Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2015-09-17 — TX
Operator
Enable Gas Transmission, Llc
Cause
Miscellaneous Root Causes
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$350,000
Incident datetime
2015-09-17 11:15
Report number
Location
TX
Narrative
On 9/16/15 at 17:33 an enable employee with the el dorado district reports a possible leak was found during a local distribution company leak survey of their pipeline. The enable employee reported the possible leak to system control. Enable's kt-1, the distribution company and 2 foreign pipelines are near the possible leak. The enable employee could not confirm which of the 4 pipelines in the area is leaking. Leak indications were small. On 9/17/15 11:15 enable employees confirmed kt-1 is leaking to system control. At 15:22 local employees calculated and provided system control a cost estimate for repairs of $300,000. On 9/17/15 16:10 system control notified the nrc (report # 1128754) after deciding and determining they would replace the crossing. On 9/19/2015 performed a line stop to eliminate the leaking valve and pipe crossing. The crossing pipe was left in place and a new section of pipe was installed adjacent to the existing pipeline crossing.
Detailed record list
Report Received Date
2015-10-15 00:00:00
Iyear
2015
Report Number
20150124
Supplemental Number
16923
Report Type
Supplemental Final
Operator Id
Name
Enable Gas Transmission, Llc
Operator Street Address
1300 Main Street
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Local Datetime
2015-09-17 15:22:00
Location Latitude
33.15774
Location Longitude
-92.728778
Nrc Rpt Num
1128754
Nrc Rpt Datetime
2015-09-17 16:10:00
Commodity Released Type
Natural Gas
Unintentional Release
0.5
Intentional Release
50
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Shutdown Due Accident Ind
No
Shutdown Explain
No, Installed Stoppals
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Incident Identified Datetime
2015-09-17 11:15:00
On Site Datetime
2015-09-16 17:13:00
On Off Shore
Onshore
Onshore State Abbreviation
Ar
Onshore Postal Code
71731
Onshore City Name
Not Within A Municipality
Onshore County Name
Union
Designated Location
Survey Station No.
Designated Name
389+10
Pipe Fac Name
Line Kt-1
Segment Name
Route 7 Series 1330
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
12
Crossing
No
Pipe Facility Type
Interstate
System Part Involved
Onshore Pipeline, Including Valve Sites
Item Involved
Valve
Valve Type
Auxiliary Or Other Valve
Installation Year
1953
Material Involved
Material Other Than Carbon Steel Or Plastic
Material Details
Brass
Release Type
Leak
Leak Type
Other
Leak Type Other
Threads And Stem Leaking
Class Location Type
Class 3 Location
Could Be Hca
No
Pir Radius
141
Heat Damage Ind
No
Non Heat Damage Ind
No
Hca Fatalities Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
2
Est Cost Intentional Release
150
Est Cost Prop Damage
350000
Est Cost Emergency
1000
Est Cost Other
0
Prpty
351152
Accident Psig
315
Mop Psig
420
Mop Cfr Section
192.619(A)(1)
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
No
Upstream Valve Type Ind
Manual
Downstream Valve Type Ind
Manual
Length Segment Isolated
81
Internal Inspection Ind
No
Unsuitable Mainline Ind
Yes
Other Restrictions 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
Local Distribution Company
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
Small leak that would not have registered on scada system.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Excavation Damage
Cause Details
Previous Damage Due To Excavation Activity
Ex Party Type
Previous Damage Due To Excavation Activity
Notify Cga Dirt
Yes
Public Row Ind
Yes
Public Subtype
County Road
Excavator Type
Unknown/other
Excavator Equipment
Unknown/other
Work Performed
Unknown/other
One Call Notified Ind
No
Root Cause Category
Miscellaneous Root Causes
Root Cause Type
Previous Damage
Preparer Name
J**** C****
Preparer Title
Dot Compliance Manager
Preparer Email
J**********@e**************.com
Preparer Telephone
3184293664
Authorizer Name
J***** C*****
Authorizer Title
Senior Manager Dot Compliance
Authorizer Telephone
3184293606
Authorizer Email
J************@e**************.com
Narrative
On 9/16/15 at 17:33 an enable employee with the el dorado district reports a possible leak was found during a local distribution company leak survey of their pipeline. The enable employee reported the possible leak to system control. Enable's kt-1, the distribution company and 2 foreign pipelines are near the possible leak. The enable employee could not confirm which of the 4 pipelines in the area is leaking. Leak indications were small. On 9/17/15 11:15 enable employees confirmed kt-1 is leaking to system control. At 15:22 local employees calculated and provided system control a cost estimate for repairs of $300,000. On 9/17/15 16:10 system control notified the nrc (report # 1128754) after deciding and determining they would replace the crossing. On 9/19/2015 performed a line stop to eliminate the leaking valve and pipe crossing. The crossing pipe was left in place and a new section of pipe was installed adjacent to the existing pipeline crossing.
