Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2011-08-04 — TX
Operator
Tennessee Gas Pipeline Co (El Paso)
Cause
Corrosion Failure
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$266,775
Incident datetime
2011-08-04 12:30
Report number
Location
TX
Narrative
A US coast guard patrol observed a five feet diameter ring of bubbles in the water in the south marsh island (smi) area block 29 on the ocs. The uscg contaced boemre who in turn notified tennessee gas pipeline (tgp). Tgp dispatched company personnel and divers who identified a pinhole leak in tgp's 12" 523m-1300 pipeline. A clamp was installed and the pipeline was placed back into service.
Detailed record list
Report Received Date
2011-08-26 00:00:00
Iyear
2011
Report Number
20110313
Supplemental Number
15326
Report Type
Original Final
Operator Id
19160
Name
Tennessee Gas Pipeline Co (El Paso)
Operator Street Address
1001 Louisiana St
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Local Datetime
2011-08-04 11:00:00
Location Latitude
28.8115
Location Longitude
-92.14333
Nrc Rpt Num
984924
Nrc Rpt Datetime
2011-08-04 13:40:00
Commodity Released Type
Natural Gas
Unintentional Release
45
Intentional Release
900
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2011-08-04 14:00:00
Restart Datetime
2011-08-09 07:00:00
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Incident Identified Datetime
2011-08-04 12:30:00
On Site Datetime
2011-08-06 17:00:00
On Off Shore
Offshore
Off Water Depth
110
Off Accident Origin
On The Outer Continental Shelf (Ocs)
Off Ocs Area
South Marsh Island
Off Ocs Block
29
Off Area Accident Type
Below Water, Pipe Buried Or Jetted Below Seabed
Pipe Facility Type
Interstate
System Part Involved
Offshore Pipeline, Including Riser And Riser Bend
Item Involved
Pipe
Pipe Type
Pipe Body
Pipe Diameter
12.75
Pipe Wall Thickness
0.375
Pipe Smys
42000
Pipe Specification
Api 5l Or Equivalent
Pipe Seam Type
Other
Pipe Seam Details
Unknown
Pipe Manufacturer
U.s. Steel
Pipe Coating Type
Coal Tar
Installation Year
1974
Manufactured Year
1974
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Pinhole
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
311
Heat Damage Ind
No
Non Heat Damage Ind
No
Hca Fatalities Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
180
Est Cost Intentional Release
3600
Est Cost Prop Damage
266775
Est Cost Emergency
2500
Est Cost Other
0
Prpty
273055
Accident Psig
868
Mop Psig
1250
Mop Cfr Section
Not On Omb-Approved Form When Submitted
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
No
Upstream Valve Type Ind
Manual
Downstream Valve Type Ind
Manual
Length Segment Isolated
125928
Internal Inspection Ind
No
Other Restrictions Ind
Yes
Operation Complications Ind
Yes
Low Flow Ind
Yes
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
Operator Notified By Boemre Who Was Notified By Uscg Patrol Of Bubbles In Water
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
Pressure was not above normal operating limits.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Corrosion Failure
Cause Details
Internal Corrosion
Internal External
Internal Corrosion
Int Visual Exam Results
Not Cut Open
Int Other Corrosion Ind
Yes
Int Corrosion Type Details
Visually Inspected By Divers And Assumed To Be Internal Corrosion.
Int Field Exam Basis Ind
Yes
Int Low Point Pipe Loc Ind
Yes
Corrosion Inhibitors
Yes
Corrosion Lining
No
Cleaning Dewatering
No
Corrosion Coupons
No
Collected Data Ind
No
Has Hydrtst Conduc Before Ind
No
Direct Asmnt Conducted
No
Non Destructive Exam Ind
No
Preparer Name
K****** C P*****
Preparer Title
Manager - Dot Compliance Field Support
Preparer Email
K*********@e*****.com
Preparer Telephone
2053257554
Preparer Fax
2053253729
Authorizer Name
K****** C P*****
Authorizer Title
Manager - Dot Compliance Field Support
Authorizer Telephone
2053257554
Authorizer Email
K*********@e*****.com
Narrative
A US coast guard patrol observed a five feet diameter ring of bubbles in the water in the south marsh island (smi) area block 29 on the ocs. The uscg contaced boemre who in turn notified tennessee gas pipeline (tgp). Tgp dispatched company personnel and divers who identified a pinhole leak in tgp's 12" 523m-1300 pipeline. A clamp was installed and the pipeline was placed back into service.
