inside A Building
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Pump
Pump Type
Centrifugal
Pump Service Type
Mainline
Installation Year
2002
Manufactured Year
2002
Material Involved
Carbon Steel
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
Yes
Commodity Reached Hca
Yes
Other Pop Ind
Yes
Other Pop Yes No
Yes
Est Cost Oper Paid
0
Est Cost Gas Released
190
Est Cost Prop Damage
20730
Est Cost Emergency
7670
Est Cost Environmental
1500
Est Cost Other
0
Prpty
30090
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Accident Psig
103
Mop Psig
1440
Mop Cfr Section
Component Design Pressure �195.406(A)(2)
Maop Established Date
2022-10-04 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
Yes
Scada Conf Ind
Yes
Cpm In Place Ind
Yes
Cpm Operating Ind
Yes
Cpm Functional Ind
Yes
Cpm Detection Ind
No
Cpm Conf Ind
No
Investigation Status
Yes, specify investigation result(s): (select all that apply)
Invest No Control Room Ind
Yes
Invest No Controller Ind
Yes
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Pump Or Pump-Related Equipment
Eq Failure Type
Pump Or Pump-Related Equipment
Other Pump Ind
Seal/packing Failure
Additional Vibration Ind
Yes
Preparer Name
S**** S****
Preparer Title
Advisor Regulatory Compliance
Preparer Email
S**********@e*******.com
Preparer Telephone
7153953620
Prepared Date
2024-07-01 00:00:00
Authorizer Name
L*** S**********
Authorizer Telephone
7153941584
Authorizer Title
Supervisor Regulatory Compliance
Authorizer Email
L***************@e*******.com
Narrative
On june 2, 2024, at 12:01 am the edmonton control center received a seal failure alarm for unit 1 at deer river station. The control center notified the on-call technician at 12:04 am to travel to the station to investigate. Shortly after at 12:12 am, the control center received additional leak detection alarms within the pumphouse which led them to shut down line 4 and isolate the entire line 4 deer river station. The technician arrived at 1:15 am and discovered crude oil leaking from the seal area of unit 1 onto the concrete floor of the pumphouse. At this time the manager on-call was notified, and crews were sent out to begin cleanup. Approximately 9.5 barrels of crude oil was released with 7.5 barrels being returned to the system. The majority of crude oil remained inside the pumphouse with approximately one gallon that migrated outside. The source of the release was identified as a failed pump seal on unit 1. Crude oil was cleaned up and clean up material was properly disposed. The cause of the release was determined to be due to a substantial check valve slam event which caused a water hammer effect upstream of 4-ucv-21, the unit check valve for deer river line 4 unit 2, ultimately leading to the failure of the unit 1 mechanical seal. The seal was replaced, and unit 1 was returned to service.
| Report Received Date | 2024-07-01 00:00:00 |
|---|---|
| Iyear | 2024 |
| Report Number | 20240157 |
| Supplemental Number | 39740 |
| 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 | 47.325397 Google Maps OpenStreetMap |
| Location Longitude | -93.764481 Google Maps OpenStreetMap |
| Commodity Released Type | Crude Oil |
| Unintentional Release Bbls | 9.5 |
| Recovered Bbls | 9.5 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Or Pack Calculations) |
| 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 | Deer River Station |
| Segment Name | Line 4 Unit 1 |
| Onshore State Abbreviation | Mn |
| Onshore Postal Code | 56636 |
| Onshore City Name | Deer River |
| Onshore County Name | Itasca |
| Designated Location | Milepost |
| Designated Name | 995.9 |
| Federal | No |
| Location Type | Totally Contained On Operator-Controlled Property |
| Incident Area Type | Aboveground |
| Incident Area Subtype | Inside A Building |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Pump |
| Pump Type | Centrifugal |
| Pump Service Type | Mainline |
| Installation Year | 2002 |
| Manufactured Year | 2002 |
| Material Involved | Carbon Steel |
| 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 | Yes |
| Commodity Reached Hca | Yes |
| Other Pop Ind | Yes |
| Other Pop Yes No | Yes |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 190 |
| Est Cost Prop Damage | 20730 |
| Est Cost Emergency | 7670 |
| Est Cost Environmental | 1500 |
| Est Cost Other | 0 |
| Prpty | 30090 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Accident Psig | 103 |
| Mop Psig | 1440 |
| Mop Cfr Section | Component Design Pressure �195.406(A)(2) View CFR 49 §192 |
| Maop Established Date | 2022-10-04 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 | Yes |
| Scada Conf Ind | Yes |
| Cpm In Place Ind | Yes |
| Cpm Operating Ind | Yes |
| Cpm Functional Ind | Yes |
| Cpm Detection Ind | No |
| Cpm Conf Ind | No |
| Investigation Status | Yes, specify investigation result(s): (select all that apply) |
| Invest No Control Room Ind | Yes |
| Invest No Controller Ind | Yes |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Pump Or Pump-Related Equipment |
| Eq Failure Type | Pump Or Pump-Related Equipment |
| Other Pump Ind | Seal/packing Failure |
| Additional Vibration Ind | Yes |
| Preparer Name | S**** S**** |
| Preparer Title | Advisor Regulatory Compliance |
| Preparer Email | S**********@e*******.com |
| Preparer Telephone | 7153953620 |
| Prepared Date | 2024-07-01 00:00:00 |
| Authorizer Name | L*** S********** |
| Authorizer Telephone | 7153941584 |
| Authorizer Title | Supervisor Regulatory Compliance |
| Authorizer Email | L***************@e*******.com |
| Narrative | On june 2, 2024, at 12:01 am the edmonton control center received a seal failure alarm for unit 1 at deer river station. The control center notified the on-call technician at 12:04 am to travel to the station to investigate. Shortly after at 12:12 am, the control center received additional leak detection alarms within the pumphouse which led them to shut down line 4 and isolate the entire line 4 deer river station. The technician arrived at 1:15 am and discovered crude oil leaking from the seal area of unit 1 onto the concrete floor of the pumphouse. At this time the manager on-call was notified, and crews were sent out to begin cleanup. Approximately 9.5 barrels of crude oil was released with 7.5 barrels being returned to the system. The majority of crude oil remained inside the pumphouse with approximately one gallon that migrated outside. The source of the release was identified as a failed pump seal on unit 1. Crude oil was cleaned up and clean up material was properly disposed. The cause of the release was determined to be due to a substantial check valve slam event which caused a water hammer effect upstream of 4-ucv-21, the unit check valve for deer river line 4 unit 2, ultimately leading to the failure of the unit 1 mechanical seal. The seal was replaced, and unit 1 was returned to service. |
External Resources
PHMSA pipeline safety insights.
Product
Features
Company
All rights reserved. Copyright © by ClearPHMSA