| Report Received Date | 2015-10-15 00:00:00 |
|---|---|
| Iyear | 2015 |
| Report Number | 20150124 |
| Supplemental Number | 16923 |
| Report Type | Supplemental Final |
| Operator Id | 602 PHMSA Enforcement |
| Name | Enable Gas Transmission, Llc |
| Operator Street Address | 1300 Main Street |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77002 |
| Local Datetime | 2015-09-17 15:22:00 |
| Location Latitude | 33.15774 Google Maps OpenStreetMap |
| Location Longitude | -92.728778 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1128754 NRC Report How to search |
| Nrc Rpt Datetime | 2015-09-17 16:10:00 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 0.5 |
| Intentional Release | 50 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | No, Installed Stoppals |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2015-09-17 11:15:00 |
| On Site Datetime | 2015-09-16 17:13:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Ar |
| Onshore Postal Code | 71731 |
| Onshore City Name | Not Within A Municipality |
| Onshore County Name | Union |
| Designated Location | Survey Station No. |
| Designated Name | 389+10 |
| Pipe Fac Name | Line Kt-1 |
| Segment Name | Route 7 Series 1330 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 12 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| Item Involved | Valve |
| Valve Type | Auxiliary Or Other Valve |
| Installation Year | 1953 |
| Material Involved | Material Other Than Carbon Steel Or Plastic |
| Material Details | Brass |
| Release Type | Leak |
| Leak Type | Other |
| Leak Type Other | Threads And Stem Leaking |
| Class Location Type | Class 3 Location |
| Could Be Hca | No |
| Pir Radius | 141 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Hca Fatalities Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 2 |
| Est Cost Intentional Release | 150 |
| Est Cost Prop Damage | 350000 |
| Est Cost Emergency | 1000 |
| Est Cost Other | 0 |
| Prpty | 351152 |
| Accident Psig | 315 |
| Mop Psig | 420 |
| Mop Cfr Section | 192.619(A)(1) 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 | 81 |
| Internal Inspection Ind | No |
| Unsuitable Mainline Ind | Yes |
| Other Restrictions 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 | Local Distribution Company |
| 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 | Small leak that would not have registered on scada system. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Excavation Damage |
| Cause Details | Previous Damage Due To Excavation Activity |
| Ex Party Type | Previous Damage Due To Excavation Activity |
| Notify Cga Dirt | Yes |
| Public Row Ind | Yes |
| Public Subtype | County Road |
| Excavator Type | Unknown/other |
| Excavator Equipment | Unknown/other |
| Work Performed | Unknown/other |
| One Call Notified Ind | No |
| Root Cause Category | Miscellaneous Root Causes |
| Root Cause Type | Previous Damage |
| Preparer Name | J**** C**** |
| Preparer Title | Dot Compliance Manager |
| Preparer Email | J**********@e**************.com |
| Preparer Telephone | 3184293664 |
| Authorizer Name | J***** C***** |
| Authorizer Title | Senior Manager Dot Compliance |
| Authorizer Telephone | 3184293606 |
| Authorizer Email | J************@e**************.com |
| Narrative | On 9/16/15 at 17:33 an enable employee with the el dorado district reports a possible leak was found during a local distribution company leak survey of their pipeline. The enable employee reported the possible leak to system control. Enable's kt-1, the distribution company and 2 foreign pipelines are near the possible leak. The enable employee could not confirm which of the 4 pipelines in the area is leaking. Leak indications were small. On 9/17/15 11:15 enable employees confirmed kt-1 is leaking to system control. At 15:22 local employees calculated and provided system control a cost estimate for repairs of $300,000. On 9/17/15 16:10 system control notified the nrc (report # 1128754) after deciding and determining they would replace the crossing. On 9/19/2015 performed a line stop to eliminate the leaking valve and pipe crossing. The crossing pipe was left in place and a new section of pipe was installed adjacent to the existing pipeline crossing. |
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