Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2019-02-27 — 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)
$78
Incident datetime
2019-02-27 17:25
Report number
Location
TX, WILLIAMSON
Narrative
Additional nrc# 1239009 on february 27, 2019, out of an abundance of caution based on circumstances that arose in georgetown, texas, atmos energy determined that in the judgment of the operator conditions became significant and warranted a telephonic incident report to its safety regulators due to an abnormal, continued presence of residual gas following a routine response to a leak investigation. Specifically, atmos energy had previously responded to a report of presence of a natural gas odor and discovered a leak at the intersection of river bend dr. And oak ln. Per applicable rules and atmos energy's routine operating procedures approved by the railroad commission, crews took immediate action to repair discovered leaks, and began continuous monitoring. During the process of continuous monitoring, atmos energy conducted precautionary evacuations of the immediate area beginning february 21, 2019. The main serving the affected area was shut down at approximately 10:00 pm on february 21, 2019. However, the soil or other conditions within the area appeared to be causing natural gas to ventilate slowly. Thus, as the leak monitoring and survey activity was expanded, unsafe levels of residual gas were detected to still be present in a larger area which led to additional evacuations. At this point, atmos energy elected to make a report. The conditions in georgetown resulted in disconnection of service to 73 meters and the evacuation of 86 structures. Evacuations were lifted according to our procedures and in coordination with the city of georgetown, and service has been restored to all customers. Atmos energy's root cause analysis of the leak in question determined the cause of the leak to be improper butt fusion on the 3-inch main.
Detailed record list
Occurred At
2019-02-27 17:25:00
Year
2019
Report Received Date
2019-03-22 00:00:00
Iyear
2019.0
Report Number
20190031.0
Supplemental Number
32804.0
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
2019-02-27 17:25:00
Location Street Address
River Bend & Oak Lane
Location City Name
Georgetown
Location County Name
Williamson
Location State Abbreviation
TX
Location Postal Code
78628
Location Latitude
30.660434
Location Longitude
-97.69123
Nrc Rpt Datetime
2019-02-27 17:25:00
Nrc Rpt Num
1238800
Commodity Released Type
Natural Gas
Unintentional Release
106.6
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
86.0
Incident Identified Datetime
2019-02-27 17:25:00
On Site Datetime
2019-02-20 18:00:00
Federal
No
Location Type
Utility Right-Of-Way / Easement
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
36.0
Crossing
No
Pipe Facility Type
Privately Owned
System Part Involved
Main
Installation Year
1973.0
Pipe Diameter
3.0
Pipe Specification
Unknown
Pipe Manufacturer
Unknown
Material Involved
Plastic
Plastic Type
Polyethylene (Pe)
Wt Plastic Unknown Ind
Unknown
Material Pe Pipe Code
Unknown
Release Type
Leak
Leak Type
Connection Failure
Class Location Type
Class 3 Location
Est Cost Oper Paid
0.0
Est Cost Prop Damage
78.0
Est Cost Emergency
4236.0
Est Cost Other
0.0
Est Cost Unintentional Release
507.0
Prpty
4821.0
Commercial Affected
24.0
Industrial Affected
0.0
Residences Affected
49.0
Accident Psig
31.0
Normal Psig
30.0
Mop Psig
55.0
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
Other
Accident Details
Leak Survey Indicating Presence Of Residual Gas
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 could not be seen by controllers
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Pipe, Weld, Or Joint Failure
Cause Details
Fusion Joint
Pwjf Failure Type
Fusion Joint
Plastic Joint Subtype
Butt, Heat Fusion
Fpw Installed Year
1973
Fpw First Plastic Type
Polyethylene (Pe)
Fpw Second Plastic Type
Polyethylene (Pe)
Additional Crack Ind
Yes
Additional Lack Fusion Ind
Yes
Result Construction Ind
Yes
Result Construction Subtype
Poor Workmanship
Hydrotest Conducted Ind
No
Preparer Name
M****** L****
Preparer Title
Director Of Operations
Preparer Email
M************@a**********.com
Preparer Telephone
512-310-3820
Preparer Fax
512-310-3880
Authorizer Name
M**** S*****
Authorizer Title
Vice President Technical Services
Authorizer Telephone
214-206-2033
Authorizer Email
M***********@a**********.com
Narrative
Additional nrc# 1239009 on february 27, 2019, out of an abundance of caution based on circumstances that arose in georgetown, texas, atmos energy determined that in the judgment of the operator conditions became significant and warranted a telephonic incident report to its safety regulators due to an abnormal, continued presence of residual gas following a routine response to a leak investigation. Specifically, atmos energy had previously responded to a report of presence of a natural gas odor and discovered a leak at the intersection of river bend dr. And oak ln. Per applicable rules and atmos energy's routine operating procedures approved by the railroad commission, crews took immediate action to repair discovered leaks, and began continuous monitoring. During the process of continuous monitoring, atmos energy conducted precautionary evacuations of the immediate area beginning february 21, 2019. The main serving the affected area was shut down at approximately 10:00 pm on february 21, 2019. However, the soil or other conditions within the area appeared to be causing natural gas to ventilate slowly. Thus, as the leak monitoring and survey activity was expanded, unsafe levels of residual gas were detected to still be present in a larger area which led to additional evacuations. At this point, atmos energy elected to make a report. The conditions in georgetown resulted in disconnection of service to 73 meters and the evacuation of 86 structures. Evacuations were lifted according to our procedures and in coordination with the city of georgetown, and service has been restored to all customers. Atmos energy's root cause analysis of the leak in question determined the cause of the leak to be improper butt fusion on the 3-inch main.
