Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2024-12-12 — GA
Operator
Atlanta Gas Light Co
Cause
Incorrect Operation
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
1 injury
Property damage (nominal)
$0
Incident datetime
2024-12-12 00:00 UTC
Report number
Location
GA, GWINNETT
Narrative
On november 12, 2024, agl contractor employees (sec) were working to isolate and retire approximately 1,340 feet of 4-inch steel main along highway 78, from n crestview drive sw to summit chase drive sw near grayson, ga in gwinnett county. The operation involved a cross-compression activity to remove the natural gas from the isolated section of the main and inject it back into the active system. After completing this cross-compression activity, a venturi was set up to remove any remaining residual gas from the retired section of the main before sealing and capping the ends. An investigation revealed a miscommunication among the contractor employees regarding the completion and confirmation of the removal of the residual gas. This miscommunication occurred before the welder and his helper entered the excavation to perform welding operations. Approximately five minutes into the welding process of installing a weld-over on the control fitting used to isolate the main, a flash fire ignited due to the remaining residual gas in the retired section of the main. Both contractor employees were wearing their personal protective equipment (ppe); however, the helper had removed his gloves and helmet to drink some water when the flash fire occurred, resulting in burns to his face and hands. Both contractor employees were taken to separate hospitals. One contractor employee was treated and released, while the other was admitted to the hospital the following morning. At that point, agl notified the national response center (nrc) under nrc report number 1416254. An additional nrc report number 1416456 was created for the same event following a supplemental call to the nrc to update the initial telephonic notice.
Detailed record list
Report Received Date
2024-12-12 00:00:00
Iyear
2024.0
Report Number
20240069.0
Supplemental Number
40348.0
Report Type
Supplemental Final
Operator Id
Name
Atlanta Gas Light Co
Operator Street Address
10 Peachtree Place Ne
Operator City Name
Atlanta
Operator State Abbreviation
GA
Operator Postal Code
30309.0
Time Zone
Eastern
Daylight Savings Ind
No
Location Street Address
1711 Athens Highway
Location City Name
Grayson
Location County Name
Gwinnett
Location State Abbreviation
GA
Location Postal Code
30017.0
Location Latitude
33.857973
Location Longitude
-83.984667
Flow Cont Other Ind
Yes
Flow Cont Other Detail
See Part H - Narrative
Nrc Rpt Num
1416254.0
Additional Nrc Report Numbers
1416456.0
Commodity Released Type
Natural Gas
Unintentional Release
0.01
Intentional Release
0.0
Fatality Ind
No
Fatal
0
Injury Ind
Yes
Num Emp Injuries
0
Num Contr Injuries
1
Num Er Injuries
0
Num Worker Injuries
0
Num Gp Injuries
0
Injure
1
Ignite Ind
Yes
How Extinguished
Other
How Extinguished Other Detail
See Part H - Narrative
Gas Consumed By Fire In Mcf
0.01
Explode Ind
No
Num Pub Evacuated
0.0
Communication State Fed Ind
Yes
Party Initiated Communication
Operator
Federal
No
Location Type
Public Property
Incident Area Type
Underground
Incident Area Subtype
Exposed Due To Excavation
Depth Of Cover
48.0
Other Underground Facilities
No
Crossing
No
Pipe Facility Type
Investor Owned
System Part Involved
Main
Installation Year
1974.0
Pipe Diameter
4.0
Pipe Specification
Api 5l
Pipe Manufacturer
Unknown
Material Involved
Steel
Steel Seam Type
Seamless
Wt Steel
0.156
Release Type
Other
Release Type Details
See Part H - Narrative
Class Location Type
Class 3 Location
Est Cost Oper Paid
0.0
Est Cost Prop Damage
0.0
Est Cost Emergency
1653.0
Est Cost Other
0.0
Gas Cost In Mcf
1.37
Est Cost Unintentional Release
0.0
Est Cost Intentional Release
0.0
Prpty
1653.0
Commercial Affected
0.0
Industrial Affected
0.0
Residences Affected
0.0
Num Persons Hosp Not Ovnght
1.0
Num Injured Treated By Emt
0.0
Num Resident Building Affctd
0.0
Num Business Building Affctd
0.0
Accident Psig
0.0
Normal Psig
0.0
Mop Psig
0.0
Mop Cfr Section
192.619(A)(2)
Maop Established Date
1974-03-08 00:00:00
Accident Pressure
Pressure Did Not Exceed Maop
Gas Odorized System Type
