Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2025-05-27 — TX
Operator
Enterprise Products Operating Llc
Cause
Equipment Failure
Commodity
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$82,000
Incident datetime
2025-05-27 00:00 UTC
Report number
Location
TX
Narrative
On 05/05/2025, while leak checking the mainline valve at county road 99 during the commissioning of tx-219c bubbles were observed on the valve bonnet. Product release was estimated to be less than 5 gallons. The commissioning was shut down and the segment blocked in. On 05/08/2025 at 09:10 am, the cost to repair valve at cr 99 was estimated to exceed $50k and the leak was determined as nrc reportable. Nrc was notified at 09:18 am (nrc#1430534) and transportation compliance notified texas railroad commission at 10:10 am. Valve repair has been completed.
Detailed record list
Report Received Date
2025-05-27 00:00:00
Iyear
2025
Report Number
20250129
Supplemental Number
41060
Report Type
Supplemental Final
Operator Id
31618
Name
Enterprise Products Operating Llc
Operator Street Address
1100 Louisiana Street
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Time Zone
Central
Daylight Savings Ind
No
Location Latitude
29.508294
Location Longitude
-95.289779
Commodity Released Type
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Commodity Subtype
Other Hvl
Commodity Details
Propylene
Unintentional Release Bbls
0.1
Intentional Release Bbls
175
Recovered Bbls
0
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 Pipeline, Including Valve Sites
On Off Shore
Onshore
Status When Identified
Post-Construction Commissioning
Communication State Fed Ind
No
Nrc Rpt Num
1430534
Additional Nrc Report Numbers
1430705
Ignite Ind
No
Upstream Action Taken
Operational Control
Upstream Oprtnl Cntrl Detail
Station Was Locked.
Downstream Action Taken
Operational Control
Downstream Oprtnl Cntrl Detail
Station Was Locked.
Num Pub Evacuated
0
Pipe Fac Name
Vanderbilt To Clear Lake Gas Plant
Segment Name
Tx-219c
Onshore State Abbreviation
Tx
Onshore Postal Code
77584
Onshore City Name
Pearland
Onshore County Name
Brazoria
Designated Location
Survey Station No.
Designated Name
5073+41
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
Intrastate
Item Involved
Valve
Valve Type
Mainline
Valve Mainline Type
Gate
Valve Manufacturer
Wkm
Installation Year
Unknown
Manufactured Year
Unknown
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Other
Leak Type Other
O-Ring Failure
Wildlife Impact Ind
No
Soil Contamination
No
Long Term Assessment
No
Remediation Ind
No
Water Contam Ind
No
Could Be Hca
No
Commodity Reached Hca
No
Est Cost Oper Paid
0
Est Cost Gas Released
0
Est Cost Prop Damage
82000
Est Cost Emergency
0
Est Cost Environmental
0
Est Cost Other
0
Prpty
82000
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Accident Psig
70
Mop Psig
1440
Mop Cfr Section
Component Design Pressure �195.406(A)(2)
Maop Established Date
1993-12-04 00:00:00
Maop Reversal Flow Ind
No
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Internal Inspection Ind
Yes
Operation Complications Ind
No
Pipeline Function
> 20% Smys Regulated Transmission
Scada In Place 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 pipeline was being controlled locally by technicians during commissioning activities and all devices were placed in local control.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Malfunction Of Control/relief Equipment
Eq Failure Type
Malfunction Of Control/relief Equipment
Block Valve Ind
Yes
Eq Additional Other Ind
Yes
Eq Additional Other Details
O-Ring Failure
Preparer Name
U*** A******
Preparer Title
Pipeline Compliance Engineer
Preparer Email
U********@e****.com
Preparer Telephone
713-381-3818
Prepared Date
2025-06-19 00:00:00
Local Contact Name
U*** A******
Local Contact Email
U********@e****.com
Local Contact Telephone
713-381-3818
Authorizer Name
U*** A******
Authorizer Telephone
713-381-3818
Authorizer Title
Pipeline Compliance Engineer
Authorizer Email
U********@e****.com
Narrative
On 05/05/2025, while leak checking the mainline valve at county road 99 during the commissioning of tx-219c bubbles were observed on the valve bonnet. Product release was estimated to be less than 5 gallons. The commissioning was shut down and the segment blocked in. On 05/08/2025 at 09:10 am, the cost to repair valve at cr 99 was estimated to exceed $50k and the leak was determined as nrc reportable. Nrc was notified at 09:18 am (nrc#1430534) and transportation compliance notified texas railroad commission at 10:10 am. Valve repair has been completed.