| Occurred At | 2019-02-27 17:25:00 |
|---|---|
| Year | 2019 |
| Report Received Date | 2019-03-22 00:00:00 |
| Iyear | 2019.0 |
| Report Number | 20190031.0 |
| Supplemental Number | 32804.0 |
| 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 | 2019-02-27 17:25:00 |
| Location Street Address | River Bend & Oak Lane |
| Location City Name | Georgetown |
| Location County Name | Williamson |
| Location State Abbreviation | TX |
| Location Postal Code | 78628 |
| Location Latitude | 30.660434 Google Maps OpenStreetMap |
| Location Longitude | -97.69123 Google Maps OpenStreetMap |
| Nrc Rpt Datetime | 2019-02-27 17:25:00 |
| Nrc Rpt Num | 1238800 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 106.6 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 86.0 |
| Incident Identified Datetime | 2019-02-27 17:25:00 |
| On Site Datetime | 2019-02-20 18:00:00 |
| Federal | No |
| Location Type | Utility Right-Of-Way / Easement |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 36.0 |
| Crossing | No |
| Pipe Facility Type | Privately Owned |
| System Part Involved | Main |
| Installation Year | 1973.0 |
| Pipe Diameter | 3.0 |
| Pipe Specification | Unknown |
| Pipe Manufacturer | Unknown |
| Material Involved | Plastic |
| Plastic Type | Polyethylene (Pe) |
| Wt Plastic Unknown Ind | Unknown |
| Material Pe Pipe Code | Unknown |
| Release Type | Leak |
| Leak Type | Connection Failure |
| Class Location Type | Class 3 Location |
| Est Cost Oper Paid | 0.0 |
| Est Cost Prop Damage | 78.0 |
| Est Cost Emergency | 4236.0 |
| Est Cost Other | 0.0 |
| Est Cost Unintentional Release | 507.0 |
| Prpty | 4821.0 |
| Commercial Affected | 24.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 49.0 |
| Accident Psig | 31.0 |
| Normal Psig | 30.0 |
| Mop Psig | 55.0 |
| 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 | Other |
| Accident Details | Leak Survey Indicating Presence Of Residual Gas |
| 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 could not be seen by controllers |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Pipe, Weld, Or Joint Failure |
| Cause Details | Fusion Joint |
| Pwjf Failure Type | Fusion Joint |
| Plastic Joint Subtype | Butt, Heat Fusion |
| Fpw Installed Year | 1973 |
| Fpw First Plastic Type | Polyethylene (Pe) |
| Fpw Second Plastic Type | Polyethylene (Pe) |
| Additional Crack Ind | Yes |
| Additional Lack Fusion Ind | Yes |
| Result Construction Ind | Yes |
| Result Construction Subtype | Poor Workmanship |
| Hydrotest Conducted Ind | No |
| Preparer Name | M****** L**** |
| Preparer Title | Director Of Operations |
| Preparer Email | M************@a**********.com |
| Preparer Telephone | 512-310-3820 |
| Preparer Fax | 512-310-3880 |
| Authorizer Name | M**** S***** |
| Authorizer Title | Vice President Technical Services |
| Authorizer Telephone | 214-206-2033 |
| Authorizer Email | M***********@a**********.com |
| Narrative | Additional nrc# 1239009 on february 27, 2019, out of an abundance of caution based on circumstances that arose in georgetown, texas, atmos energy determined that in the judgment of the operator conditions became significant and warranted a telephonic incident report to its safety regulators due to an abnormal, continued presence of residual gas following a routine response to a leak investigation. Specifically, atmos energy had previously responded to a report of presence of a natural gas odor and discovered a leak at the intersection of river bend dr. And oak ln. Per applicable rules and atmos energy's routine operating procedures approved by the railroad commission, crews took immediate action to repair discovered leaks, and began continuous monitoring. During the process of continuous monitoring, atmos energy conducted precautionary evacuations of the immediate area beginning february 21, 2019. The main serving the affected area was shut down at approximately 10:00 pm on february 21, 2019. However, the soil or other conditions within the area appeared to be causing natural gas to ventilate slowly. Thus, as the leak monitoring and survey activity was expanded, unsafe levels of residual gas were detected to still be present in a larger area which led to additional evacuations. At this point, atmos energy elected to make a report. The conditions in georgetown resulted in disconnection of service to 73 meters and the evacuation of 86 structures. Evacuations were lifted according to our procedures and in coordination with the city of georgetown, and service has been restored to all customers. Atmos energy's root cause analysis of the leak in question determined the cause of the leak to be improper butt fusion on the 3-inch main. |
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