Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2023-12-06 — GA
Operator
Atlanta Gas Light Co
Cause
Excavation Issue
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$3,480
Incident datetime
2023-12-06 00:00 UTC
Report number
Location
GA, FULTON
Narrative
On november 8, 2023, at approximately 15:53 hours, a third-party party excavator (washington communication) struck and damaged an atlanta gas light company (aglc) 6-inch steel gas main while directionally boring to install electric conduit lines at the intersection of northside drive and old powers ferry road, sandy springs, ga. Upon arrival, aglc personnel secured the area and monitored the surrounding area for gas migration. Based on a field assessment of conditions surrounding the location of the incident and to not shut down a large metro area should an existing valve north of the damage been used in conjunction with the other two valves operated, a decision was made to squeeze the pipe at a safe distance north of the damage. Upon excavating to expose the existing pipe, it was discovered that the pipe was approximately 66 inches deep and under approximately 36-inches of asphalt, gas was shut-off to the damaged area on november 8, 2023, at 23:54 hours by operating two (2) valves and performing one (1) squeeze off operation. A locate request was made on november 2, 2023, by washington communication (excavator) to locate "w northside dr, old powers ferry rd, locate the entire intersection for 50ft in all directionsboth sides of the rd and within the r/o/w on both sides of the st, this is a 3 leg int, it does notinclude locating along riverview rd nw". Aglc facilities were marked by usic locating company to satisfy this request on november 6, 2023, at 11:26 hours. On november 8, 2023, at 13:00 hours, usic remarked aglc's facilities as requested by the excavator due to facility markings no longer being visible. Investigation of the site revealed that the locate marks were accurate at the point of damage. Had the excavator potholed, it would have determined the location of the gas main. Once the damaged section of main was exposed and all the variables were obtained to perform the gas loss calculation, it was identified that the amount of gas released exceeded the threshold for reporting and the national response center (nrc) was notified at that time on november 9, 2023, at 18:49 hours where an initial nrc report number 1383916 was created. An additional nrc report number 1384000 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
2023-12-06 00:00:00
Iyear
2023.0
Report Number
20230073.0
Supplemental Number
39481.0
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
Northside Drive Nw At Old Powers Ferry Road
Location City Name
Sandy Springs
Location County Name
Fulton
Location State Abbreviation
GA
Location Postal Code
30339.0
Location Latitude
33.901791
Location Longitude
-84.427496
Flow Cont Key Crit Ind
Yes
Flow Cont Squeeze Off Ind
Yes
Nrc Rpt Num
1383916.0
Additional Nrc Report Numbers
1384000.0
Commodity Released Type
Natural Gas
Unintentional Release
17423.0
Intentional Release
0.0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
No
Num Pub Evacuated
0.0
Federal
No
Location Type
Public Property
Incident Area Type
Underground
Incident Area Subtype
Under Pavement
Depth Of Cover
66.0
Other Underground Facilities
No
Crossing
No
Pipe Facility Type
Investor Owned
System Part Involved
Main
Installation Year
1968.0
Pipe Diameter
6.0
Pipe Specification
Api 5l
Pipe Manufacturer
Unknown
Material Involved
Steel
Steel Seam Type
Longitudinal Erw - Unknown Frequency
Wt Steel
0.188
Release Type
Mechanical Puncture
Puncture Axial
2.0
