Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2025-08-15 — OK
Operator
Explorer Pipeline Co
Cause
Incorrect Operation
Commodity
Refined And/or Petroleum Product (Non-Hvl) Which Is A Liquid At Ambient Conditions
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$0
Incident datetime
2025-08-15 00:00 UTC
Report number
Location
OK
Narrative
On july 18, 2025, at 14:06 cst, scada alarms identified a potential release at the arlington tank farm manifold. The pipeline controller immediately notified local arlington personnel on site to investigate. Local personnel identified a half-inch ball valve on a sample line from the manifold was in the partial open position that allowed 19 gallons of gasoline to be released. The valve was immediately shut, stopping the release. An investigation was conducted that included interviews and a review of video surveillance. However, it hasn�t been determined how or when the valve could have been opened. The sample valves and lines have been shut off and plugged from the manifold, and are scjhuled to be removed.
Detailed record list
Report Received Date
2025-08-15 00:00:00
Iyear
2025
Report Number
20250188
Supplemental Number
41257
Report Type
Original
Operator Id
4805
Name
Explorer Pipeline Co
Operator Street Address
Po Box 2650
Operator City Name
Tulsa
Operator State Abbreviation
OK
Operator Postal Code
74101
Time Zone
Central
Daylight Savings Ind
Yes
Location Latitude
32.809162
Location Longitude
-97.101011
Commodity Released Type
Refined And/or Petroleum Product (Non-Hvl) Which Is A Liquid At Ambient Conditions
Commodity Subtype
Gasoline (Non-Ethanol)
Unintentional Release Bbls
0.5
Recovered Bbls
0.5
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 Terminal/tank Farm Equipment And Piping
On Off Shore
Onshore
Status When Identified
Normal Operation, Includes Pauses Between Batches And During Maintenance
Shutdown Due Accident Ind
No
Shutdown Explain
No, Half In Valve Was Shut From The Manifold.
Communication State Fed Ind
No
Nrc Rpt Num
Nrc Notification Not Required
Ignite Ind
No
Notify Qualified Indiv Ind
Yes
Oil Spill Removal Org Ind
Yes
Osro Arrived On Site Dt
7/18/2025 16:10
Num Pub Evacuated
0
Pipe Fac Name
Arlington Tank Farm
Segment Name
Arlingotn Tank Farm
Onshore State Abbreviation
Tx
Onshore Postal Code
76040
Onshore City Name
Euless
Onshore County Name
Tarrant
Designated Location
Milepost
Designated Name
264.47
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
Valve
Valve Type
Auxiliary Or Other Valve
Installation Year
Unknown
Manufactured Year
Unknown
Material Involved
Carbon Steel
Release Type
Overfill Or Overflow
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
36
Est Cost Prop Damage
0
Est Cost Emergency
0
Est Cost Environmental
500
Est Cost Other
0
Prpty
536
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Accident Psig
10
Mop Psig
275
Mop Cfr Section
Component Design Pressure �195.406(A)(2)
Maop Established Date
2019-04-02 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
Yes
Cpm Conf Ind
Yes
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
The controllers actions did not causse or contribute to the release.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Incorrect Operation
Cause Details
Valve Left Or Placed In Wrong Position, But Not Resulting In A Tank, Vessel, Or Sump/separator Overflow Or Facility Overpressure
Operation Type
Valve Left Or Placed In Wrong Position, But Not Resulting In A Tank, Vessel, Or Sump/separator Overflow Or Facility Overpressure
Related Other Ind
Yes
Operation Related Details
No Evidence Coudl Be Identnfied When The Valve Was Opened Or Last Used. Valve And Sample Lines Removed.
Category Type
Normal Operating Conditions
Operator Qualification Ind
No
Preparer Name
K**** E* B****
Preparer Title
Manager Dot And Regulatory Compliance
Preparer Email
K*****@e***.com
Preparer Telephone
9184935104
Prepared Date
2025-08-13 00:00:00
Local Contact Name
S*** F******
Local Contact Email
Sflahaut
Local Contact Telephone
9185913163
Authorizer Name
L***** S******
Authorizer Telephone
9183595471
Authorizer Title
Vp Hsse
Authorizer Email
L*******@e***.com
Narrative
On july 18, 2025, at 14:06 cst, scada alarms identified a potential release at the arlington tank farm manifold. The pipeline controller immediately notified local arlington personnel on site to investigate. Local personnel identified a half-inch ball valve on a sample line from the manifold was in the partial open position that allowed 19 gallons of gasoline to be released. The valve was immediately shut, stopping the release. An investigation was conducted that included interviews and a review of video surveillance. However, it hasn�t been determined how or when the valve could have been opened. The sample valves and lines have been shut off and plugged from the manifold, and are scjhuled to be removed.
