Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2024-07-16 — TX
Operator
Bbt Sigco Intrastate, Llc
Cause
Corrosion Failure
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$389,000
Incident datetime
2024-07-16 00:00 UTC
Report number
Location
TX
Narrative
On 6/17/2024 bubbling was seen from a third-party helicopter pilot. The pilot reported the situation to bbt which they investigated and confirmed on 6/18/2024 to be the 16" bbt pipeline. Bbt initially treated it as a src due to the nature of the event (slow leak) and the vicinity (in the marsh, 1.5 miles from the nearest building), but was elevated to an incident within an hour when it was determined it was going to exceed the regulatory requirement in becoming an incident on 6/28/2024 (due to the mobilization cost and equipment needed in the marsh) . The leak was isolated immediately, and discussions were made to minimize fugitive emissions. As a result, customers burned down the gas to the regulator set point (200psi). The remaining gas was blown down to initiate repairs. Repairs started on 6/24/2024 (weld-on sleeve) and the pipeline was returned to service on 7/1/2024. Localized pitting was determined to be the cause in-between the concrete coatings near the seams where coal tar is the coating.
Detailed record list
Report Received Date
2024-07-16 00:00:00
Iyear
2024
Report Number
20240092
Supplemental Number
40198
Report Type
Supplemental Final
Operator Id
31424
Name
Bbt Sigco Intrastate, Llc
Operator Street Address
Black Bear Transmission, Llc 1501 Mckinney, Suite 800
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77010
Time Zone
Central
Daylight Savings Ind
Yes
Location Latitude
29.8680278
Location Longitude
-89.7434167
Nrc Rpt Num
1403238
Additional Nrc Report Numbers
1403477
Commodity Released Type
Natural Gas
Unintentional Release
1900
Intentional Release
2570
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
Yes
Communication State Fed Ind
No
Ignite Ind
No
Upstream Action Taken
Valve Closure
Downstream Action Taken
Valve Closure
Num Pub Evacuated
0
On Off Shore
Onshore
Onshore State Abbreviation
La
Onshore Postal Code
70043
Onshore City Name
Not Within A Municipality
Onshore County Name
St. Bernard Parish
Designated Location
Not Applicable
Pipe Fac Name
Bbt Sigco Intrastate, Llc - 31424
Segment Name
16" Pipeline
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Other
Incident Area Details
Marsh
Other Underground Facilities
No
Crossing
No
Pipe Facility Type
Intrastate
System Part Involved
Onshore Pipeline, Including Valve Sites
Item Involved
Pipe
Pipe Type
Pipe Body
Pipe Diameter
16
Puddle Weld Ind
No
Pipe Wall Thickness
0.25
Pipe Smys
42000
Pipe Specification
Api 5l X42
Pipe Seam Type
Longitudinal Erw - Unknown Frequency
Pipe Manufacturer
Unknown
Pipe Coating Type
Other
Pipe Coating Details
Coal Tar
Coating Applied Ind
Unknown
Installation Year
1958
Manufactured Year
1958
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Pinhole
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
340
Heat Damage Ind
No
Non Heat Damage Ind
No
Did Occur In Mca Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
746
Est Cost Intentional Release
1009
Est Cost Prop Damage
389000
Est Cost Emergency
0
Est Cost Other
0
Gas Cost In Mcf
0.3928
Prpty
390755
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
730
Gas Flow In Pipe In Mcf
15
Mop Psig
945
Mop Cfr Section
192.619(A)(2)
Maop Established Date
1958-01-01 00:00:00
Maop Reversal Flow Ind
No
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
No
Gas Required Odorized Ind
No
Upstream Valve Type Ind
Manual
Downstream Valve Type Ind
Manual
Length Segment Isolated
76612
Internal Inspection Ind
No
Unsuitable Mainline Ind
Yes
Operation Complications Ind
Yes
Other Complications Ind
Yes
Inspect Comp Details
Pig Traps Needed For An Ili Run
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
Notification From Public
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
This was elevated to be an incident only due to the cost of the repair. Initially treated as a src.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Corrosion Failure
Cause Details
External Corrosion
Internal External
External Corrosion
Visual Exam Results
Localized Pitting
Other Corrosion Ind
Yes
Corrosion Type Details
Corrosion Was In-Between The Concrete Coatings Near The Seam Where Coal Tar Is The Coating (Localized Pitting).
