Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2014-11-17 — TX
Operator
Columbia Gulf Transmission, Llc
Cause
Other Outside Force Damage
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$793,505
Incident datetime
2014-11-17 07:45
Report number
Location
TX
Narrative
On november 16, 2014, a tug boat traveling along the intracoastal canal in bourg, la spotted bubbles. The crew of this boat contacted the coast guard, who in turn contacted columbia gulf transmission, llc (columbia) to investigate if the subject bubbles were emanating from a near-by line that runs in this area. Columbia operations personnel were dispatched to investigate this reported leak. After closing the two mainline valves that are within the upstream and downstream segment of the line, bubbles kept surfacing. Samples of the released material were collected and sent to the laboratory for analysis. The line pressure was restricted to about 125 psig to ensure that the released bubbles were identifiable for repairs, if the line turns out to be columbia's. Thereafter, the area was made safe where pipeline operations personnel manned the two mainline valves overnight, monitoring line pressure via digital pressure gauges. The following day (november 17, 2014), the line releasing bubbles was declared as columbia owned, operated and maintained line. Then a report to the nrc was made on that morning due to the expected repair costs that will exceed $50,000. The unintended release of material did not exceed 3,000 mcf. No evidence of sheen was noted throughout the entire release for material on the surface of the waterway. After the cause analysis was conducted, it was determined the pipeline had been damaged by an anchor being dropped and dragged across the pipeline. The third party damage consisted of two dents and one gouge area. The gouge area had a pinhole leak. The damage to the pipeline has been repaired but has not been returned to service since the date of the incident.
Detailed record list
Report Received Date
2014-12-15 00:00:00
Iyear
2014
Report Number
20140137
Supplemental Number
17594
Report Type
Supplemental Final
Operator Id
2620
Name
Columbia Gulf Transmission, Llc
Operator Street Address
700 Louisiana St. Suite 700
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Local Datetime
2014-11-17 08:45:00
Location Latitude
29.56281
Location Longitude
-90.55513
Nrc Rpt Num
1101230
Nrc Rpt Datetime
2014-11-17 09:42:00
Commodity Released Type
Natural Gas
Unintentional Release
153
Intentional Release
246
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Shutdown Due Accident Ind
No
Shutdown Explain
Line Pressure Was Reduced Down To 125 Psig To Monitor Bubbles
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Incident Identified Datetime
2014-11-17 07:45:00
On Site Datetime
2014-11-17 08:00:00
On Off Shore
Onshore
Onshore State Abbreviation
La
Onshore Postal Code
70343
Onshore City Name
Bourg
Onshore County Name
Lafrouche Parrish
Designated Location
Survey Station No.
Designated Name
El-100-013
Pipe Fac Name
Pipeline
Segment Name
El-100
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Other
Incident Area Details
In A Navigable Waterway
Depth Of Cover
48
Crossing
No
Pipe Facility Type
Interstate
System Part Involved
Onshore Pipeline, Including Valve Sites
Item Involved
Pipe
Pipe Type
Pipe Body
Pipe Diameter
12
Pipe Wall Thickness
0.245
Pipe Smys
35000
Pipe Specification
Api-5l
Pipe Seam Type
Longitudinal Erw - Unknown Frequency
Pipe Manufacturer
National Tube
Pipe Coating Type
Coal Tar
Installation Year
1954
Manufactured Year
1954
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Pinhole
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
275
Heat Damage Ind
No
Non Heat Damage Ind
No
Hca Fatalities Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
560
Est Cost Intentional Release
900
Est Cost Prop Damage
793505
Est Cost Emergency
0
Est Cost Other
0
Prpty
794965
Accident Psig
812
Mop Psig
1110
Mop Cfr Section
192.619(A)(2)
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
No
Upstream Valve Type Ind
Manual
Downstream Valve Type Ind
Manual
Length Segment Isolated
5700
Internal Inspection Ind
No
Unsuitable Mainline 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
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
The leak was from a pinhole that was identified by a boat passing by that area
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Other Outside Force Damage
Cause Details
Damage By Boats, Barges, Drilling Rigs, Or Other Maritime Equipment Or Vessels Set Adrift Or Which Have Otherwise Lost Their Mooring
Outside Force Type
Damage By Boats, Barges, Drilling Rigs, Or Other Maritime Equipment Or Vessels Set Adrift Or Which Have Otherwise Lost Their Mooring
Osf Other Weather Ind
Yes
Osf Other Weather Details
It Was Determined The Pipeline Had Been Damaged By An Anchor Being Dropped And Dragged Across The Pipeline. The Third Party Damage Consisted Of Two Dents And One Gouge Area. The Gouge Area Had A Pinhole Leak.
Preparer Name
C*** B*****
Preparer Title
Compliance Specialist
Preparer Email
C**********@t**********.com
Preparer Telephone
(304)357-2814
Authorizer Name
L** R*****
Authorizer Title
Manager Us Regulatory Compliance
Authorizer Telephone
(832)320-5315
Authorizer Email
L*********@t**********.com
Narrative
On november 16, 2014, a tug boat traveling along the intracoastal canal in bourg, la spotted bubbles. The crew of this boat contacted the coast guard, who in turn contacted columbia gulf transmission, llc (columbia) to investigate if the subject bubbles were emanating from a near-by line that runs in this area. Columbia operations personnel were dispatched to investigate this reported leak. After closing the two mainline valves that are within the upstream and downstream segment of the line, bubbles kept surfacing. Samples of the released material were collected and sent to the laboratory for analysis. The line pressure was restricted to about 125 psig to ensure that the released bubbles were identifiable for repairs, if the line turns out to be columbia's. Thereafter, the area was made safe where pipeline operations personnel manned the two mainline valves overnight, monitoring line pressure via digital pressure gauges. The following day (november 17, 2014), the line releasing bubbles was declared as columbia owned, operated and maintained line. Then a report to the nrc was made on that morning due to the expected repair costs that will exceed $50,000. The unintended release of material did not exceed 3,000 mcf. No evidence of sheen was noted throughout the entire release for material on the surface of the waterway. After the cause analysis was conducted, it was determined the pipeline had been damaged by an anchor being dropped and dragged across the pipeline. The third party damage consisted of two dents and one gouge area. The gouge area had a pinhole leak. The damage to the pipeline has been repaired but has not been returned to service since the date of the incident.
