Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2023-10-20 — GA
Operator
Atlanta Gas Light Co
Cause
Excavation Issue
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$87,500
Incident datetime
2023-10-20 00:00 UTC
Report number
Location
GA, FULTON
Narrative
A third-party party excavator (cable east) struck and damaged an atlanta gas light company (aglc) 4-inch plastic gas main while directionally boring to install traffic signal conduit lines near 2049 sylvan road sw, atlanta. Escaping gas from the damage was ignited by an unknown ignition source and a subsequent fire occurred at the street resulting in significant property damage. At least one vehicle as well as a tractor and the directional boring rig were damaged in the fire; there was also heat damage to a large commercial sign and a diesel pump at a nearby chevron gasoline station. Upon arrival, aglc personnel secured the area and monitored the surrounding area for gas. Gas was shut-off to the damaged area at 12:06 pm by operating two (2) valves and performing one (1) squeeze off operation. A locate request was made on september 6, 2023, by cable east (excavator) to "locate the intersection of sr 166 ramps east bound off & on and sylvan rd sw 200' in all direction entire row". Aglc facilities were marked by stake center locating to satisfy this request on september 20, 2023, at 10:19 am. Investigation of the site revealed that the locate marks were not accurate at the point of damage; the nearest locate mark to where the 4-inch plastic main was damaged was approximately seven (7) feet away. Because the excavator did not verify the location of aglc facilities by pot holing and instead blindly crossed the marks on the ground which ran parallel to the actual location of the gas main, the gas main was damaged. Had the excavator potholed, it would have determined the location of the main was not consistent with the marks on the ground at the point of crossing and taken steps to determine the actual location of the gas main. Additional nrc report number 1379789 was created for the same event after a supplemental call was placed with the nrc to update the initial telephonic notice.
Detailed record list
Report Received Date
2023-10-20 00:00:00
Iyear
2023.0
Report Number
20230059.0
Supplemental Number
38679.0
Report Type
Original 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
Yes
Location Street Address
2049 Sylvan Road Sw
Location City Name
Atlanta
Location County Name
Fulton
Location State Abbreviation
GA
Location Postal Code
30310.0
Location Latitude
33.698291
Location Longitude
-84.418228
Flow Cont Key Crit Ind
Yes
Flow Cont Main Valve Ind
Yes
Flow Cont Squeeze Off Ind
Yes
Nrc Rpt Num
1379609.0
Additional Nrc Report Numbers
1379789.0
Commodity Released Type
Natural Gas
Unintentional Release
500.0
Intentional Release
0.0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
Yes
How Extinguished
Local/state/federal Emergency Responder
Gas Consumed By Fire In Mcf
500
Explode Ind
No
Num Pub Evacuated
3.0
Federal
No
Location Type
Public Property
Incident Area Type
Underground
Incident Area Subtype
Under Pavement
Depth Of Cover
48.0
Other Underground Facilities
No
Crossing
No
Pipe Facility Type
Investor Owned
System Part Involved
Main
Installation Year
2001.0
Pipe Diameter
4.0
Pipe Specification
Astm D2513
Pipe Manufacturer
Uponor
Material Involved
Plastic
Plastic Type
Polyethylene (Pe)
Plastic Sdr
11.5
Material Pe Pipe Code
2406
Release Type
Mechanical Puncture
Puncture Axial
3.7
Puncture Circum
3.7
Class Location Type
Class 3 Location
Est Cost Oper Paid
300000.0
Est Cost Prop Damage
87500.0
Est Cost Emergency
68196.0
Est Cost Other
0.0
Gas Cost In Mcf
2.815
Est Cost Unintentional Release
1408.0
Est Cost Intentional Release
0.0
Prpty
457104.0
Commercial Affected
5.0
Industrial Affected
0.0
Residences Affected
0.0
Num Persons Hosp Not Ovnght
0.0
Num Injured Treated By Emt
0.0
Num Resident Building Affctd
0.0
Num Business Building Affctd
0.0
Accident Psig
40.0
Normal Psig
45.0
Mop Psig
60.0
Mop Cfr Section
192.619(A)(2)
Maop Established Date
2001-04-16 00:00:00
Accident Pressure
Pressure Did Not Exceed Maop
Gas Odorized System Type
Injection Pump
Gas Odorized Level
5.3
Scada In Place Ind
No
Accident Identifier
Notification From Emergency Responder
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
1
