Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2025-03-10 — PA
Operator
Philadelphia Gas Works
Cause
Locating Issue
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$39,941
Incident datetime
2025-03-10 00:00 UTC
Report number
Location
PA, PA
Narrative
On thursday february 27th 2025 at approximately 8:15am pgw's 2nd party contractor (danella) was excavating with equipment on the 1700 block of w. Olney ave. (philadelphia, pa 19141) and pulled a 6 inch cast iron gas main stub piece that was connected to a 20 inch cast iron gas main. The 20 inch cast iron main failed at the connection to the 6" cast iron main resulting in a 30 inch by 12 inch hole in the 20 inch cast iron main and causing a natural gas leak. Pgw emergency personnel responded to the incident and shut two main valves to stop the gas leak by 9:47am on 2/27/2025. The section of 20" cast iron main damaged was then permanently abandoned by 4:40am on 2/28/2025. The location of the 1911 6" cast iron stub piece damaged was not accurately shown on pgw maps. These historic as built records were off by approximately ten feet. The line hit was not within the tolerance zone of where a pgw structure would have been expected. Note: the estimated evacuees reported in part a #22 is not based on actual evacuees but an estimate mainly based on building occupancy. Pgw did not evacuate any of the general public because the gas rupture was in the middle of the street and ventilating to the atmosphere. The local buildings self evacuated out of an abundance of caution.
Detailed record list
Report Received Date
2025-03-10 00:00:00
Iyear
2025.0
Report Number
20250008.0
Supplemental Number
40834.0
Report Type
Supplemental
Operator Id
15469
Name
Philadelphia Gas Works
Operator Street Address
800 W. Montgomery Avenue
Operator City Name
Philadelphia
Operator State Abbreviation
PA
Operator Postal Code
19122.0
Time Zone
Eastern
Daylight Savings Ind
No
Location Street Address
1700 W. Olney Ave
Location City Name
Philadelphia
Location County Name
Pa
Location State Abbreviation
PA
Location Postal Code
19141.0
Location Latitude
40.03915
Location Longitude
-75.15124
Flow Cont Key Crit Ind
Yes
Nrc Rpt Num
1425094.0
Additional Nrc Report Numbers
1425176.0
Commodity Released Type
Natural Gas
Unintentional Release
4342.0
Intentional Release
0.0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
No
Num Pub Evacuated
2431.0
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
37.0
Other Underground Facilities
No
Crossing
No
Pipe Facility Type
Municipally Owned
System Part Involved
Main
Installation Year
1911.0
Manufactured Year
1911.0
Pipe Diameter
20.0
Pipe Specification
Unknown
Pipe Manufacturer
Unknown
Material Involved
Cast/wrought Iron
Release Type
Mechanical Puncture
Puncture Axial
30.0
Puncture Circum
12.0
Class Location Type
Class 4 Location
Est Cost Oper Paid
0.0
Est Cost Prop Damage
39941.0
Est Cost Emergency
35425.0
Est Cost Other
0.0
Gas Cost In Mcf
3.462
Est Cost Unintentional Release
15032.0
Est Cost Intentional Release
0.0
Prpty
90398.0
Commercial Affected
0.0
Industrial Affected
0.0
Residences Affected
1.0
Num Persons Hosp Not Ovnght
0.0
Num Injured Treated By Emt
0.0
Num Resident Building Affctd
1.0
Num Business Building Affctd
1.0
Accident Psig
19.0
Normal Psig
19.0
Mop Psig
35.0
Mop Cfr Section
192.621 M
Maop Established Date
1911-01-01 00:00:00
Accident Pressure
Pressure Did Not Exceed Maop
Gas Odorized System Type
Combination Of Odorization Types
Gas Odorized Level
9.2
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
Yes
Scada Conf Ind
Yes
Accident Identifier
Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Or Pack Calculations)
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
2nd party damage not related to controller actions.
