Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2017-12-31 — TX
Operator
Atmos Energy Corporation - Mid-Tex
Cause
Pipe, Weld, Or Joint Failure
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$24,672
Incident datetime
2017-12-31 21:20
Report number
Location
TX, DALLAS
Narrative
Additional nrc report no. 1200977 at 7:55 pm on 12-31-2017, atmos energy received a call from the irving fire department reporting the smell of natural gas along o'connor road in irving, texas. A service technician was dispatched at 8:23 pm to investigate, and proceeded to locate an underground gas leak near the intersection of colgate lane and o'connor road at approximately 9:20 pm. A construction crew arrived onsite at approximately 10:00 pm. After completing line locates, the construction crew began excavating along a 6" poly main in o'connor road to pinpoint and repair the leak. The crew requested assistance from the irving fire department, which arrived onsite at approximately 3:15 am on 1-1-2018. The construction crew continued working to isolate and repair the leak until approximately 5:00 am when the residence at 3567 colgate lane ignited. All occupants were evacuated from the residence without injury. Once the fire was extinguished, the construction crew resumed work and eliminated the leak at approximately 6:30 am by "squeezing off" approximately 80' of the poly main. With the exception of the residence where the fire occurred, gas service in the area was not disrupted. At 7:06 am, an atmos energy representative determined that the criteria for a reportable incident may have been reached and a telephonic report was made to PHMSA (nrc 1200886) at 7:25 am and the texas railroad commission (trrc 1693) at 7:35 am. At approximately 11:25 am the location of the leak was exposed and it was determined that the 6" poly main had separated from one end of a mechanical, bolted fitting that was used to join the main. The crew completed repairs by fusing a 5' section of 6" poly to replace the mechanical bolted coupling and placed the 80' section of the 6" poly main back in service at 4:00 pm.
Detailed record list
Occurred At
2017-12-31 21:20:00
Year
2017
Report Received Date
2018-01-31 00:00:00
Iyear
2018.0
Report Number
20180017.0
Supplemental Number
31243.0
Report Type
Supplemental Final
Operator Id
31348
Name
Atmos Energy Corporation - Mid-Tex
Operator Street Address
5430 Lbj Freeway Suite 1800
Operator City Name
Dallas
Operator State Abbreviation
TX
Operator Postal Code
75240
Local Datetime
2018-01-01 04:57:00
Location Street Address
Intersection Of Colgate Lane And O'connor Rd.
Location City Name
Irving
Location County Name
Dallas
Location State Abbreviation
TX
Location Postal Code
75062
Location Latitude
32.8511
Location Longitude
-96.9504
Nrc Rpt Datetime
2018-01-01 07:25:00
Nrc Rpt Num
1200886
Commodity Released Type
Natural Gas
Unintentional Release
465.0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
Yes
Explode Ind
Yes
Num Pub Evacuated
5.0
Incident Identified Datetime
2017-12-31 21:20:00
On Site Datetime
2017-12-31 22:00:00
Federal
No
Location Type
Public Property
Incident Area Type
Underground
Incident Area Subtype
Under Pavement
Depth Of Cover
24.0
Crossing
No
Pipe Facility Type
Privately Owned
System Part Involved
Main
Installation Year
1972.0
Pipe Diameter
6.0
Pipe Specification
Pe2306
Pipe Manufacturer
Nipak
Material Involved
Plastic
Plastic Type
Polyethylene (Pe)
Plastic Sdr
11
Material Pe Pipe Code
2306
Release Type
Leak
Leak Type
Connection Failure
Class Location Type
Class 3 Location
Est Cost Oper Paid
254000.0
Est Cost Prop Damage
24672.0
Est Cost Emergency
8756.0
Est Cost Other
0.0
Est Cost Unintentional Release
3128.0
Prpty
290556.0
Commercial Affected
0.0
Industrial Affected
0.0
Residences Affected
1.0
Accident Psig
36.0
Normal Psig
36.0
Mop Psig
50.0
Accident Pressure
Pressure Did Not Exceed Maop
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
The scada system did not detect the incident due to the relatively small drop in pressure caused by the incident
