Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2025-07-24 — OK
Operator
Medallion Operating Company, Llc
Cause
Equipment Failure
Commodity
Crude Oil
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$0
Incident datetime
2025-07-24 00:00 UTC
Report number
Location
OK
Narrative
At 5:30 on 6/27/25, a oneok employee entered the sandhill facility and discovered a leaking pipe nipple located on the pump bypass valve. The employee immediately called the control room to inform them of the leak and the control room shut down the facility. The employee then notified local management at 5:35. Management deployed additional personnel to respond. Employees arrived to assess the leak and confirmed the source to be the pipe nipple located on the pump bypass valve. The valve was isolated to stop the leak and begin repairs. The nipple was replaced with a new extra heavy wall nipple. Once repairs were made, the facility was brought back in service at 6:55. To prevent reoccurrence in the future, operations located all nipples in the facility and replaced them with extra heavy wall nipples.
Detailed record list
Report Received Date
2025-07-24 00:00:00
Iyear
2025
Report Number
20250175
Supplemental Number
41269
Report Type
Supplemental
Operator Id
39183
Name
Medallion Operating Company, Llc
Operator Street Address
100 W Fifth Street
Operator City Name
Tulsa
Operator State Abbreviation
OK
Operator Postal Code
74103
Time Zone
Central
Daylight Savings Ind
Yes
Location Latitude
32.290179
Location Longitude
-101.411682
Commodity Released Type
Crude Oil
Unintentional Release Bbls
36.61
Recovered Bbls
28
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Ground Patrol By Operator Or Its Contractor
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
Yes
Oil Spill Removal Org Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Sandhill Pump Station
Segment Name
How-1005
Onshore State Abbreviation
Tx
Onshore Postal Code
79720
Onshore City Name
Big Spring
Onshore County Name
Howard
Designated Location
Survey Station No.
Designated Name
Sandhill
Federal
No
Location Type
Originated On Operator-Controlled Property, But Then Flowed Or Migrated Off The Property
Incident Area Type
Aboveground
Incident Area Subtype
Typical Aboveground Facility Piping Or Appurtenance
Crossing
No
Pipe Facility Type
Intrastate
Item Involved
Other
Item Involved Details
Nipple Located On The Pump Bypass Valve
Installation Year
2024
Manufactured Year
2023
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Connection Failure
Wildlife Impact Ind
No
Soil Contamination
Yes
Long Term Assessment
No
Remediation Ind
Yes
Soil Remed Ind
Yes
Water Contam Ind
No
Could Be Hca
No
Commodity Reached Hca
No
Est Cost Oper Paid
10000
Est Cost Gas Released
2600
Est Cost Prop Damage
0
Est Cost Emergency
7000
Est Cost Environmental
20000
Est Cost Other
0
Prpty
39600
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Accident Psig
819
Mop Psig
1440
Mop Cfr Section
Component Design Pressure �195.406(A)(2)
Maop Established Date
2022-10-07 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
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
No controllers actions had taken place prior 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
Pipe Nipple
Additional Vibration Ind
Yes
Preparer Name
G*** C*********
Preparer Title
Regulatory Compliance Specialist Ii
Preparer Email
G**************@o****.com
Preparer Telephone
9183818066
Prepared Date
2025-08-18 00:00:00
Authorizer Name
R*** M****
Authorizer Telephone
9183818066
Authorizer Title
Regulatory Compliance Manager
Authorizer Email
G**************@o****.com
Narrative
At 5:30 on 6/27/25, a oneok employee entered the sandhill facility and discovered a leaking pipe nipple located on the pump bypass valve. The employee immediately called the control room to inform them of the leak and the control room shut down the facility. The employee then notified local management at 5:35. Management deployed additional personnel to respond. Employees arrived to assess the leak and confirmed the source to be the pipe nipple located on the pump bypass valve. The valve was isolated to stop the leak and begin repairs. The nipple was replaced with a new extra heavy wall nipple. Once repairs were made, the facility was brought back in service at 6:55. To prevent reoccurrence in the future, operations located all nipples in the facility and replaced them with extra heavy wall nipples.