Num Contractors Failed
0
Cause
Excavation Damage
Cause Details
Excavation Damage By Third Party
Ex Party Type
Excavation Damage By Third Party
Prior Notification Ind
Yes
One Call System Ind
Yes
State Law Exempt Ind
No
Notify Cga Dirt
Yes
Public Row Ind
Yes
Public Subtype
City Street
Excavator Type
Contractor
Excavator Equipment
Directional Drilling
Work Performed
Traffic Signal
One Call Notified Ind
Yes
One Call Ticket Num
230731000000.0
Locator Type
Contract Locator
Visible Marks
Yes
Service Interruption
Yes
Service Interruption Hours
24.0
Root Cause Category
Excavation Issue
Root Cause Type
Improper Excavation Practice Not Listed Above
Io Follow Procedure Ind
Yes
Preparer Name
R**** M*******
Preparer Title
Principal Compliance Engineer
Preparer Email
R*******@s*********.com
Preparer Telephone
(404) 584-3733
Preparer Fax
(404) 584-4710
Authorizer Name
R*** L***
Authorizer Title
Director Compliance And Prm
Authorizer Telephone
(404) 584-3552
Authorizer Email
R****@s*********.com
Narrative
A third-party party excavator (cable east) struck and damaged an atlanta gas light company (aglc) 4-inch plastic gas main while directionally boring to install traffic signal conduit lines near 2049 sylvan road sw, atlanta. Escaping gas from the damage was ignited by an unknown ignition source and a subsequent fire occurred at the street resulting in significant property damage. At least one vehicle as well as a tractor and the directional boring rig were damaged in the fire; there was also heat damage to a large commercial sign and a diesel pump at a nearby chevron gasoline station. Upon arrival, aglc personnel secured the area and monitored the surrounding area for gas. Gas was shut-off to the damaged area at 12:06 pm by operating two (2) valves and performing one (1) squeeze off operation. A locate request was made on september 6, 2023, by cable east (excavator) to "locate the intersection of sr 166 ramps east bound off & on and sylvan rd sw 200' in all direction entire row". Aglc facilities were marked by stake center locating to satisfy this request on september 20, 2023, at 10:19 am. Investigation of the site revealed that the locate marks were not accurate at the point of damage; the nearest locate mark to where the 4-inch plastic main was damaged was approximately seven (7) feet away. Because the excavator did not verify the location of aglc facilities by pot holing and instead blindly crossed the marks on the ground which ran parallel to the actual location of the gas main, the gas main was damaged. Had the excavator potholed, it would have determined the location of the main was not consistent with the marks on the ground at the point of crossing and taken steps to determine the actual location of the gas main. Additional nrc report number 1379789 was created for the same event after a supplemental call was placed with the nrc to update the initial telephonic notice.
| Report Received Date | 2023-10-20 00:00:00 |
|---|---|
| Iyear | 2023.0 |
| Report Number | 20230059.0 |
| Supplemental Number | 38679.0 |
| Report Type | Original 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 | Yes |
| Location Street Address | 2049 Sylvan Road Sw |
| Location City Name | Atlanta |
| Location County Name | Fulton |
| Location State Abbreviation | GA |
| Location Postal Code | 30310.0 |
| Location Latitude | 33.698291 Google Maps OpenStreetMap |
| Location Longitude | -84.418228 Google Maps OpenStreetMap |
| Flow Cont Key Crit Ind | Yes |
| Flow Cont Main Valve Ind | Yes |
| Flow Cont Squeeze Off Ind | Yes |
| Nrc Rpt Num | 1379609.0 NRC Report How to search |
| Additional Nrc Report Numbers | 1379789.0 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 500.0 |
| Intentional Release | 0.0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | Yes |
| How Extinguished | Local/state/federal Emergency Responder |
| Gas Consumed By Fire In Mcf | 500 |
| Explode Ind | No |
| Num Pub Evacuated | 3.0 |
| Federal | No |
| Location Type | Public Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Pavement |
| Depth Of Cover | 48.0 |
| Other Underground Facilities | No |
| Crossing | No |
| Pipe Facility Type | Investor Owned |
| System Part Involved | Main |
| Installation Year | 2001.0 |
| Pipe Diameter | 4.0 |
| Pipe Specification | Astm D2513 |
| Pipe Manufacturer | Uponor |
| Material Involved | Plastic |
