Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2011-08-22 — 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)
$759,503
Incident datetime
2011-08-22 11:15
Report number
Location
TX
Narrative
A local landowner in the louisiana coastal marsh area reported seeing a small sheen of liquid in the vicinity of tennesee gas pipeline's (tgp) 26" 523m-100 line. Tgp personnel investigated and dispatched divers who confirmed a pinhole leak in the body of the pipe. Tgp also mobilized a liquid clean-up contractor to address the small liquid accumulation. A clamp was installed over the pinhole in the pipe and the line will remain shut in for abandonment. Subsequent to this august 22, 2011 report, several other leaks occurred that only involved small sheens and did not involve any associated gas release. The pipeline had been taken out of service and was awaiting abandonment. These are noted here pursuant to approval to do so from mr. Gene roberson, PHMSA sw region: 11/7/2011 nrc no. 994780; 12/6/2011 nrc no. 997331; 3/23/2012 nrc no. 1006704.
Detailed record list
Report Received Date
2011-09-19 00:00:00
Iyear
2011
Report Number
20110350
Supplemental Number
15586
Report Type
Supplemental 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
2011-08-22 09:25:00
Location Latitude
29.17137
Location Longitude
-90.721674
Nrc Rpt Num
986765
Nrc Rpt Datetime
2011-08-22 11:53:00
Commodity Released Type
Natural Gas
Unintentional Release
4
Intentional Release
4500
Accompanying Liquid
0.5
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Shutdown Due Accident Ind
No
Shutdown Explain
Was Previously Shut In For Planned Abandonment.
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Incident Identified Datetime
2011-08-22 11:15:00
On Site Datetime
2011-08-22 15:30:00
On Off Shore
Offshore
Off Water Depth
4
Off Accident Origin
In State Waters
Offshore State Abbreviation
La
Off Instate Area
Oak Bayou
Offshore County Name
Terrebonne
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
26
Pipe Wall Thickness
0.417
Pipe Smys
52000
Pipe Specification
Api 5l Or Equivalent
Pipe Seam Type
Dsaw
Pipe Manufacturer
Us Steel
Pipe Coating Type
Other
Pipe Coating Details
Coal Tar With Concrete Coating
Installation Year
1968
Manufactured Year
1968
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Pinhole
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
621
Heat Damage Ind
No
Non Heat Damage Ind
No
Hca Fatalities Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
16
Est Cost Intentional Release
18000
Est Cost Prop Damage
759503
Est Cost Emergency
350000
Est Cost Other
0
Prpty
1127519
Accident Psig
100
Mop Psig
1200
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
163680
Internal Inspection Ind
No
Other Inspection Ind
Yes
Internal Inspection Details
Hurricane Katrina Destroyed Platform Launcher. Pipeline Is Planned For Abandonment Anyway.
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
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
Pipeline was isolated due to planned abandonment and pressure was only at 100 psig, far below maop.
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
Not Evaluated Due To Planned Abandonment.
Int Other Basis Ind
Yes
Int Corrosion Basis Details
This Line Had A History Of Internal Corrosion But This Particular Anomaly Was Not Evalutated Due To The Planned Abandonment Of The Line.
Int Low Point Pipe Loc Ind
Yes
Corrosion Inhibitors
No
Corrosion Lining
Yes
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 local landowner in the louisiana coastal marsh area reported seeing a small sheen of liquid in the vicinity of tennesee gas pipeline's (tgp) 26" 523m-100 line. Tgp personnel investigated and dispatched divers who confirmed a pinhole leak in the body of the pipe. Tgp also mobilized a liquid clean-up contractor to address the small liquid accumulation. A clamp was installed over the pinhole in the pipe and the line will remain shut in for abandonment. Subsequent to this august 22, 2011 report, several other leaks occurred that only involved small sheens and did not involve any associated gas release. The pipeline had been taken out of service and was awaiting abandonment. These are noted here pursuant to approval to do so from mr. Gene roberson, PHMSA sw region: 11/7/2011 nrc no. 994780; 12/6/2011 nrc no. 997331; 3/23/2012 nrc no. 1006704.
| Report Received Date | 2011-09-19 00:00:00 |
|---|---|
| Iyear | 2011 |
| Report Number | 20110350 |
| Supplemental Number | 15586 |
| Report Type | Supplemental 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 | 2011-08-22 09:25:00 |
| Location Latitude | 29.17137 Google Maps OpenStreetMap |
| Location Longitude | -90.721674 Google Maps OpenStreetMap |
| Nrc Rpt Num | 986765 NRC Report How to search |
| Nrc Rpt Datetime | 2011-08-22 11:53:00 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 4 |
| Intentional Release | 4500 |
| Accompanying Liquid | 0.5 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | Was Previously Shut In For Planned Abandonment. |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2011-08-22 11:15:00 |
| On Site Datetime | 2011-08-22 15:30:00 |
| On Off Shore | Offshore |
| Off Water Depth | 4 |
| Off Accident Origin | In State Waters |
| Offshore State Abbreviation | La |
| Off Instate Area | Oak Bayou |
| Offshore County Name | Terrebonne |
| 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 | 26 |
| Pipe Wall Thickness | 0.417 |
| Pipe Smys | 52000 |
| Pipe Specification | Api 5l Or Equivalent |
| Pipe Seam Type | Dsaw |
| Pipe Manufacturer | Us Steel |
| Pipe Coating Type | Other |
| Pipe Coating Details | Coal Tar With Concrete Coating |
| Installation Year | 1968 |
| Manufactured Year | 1968 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Pinhole |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 621 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Hca Fatalities Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 16 |
| Est Cost Intentional Release | 18000 |
| Est Cost Prop Damage | 759503 |
| Est Cost Emergency | 350000 |
| Est Cost Other | 0 |
| Prpty | 1127519 |
| Accident Psig | 100 |
| Mop Psig | 1200 |
| 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 | 163680 |
| Internal Inspection Ind | No |
| Other Inspection Ind | Yes |
| Internal Inspection Details | Hurricane Katrina Destroyed Platform Launcher. Pipeline Is Planned For Abandonment Anyway. |
| 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 | 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 | Pipeline was isolated due to planned abandonment and pressure was only at 100 psig, far below maop. |
| 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 | Not Evaluated Due To Planned Abandonment. |
| Int Other Basis Ind | Yes |
| Int Corrosion Basis Details | This Line Had A History Of Internal Corrosion But This Particular Anomaly Was Not Evalutated Due To The Planned Abandonment Of The Line. |
| Int Low Point Pipe Loc Ind | Yes |
| Corrosion Inhibitors | No |
| Corrosion Lining | Yes |
| 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 local landowner in the louisiana coastal marsh area reported seeing a small sheen of liquid in the vicinity of tennesee gas pipeline's (tgp) 26" 523m-100 line. Tgp personnel investigated and dispatched divers who confirmed a pinhole leak in the body of the pipe. Tgp also mobilized a liquid clean-up contractor to address the small liquid accumulation. A clamp was installed over the pinhole in the pipe and the line will remain shut in for abandonment. Subsequent to this august 22, 2011 report, several other leaks occurred that only involved small sheens and did not involve any associated gas release. The pipeline had been taken out of service and was awaiting abandonment. These are noted here pursuant to approval to do so from mr. Gene roberson, PHMSA sw region: 11/7/2011 nrc no. 994780; 12/6/2011 nrc no. 997331; 3/23/2012 nrc no. 1006704. |
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