| Report Received Date | 2025-07-24 00:00:00 |
|---|---|
| Iyear | 2025 |
| Report Number | 20250175 |
| Supplemental Number | 41269 |
| Report Type | Supplemental |
| Operator Id | 39183 PHMSA Enforcement |
| Name | Medallion Operating Company, Llc |
| Operator Street Address | 100 W Fifth Street |
| Operator City Name | Tulsa |
| Operator State Abbreviation | OK |
| Operator Postal Code | 74103 |
| Time Zone | Central |
| Daylight Savings Ind | Yes |
| Location Latitude | 32.290179 Google Maps OpenStreetMap |
| Location Longitude | -101.411682 Google Maps OpenStreetMap |
| Commodity Released Type | Crude Oil |
| Unintentional Release Bbls | 36.61 |
| Recovered Bbls | 28 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Ground Patrol By Operator Or Its Contractor |
| 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 | Yes |
| Oil Spill Removal Org Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Sandhill Pump Station |
| Segment Name | How-1005 |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 79720 |
| Onshore City Name | Big Spring |
| Onshore County Name | Howard |
| Designated Location | Survey Station No. |
| Designated Name | Sandhill |
| Federal | No |
| Location Type | Originated On Operator-Controlled Property, But Then Flowed Or Migrated Off The Property |
| Incident Area Type | Aboveground |
| Incident Area Subtype | Typical Aboveground Facility Piping Or Appurtenance |
| Crossing | No |
| Pipe Facility Type | Intrastate |
| Item Involved | Other |
| Item Involved Details | Nipple Located On The Pump Bypass Valve |
| Installation Year | 2024 |
| Manufactured Year | 2023 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Connection Failure |
| Wildlife Impact Ind | No |
| Soil Contamination | Yes |
| Long Term Assessment | No |
| Remediation Ind | Yes |
| Soil Remed Ind | Yes |
| Water Contam Ind | No |
| Could Be Hca | No |
| Commodity Reached Hca | No |
| Est Cost Oper Paid | 10000 |
| Est Cost Gas Released | 2600 |
| Est Cost Prop Damage | 0 |
| Est Cost Emergency | 7000 |
| Est Cost Environmental | 20000 |
| Est Cost Other | 0 |
| Prpty | 39600 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Accident Psig | 819 |
| Mop Psig | 1440 |
| Mop Cfr Section | Component Design Pressure �195.406(A)(2) View CFR 49 §192 |
| Maop Established Date | 2022-10-07 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 | 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 | No controllers actions had taken place prior 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 | Pipe Nipple |
| Additional Vibration Ind | Yes |
| Preparer Name | G*** C********* |
| Preparer Title | Regulatory Compliance Specialist Ii |
| Preparer Email | G**************@o****.com |
| Preparer Telephone | 9183818066 |
| Prepared Date | 2025-08-18 00:00:00 |
| Authorizer Name | R*** M**** |
| Authorizer Telephone | 9183818066 |
| Authorizer Title | Regulatory Compliance Manager |
| Authorizer Email | G**************@o****.com |
| Narrative | At 5:30 on 6/27/25, a oneok employee entered the sandhill facility and discovered a leaking pipe nipple located on the pump bypass valve. The employee immediately called the control room to inform them of the leak and the control room shut down the facility. The employee then notified local management at 5:35. Management deployed additional personnel to respond. Employees arrived to assess the leak and confirmed the source to be the pipe nipple located on the pump bypass valve. The valve was isolated to stop the leak and begin repairs. The nipple was replaced with a new extra heavy wall nipple. Once repairs were made, the facility was brought back in service at 6:55. To prevent reoccurrence in the future, operations located all nipples in the facility and replaced them with extra heavy wall nipples. |
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