| Report Received Date | 2025-08-15 00:00:00 |
|---|---|
| Iyear | 2025 |
| Report Number | 20250188 |
| Supplemental Number | 41257 |
| Report Type | Original |
| Operator Id | 4805 PHMSA Enforcement |
| Name | Explorer Pipeline Co |
| Operator Street Address | Po Box 2650 |
| Operator City Name | Tulsa |
| Operator State Abbreviation | OK |
| Operator Postal Code | 74101 |
| Time Zone | Central |
| Daylight Savings Ind | Yes |
| Location Latitude | 32.809162 Google Maps OpenStreetMap |
| Location Longitude | -97.101011 Google Maps OpenStreetMap |
| Commodity Released Type | Refined And/or Petroleum Product (Non-Hvl) Which Is A Liquid At Ambient Conditions |
| Commodity Subtype | Gasoline (Non-Ethanol) |
| Unintentional Release Bbls | 0.5 |
| Recovered Bbls | 0.5 |
| 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 Terminal/tank Farm Equipment And Piping |
| On Off Shore | Onshore |
| Status When Identified | Normal Operation, Includes Pauses Between Batches And During Maintenance |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | No, Half In Valve Was Shut From The Manifold. |
| Communication State Fed Ind | No |
| Nrc Rpt Num | Nrc Notification Not Required NRC Report How to search |
| Ignite Ind | No |
| Notify Qualified Indiv Ind | Yes |
| Oil Spill Removal Org Ind | Yes |
| Osro Arrived On Site Dt | 7/18/2025 16:10 |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Arlington Tank Farm |
| Segment Name | Arlingotn Tank Farm |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 76040 |
| Onshore City Name | Euless |
| Onshore County Name | Tarrant |
| Designated Location | Milepost |
| Designated Name | 264.47 |
| 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 | Valve |
| Valve Type | Auxiliary Or Other Valve |
| Installation Year | Unknown |
| Manufactured Year | Unknown |
| Material Involved | Carbon Steel |
| Release Type | Overfill Or Overflow |
| 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 | 36 |
| Est Cost Prop Damage | 0 |
| Est Cost Emergency | 0 |
| Est Cost Environmental | 500 |
| Est Cost Other | 0 |
| Prpty | 536 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Accident Psig | 10 |
| Mop Psig | 275 |
| Mop Cfr Section | Component Design Pressure �195.406(A)(2) View CFR 49 §192 |
| Maop Established Date | 2019-04-02 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 | Yes |
| Cpm Conf Ind | Yes |
| 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 | The controllers actions did not causse or contribute to the release. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Incorrect Operation |
| Cause Details | Valve Left Or Placed In Wrong Position, But Not Resulting In A Tank, Vessel, Or Sump/separator Overflow Or Facility Overpressure |
| Operation Type | Valve Left Or Placed In Wrong Position, But Not Resulting In A Tank, Vessel, Or Sump/separator Overflow Or Facility Overpressure |
| Related Other Ind | Yes |
| Operation Related Details | No Evidence Coudl Be Identnfied When The Valve Was Opened Or Last Used. Valve And Sample Lines Removed. |
| Category Type | Normal Operating Conditions |
| Operator Qualification Ind | No |
| Preparer Name | K**** E* B**** |
| Preparer Title | Manager Dot And Regulatory Compliance |
| Preparer Email | K*****@e***.com |
| Preparer Telephone | 9184935104 |
| Prepared Date | 2025-08-13 00:00:00 |
| Local Contact Name | S*** F****** |
| Local Contact Email | Sflahaut |
| Local Contact Telephone | 9185913163 |
| Authorizer Name | L***** S****** |
| Authorizer Telephone | 9183595471 |
| Authorizer Title | Vp Hsse |
| Authorizer Email | L*******@e***.com |
| Narrative | On july 18, 2025, at 14:06 cst, scada alarms identified a potential release at the arlington tank farm manifold. The pipeline controller immediately notified local arlington personnel on site to investigate. Local personnel identified a half-inch ball valve on a sample line from the manifold was in the partial open position that allowed 19 gallons of gasoline to be released. The valve was immediately shut, stopping the release. An investigation was conducted that included interviews and a review of video surveillance. However, it hasn�t been determined how or when the valve could have been opened. The sample valves and lines have been shut off and plugged from the manifold, and are scjhuled to be removed. |
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