| Plastic Type | Polyethylene (Pe) |
| Plastic Sdr | 11.5 |
| Material Pe Pipe Code | 2406 |
| Release Type | Mechanical Puncture |
| Puncture Axial | 3.7 |
| Puncture Circum | 3.7 |
| Class Location Type | Class 3 Location |
| Est Cost Oper Paid | 300000.0 |
| Est Cost Prop Damage | 87500.0 |
| Est Cost Emergency | 68196.0 |
| Est Cost Other | 0.0 |
| Gas Cost In Mcf | 2.815 |
| Est Cost Unintentional Release | 1408.0 |
| Est Cost Intentional Release | 0.0 |
| Prpty | 457104.0 |
| Commercial Affected | 5.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 0.0 |
| Num Persons Hosp Not Ovnght | 0.0 |
| Num Injured Treated By Emt | 0.0 |
| Num Resident Building Affctd | 0.0 |
| Num Business Building Affctd | 0.0 |
| Accident Psig | 40.0 |
| Normal Psig | 45.0 |
| Mop Psig | 60.0 |
| Mop Cfr Section | 192.619(A)(2) View CFR 49 §192 |
| Maop Established Date | 2001-04-16 00:00:00 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Gas Odorized System Type | Injection Pump |
| Gas Odorized Level | 5.3 |
| Scada In Place Ind | No |
| Accident Identifier | Notification From Emergency Responder |
| 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 | 1 |
| Num Contractors Failed | 0 |
| Cause | Excavation Damage |
| Cause Details | Excavation Damage By Third Party |
| Ex Party Type | Excavation Damage By Third Party |
| Prior Notification Ind | Yes |
| One Call System Ind | Yes |
| State Law Exempt Ind | No |
| Notify Cga Dirt | Yes |
| Public Row Ind | Yes |
| Public Subtype | City Street |
| Excavator Type | Contractor |
| Excavator Equipment | Directional Drilling |
| Work Performed | Traffic Signal |
| One Call Notified Ind | Yes |
| One Call Ticket Num | 230731000000.0 |
| Locator Type | Contract Locator |
| Visible Marks | Yes |
| Service Interruption | Yes |
| Service Interruption Hours | 24.0 |
| Root Cause Category | Excavation Issue |
| Root Cause Type | Improper Excavation Practice Not Listed Above |
| Io Follow Procedure Ind | Yes |
| Preparer Name | R**** M******* |
| Preparer Title | Principal Compliance Engineer |
| Preparer Email | R*******@s*********.com |
| Preparer Telephone | (404) 584-3733 |
| Preparer Fax | (404) 584-4710 |
| Authorizer Name | R*** L*** |
| Authorizer Title | Director Compliance And Prm |
| Authorizer Telephone | (404) 584-3552 |
| Authorizer Email | R****@s*********.com |
| Narrative | A third-party party excavator (cable east) struck and damaged an atlanta gas light company (aglc) 4-inch plastic gas main while directionally boring to install traffic signal conduit lines near 2049 sylvan road sw, atlanta. Escaping gas from the damage was ignited by an unknown ignition source and a subsequent fire occurred at the street resulting in significant property damage. At least one vehicle as well as a tractor and the directional boring rig were damaged in the fire; there was also heat damage to a large commercial sign and a diesel pump at a nearby chevron gasoline station. Upon arrival, aglc personnel secured the area and monitored the surrounding area for gas. Gas was shut-off to the damaged area at 12:06 pm by operating two (2) valves and performing one (1) squeeze off operation. A locate request was made on september 6, 2023, by cable east (excavator) to "locate the intersection of sr 166 ramps east bound off & on and sylvan rd sw 200' in all direction entire row". Aglc facilities were marked by stake center locating to satisfy this request on september 20, 2023, at 10:19 am. Investigation of the site revealed that the locate marks were not accurate at the point of damage; the nearest locate mark to where the 4-inch plastic main was damaged was approximately seven (7) feet away. Because the excavator did not verify the location of aglc facilities by pot holing and instead blindly crossed the marks on the ground which ran parallel to the actual location of the gas main, the gas main was damaged. Had the excavator potholed, it would have determined the location of the main was not consistent with the marks on the ground at the point of crossing and taken steps to determine the actual location of the gas main. Additional nrc report number 1379789 was created for the same event after a supplemental call was placed with the nrc to update the initial telephonic notice. |
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