Field Exam Basis Ind
Yes
Underground Location
Yes
Under Cathodic Protection Ind
Yes
Shielding Evident
No
Cathodic Survey Type
Yes
Cp Annual Survey Ind
Yes
Cp Annual Survey Year
2023
Prior Damage
No
Collected Data Ind
No
Has Hydrtst Conduc Before Ind
No
Direct Asmnt Conducted
No
Non Destructive Exam Ind
No
Preparer Name
J**** K*********
Preparer Title
Director - Compliance Engineering And Operations
Preparer Email
J**********@c******.com
Preparer Telephone
8325817806
Local Contact Name
T*** S******
Local Contact Email
T*******@b***********.com
Local Contact Telephone
3183553439
Authorizer Name
W****** K*********
Authorizer Title
Director - Compliance Engineering And Operations
Authorizer Telephone
8325817806
Authorizer Email
J**********@c******.com
Narrative
On 6/17/2024 bubbling was seen from a third-party helicopter pilot. The pilot reported the situation to bbt which they investigated and confirmed on 6/18/2024 to be the 16" bbt pipeline. Bbt initially treated it as a src due to the nature of the event (slow leak) and the vicinity (in the marsh, 1.5 miles from the nearest building), but was elevated to an incident within an hour when it was determined it was going to exceed the regulatory requirement in becoming an incident on 6/28/2024 (due to the mobilization cost and equipment needed in the marsh) . The leak was isolated immediately, and discussions were made to minimize fugitive emissions. As a result, customers burned down the gas to the regulator set point (200psi). The remaining gas was blown down to initiate repairs. Repairs started on 6/24/2024 (weld-on sleeve) and the pipeline was returned to service on 7/1/2024. Localized pitting was determined to be the cause in-between the concrete coatings near the seams where coal tar is the coating.
| Report Received Date | 2024-07-16 00:00:00 |
|---|---|
| Iyear | 2024 |
| Report Number | 20240092 |
| Supplemental Number | 40198 |
| Report Type | Supplemental Final |
| Operator Id | 31424 PHMSA Enforcement |
| Name | Bbt Sigco Intrastate, Llc |
| Operator Street Address | Black Bear Transmission, Llc 1501 Mckinney, Suite 800 |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77010 |
| Time Zone | Central |
| Daylight Savings Ind | Yes |
| Location Latitude | 29.8680278 Google Maps OpenStreetMap |
| Location Longitude | -89.7434167 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1403238 NRC Report How to search |
| Additional Nrc Report Numbers | 1403477 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 1900 |
| Intentional Release | 2570 |
| 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 | Yes |
| Communication State Fed Ind | No |
| Ignite Ind | No |
| Upstream Action Taken | Valve Closure |
| Downstream Action Taken | Valve Closure |
| Num Pub Evacuated | 0 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | La |
| Onshore Postal Code | 70043 |
| Onshore City Name | Not Within A Municipality |
| Onshore County Name | St. Bernard Parish |
| Designated Location | Not Applicable |
| Pipe Fac Name | Bbt Sigco Intrastate, Llc - 31424 |
| Segment Name | 16" Pipeline |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Other |
| Incident Area Details | Marsh |
| Other Underground Facilities | No |
| Crossing | No |
| Pipe Facility Type | Intrastate |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Pipe Diameter | 16 |
| Puddle Weld Ind | No |
| Pipe Wall Thickness | 0.25 |
| Pipe Smys | 42000 |
| Pipe Specification | Api 5l X42 |
| Pipe Seam Type | Longitudinal Erw - Unknown Frequency |
| Pipe Manufacturer | Unknown |
| Pipe Coating Type | Other |
| Pipe Coating Details | Coal Tar |
| Coating Applied Ind | Unknown |
| Installation Year | 1958 |
