Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2020-03-05 — TX
Operator
Atmos Energy Corporation - Mid-Tex
Cause
Equipment Failure
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$0
Incident datetime
2020-03-05 09:30
Report number
Location
TX, CORYELL
Narrative
At 9:30 am on march 5, 2020, a threaded fitting failed at a connection point with a 2" brass ball valve at ground level on a recently installed temporary bypass at the copperas cove city gate station, causing an interruption in service. The failure of the threaded connection on the temporary bypass valve occurred during support cribbing adjustment. Atmos energy identified additional potential contributing factors as the valve material and possible under-torqueing of the threaded connection. An initial estimate of the copperas cove system based on the facts available at that time resulted in an underestimation of the total number of customers and the cost of relights. However, a subsequent review of outage reports when refining that estimate indicated that the customer outage was more extensive than originally anticipated. At 12:30 pm, the relight costs were estimated to be greater than $50,000, and a telephonic report was made to the national response center at 12:51 pm. Gas service was interrupted to 270 commercial and 4067 residential customers. The appropriate repairs were made and the facility was restarted at 12:12 am on march 6, 2020. Service has been restored to all affected customers. 48 hr. Nrc # 1272905
Detailed record list
Occurred At
2020-03-05 09:30:00
Year
2020
Report Received Date
2020-04-03 00:00:00
Iyear
2020.0
Report Number
20200041.0
Supplemental Number
34100.0
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
2020-03-05 09:30:00
Location Street Address
2707 Us Hwy 190
Location City Name
Copperas Cove
Location County Name
Coryell
Location State Abbreviation
TX
Location Postal Code
76522
Location Latitude
31.12097
Location Longitude
-97.8713
Nrc Rpt Datetime
2020-03-05 11:51:00
Nrc Rpt Num
1272777
Commodity Released Type
Natural Gas
Unintentional Release
51.0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0.0
Incident Identified Datetime
2020-03-05 09:30:00
On Site Datetime
2020-03-05 10:00:00
Federal
No
Location Type
Operator-Controlled Property
Incident Area Type
Aboveground
Incident Area Subtype
Typical Aboveground Facility Piping Or Appurtenance (E.g. Value Or Regulator Station, Outdoor Meter Set)
Crossing
No
Pipe Facility Type
Investor Owned
System Part Involved
District Regulator/metering Station
Installation Year
2020.0
Material Involved
Other
Material Details
Brass Ball Valve To Steel Pipe Nipple
Release Type
Leak
Leak Type
Connection Failure
Class Location Type
Class 3 Location
Est Cost Oper Paid
0.0
Est Cost Prop Damage
0.0
Est Cost Emergency
412485.0
Est Cost Other
0.0
Est Cost Unintentional Release
187.0
Prpty
412672.0
Commercial Affected
270.0
Industrial Affected
0.0
Residences Affected
4067.0
Accident Psig
30.0
Normal Psig
30.0
Mop Psig
40.0
Accident Pressure
Pressure Did Not Exceed Maop
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
Yes
Scada Conf Ind
Yes
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
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 not related to control room operation
Employee Drug Test Ind
Yes
Num Employees Tested
2
Num Employees Failed
0
Contractor Drug Test Ind
Yes
Num Contractors Tested
8
Num Contractors Failed
0
Cause
Equipment Failure
Cause Details
Threaded Connection Failure
Eq Failure Type
Threaded Connection Failure
Other Stripped Ind
Threaded Fitting
Preparer Name
D*** G*******
Preparer Title
Compliance Supervisor
Preparer Email
D************@a**********.com
Preparer Telephone
512-844-8270
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
At 9:30 am on march 5, 2020, a threaded fitting failed at a connection point with a 2" brass ball valve at ground level on a recently installed temporary bypass at the copperas cove city gate station, causing an interruption in service. The failure of the threaded connection on the temporary bypass valve occurred during support cribbing adjustment. Atmos energy identified additional potential contributing factors as the valve material and possible under-torqueing of the threaded connection. An initial estimate of the copperas cove system based on the facts available at that time resulted in an underestimation of the total number of customers and the cost of relights. However, a subsequent review of outage reports when refining that estimate indicated that the customer outage was more extensive than originally anticipated. At 12:30 pm, the relight costs were estimated to be greater than $50,000, and a telephonic report was made to the national response center at 12:51 pm. Gas service was interrupted to 270 commercial and 4067 residential customers. The appropriate repairs were made and the facility was restarted at 12:12 am on march 6, 2020. Service has been restored to all affected customers. 48 hr. Nrc # 1272905
