Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2025-07-25 — OK
Operator
Explorer Pipeline Co
Cause
Equipment Failure
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)
$150
Incident datetime
2025-07-25 00:00 UTC
Report number
Location
OK
Narrative
In november 2024 a valve was installed at the north houston meter station in harris county, texas. In june 2024 some stained gravel was identified at the station during a station walk around. The investigation determined that a threaded drain plug was weeping. It is estimated that 23-gallons were released.
Detailed record list
Report Received Date
2025-07-25 00:00:00
Iyear
2025
Report Number
20250178
Supplemental Number
41180
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
29.94632
Location Longitude
-95.416799
Commodity Released Type
Refined And/or Petroleum Product (Non-Hvl) Which Is A Liquid At Ambient Conditions
Commodity Subtype
Diesel, Fuel Oil, Kerosene, Jet Fuel
Unintentional Release Bbls
0.5
Recovered Bbls
0.5
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 Pipeline, Including Valve Sites
On Off Shore
Onshore
Status When Identified
Normal Operation, Includes Pauses Between Batches And During Maintenance
Shutdown Due Accident Ind
No
Shutdown Explain
Meter Station Isolated Since No Delivery.
Communication State Fed Ind
No
Nrc Rpt Num
Nrc Notification Not Required
Ignite Ind
No
Upstream Action Taken
Operational Control
Upstream Oprtnl Cntrl Detail
Meter Station Was Already Isolated From The Pipeline Since No Schedule Delivery.
Downstream Action Taken
Operational Control
Downstream Oprtnl Cntrl Detail
Meter Station Was Already Isolated From The Pipeline Since No Schedule Delivery.
Notify Qualified Indiv Ind
Yes
Oil Spill Removal Org Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Noth Houston Meter Station
Segment Name
Houston To Arlington
Onshore State Abbreviation
Tx
Onshore Postal Code
77060
Onshore City Name
Houston
Onshore County Name
Harris
Designated Location
Milepost
Designated Name
22.51
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
2024
Manufactured Year
Unknown
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Other
Leak Type Other
Threaded Connection On Plug.
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
60
Est Cost Prop Damage
150
Est Cost Emergency
1500
Est Cost Environmental
3500
Est Cost Other
0
Prpty
5210
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Accident Psig
5.5
Mop Psig
1480
Mop Cfr Section
Component Design Pressure �195.406(A)(2)
Maop Established Date
2024-11-02 00:00:00
Maop Reversal Flow Ind
No
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Internal Inspection Ind
No
Other Inspection Ind
Yes
Internal Inspection Details
The Valve Is Associated With Station Piping.
Operation Complications 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
The controllers actions did not cause or contribute to the release.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Threaded Connection/coupling Failure
Eq Failure Type
Threaded Connection/coupling Failure
Other Stripped Ind
Threaded Fitting
Additional Installation Ind
Yes
Preparer Name
K**** B****
Preparer Title
Manager Dot Amd Regulatory Compliance
Preparer Email
K*****@e***.com
Preparer Telephone
9184935104
Prepared Date
2025-07-25 00:00:00
Local Contact Name
J*** G****
Local Contact Email
Jguinn
Local Contact Telephone
9185913127
Authorizer Name
L***** S******
Authorizer Telephone
9183595471
Authorizer Title
Vp Hsse
Authorizer Email
L*******@e***.com
Narrative
In november 2024 a valve was installed at the north houston meter station in harris county, texas. In june 2024 some stained gravel was identified at the station during a station walk around. The investigation determined that a threaded drain plug was weeping. It is estimated that 23-gallons were released.
| Report Received Date | 2025-07-25 00:00:00 |
|---|---|
| Iyear | 2025 |
| Report Number | 20250178 |
| Supplemental Number | 41180 |
| 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 | 29.94632 Google Maps OpenStreetMap |
| Location Longitude | -95.416799 Google Maps OpenStreetMap |
| Commodity Released Type | Refined And/or Petroleum Product (Non-Hvl) Which Is A Liquid At Ambient Conditions |
| Commodity Subtype | Diesel, Fuel Oil, Kerosene, Jet Fuel |
| Unintentional Release Bbls | 0.5 |
| Recovered Bbls | 0.5 |
| 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 Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Status When Identified | Normal Operation, Includes Pauses Between Batches And During Maintenance |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | Meter Station Isolated Since No Delivery. |
| Communication State Fed Ind | No |
| Nrc Rpt Num | Nrc Notification Not Required NRC Report How to search |
| Ignite Ind | No |
| Upstream Action Taken | Operational Control |
| Upstream Oprtnl Cntrl Detail | Meter Station Was Already Isolated From The Pipeline Since No Schedule Delivery. |
| Downstream Action Taken | Operational Control |
| Downstream Oprtnl Cntrl Detail | Meter Station Was Already Isolated From The Pipeline Since No Schedule Delivery. |
| Notify Qualified Indiv Ind | Yes |
| Oil Spill Removal Org Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Noth Houston Meter Station |
| Segment Name | Houston To Arlington |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 77060 |
| Onshore City Name | Houston |
| Onshore County Name | Harris |
| Designated Location | Milepost |
| Designated Name | 22.51 |
| 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 | 2024 |
| Manufactured Year | Unknown |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Other |
| Leak Type Other | Threaded Connection On Plug. |
| 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 | 60 |
| Est Cost Prop Damage | 150 |
| Est Cost Emergency | 1500 |
| Est Cost Environmental | 3500 |
| Est Cost Other | 0 |
| Prpty | 5210 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Accident Psig | 5.5 |
| Mop Psig | 1480 |
| Mop Cfr Section | Component Design Pressure �195.406(A)(2) View CFR 49 §192 |
| Maop Established Date | 2024-11-02 00:00:00 |
| Maop Reversal Flow Ind | No |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Internal Inspection Ind | No |
| Other Inspection Ind | Yes |
| Internal Inspection Details | The Valve Is Associated With Station Piping. |
| Operation Complications 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 | The controllers actions did not cause or contribute to the release. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Threaded Connection/coupling Failure |
| Eq Failure Type | Threaded Connection/coupling Failure |
| Other Stripped Ind | Threaded Fitting |
| Additional Installation Ind | Yes |
| Preparer Name | K**** B**** |
| Preparer Title | Manager Dot Amd Regulatory Compliance |
| Preparer Email | K*****@e***.com |
| Preparer Telephone | 9184935104 |
| Prepared Date | 2025-07-25 00:00:00 |
| Local Contact Name | J*** G**** |
| Local Contact Email | Jguinn |
| Local Contact Telephone | 9185913127 |
| Authorizer Name | L***** S****** |
| Authorizer Telephone | 9183595471 |
| Authorizer Title | Vp Hsse |
| Authorizer Email | L*******@e***.com |
| Narrative | In november 2024 a valve was installed at the north houston meter station in harris county, texas. In june 2024 some stained gravel was identified at the station during a station walk around. The investigation determined that a threaded drain plug was weeping. It is estimated that 23-gallons were released. |
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