Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2011-05-24 — TX
Operator
Enogex Llc
Cause
Natural Force Damage
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$100
Incident datetime
2011-05-24 15:45
Report number
Location
TX
Narrative
A tornado struck the l-102 wiedemann junction. A utility pole located outside the junction fell across the above ground portion of our sixteen inch pipeline and broke a 1 inch pipe nipple at the threaded connection to the pipeline. Gas control remotely closed the nearest automated upstream valve at our 12-12 juction and the nearest downstream valve at our edmond junction. On-call personnel arrived onsite to discover natural gas venting through the broken nipple. Personnel isolated a 16 inch manual valve inside the junction and vented a 10 miles segment of pipeline prior to replacing the broken nipple and 1 inch vent valve.
Detailed record list
Report Received Date
2011-06-23 00:00:00
Iyear
2011
Report Number
20110193
Supplemental Number
15263
Report Type
Original Final
Operator Id
26330
Name
Enogex Llc
Operator Street Address
1300 Main Street
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Local Datetime
2011-05-24 15:45:00
Location Latitude
36.6385
Location Longitude
-97.816
Commodity Released Type
Natural Gas
Unintentional Release
361.93
Intentional Release
2404.93
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2011-05-24 16:15:00
Restart Datetime
2011-05-24 17:45:00
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Incident Identified Datetime
2011-05-24 15:45:00
On Site Datetime
2011-05-24 16:15:00
On Off Shore
Onshore
Onshore State Abbreviation
Ok
Onshore Postal Code
73078
Onshore City Name
Piedmont
Onshore County Name
Canadian
Designated Location
Milepost
Designated Name
None
Pipe Fac Name
Wiedemann Junction
Segment Name
None
Federal
No
Location Type
Operator-Controlled Property
Incident Area Type
Aboveground
Incident Area Subtype
Typical Aboveground Facility Piping Or Appurtenance
Crossing
No
Pipe Facility Type
Intrastate
System Part Involved
Onshore Pipeline, Including Valve Sites
Item Involved
Other
Item Involved Details
1 Inch Pipe Nipple
Material Involved
Carbon Steel
Release Type
Other
Release Type Details
Utility Pole Fell On Top Of Above Ground Piping And Broke 1 Inch Pipe Nipple At Threaded Conenction To Pipeline.
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
293
Heat Damage Ind
No
Non Heat Damage Ind
No
Hca Fatalities Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
1494
Est Cost Intentional Release
8437
Est Cost Prop Damage
100
Est Cost Emergency
600
Est Cost Other
0
Prpty
10631
Accident Psig
381
Mop Psig
720
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
Remotely Controlled
Downstream Valve Type Ind
Remotely Controlled
Length Segment Isolated
68640
Internal Inspection 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 Emergency Responder
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
Incident was caused by an act of god, I.E. Tornado.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Natural Force Damage
Cause Details
High Winds
Natural Force Type
High Winds
Nf Extreme Weather Ind
Yes
Nf Tornado Ind
Yes
Preparer Name
M*** R***
Preparer Title
Manager Ehs Assessment And Compliance
Preparer Email
R*****@o**.com
Preparer Telephone
405 558-4685
Preparer Fax
405 557-8618
Authorizer Name
P*** M B*****
Authorizer Title
Vp Operations
Authorizer Telephone
405 525-7788
Authorizer Email
B*******@o**.com
Narrative
A tornado struck the l-102 wiedemann junction. A utility pole located outside the junction fell across the above ground portion of our sixteen inch pipeline and broke a 1 inch pipe nipple at the threaded connection to the pipeline. Gas control remotely closed the nearest automated upstream valve at our 12-12 juction and the nearest downstream valve at our edmond junction. On-call personnel arrived onsite to discover natural gas venting through the broken nipple. Personnel isolated a 16 inch manual valve inside the junction and vented a 10 miles segment of pipeline prior to replacing the broken nipple and 1 inch vent valve.
| Report Received Date | 2011-06-23 00:00:00 |
|---|---|
| Iyear | 2011 |
| Report Number | 20110193 |
| Supplemental Number | 15263 |
| Report Type | Original Final |
| Operator Id | 26330 PHMSA Enforcement |
| Name | Enogex Llc |
| Operator Street Address | 1300 Main Street |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77002 |
| Local Datetime | 2011-05-24 15:45:00 |
| Location Latitude | 36.6385 Google Maps OpenStreetMap |
| Location Longitude | -97.816 Google Maps OpenStreetMap |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 361.93 |
| Intentional Release | 2404.93 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2011-05-24 16:15:00 |
| Restart Datetime | 2011-05-24 17:45:00 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2011-05-24 15:45:00 |
| On Site Datetime | 2011-05-24 16:15:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Ok |
| Onshore Postal Code | 73078 |
| Onshore City Name | Piedmont |
| Onshore County Name | Canadian |
| Designated Location | Milepost |
| Designated Name | None |
| Pipe Fac Name | Wiedemann Junction |
| Segment Name | None |
| Federal | No |
| Location Type | Operator-Controlled Property |
| Incident Area Type | Aboveground |
| Incident Area Subtype | Typical Aboveground Facility Piping Or Appurtenance |
| Crossing | No |
| Pipe Facility Type | Intrastate |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| Item Involved | Other |
| Item Involved Details | 1 Inch Pipe Nipple |
| Material Involved | Carbon Steel |
| Release Type | Other |
| Release Type Details | Utility Pole Fell On Top Of Above Ground Piping And Broke 1 Inch Pipe Nipple At Threaded Conenction To Pipeline. |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 293 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Hca Fatalities Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 1494 |
| Est Cost Intentional Release | 8437 |
| Est Cost Prop Damage | 100 |
| Est Cost Emergency | 600 |
| Est Cost Other | 0 |
| Prpty | 10631 |
| Accident Psig | 381 |
| Mop Psig | 720 |
| 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 | Remotely Controlled |
| Downstream Valve Type Ind | Remotely Controlled |
| Length Segment Isolated | 68640 |
| Internal Inspection 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 Emergency Responder |
| 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 | Incident was caused by an act of god, I.E. Tornado. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Natural Force Damage |
| Cause Details | High Winds |
| Natural Force Type | High Winds |
| Nf Extreme Weather Ind | Yes |
| Nf Tornado Ind | Yes |
| Preparer Name | M*** R*** |
| Preparer Title | Manager Ehs Assessment And Compliance |
| Preparer Email | R*****@o**.com |
| Preparer Telephone | 405 558-4685 |
| Preparer Fax | 405 557-8618 |
| Authorizer Name | P*** M B***** |
| Authorizer Title | Vp Operations |
| Authorizer Telephone | 405 525-7788 |
| Authorizer Email | B*******@o**.com |
| Narrative | A tornado struck the l-102 wiedemann junction. A utility pole located outside the junction fell across the above ground portion of our sixteen inch pipeline and broke a 1 inch pipe nipple at the threaded connection to the pipeline. Gas control remotely closed the nearest automated upstream valve at our 12-12 juction and the nearest downstream valve at our edmond junction. On-call personnel arrived onsite to discover natural gas venting through the broken nipple. Personnel isolated a 16 inch manual valve inside the junction and vented a 10 miles segment of pipeline prior to replacing the broken nipple and 1 inch vent valve. |
External Resources
PHMSA pipeline safety insights.
Product
Features
Company
All rights reserved. Copyright © by ClearPHMSA