| Report Received Date | 2014-12-15 00:00:00 |
|---|---|
| Iyear | 2014 |
| Report Number | 20140137 |
| Supplemental Number | 17594 |
| Report Type | Supplemental Final |
| Operator Id | 2620 PHMSA Enforcement |
| Name | Columbia Gulf Transmission, Llc |
| Operator Street Address | 700 Louisiana St. Suite 700 |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77002 |
| Local Datetime | 2014-11-17 08:45:00 |
| Location Latitude | 29.56281 Google Maps OpenStreetMap |
| Location Longitude | -90.55513 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1101230 NRC Report How to search |
| Nrc Rpt Datetime | 2014-11-17 09:42:00 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 153 |
| Intentional Release | 246 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | Line Pressure Was Reduced Down To 125 Psig To Monitor Bubbles |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2014-11-17 07:45:00 |
| On Site Datetime | 2014-11-17 08:00:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | La |
| Onshore Postal Code | 70343 |
| Onshore City Name | Bourg |
| Onshore County Name | Lafrouche Parrish |
| Designated Location | Survey Station No. |
| Designated Name | El-100-013 |
| Pipe Fac Name | Pipeline |
| Segment Name | El-100 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Other |
| Incident Area Details | In A Navigable Waterway |
| Depth Of Cover | 48 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Pipe Diameter | 12 |
| Pipe Wall Thickness | 0.245 |
| Pipe Smys | 35000 |
| Pipe Specification | Api-5l |
| Pipe Seam Type | Longitudinal Erw - Unknown Frequency |
| Pipe Manufacturer | National Tube |
| Pipe Coating Type | Coal Tar |
| Installation Year | 1954 |
| Manufactured Year | 1954 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Pinhole |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 275 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Hca Fatalities Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 560 |
| Est Cost Intentional Release | 900 |
| Est Cost Prop Damage | 793505 |
| Est Cost Emergency | 0 |
| Est Cost Other | 0 |
| Prpty | 794965 |
| Accident Psig | 812 |
| Mop Psig | 1110 |
| Mop Cfr Section | 192.619(A)(2) View CFR 49 §192 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Pressure Restriction Ind | No |
| Upstream Valve Type Ind | Manual |
| Downstream Valve Type Ind | Manual |
| Length Segment Isolated | 5700 |
| Internal Inspection Ind | No |
| Unsuitable Mainline 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 | 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 | The leak was from a pinhole that was identified by a boat passing by that area |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Other Outside Force Damage |
| Cause Details | Damage By Boats, Barges, Drilling Rigs, Or Other Maritime Equipment Or Vessels Set Adrift Or Which Have Otherwise Lost Their Mooring |
| Outside Force Type | Damage By Boats, Barges, Drilling Rigs, Or Other Maritime Equipment Or Vessels Set Adrift Or Which Have Otherwise Lost Their Mooring |
| Osf Other Weather Ind | Yes |
| Osf Other Weather Details | It Was Determined The Pipeline Had Been Damaged By An Anchor Being Dropped And Dragged Across The Pipeline. The Third Party Damage Consisted Of Two Dents And One Gouge Area. The Gouge Area Had A Pinhole Leak. |
| Preparer Name | C*** B***** |
| Preparer Title | Compliance Specialist |
| Preparer Email | C**********@t**********.com |
| Preparer Telephone | (304)357-2814 |
| Authorizer Name | L** R***** |
| Authorizer Title | Manager Us Regulatory Compliance |
| Authorizer Telephone | (832)320-5315 |
| Authorizer Email | L*********@t**********.com |
| Narrative | On november 16, 2014, a tug boat traveling along the intracoastal canal in bourg, la spotted bubbles. The crew of this boat contacted the coast guard, who in turn contacted columbia gulf transmission, llc (columbia) to investigate if the subject bubbles were emanating from a near-by line that runs in this area. Columbia operations personnel were dispatched to investigate this reported leak. After closing the two mainline valves that are within the upstream and downstream segment of the line, bubbles kept surfacing. Samples of the released material were collected and sent to the laboratory for analysis. The line pressure was restricted to about 125 psig to ensure that the released bubbles were identifiable for repairs, if the line turns out to be columbia's. Thereafter, the area was made safe where pipeline operations personnel manned the two mainline valves overnight, monitoring line pressure via digital pressure gauges. The following day (november 17, 2014), the line releasing bubbles was declared as columbia owned, operated and maintained line. Then a report to the nrc was made on that morning due to the expected repair costs that will exceed $50,000. The unintended release of material did not exceed 3,000 mcf. No evidence of sheen was noted throughout the entire release for material on the surface of the waterway. After the cause analysis was conducted, it was determined the pipeline had been damaged by an anchor being dropped and dragged across the pipeline. The third party damage consisted of two dents and one gouge area. The gouge area had a pinhole leak. The damage to the pipeline has been repaired but has not been returned to service since the date of the incident. |
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