Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2025-08-24 — TX
Operator
Acadian Gas Pipeline System
Cause
Equipment Failure
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$625,000
Incident datetime
2025-08-24 00:00 UTC
Report number
Location
TX
Narrative
On 7/25/2025 at 8:24 am cst, a third party noticed bubbles in a water area near the chico c pipeline row and contacted acadian gas pipeline (acadian). Acadian pipeline technician discovered lel from the bubbles in the row and proceeded to make notifications. It was determined that an existing pipeline clamp had a small leak around the seal area. A stopple by-pass was installed, and a section of mainline pipe was removed and replaced eliminating the clamp. Acadian determined the event to be reportable at 8:45 am on 7/28/2025 due to the anticipated repair cost exceeding $149,700 resulting in immediate notification to nrc at 9:31 am. The ldenr was notified on 7/25/2025 at 9:24 am. The leak investigation determined seal failure on the pipeline clamp. Section e question 6 requires a whole number to input to complete the report. There was not a number of feet isolated for this event and should be zero entered in this cell.
Detailed record list
Report Received Date
2025-08-24 00:00:00
Iyear
2025
Report Number
20250095
Supplemental Number
41296
Report Type
Original Final
Operator Id
Name
Acadian Gas Pipeline System
Operator Street Address
1100 Louisiana St.
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Time Zone
Central
Daylight Savings Ind
Yes
Location Latitude
29.967445
Location Longitude
-90.853005
Nrc Rpt Num
1438160
Additional Nrc Report Numbers
1438313
Commodity Released Type
Natural Gas
Unintentional Release
2
Intentional Release
0
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Status When Identified
Normal Operation, Includes Pauses During Maintenance
Shutdown Due Accident Ind
No
Shutdown Explain
A Double Stopple Bypass And Pipeline Was Constructed To Allow Flow To Continue.
Communication State Fed Ind
Yes
Party Initiated Communication
Operator
Ignite Ind
No
Upstream Action Taken
Operational Control
Upstream Oprtnl Cntrl Detail
Monitor Pipeline Flow And Pressure At The Control Center And Personnel On Site.
Downstream Action Taken
Operational Control
Downstream Oprtnl Cntrl Detail
Monitor Pipeline Flow And Pressure At The Control Center And Personnel On Site.
Num Pub Evacuated
0
On Off Shore
Onshore
Onshore State Abbreviation
La
Onshore Postal Code
70086
Onshore City Name
St. James
Onshore County Name
St. James
Designated Location
Survey Station No.
Designated Name
960+00
Pipe Fac Name
Chico C 20"
Segment Name
307-0100
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
120
Other Underground Facilities
No
Crossing
No
Pipe Facility Type
Intrastate
System Part Involved
Onshore Pipeline, Including Valve Sites
Item Involved
Repair Sleeve Or Clamp
Installation Year
Unknown
Manufactured Year
Unknown
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Seal Or Packing
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
418
Heat Damage Ind
No
Non Heat Damage Ind
No
Did Occur In Mca Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
7
Est Cost Intentional Release
0
Est Cost Prop Damage
625000
Est Cost Emergency
0
Est Cost Other
0
Gas Cost In Mcf
3.25
Prpty
625007
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Wildlife Impact Ind
No
Accident Psig
892
Gas Flow In Pipe In Mcf
268000
Mop Psig
918
Mop Cfr Section
192.619(A)(1)
Maop Established Date
2004-12-08 00:00:00
Maop Reversal Flow Ind
No
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
No
Gas Required Odorized Ind
No
Length Segment Isolated
1
Internal Inspection Ind
Yes
Operation Complications Ind
No
Pipeline Function
Transmission System
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
No
Scada Conf Ind
No
Accident Identifier
Other
Accident Details
Notified By Another Pipeline Operator Near Row.
Investigation Status
Yes, specify investigation result(s): (select all that apply)
Invest No Control Room Ind
Yes
Invest No Controller Ind
Yes
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Non-Threaded Connection Failure
Eq Failure Type
Non-Threaded Connection Failure
Other Non Threaded Ind
Seal (Not Compressor Seal) Or Packing
Eq Additional Other Ind
Yes
Eq Additional Other Details
Breakdown Due To Soft Goods Age.
Preparer Name
N***** G***
Preparer Title
Lead Pipeline Compliance Specialist
Preparer Email
N****@e****.com
Preparer Telephone
985-493-4629
Local Contact Name
N***** G***
Local Contact Email
N****@e****.com
Local Contact Telephone
985-493-4629
Authorizer Name
B**** B****
Authorizer Title
Transportation Compliance Manager
Authorizer Telephone
713-381-2493
Authorizer Email
B******@e****.com
Narrative
On 7/25/2025 at 8:24 am cst, a third party noticed bubbles in a water area near the chico c pipeline row and contacted acadian gas pipeline (acadian). Acadian pipeline technician discovered lel from the bubbles in the row and proceeded to make notifications. It was determined that an existing pipeline clamp had a small leak around the seal area. A stopple by-pass was installed, and a section of mainline pipe was removed and replaced eliminating the clamp. Acadian determined the event to be reportable at 8:45 am on 7/28/2025 due to the anticipated repair cost exceeding $149,700 resulting in immediate notification to nrc at 9:31 am. The ldenr was notified on 7/25/2025 at 9:24 am. The leak investigation determined seal failure on the pipeline clamp. Section e question 6 requires a whole number to input to complete the report. There was not a number of feet isolated for this event and should be zero entered in this cell.