Employee Drug Test Ind
Yes
Num Employees Tested
1
Num Employees Failed
0
Contractor Drug Test Ind
Yes
Num Contractors Tested
3
Num Contractors Failed
0
Cause
Excavation Damage
Cause Details
Excavation Damage By Operator's Contractor (Second Party)
Ex Party Type
Excavation Damage By Operator's Contractor (Second Party)
Prior Notification Ind
Yes
One Call System Ind
Yes
Contractor Ind
Yes
State Law Exempt Ind
No
Notify Cga Dirt
No
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
Backhoe/trackhoe
Work Performed
Natural Gas
One Call Notified Ind
Yes
One Call Ticket Num
20250300245.0
White Lined Ind
Yes
Locator Type
Facility Owner
Visible Marks
Yes
Service Interruption
Yes
Service Interruption Hours
21.0
Root Cause Category
Locating Issue
Root Cause Type
Facility Not Marked Due To Incorrect Facility Records/maps
Excvtn Dmg Op Contractor Ind
Yes
Preparer Name
J***** R H********
Preparer Title
Vp Field Operations
Preparer Email
J***************@p******.com
Preparer Telephone
2672496768
Local Contact Name
J***** R H********
Local Contact Email
J***************@p******.com
Local Contact Telephone
2672496768
Authorizer Name
J***** R H********
Authorizer Title
Vp Field Operations
Authorizer Telephone
2672496768
Authorizer Email
J***************@p******.com
Narrative
On thursday february 27th 2025 at approximately 8:15am pgw's 2nd party contractor (danella) was excavating with equipment on the 1700 block of w. Olney ave. (philadelphia, pa 19141) and pulled a 6 inch cast iron gas main stub piece that was connected to a 20 inch cast iron gas main. The 20 inch cast iron main failed at the connection to the 6" cast iron main resulting in a 30 inch by 12 inch hole in the 20 inch cast iron main and causing a natural gas leak. Pgw emergency personnel responded to the incident and shut two main valves to stop the gas leak by 9:47am on 2/27/2025. The section of 20" cast iron main damaged was then permanently abandoned by 4:40am on 2/28/2025. The location of the 1911 6" cast iron stub piece damaged was not accurately shown on pgw maps. These historic as built records were off by approximately ten feet. The line hit was not within the tolerance zone of where a pgw structure would have been expected. Note: the estimated evacuees reported in part a #22 is not based on actual evacuees but an estimate mainly based on building occupancy. Pgw did not evacuate any of the general public because the gas rupture was in the middle of the street and ventilating to the atmosphere. The local buildings self evacuated out of an abundance of caution.
| Report Received Date | 2025-03-10 00:00:00 |
|---|---|
| Iyear | 2025.0 |
| Report Number | 20250008.0 |
| Supplemental Number | 40834.0 |
| Report Type | Supplemental |
| Operator Id | 15469 PHMSA Enforcement |
| Name | Philadelphia Gas Works |
| Operator Street Address | 800 W. Montgomery Avenue |
| Operator City Name | Philadelphia |
| Operator State Abbreviation | PA |
| Operator Postal Code | 19122.0 |
| Time Zone | Eastern |
| Daylight Savings Ind | No |
| Location Street Address | 1700 W. Olney Ave |
| Location City Name | Philadelphia |
| Location County Name | Pa |
| Location State Abbreviation | PA |
| Location Postal Code | 19141.0 |
| Location Latitude | 40.03915 Google Maps OpenStreetMap |
| Location Longitude | -75.15124 Google Maps OpenStreetMap |
| Flow Cont Key Crit Ind | Yes |
| Nrc Rpt Num | 1425094.0 NRC Report How to search |
| Additional Nrc Report Numbers | 1425176.0 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 4342.0 |
| Intentional Release | 0.0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | No |
| Num Pub Evacuated | 2431.0 |
| 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 | 37.0 |
| Other Underground Facilities | No |
| Crossing | No |
| Pipe Facility Type | Municipally Owned |
| System Part Involved | Main |
| Installation Year | 1911.0 |
| Manufactured Year | 1911.0 |
| Pipe Diameter | 20.0 |
| Pipe Specification | Unknown |
| Pipe Manufacturer | Unknown |
| Material Involved | Cast/wrought Iron |