Other
Gas Odorized Sys Other Detail
See Part H - Narrative
Gas Odorized Lvl Not Msrd Ind
Yes
Scada In Place Ind
No
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Contractor Working For The Operator
Investigation Status
No, the facility was not monitored by a controller(s) at the time of the incident
Employee Drug Test Ind
No
Contractor Drug Test Ind
Yes
Num Contractors Tested
10
Num Contractors Failed
0
Cause
Incorrect Operation
Cause Details
Other Incorrect Operation
Operation Type
Other Incorrect Operation
Operation Details
See Part H - Narrative
Related Failure Follow Ind
Yes
Category Type
Decommissioning
Operator Qualification Ind
Yes
Qualified Individuals
Yes, They Were Qualified For The Task(S)
Preparer Name
R**** M*******
Preparer Title
Principal Compliance Engineer
Preparer Email
R*******@s*********.com
Preparer Telephone
4045843733
Preparer Fax
(404) 584-4710
Authorizer Name
L****** Q******
Authorizer Title
Director Compliance And Prm
Authorizer Telephone
(630) 388-2316
Authorizer Email
L******@s*********.com
Narrative
On november 12, 2024, agl contractor employees (sec) were working to isolate and retire approximately 1,340 feet of 4-inch steel main along highway 78, from n crestview drive sw to summit chase drive sw near grayson, ga in gwinnett county. The operation involved a cross-compression activity to remove the natural gas from the isolated section of the main and inject it back into the active system. After completing this cross-compression activity, a venturi was set up to remove any remaining residual gas from the retired section of the main before sealing and capping the ends. An investigation revealed a miscommunication among the contractor employees regarding the completion and confirmation of the removal of the residual gas. This miscommunication occurred before the welder and his helper entered the excavation to perform welding operations. Approximately five minutes into the welding process of installing a weld-over on the control fitting used to isolate the main, a flash fire ignited due to the remaining residual gas in the retired section of the main. Both contractor employees were wearing their personal protective equipment (ppe); however, the helper had removed his gloves and helmet to drink some water when the flash fire occurred, resulting in burns to his face and hands. Both contractor employees were taken to separate hospitals. One contractor employee was treated and released, while the other was admitted to the hospital the following morning. At that point, agl notified the national response center (nrc) under nrc report number 1416254. An additional nrc report number 1416456 was created for the same event following a supplemental call to the nrc to update the initial telephonic notice.
| Report Received Date | 2024-12-12 00:00:00 |
|---|---|
| Iyear | 2024.0 |
| Report Number | 20240069.0 |
| Supplemental Number | 40348.0 |
| Report Type | Supplemental Final |
| Operator Id | 792 PHMSA Enforcement |
| Name | Atlanta Gas Light Co |
| Operator Street Address | 10 Peachtree Place Ne |
| Operator City Name | Atlanta |
| Operator State Abbreviation | GA |
| Operator Postal Code | 30309.0 |
| Time Zone | Eastern |
| Daylight Savings Ind | No |
| Location Street Address | 1711 Athens Highway |
| Location City Name | Grayson |
| Location County Name | Gwinnett |
| Location State Abbreviation | GA |
| Location Postal Code | 30017.0 |
| Location Latitude | 33.857973 Google Maps OpenStreetMap |
| Location Longitude | -83.984667 Google Maps OpenStreetMap |
| Flow Cont Other Ind | Yes |
| Flow Cont Other Detail | See Part H - Narrative |
| Nrc Rpt Num | 1416254.0 NRC Report How to search |
| Additional Nrc Report Numbers | 1416456.0 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 0.01 |
| Intentional Release | 0.0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | Yes |
| Num Emp Injuries | 0 |
| Num Contr Injuries | 1 |
| Num Er Injuries | 0 |
| Num Worker Injuries | 0 |
| Num Gp Injuries | 0 |
| Injure | 1 |
| Ignite Ind | Yes |
| How Extinguished | Other |
| How Extinguished Other Detail | See Part H - Narrative |
| Gas Consumed By Fire In Mcf | 0.01 |
| Explode Ind | No |
| Num Pub Evacuated | 0.0 |
| Communication State Fed Ind | Yes |
| Party Initiated Communication | Operator |