| Report Received Date | 2025-08-24 00:00:00 |
|---|---|
| Iyear | 2025 |
| Report Number | 20250095 |
| Supplemental Number | 41296 |
| Report Type | Original Final |
| Operator Id | 3 PHMSA Enforcement |
| Name | Acadian Gas Pipeline System |
| Operator Street Address | 1100 Louisiana St. |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77002 |
| Time Zone | Central |
| Daylight Savings Ind | Yes |
| Location Latitude | 29.967445 Google Maps OpenStreetMap |
| Location Longitude | -90.853005 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1438160 NRC Report How to search |
| Additional Nrc Report Numbers | 1438313 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 2 |
| Intentional Release | 0 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Status When Identified | Normal Operation, Includes Pauses During Maintenance |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | A Double Stopple Bypass And Pipeline Was Constructed To Allow Flow To Continue. |
| Communication State Fed Ind | Yes |
| Party Initiated Communication | Operator |
| Ignite Ind | No |
| Upstream Action Taken | Operational Control |
| Upstream Oprtnl Cntrl Detail | Monitor Pipeline Flow And Pressure At The Control Center And Personnel On Site. |
| Downstream Action Taken | Operational Control |
| Downstream Oprtnl Cntrl Detail | Monitor Pipeline Flow And Pressure At The Control Center And Personnel On Site. |
| Num Pub Evacuated | 0 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | La |
| Onshore Postal Code | 70086 |
| Onshore City Name | St. James |
| Onshore County Name | St. James |
| Designated Location | Survey Station No. |
| Designated Name | 960+00 |
| Pipe Fac Name | Chico C 20" |
| Segment Name | 307-0100 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 120 |
| Other Underground Facilities | No |
| Crossing | No |
| Pipe Facility Type | Intrastate |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| Item Involved | Repair Sleeve Or Clamp |
| Installation Year | Unknown |
| Manufactured Year | Unknown |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Seal Or Packing |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 418 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Did Occur In Mca Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 7 |
| Est Cost Intentional Release | 0 |
| Est Cost Prop Damage | 625000 |
| Est Cost Emergency | 0 |
| Est Cost Other | 0 |
| Gas Cost In Mcf | 3.25 |
| Prpty | 625007 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Wildlife Impact Ind | No |
| Accident Psig | 892 |
| Gas Flow In Pipe In Mcf | 268000 |
| Mop Psig | 918 |
| Mop Cfr Section | 192.619(A)(1) View CFR 49 §192 |
| Maop Established Date | 2004-12-08 00:00:00 |
| Maop Reversal Flow Ind | No |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Pressure Restriction Ind | No |
| Gas Required Odorized Ind | No |
| Length Segment Isolated | 1 |
| Internal Inspection Ind | Yes |
| Operation Complications Ind | No |
| Pipeline Function | Transmission System |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | No |
| Scada Conf Ind | No |
| Accident Identifier | Other |
| Accident Details | Notified By Another Pipeline Operator Near Row. |
| Investigation Status | Yes, specify investigation result(s): (select all that apply) |
| Invest No Control Room Ind | Yes |
| Invest No Controller Ind | Yes |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Non-Threaded Connection Failure |
| Eq Failure Type | Non-Threaded Connection Failure |
| Other Non Threaded Ind | Seal (Not Compressor Seal) Or Packing |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | Breakdown Due To Soft Goods Age. |
| Preparer Name | N***** G*** |
| Preparer Title | Lead Pipeline Compliance Specialist |
| Preparer Email | N****@e****.com |
| Preparer Telephone | 985-493-4629 |
| Local Contact Name | N***** G*** |
| Local Contact Email | N****@e****.com |
| Local Contact Telephone | 985-493-4629 |
| Authorizer Name | B**** B**** |
| Authorizer Title | Transportation Compliance Manager |
| Authorizer Telephone | 713-381-2493 |
| Authorizer Email | B******@e****.com |
| Narrative | On 7/25/2025 at 8:24 am cst, a third party noticed bubbles in a water area near the chico c pipeline row and contacted acadian gas pipeline (acadian). Acadian pipeline technician discovered lel from the bubbles in the row and proceeded to make notifications. It was determined that an existing pipeline clamp had a small leak around the seal area. A stopple by-pass was installed, and a section of mainline pipe was removed and replaced eliminating the clamp. Acadian determined the event to be reportable at 8:45 am on 7/28/2025 due to the anticipated repair cost exceeding $149,700 resulting in immediate notification to nrc at 9:31 am. The ldenr was notified on 7/25/2025 at 9:24 am. The leak investigation determined seal failure on the pipeline clamp. Section e question 6 requires a whole number to input to complete the report. There was not a number of feet isolated for this event and should be zero entered in this cell. |
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