| Report Received Date | 2011-08-26 00:00:00 |
|---|---|
| Iyear | 2011 |
| Report Number | 20110313 |
| Supplemental Number | 15326 |
| Report Type | Original Final |
| Operator Id | 19160 PHMSA Enforcement |
| Name | Tennessee Gas Pipeline Co (El Paso) |
| Operator Street Address | 1001 Louisiana St |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77002 |
| Local Datetime | 2011-08-04 11:00:00 |
| Location Latitude | 28.8115 Google Maps OpenStreetMap |
| Location Longitude | -92.14333 Google Maps OpenStreetMap |
| Nrc Rpt Num | 984924 NRC Report How to search |
| Nrc Rpt Datetime | 2011-08-04 13:40:00 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 45 |
| Intentional Release | 900 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2011-08-04 14:00:00 |
| Restart Datetime | 2011-08-09 07:00:00 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2011-08-04 12:30:00 |
| On Site Datetime | 2011-08-06 17:00:00 |
| On Off Shore | Offshore |
| Off Water Depth | 110 |
| Off Accident Origin | On The Outer Continental Shelf (Ocs) |
| Off Ocs Area | South Marsh Island |
| Off Ocs Block | 29 |
| Off Area Accident Type | Below Water, Pipe Buried Or Jetted Below Seabed |
| Pipe Facility Type | Interstate |
| System Part Involved | Offshore Pipeline, Including Riser And Riser Bend |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Pipe Diameter | 12.75 |
| Pipe Wall Thickness | 0.375 |
| Pipe Smys | 42000 |
| Pipe Specification | Api 5l Or Equivalent |
| Pipe Seam Type | Other |
| Pipe Seam Details | Unknown |
| Pipe Manufacturer | U.s. Steel |
| Pipe Coating Type | Coal Tar |
| Installation Year | 1974 |
| Manufactured Year | 1974 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Pinhole |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 311 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Hca Fatalities Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 180 |
| Est Cost Intentional Release | 3600 |
| Est Cost Prop Damage | 266775 |
| Est Cost Emergency | 2500 |
| Est Cost Other | 0 |
| Prpty | 273055 |
| Accident Psig | 868 |
| Mop Psig | 1250 |
| Mop Cfr Section | Not On Omb-Approved Form When Submitted 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 | 125928 |
| Internal Inspection Ind | No |
| Other Restrictions Ind | Yes |
| Operation Complications Ind | Yes |
| Low Flow Ind | Yes |
| 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 | Operator Notified By Boemre Who Was Notified By Uscg Patrol Of Bubbles In Water |
| 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 | Pressure was not above normal operating limits. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Corrosion Failure |
| Cause Details | Internal Corrosion |
| Internal External | Internal Corrosion |
| Int Visual Exam Results | Not Cut Open |
| Int Other Corrosion Ind | Yes |
| Int Corrosion Type Details | Visually Inspected By Divers And Assumed To Be Internal Corrosion. |
| Int Field Exam Basis Ind | Yes |
| Int Low Point Pipe Loc Ind | Yes |
| Corrosion Inhibitors | Yes |
| Corrosion Lining | No |
| Cleaning Dewatering | No |
| Corrosion Coupons | No |
| Collected Data Ind | No |
| Has Hydrtst Conduc Before Ind | No |
| Direct Asmnt Conducted | No |
| Non Destructive Exam Ind | No |
| Preparer Name | K****** C P***** |
| Preparer Title | Manager - Dot Compliance Field Support |
| Preparer Email | K*********@e*****.com |
| Preparer Telephone | 2053257554 |
| Preparer Fax | 2053253729 |
| Authorizer Name | K****** C P***** |
| Authorizer Title | Manager - Dot Compliance Field Support |
| Authorizer Telephone | 2053257554 |
| Authorizer Email | K*********@e*****.com |
| Narrative | A US coast guard patrol observed a five feet diameter ring of bubbles in the water in the south marsh island (smi) area block 29 on the ocs. The uscg contaced boemre who in turn notified tennessee gas pipeline (tgp). Tgp dispatched company personnel and divers who identified a pinhole leak in tgp's 12" 523m-1300 pipeline. A clamp was installed and the pipeline was placed back into service. |
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