| Federal | No |
| Location Type | Public Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Exposed Due To Excavation |
| Depth Of Cover | 48.0 |
| Other Underground Facilities | No |
| Crossing | No |
| Pipe Facility Type | Investor Owned |
| System Part Involved | Main |
| Installation Year | 1974.0 |
| Pipe Diameter | 4.0 |
| Pipe Specification | Api 5l |
| Pipe Manufacturer | Unknown |
| Material Involved | Steel |
| Steel Seam Type | Seamless |
| Wt Steel | 0.156 |
| Release Type | Other |
| Release Type Details | See Part H - Narrative |
| Class Location Type | Class 3 Location |
| Est Cost Oper Paid | 0.0 |
| Est Cost Prop Damage | 0.0 |
| Est Cost Emergency | 1653.0 |
| Est Cost Other | 0.0 |
| Gas Cost In Mcf | 1.37 |
| Est Cost Unintentional Release | 0.0 |
| Est Cost Intentional Release | 0.0 |
| Prpty | 1653.0 |
| Commercial Affected | 0.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 0.0 |
| Num Persons Hosp Not Ovnght | 1.0 |
| Num Injured Treated By Emt | 0.0 |
| Num Resident Building Affctd | 0.0 |
| Num Business Building Affctd | 0.0 |
| Accident Psig | 0.0 |
| Normal Psig | 0.0 |
| Mop Psig | 0.0 |
| Mop Cfr Section | 192.619(A)(2) View CFR 49 §192 |
| Maop Established Date | 1974-03-08 00:00:00 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Gas Odorized System Type | Other |
| Gas Odorized Sys Other Detail | See Part H - Narrative |
| Gas Odorized Lvl Not Msrd Ind | Yes |
| Scada In Place Ind | No |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Contractor Working For The Operator |
| Investigation Status | No, the facility was not monitored by a controller(s) at the time of the incident |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | Yes |
| Num Contractors Tested | 10 |
| Num Contractors Failed | 0 |
| Cause | Incorrect Operation |
| Cause Details | Other Incorrect Operation |
| Operation Type | Other Incorrect Operation |
| Operation Details | See Part H - Narrative |
| Related Failure Follow Ind | Yes |
| Category Type | Decommissioning |
| Operator Qualification Ind | Yes |
| Qualified Individuals | Yes, They Were Qualified For The Task(S) |
| Preparer Name | R**** M******* |
| Preparer Title | Principal Compliance Engineer |
| Preparer Email | R*******@s*********.com |
| Preparer Telephone | 4045843733 |
| Preparer Fax | (404) 584-4710 |
| Authorizer Name | L****** Q****** |
| Authorizer Title | Director Compliance And Prm |
| Authorizer Telephone | (630) 388-2316 |
| Authorizer Email | L******@s*********.com |
| Narrative | On november 12, 2024, agl contractor employees (sec) were working to isolate and retire approximately 1,340 feet of 4-inch steel main along highway 78, from n crestview drive sw to summit chase drive sw near grayson, ga in gwinnett county. The operation involved a cross-compression activity to remove the natural gas from the isolated section of the main and inject it back into the active system. After completing this cross-compression activity, a venturi was set up to remove any remaining residual gas from the retired section of the main before sealing and capping the ends. An investigation revealed a miscommunication among the contractor employees regarding the completion and confirmation of the removal of the residual gas. This miscommunication occurred before the welder and his helper entered the excavation to perform welding operations. Approximately five minutes into the welding process of installing a weld-over on the control fitting used to isolate the main, a flash fire ignited due to the remaining residual gas in the retired section of the main. Both contractor employees were wearing their personal protective equipment (ppe); however, the helper had removed his gloves and helmet to drink some water when the flash fire occurred, resulting in burns to his face and hands. Both contractor employees were taken to separate hospitals. One contractor employee was treated and released, while the other was admitted to the hospital the following morning. At that point, agl notified the national response center (nrc) under nrc report number 1416254. An additional nrc report number 1416456 was created for the same event following a supplemental call to the nrc to update the initial telephonic notice. |
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