| Report Received Date | 2025-05-27 00:00:00 |
|---|---|
| Iyear | 2025 |
| Report Number | 20250129 |
| Supplemental Number | 41060 |
| Report Type | Supplemental Final |
| Operator Id | 31618 PHMSA Enforcement |
| Name | Enterprise Products Operating Llc |
| Operator Street Address | 1100 Louisiana Street |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77002 |
| Time Zone | Central |
| Daylight Savings Ind | No |
| Location Latitude | 29.508294 Google Maps OpenStreetMap |
| Location Longitude | -95.289779 Google Maps OpenStreetMap |
| Commodity Released Type | Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions |
| Commodity Subtype | Other Hvl |
| Commodity Details | Propylene |
| Unintentional Release Bbls | 0.1 |
| Intentional Release Bbls | 175 |
| Recovered Bbls | 0 |
| 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 Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Status When Identified | Post-Construction Commissioning |
| Communication State Fed Ind | No |
| Nrc Rpt Num | 1430534 NRC Report How to search |
| Additional Nrc Report Numbers | 1430705 |
| Ignite Ind | No |
| Upstream Action Taken | Operational Control |
| Upstream Oprtnl Cntrl Detail | Station Was Locked. |
| Downstream Action Taken | Operational Control |
| Downstream Oprtnl Cntrl Detail | Station Was Locked. |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Vanderbilt To Clear Lake Gas Plant |
| Segment Name | Tx-219c |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 77584 |
| Onshore City Name | Pearland |
| Onshore County Name | Brazoria |
| Designated Location | Survey Station No. |
| Designated Name | 5073+41 |
| 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 | Intrastate |
| Item Involved | Valve |
| Valve Type | Mainline |
| Valve Mainline Type | Gate |
| Valve Manufacturer | Wkm |
| Installation Year | Unknown |
| Manufactured Year | Unknown |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Other |
| Leak Type Other | O-Ring Failure |
| Wildlife Impact Ind | No |
| Soil Contamination | No |
| Long Term Assessment | No |
| Remediation Ind | No |
| Water Contam Ind | No |
| Could Be Hca | No |
| Commodity Reached Hca | No |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 0 |
| Est Cost Prop Damage | 82000 |
| Est Cost Emergency | 0 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 82000 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Accident Psig | 70 |
| Mop Psig | 1440 |
| Mop Cfr Section | Component Design Pressure �195.406(A)(2) View CFR 49 §192 |
| Maop Established Date | 1993-12-04 00:00:00 |
| Maop Reversal Flow Ind | No |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Internal Inspection Ind | Yes |
| Operation Complications Ind | No |
| Pipeline Function | > 20% Smys Regulated Transmission |
| Scada In Place 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 pipeline was being controlled locally by technicians during commissioning activities and all devices were placed in local control. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Malfunction Of Control/relief Equipment |
| Eq Failure Type | Malfunction Of Control/relief Equipment |
| Block Valve Ind | Yes |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | O-Ring Failure |
| Preparer Name | U*** A****** |
| Preparer Title | Pipeline Compliance Engineer |
| Preparer Email | U********@e****.com |
| Preparer Telephone | 713-381-3818 |
| Prepared Date | 2025-06-19 00:00:00 |
| Local Contact Name | U*** A****** |
| Local Contact Email | U********@e****.com |
| Local Contact Telephone | 713-381-3818 |
| Authorizer Name | U*** A****** |
| Authorizer Telephone | 713-381-3818 |
| Authorizer Title | Pipeline Compliance Engineer |
| Authorizer Email | U********@e****.com |
| Narrative | On 05/05/2025, while leak checking the mainline valve at county road 99 during the commissioning of tx-219c bubbles were observed on the valve bonnet. Product release was estimated to be less than 5 gallons. The commissioning was shut down and the segment blocked in. On 05/08/2025 at 09:10 am, the cost to repair valve at cr 99 was estimated to exceed $50k and the leak was determined as nrc reportable. Nrc was notified at 09:18 am (nrc#1430534) and transportation compliance notified texas railroad commission at 10:10 am. Valve repair has been completed. |
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