Employee Drug Test Ind
Yes
Num Employees Tested
3
Num Employees Failed
0
Contractor Drug Test Ind
No
Cause
Pipe, Weld, Or Joint Failure
Cause Details
Mechanical Joint Failure
Pwjf Failure Type
Mechanical Joint Failure
Mec Fitting Involved
Other Compression Type Fitting
Mec Fitting Invlvd Dtl
Coupling
Mec Fitting Type
Other
Mec Fttng Type Detail
Bolted
Mec Manufacturer
Unknown
Mec Fitting Material
Other
Mec Fitting Material Detail
Materials Joined: 1st Plastic, 2nd Plastic
Additional Other Ind
Yes
Additional Factor Details
Separation
Result Construction Ind
Yes
Result Construction Subtype
Poor Workmanship
Hydrotest Conducted Ind
No
Preparer Name
K** P****
Preparer Title
Operations Manager
Preparer Email
J**********@a**********.com
Preparer Telephone
817-375-7902
Preparer Fax
817-375-7979
Authorizer Name
M**** S*****
Authorizer Title
Vice President Technical Services
Authorizer Telephone
214-206-2033
Authorizer Email
M***********@a**********.com
Narrative
Additional nrc report no. 1200977 at 7:55 pm on 12-31-2017, atmos energy received a call from the irving fire department reporting the smell of natural gas along o'connor road in irving, texas. A service technician was dispatched at 8:23 pm to investigate, and proceeded to locate an underground gas leak near the intersection of colgate lane and o'connor road at approximately 9:20 pm. A construction crew arrived onsite at approximately 10:00 pm. After completing line locates, the construction crew began excavating along a 6" poly main in o'connor road to pinpoint and repair the leak. The crew requested assistance from the irving fire department, which arrived onsite at approximately 3:15 am on 1-1-2018. The construction crew continued working to isolate and repair the leak until approximately 5:00 am when the residence at 3567 colgate lane ignited. All occupants were evacuated from the residence without injury. Once the fire was extinguished, the construction crew resumed work and eliminated the leak at approximately 6:30 am by "squeezing off" approximately 80' of the poly main. With the exception of the residence where the fire occurred, gas service in the area was not disrupted. At 7:06 am, an atmos energy representative determined that the criteria for a reportable incident may have been reached and a telephonic report was made to PHMSA (nrc 1200886) at 7:25 am and the texas railroad commission (trrc 1693) at 7:35 am. At approximately 11:25 am the location of the leak was exposed and it was determined that the 6" poly main had separated from one end of a mechanical, bolted fitting that was used to join the main. The crew completed repairs by fusing a 5' section of 6" poly to replace the mechanical bolted coupling and placed the 80' section of the 6" poly main back in service at 4:00 pm.
| Occurred At | 2017-12-31 21:20:00 |
|---|---|
| Year | 2017 |
| Report Received Date | 2018-01-31 00:00:00 |
| Iyear | 2018.0 |
| Report Number | 20180017.0 |
| Supplemental Number | 31243.0 |
| Report Type | Supplemental Final |
| Operator Id | 31348 PHMSA Enforcement |
| Name | Atmos Energy Corporation - Mid-Tex |
| Operator Street Address | 5430 Lbj Freeway Suite 1800 |
| Operator City Name | Dallas |
| Operator State Abbreviation | TX |
| Operator Postal Code | 75240 |
| Local Datetime | 2018-01-01 04:57:00 |
| Location Street Address | Intersection Of Colgate Lane And O'connor Rd. |
| Location City Name | Irving |
| Location County Name | Dallas |
| Location State Abbreviation | TX |
| Location Postal Code | 75062 |
| Location Latitude | 32.8511 Google Maps OpenStreetMap |
| Location Longitude | -96.9504 Google Maps OpenStreetMap |
| Nrc Rpt Datetime | 2018-01-01 07:25:00 |
| Nrc Rpt Num | 1200886 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 465.0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | Yes |
| Explode Ind | Yes |
| Num Pub Evacuated | 5.0 |
| Incident Identified Datetime | 2017-12-31 21:20:00 |
| On Site Datetime | 2017-12-31 22:00:00 |
| Federal | No |
| Location Type | Public Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Pavement |
