Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2025-06-19 — TX
Operator
Kinder Morgan Liquid Terminals, Llc
Cause
Other Outside Force Damage
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)
$50,000
Incident datetime
2025-06-19 00:00 UTC
Report number
Location
TX
Narrative
At approximately 1515 on may 21, 2025, a 2nd party contractor reported product coming out of the roof drains of a nearby tank. Upon investigation, it was found that product had come from the roof drain of tank 150-53. The investigation determined that the release was due to a damaged roof seal from a third-party pipeline pigging operation. During the pigging process, nitrogen unintentionally bypassed the pig and entered the tank. The rapid expansion of nitrogen within the tank damaged the primary and secondary seals, allowing product to accumulate on the external floating roof and flow through the roof drain. All product and affected soil were recovered. The area was foamed to suppress vapors, and the product was removed from the tank.
Detailed record list
Report Received Date
2025-06-19 00:00:00
Iyear
2025
Report Number
20250153
Supplemental Number
41218
Report Type
Supplemental
Operator Id
26041
Name
Kinder Morgan Liquid Terminals, Llc
Operator Street Address
1001 Louisiana St, Suite 1000
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Time Zone
Central
Daylight Savings Ind
Yes
Location Latitude
29.732283
Location Longitude
-95.199113
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
69
Recovered Bbls
69
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Contractor Working For The Operator
System Part Involved
Onshore Breakout Tank Or Storage Vessel, Including Attached Appurtenances
On Off Shore
Onshore
Status When Identified
Normal Operation, Includes Pauses Between Batches And During Maintenance
Shutdown Due Accident Ind
Yes
Still Shutdown Ind
Yes
Communication State Fed Ind
Yes
Party Initiated Communication
Operator
Nrc Rpt Num
1431791
Additional Nrc Report Numbers
1431834; 1431980
Ignite Ind
No
Notify Qualified Indiv Ind
Yes
Oil Spill Removal Org Ind
Yes
Osro Arrived On Site Dt
5/21/2025 23:00
Num Pub Evacuated
0
Pipe Fac Name
Pasadena Terminal
Segment Name
Tank 150-53
Onshore State Abbreviation
Tx
Onshore Postal Code
77506
Onshore City Name
Pasadena
Onshore County Name
Harris
Designated Location
Milepost
Designated Name
0
Federal
No
Location Type
Originated On Operator-Controlled Property, But Then Flowed Or Migrated Off The Property
Incident Area Type
Tank, Including Attached Appurtenances
Crossing
No
Pipe Facility Type
Intrastate
Item Involved
Tank/vessel
Tank Vessel Subtype
Roof/roof Seal
Tank Type
Atmospheric
Safe Fill Level
48.4
Safe Fill Level Exceeded Ind
No
Api Std Out Of Service Year
2024
Api Std In Service Year
2024
Installation Year
2005
Manufactured Year
2005
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Seal Or Packing
Wildlife Impact Ind
No
Soil Contamination
No
Long Term Assessment
No
Remediation Ind
Yes
Soil Remed Ind
Yes
Water Contam Ind
Yes
Ocean Seawater Ind
Yes
Amount Released
1
Rel Water Name
Houston Ship Channel
Could Be Hca
Yes
Commodity Reached Hca
Yes
Commercially Nav Ind
Yes
Commercially Nav Yes No
Yes
High Pop Ind
Yes
High Pop Yes No
Yes
Other Pop Ind
Yes
Other Pop Yes No
Yes
Usa Drinking Ind
Yes
Usa Drinking Yes No
Yes
Usa Ecological Ind
Yes
Usa Ecological Yes No
Yes
Est Cost Oper Paid
0
Est Cost Gas Released
10000
Est Cost Prop Damage
50000
Est Cost Emergency
0
Est Cost Environmental
17250
Est Cost Other
0
Prpty
77250
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Accident Psig
22
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
The release was caused by a third-party pigging operation which resulted in a seal to fail to the kinder morgan tank.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Other Outside Force Damage
Cause Details
Other Outside Force Damage
Outside Force Type
Other Outside Force Damage
Osf Other Details
A Third-Party Company Was Conducting Pigging Operations. During The Pigging Nitrogen Pressure Built Up, Eventually Causing The Seals To Fail.
Preparer Name
S** B** M******
Preparer Title
Pipeline Engineer
Preparer Email
S*************@k***********.com
Preparer Telephone
713-410-0424
Prepared Date
2025-08-05 00:00:00
Local Contact Name
B**** T*******
Local Contact Email
B*************@k***********.com
Local Contact Telephone
281-740-1380
Authorizer Name
D** G******
Authorizer Telephone
713-240-2422
Authorizer Title
Manager Engineering
Authorizer Email
D****************@k***********.com
Narrative
At approximately 1515 on may 21, 2025, a 2nd party contractor reported product coming out of the roof drains of a nearby tank. Upon investigation, it was found that product had come from the roof drain of tank 150-53. The investigation determined that the release was due to a damaged roof seal from a third-party pipeline pigging operation. During the pigging process, nitrogen unintentionally bypassed the pig and entered the tank. The rapid expansion of nitrogen within the tank damaged the primary and secondary seals, allowing product to accumulate on the external floating roof and flow through the roof drain. All product and affected soil were recovered. The area was foamed to suppress vapors, and the product was removed from the tank.