Puncture Circum
2.5
Class Location Type
Class 3 Location
Est Cost Oper Paid
2734.0
Est Cost Prop Damage
3480.0
Est Cost Emergency
75278.0
Est Cost Other
0.0
Gas Cost In Mcf
1.83
Est Cost Unintentional Release
31884.0
Est Cost Intentional Release
0.0
Prpty
113376.0
Commercial Affected
8.0
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
230.0
Normal Psig
230.0
Mop Psig
300.0
Mop Cfr Section
192.619(A)(4)
Maop Established Date
1968-03-13 00:00:00
Accident Pressure
Pressure Did Not Exceed Maop
Gas Odorized System Type
Injection Pump
Gas Odorized Level
15.5
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
No
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
Joint Trench Ind
No
Cross Bore Ind
No
Depth Of Grade
> 36�
Excavator Type
Contractor
Excavator Equipment
Directional Drilling
Work Performed
Electric
One Call Notified Ind
Yes
One Call Ticket Num
231102000000.0
White Lined Ind
Unknown
Locator Type
Contract Locator
Visible Marks
Yes
Service Interruption
Yes
Service Interruption Hours
24.0
Root Cause Category
Excavation Issue
Root Cause Type
Excavator Dug Prior To Verifying Marks By Test-Hole (Pothole)
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*** S*****
Authorizer Title
Director Compliance And Qa
Authorizer Telephone
(404) 584-4910
Authorizer Email
R******@s*********.com
Narrative
On november 8, 2023, at approximately 15:53 hours, a third-party party excavator (washington communication) struck and damaged an atlanta gas light company (aglc) 6-inch steel gas main while directionally boring to install electric conduit lines at the intersection of northside drive and old powers ferry road, sandy springs, ga. Upon arrival, aglc personnel secured the area and monitored the surrounding area for gas migration. Based on a field assessment of conditions surrounding the location of the incident and to not shut down a large metro area should an existing valve north of the damage been used in conjunction with the other two valves operated, a decision was made to squeeze the pipe at a safe distance north of the damage. Upon excavating to expose the existing pipe, it was discovered that the pipe was approximately 66 inches deep and under approximately 36-inches of asphalt, gas was shut-off to the damaged area on november 8, 2023, at 23:54 hours by operating two (2) valves and performing one (1) squeeze off operation. A locate request was made on november 2, 2023, by washington communication (excavator) to locate "w northside dr, old powers ferry rd, locate the entire intersection for 50ft in all directionsboth sides of the rd and within the r/o/w on both sides of the st, this is a 3 leg int, it does notinclude locating along riverview rd nw". Aglc facilities were marked by usic locating company to satisfy this request on november 6, 2023, at 11:26 hours. On november 8, 2023, at 13:00 hours, usic remarked aglc's facilities as requested by the excavator due to facility markings no longer being visible. Investigation of the site revealed that the locate marks were accurate at the point of damage. Had the excavator potholed, it would have determined the location of the gas main. Once the damaged section of main was exposed and all the variables were obtained to perform the gas loss calculation, it was identified that the amount of gas released exceeded the threshold for reporting and the national response center (nrc) was notified at that time on november 9, 2023, at 18:49 hours where an initial nrc report number 1383916 was created. An additional nrc report number 1384000 was created for the same event after a supplemental call was placed with the nrc to update the initial telephonic notice.