| Occurred At | 2020-03-05 09:30:00 |
|---|---|
| Year | 2020 |
| Report Received Date | 2020-04-03 00:00:00 |
| Iyear | 2020.0 |
| Report Number | 20200041.0 |
| Supplemental Number | 34100.0 |
| 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 | 2020-03-05 09:30:00 |
| Location Street Address | 2707 Us Hwy 190 |
| Location City Name | Copperas Cove |
| Location County Name | Coryell |
| Location State Abbreviation | TX |
| Location Postal Code | 76522 |
| Location Latitude | 31.12097 Google Maps OpenStreetMap |
| Location Longitude | -97.8713 Google Maps OpenStreetMap |
| Nrc Rpt Datetime | 2020-03-05 11:51:00 |
| Nrc Rpt Num | 1272777 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 51.0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0.0 |
| Incident Identified Datetime | 2020-03-05 09:30:00 |
| On Site Datetime | 2020-03-05 10:00:00 |
| Federal | No |
| Location Type | Operator-Controlled Property |
| Incident Area Type | Aboveground |
| Incident Area Subtype | Typical Aboveground Facility Piping Or Appurtenance (E.g. Value Or Regulator Station, Outdoor Meter Set) |
| Crossing | No |
| Pipe Facility Type | Investor Owned |
| System Part Involved | District Regulator/metering Station |
| Installation Year | 2020.0 |
| Material Involved | Other |
| Material Details | Brass Ball Valve To Steel Pipe Nipple |
| Release Type | Leak |
| Leak Type | Connection Failure |
| Class Location Type | Class 3 Location |
| Est Cost Oper Paid | 0.0 |
| Est Cost Prop Damage | 0.0 |
| Est Cost Emergency | 412485.0 |
| Est Cost Other | 0.0 |
| Est Cost Unintentional Release | 187.0 |
| Prpty | 412672.0 |
| Commercial Affected | 270.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 4067.0 |
| Accident Psig | 30.0 |
| Normal Psig | 30.0 |
| Mop Psig | 40.0 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | Yes |
| Scada Conf Ind | Yes |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| 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 not related to control room operation |
| Employee Drug Test Ind | Yes |
| Num Employees Tested | 2 |
| Num Employees Failed | 0 |
| Contractor Drug Test Ind | Yes |
| Num Contractors Tested | 8 |
| Num Contractors Failed | 0 |
| Cause | Equipment Failure |
| Cause Details | Threaded Connection Failure |
| Eq Failure Type | Threaded Connection Failure |
| Other Stripped Ind | Threaded Fitting |
| Preparer Name | D*** G******* |
| Preparer Title | Compliance Supervisor |
| Preparer Email | D************@a**********.com |
| Preparer Telephone | 512-844-8270 |
| 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 | At 9:30 am on march 5, 2020, a threaded fitting failed at a connection point with a 2" brass ball valve at ground level on a recently installed temporary bypass at the copperas cove city gate station, causing an interruption in service. The failure of the threaded connection on the temporary bypass valve occurred during support cribbing adjustment. Atmos energy identified additional potential contributing factors as the valve material and possible under-torqueing of the threaded connection. An initial estimate of the copperas cove system based on the facts available at that time resulted in an underestimation of the total number of customers and the cost of relights. However, a subsequent review of outage reports when refining that estimate indicated that the customer outage was more extensive than originally anticipated. At 12:30 pm, the relight costs were estimated to be greater than $50,000, and a telephonic report was made to the national response center at 12:51 pm. Gas service was interrupted to 270 commercial and 4067 residential customers. The appropriate repairs were made and the facility was restarted at 12:12 am on march 6, 2020. Service has been restored to all affected customers. 48 hr. Nrc # 1272905 |
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