| Release Type | Mechanical Puncture |
| Puncture Axial | 30.0 |
| Puncture Circum | 12.0 |
| Class Location Type | Class 4 Location |
| Est Cost Oper Paid | 0.0 |
| Est Cost Prop Damage | 39941.0 |
| Est Cost Emergency | 35425.0 |
| Est Cost Other | 0.0 |
| Gas Cost In Mcf | 3.462 |
| Est Cost Unintentional Release | 15032.0 |
| Est Cost Intentional Release | 0.0 |
| Prpty | 90398.0 |
| Commercial Affected | 0.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 1.0 |
| Num Persons Hosp Not Ovnght | 0.0 |
| Num Injured Treated By Emt | 0.0 |
| Num Resident Building Affctd | 1.0 |
| Num Business Building Affctd | 1.0 |
| Accident Psig | 19.0 |
| Normal Psig | 19.0 |
| Mop Psig | 35.0 |
| Mop Cfr Section | 192.621 M View CFR 49 §192 |
| Maop Established Date | 1911-01-01 00:00:00 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Gas Odorized System Type | Combination Of Odorization Types |
| Gas Odorized Level | 9.2 |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | Yes |
| Scada Conf Ind | Yes |
| Accident Identifier | Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Or Pack Calculations) |
| 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 | 2nd party damage not related to controller actions. |
| Employee Drug Test Ind | Yes |
| Num Employees Tested | 1 |
| Num Employees Failed | 0 |
| Contractor Drug Test Ind | Yes |
| Num Contractors Tested | 3 |
| Num Contractors Failed | 0 |
| Cause | Excavation Damage |
| Cause Details | Excavation Damage By Operator's Contractor (Second Party) |
| Ex Party Type | Excavation Damage By Operator's Contractor (Second Party) |
| Prior Notification Ind | Yes |
| One Call System Ind | Yes |
| Contractor Ind | Yes |
| State Law Exempt Ind | No |
| Notify Cga Dirt | No |
| 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 | Backhoe/trackhoe |
| Work Performed | Natural Gas |
| One Call Notified Ind | Yes |
| One Call Ticket Num | 20250300245.0 |
| White Lined Ind | Yes |
| Locator Type | Facility Owner |
| Visible Marks | Yes |
| Service Interruption | Yes |
| Service Interruption Hours | 21.0 |
| Root Cause Category | Locating Issue |
| Root Cause Type | Facility Not Marked Due To Incorrect Facility Records/maps |
| Excvtn Dmg Op Contractor Ind | Yes |
| Preparer Name | J***** R H******** |
| Preparer Title | Vp Field Operations |
| Preparer Email | J***************@p******.com |
| Preparer Telephone | 2672496768 |
| Local Contact Name | J***** R H******** |
| Local Contact Email | J***************@p******.com |
| Local Contact Telephone | 2672496768 |
| Authorizer Name | J***** R H******** |
| Authorizer Title | Vp Field Operations |
| Authorizer Telephone | 2672496768 |
| Authorizer Email | J***************@p******.com |
| Narrative | On thursday february 27th 2025 at approximately 8:15am pgw's 2nd party contractor (danella) was excavating with equipment on the 1700 block of w. Olney ave. (philadelphia, pa 19141) and pulled a 6 inch cast iron gas main stub piece that was connected to a 20 inch cast iron gas main. The 20 inch cast iron main failed at the connection to the 6" cast iron main resulting in a 30 inch by 12 inch hole in the 20 inch cast iron main and causing a natural gas leak. Pgw emergency personnel responded to the incident and shut two main valves to stop the gas leak by 9:47am on 2/27/2025. The section of 20" cast iron main damaged was then permanently abandoned by 4:40am on 2/28/2025. The location of the 1911 6" cast iron stub piece damaged was not accurately shown on pgw maps. These historic as built records were off by approximately ten feet. The line hit was not within the tolerance zone of where a pgw structure would have been expected. Note: the estimated evacuees reported in part a #22 is not based on actual evacuees but an estimate mainly based on building occupancy. Pgw did not evacuate any of the general public because the gas rupture was in the middle of the street and ventilating to the atmosphere. The local buildings self evacuated out of an abundance of caution. |
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