| Report Received Date | 2023-12-06 00:00:00 |
|---|---|
| Iyear | 2023.0 |
| Report Number | 20230073.0 |
| Supplemental Number | 39481.0 |
| 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 | Northside Drive Nw At Old Powers Ferry Road |
| Location City Name | Sandy Springs |
| Location County Name | Fulton |
| Location State Abbreviation | GA |
| Location Postal Code | 30339.0 |
| Location Latitude | 33.901791 Google Maps OpenStreetMap |
| Location Longitude | -84.427496 Google Maps OpenStreetMap |
| Flow Cont Key Crit Ind | Yes |
| Flow Cont Squeeze Off Ind | Yes |
| Nrc Rpt Num | 1383916.0 NRC Report How to search |
| Additional Nrc Report Numbers | 1384000.0 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 17423.0 |
| Intentional Release | 0.0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | No |
| Num Pub Evacuated | 0.0 |
| Federal | No |
| Location Type | Public Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Pavement |
| Depth Of Cover | 66.0 |
| Other Underground Facilities | No |
| Crossing | No |
| Pipe Facility Type | Investor Owned |
| System Part Involved | Main |
| Installation Year | 1968.0 |
| Pipe Diameter | 6.0 |
| Pipe Specification | Api 5l |
| Pipe Manufacturer | Unknown |
| Material Involved | Steel |
| Steel Seam Type | Longitudinal Erw - Unknown Frequency |
| Wt Steel | 0.188 |
| Release Type | Mechanical Puncture |
| Puncture Axial | 2.0 |
| Puncture Circum | 2.5 |
| Class Location Type | Class 3 Location |
| Est Cost Oper Paid | 2734.0 |
| Est Cost Prop Damage | 3480.0 |
| Est Cost Emergency | 75278.0 |
| Est Cost Other | 0.0 |
| Gas Cost In Mcf | 1.83 |
| Est Cost Unintentional Release | 31884.0 |
| Est Cost Intentional Release | 0.0 |
| Prpty | 113376.0 |
| Commercial Affected | 8.0 |
| 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 | 230.0 |
| Normal Psig | 230.0 |
| Mop Psig | 300.0 |
| Mop Cfr Section | 192.619(A)(4) View CFR 49 §192 |
| Maop Established Date | 1968-03-13 00:00:00 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Gas Odorized System Type | Injection Pump |
| Gas Odorized Level | 15.5 |
| 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 | No |
| 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 |
| Joint Trench Ind | No |
| Cross Bore Ind | No |
| Depth Of Grade | > 36� |
| Excavator Type | Contractor |
| Excavator Equipment | Directional Drilling |
| Work Performed | Electric |
| One Call Notified Ind | Yes |
| One Call Ticket Num | 231102000000.0 |
| White Lined Ind | Unknown |
| Locator Type | Contract Locator |
| Visible Marks | Yes |
| Service Interruption | Yes |
| Service Interruption Hours | 24.0 |
| Root Cause Category | Excavation Issue |
| Root Cause Type | Excavator Dug Prior To Verifying Marks By Test-Hole (Pothole) |
| 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*** S***** |
| Authorizer Title | Director Compliance And Qa |
| Authorizer Telephone | (404) 584-4910 |
| Authorizer Email | R******@s*********.com |
| Narrative | On november 8, 2023, at approximately 15:53 hours, a third-party party excavator (washington communication) struck and damaged an atlanta gas light company (aglc) 6-inch steel gas main while directionally boring to install electric conduit lines at the intersection of northside drive and old powers ferry road, sandy springs, ga. Upon arrival, aglc personnel secured the area and monitored the surrounding area for gas migration. Based on a field assessment of conditions surrounding the location of the incident and to not shut down a large metro area should an existing valve north of the damage been used in conjunction with the other two valves operated, a decision was made to squeeze the pipe at a safe distance north of the damage. Upon excavating to expose the existing pipe, it was discovered that the pipe was approximately 66 inches deep and under approximately 36-inches of asphalt, gas was shut-off to the damaged area on november 8, 2023, at 23:54 hours by operating two (2) valves and performing one (1) squeeze off operation. A locate request was made on november 2, 2023, by washington communication (excavator) to locate "w northside dr, old powers ferry rd, locate the entire intersection for 50ft in all directionsboth sides of the rd and within the r/o/w on both sides of the st, this is a 3 leg int, it does notinclude locating along riverview rd nw". Aglc facilities were marked by usic locating company to satisfy this request on november 6, 2023, at 11:26 hours. On november 8, 2023, at 13:00 hours, usic remarked aglc's facilities as requested by the excavator due to facility markings no longer being visible. Investigation of the site revealed that the locate marks were accurate at the point of damage. Had the excavator potholed, it would have determined the location of the gas main. Once the damaged section of main was exposed and all the variables were obtained to perform the gas loss calculation, it was identified that the amount of gas released exceeded the threshold for reporting and the national response center (nrc) was notified at that time on november 9, 2023, at 18:49 hours where an initial nrc report number 1383916 was created. An additional nrc report number 1384000 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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