| Manufactured Year | 1958 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Pinhole |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 340 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Did Occur In Mca Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 746 |
| Est Cost Intentional Release | 1009 |
| Est Cost Prop Damage | 389000 |
| Est Cost Emergency | 0 |
| Est Cost Other | 0 |
| Gas Cost In Mcf | 0.3928 |
| Prpty | 390755 |
| 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 | 730 |
| Gas Flow In Pipe In Mcf | 15 |
| Mop Psig | 945 |
| Mop Cfr Section | 192.619(A)(2) View CFR 49 §192 |
| Maop Established Date | 1958-01-01 00:00:00 |
| Maop Reversal Flow Ind | No |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Pressure Restriction Ind | No |
| Gas Required Odorized Ind | No |
| Upstream Valve Type Ind | Manual |
| Downstream Valve Type Ind | Manual |
| Length Segment Isolated | 76612 |
| Internal Inspection Ind | No |
| Unsuitable Mainline Ind | Yes |
| Operation Complications Ind | Yes |
| Other Complications Ind | Yes |
| Inspect Comp Details | Pig Traps Needed For An Ili Run |
| 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 | Notification From Public |
| 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 | This was elevated to be an incident only due to the cost of the repair. Initially treated as a src. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Corrosion Failure |
| Cause Details | External Corrosion |
| Internal External | External Corrosion |
| Visual Exam Results | Localized Pitting |
| Other Corrosion Ind | Yes |
| Corrosion Type Details | Corrosion Was In-Between The Concrete Coatings Near The Seam Where Coal Tar Is The Coating (Localized Pitting). |
| Field Exam Basis Ind | Yes |
| Underground Location | Yes |
| Under Cathodic Protection Ind | Yes |
| Shielding Evident | No |
| Cathodic Survey Type | Yes |
| Cp Annual Survey Ind | Yes |
| Cp Annual Survey Year | 2023 |
| Prior Damage | No |
| Collected Data Ind | No |
| Has Hydrtst Conduc Before Ind | No |
| Direct Asmnt Conducted | No |
| Non Destructive Exam Ind | No |
| Preparer Name | J**** K********* |
| Preparer Title | Director - Compliance Engineering And Operations |
| Preparer Email | J**********@c******.com |
| Preparer Telephone | 8325817806 |
| Local Contact Name | T*** S****** |
| Local Contact Email | T*******@b***********.com |
| Local Contact Telephone | 3183553439 |
| Authorizer Name | W****** K********* |
| Authorizer Title | Director - Compliance Engineering And Operations |
| Authorizer Telephone | 8325817806 |
| Authorizer Email | J**********@c******.com |
| Narrative | On 6/17/2024 bubbling was seen from a third-party helicopter pilot. The pilot reported the situation to bbt which they investigated and confirmed on 6/18/2024 to be the 16" bbt pipeline. Bbt initially treated it as a src due to the nature of the event (slow leak) and the vicinity (in the marsh, 1.5 miles from the nearest building), but was elevated to an incident within an hour when it was determined it was going to exceed the regulatory requirement in becoming an incident on 6/28/2024 (due to the mobilization cost and equipment needed in the marsh) . The leak was isolated immediately, and discussions were made to minimize fugitive emissions. As a result, customers burned down the gas to the regulator set point (200psi). The remaining gas was blown down to initiate repairs. Repairs started on 6/24/2024 (weld-on sleeve) and the pipeline was returned to service on 7/1/2024. Localized pitting was determined to be the cause in-between the concrete coatings near the seams where coal tar is the coating. |
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