| Report Received Date | 2025-06-19 00:00:00 |
|---|---|
| Iyear | 2025 |
| Report Number | 20250153 |
| Supplemental Number | 41218 |
| Report Type | Supplemental |
| Operator Id | 26041 PHMSA Enforcement |
| Name | Kinder Morgan Liquid Terminals, Llc |
| Operator Street Address | 1001 Louisiana St, Suite 1000 |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77002 |
| Time Zone | Central |
| Daylight Savings Ind | Yes |
| Location Latitude | 29.732283 Google Maps OpenStreetMap |
| Location Longitude | -95.199113 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 | 69 |
| Recovered Bbls | 69 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Contractor Working For The Operator |
| System Part Involved | Onshore Breakout Tank Or Storage Vessel, Including Attached Appurtenances |
| On Off Shore | Onshore |
| Status When Identified | Normal Operation, Includes Pauses Between Batches And During Maintenance |
| Shutdown Due Accident Ind | Yes |
| Still Shutdown Ind | Yes |
| Communication State Fed Ind | Yes |
| Party Initiated Communication | Operator |
| Nrc Rpt Num | 1431791 NRC Report How to search |
| Additional Nrc Report Numbers | 1431834; 1431980 |
| Ignite Ind | No |
| Notify Qualified Indiv Ind | Yes |
| Oil Spill Removal Org Ind | Yes |
| Osro Arrived On Site Dt | 5/21/2025 23:00 |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Pasadena Terminal |
| Segment Name | Tank 150-53 |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 77506 |
| Onshore City Name | Pasadena |
| Onshore County Name | Harris |
| Designated Location | Milepost |
| Designated Name | 0 |
| Federal | No |
| Location Type | Originated On Operator-Controlled Property, But Then Flowed Or Migrated Off The Property |
| Incident Area Type | Tank, Including Attached Appurtenances |
| Crossing | No |
| Pipe Facility Type | Intrastate |
| Item Involved | Tank/vessel |
| Tank Vessel Subtype | Roof/roof Seal |
| Tank Type | Atmospheric |
| Safe Fill Level | 48.4 |
| Safe Fill Level Exceeded Ind | No |
| Api Std Out Of Service Year | 2024 |
| Api Std In Service Year | 2024 |
| Installation Year | 2005 |
| Manufactured Year | 2005 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Seal Or Packing |
| Wildlife Impact Ind | No |
| Soil Contamination | No |
| Long Term Assessment | No |
| Remediation Ind | Yes |
| Soil Remed Ind | Yes |
| Water Contam Ind | Yes |
| Ocean Seawater Ind | Yes |
| Amount Released | 1 |
| Rel Water Name | Houston Ship Channel |
| Could Be Hca | Yes |
| Commodity Reached Hca | Yes |
| Commercially Nav Ind | Yes |
| Commercially Nav Yes No | Yes |
| High Pop Ind | Yes |
| High Pop Yes No | Yes |
| Other Pop Ind | Yes |
| Other Pop Yes No | Yes |
| Usa Drinking Ind | Yes |
| Usa Drinking Yes No | Yes |
| Usa Ecological Ind | Yes |
| Usa Ecological Yes No | Yes |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 10000 |
| Est Cost Prop Damage | 50000 |
| Est Cost Emergency | 0 |
| Est Cost Environmental | 17250 |
| Est Cost Other | 0 |
| Prpty | 77250 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Accident Psig | 22 |
| 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 | The release was caused by a third-party pigging operation which resulted in a seal to fail to the kinder morgan tank. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Other Outside Force Damage |
| Cause Details | Other Outside Force Damage |
| Outside Force Type | Other Outside Force Damage |
| Osf Other Details | A Third-Party Company Was Conducting Pigging Operations. During The Pigging Nitrogen Pressure Built Up, Eventually Causing The Seals To Fail. |
| Preparer Name | S** B** M****** |
| Preparer Title | Pipeline Engineer |
| Preparer Email | S*************@k***********.com |
| Preparer Telephone | 713-410-0424 |
| Prepared Date | 2025-08-05 00:00:00 |
| Local Contact Name | B**** T******* |
| Local Contact Email | B*************@k***********.com |
| Local Contact Telephone | 281-740-1380 |
| Authorizer Name | D** G****** |
| Authorizer Telephone | 713-240-2422 |
| Authorizer Title | Manager Engineering |
| Authorizer Email | D****************@k***********.com |
| Narrative | At approximately 1515 on may 21, 2025, a 2nd party contractor reported product coming out of the roof drains of a nearby tank. Upon investigation, it was found that product had come from the roof drain of tank 150-53. The investigation determined that the release was due to a damaged roof seal from a third-party pipeline pigging operation. During the pigging process, nitrogen unintentionally bypassed the pig and entered the tank. The rapid expansion of nitrogen within the tank damaged the primary and secondary seals, allowing product to accumulate on the external floating roof and flow through the roof drain. All product and affected soil were recovered. The area was foamed to suppress vapors, and the product was removed from the tank. |
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