| Depth Of Cover | 24.0 |
| Crossing | No |
| Pipe Facility Type | Privately Owned |
| System Part Involved | Main |
| Installation Year | 1972.0 |
| Pipe Diameter | 6.0 |
| Pipe Specification | Pe2306 |
| Pipe Manufacturer | Nipak |
| Material Involved | Plastic |
| Plastic Type | Polyethylene (Pe) |
| Plastic Sdr | 11 |
| Material Pe Pipe Code | 2306 |
| Release Type | Leak |
| Leak Type | Connection Failure |
| Class Location Type | Class 3 Location |
| Est Cost Oper Paid | 254000.0 |
| Est Cost Prop Damage | 24672.0 |
| Est Cost Emergency | 8756.0 |
| Est Cost Other | 0.0 |
| Est Cost Unintentional Release | 3128.0 |
| Prpty | 290556.0 |
| Commercial Affected | 0.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 1.0 |
| Accident Psig | 36.0 |
| Normal Psig | 36.0 |
| Mop Psig | 50.0 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| 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 | The scada system did not detect the incident due to the relatively small drop in pressure caused by the incident |
| Employee Drug Test Ind | Yes |
| Num Employees Tested | 3 |
| Num Employees Failed | 0 |
| Contractor Drug Test Ind | No |
| Cause | Pipe, Weld, Or Joint Failure |
| Cause Details | Mechanical Joint Failure |
| Pwjf Failure Type | Mechanical Joint Failure |
| Mec Fitting Involved | Other Compression Type Fitting |
| Mec Fitting Invlvd Dtl | Coupling |
| Mec Fitting Type | Other |
| Mec Fttng Type Detail | Bolted |
| Mec Manufacturer | Unknown |
| Mec Fitting Material | Other |
| Mec Fitting Material Detail | Materials Joined: 1st Plastic, 2nd Plastic |
| Additional Other Ind | Yes |
| Additional Factor Details | Separation |
| Result Construction Ind | Yes |
| Result Construction Subtype | Poor Workmanship |
| Hydrotest Conducted Ind | No |
| Preparer Name | K** P**** |
| Preparer Title | Operations Manager |
| Preparer Email | J**********@a**********.com |
| Preparer Telephone | 817-375-7902 |
| Preparer Fax | 817-375-7979 |
| Authorizer Name | M**** S***** |
| Authorizer Title | Vice President Technical Services |
| Authorizer Telephone | 214-206-2033 |
| Authorizer Email | M***********@a**********.com |
| Narrative | Additional nrc report no. 1200977 at 7:55 pm on 12-31-2017, atmos energy received a call from the irving fire department reporting the smell of natural gas along o'connor road in irving, texas. A service technician was dispatched at 8:23 pm to investigate, and proceeded to locate an underground gas leak near the intersection of colgate lane and o'connor road at approximately 9:20 pm. A construction crew arrived onsite at approximately 10:00 pm. After completing line locates, the construction crew began excavating along a 6" poly main in o'connor road to pinpoint and repair the leak. The crew requested assistance from the irving fire department, which arrived onsite at approximately 3:15 am on 1-1-2018. The construction crew continued working to isolate and repair the leak until approximately 5:00 am when the residence at 3567 colgate lane ignited. All occupants were evacuated from the residence without injury. Once the fire was extinguished, the construction crew resumed work and eliminated the leak at approximately 6:30 am by "squeezing off" approximately 80' of the poly main. With the exception of the residence where the fire occurred, gas service in the area was not disrupted. At 7:06 am, an atmos energy representative determined that the criteria for a reportable incident may have been reached and a telephonic report was made to PHMSA (nrc 1200886) at 7:25 am and the texas railroad commission (trrc 1693) at 7:35 am. At approximately 11:25 am the location of the leak was exposed and it was determined that the 6" poly main had separated from one end of a mechanical, bolted fitting that was used to join the main. The crew completed repairs by fusing a 5' section of 6" poly to replace the mechanical bolted coupling and placed the 80' section of the 6" poly main back in service at 4:00 pm. |
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