Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2025-06-06 — OH
Operator
Enbridge Gas Ohio
Cause
Excavation Issue
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$500
Incident datetime
2025-06-06 00:00 UTC
Report number
Location
OH, WAYNE
Narrative
At approximately 10:40am edt on may 7, 2025, an enbridge gas ohio 4" intermediate pressure (ip) distribution mainline (maop 80psig) was damaged by a 3rd party contractor. The contractor was installing broadband fiber by means of horizontal directional drilling (hdd) in a trailer park located at 1684 mechanicsburg road in wooster, ohio. After being notified of the damage by a call from the excavator, enbridge operations arrived at the scene and began leak detecting to determine the exact location of the hit. A valve south of the hit location was found and operations began digging north of the location to squeeze off the main line. Bar holing found low levels of gas under the skirt of the nearest mobile home and the two residents were evacuated as a precaution. At approximately 11:30am an unoccupied trailer at lot 80 on the east side of rose blvd exploded. No one was in the home at the time and there were no injuries or fatalities. Enbridge crews were working on rose blvd at the time of the explosion, and planning to begin bar hole testing of lot 80 while continuing to make efforts to isolate the line. It is believed that the gas had migrated underground via an undetermined pathway to the trailer on lot 80 and accumulated in the skirt underneath the trailer until an unknown ignition source caused the explosion. Operations crews subsequently closed the valve feeding the entire trailer park and continued bar holing the surrounding area. 911 was called and all residents were evacuated. The wooster fire department and police department arrived shortly after. Notifications of the incident were completed to the national response center and public utilities commission of ohio at approximately 12:15pm. The enbridge damage prevention team confirmed that an 811 ticket had been called in by the damaging party and that enbridge facilities had been properly marked at the hit line location. Enbridge operations excavated the hit line location and confirmed the 3rd party company had struck the 4" ip mainline with the 2" pilot bore, and the 3rd party had not daylighted the mainline prior to the damage. Subsequent testing found that enbridge facilities in the area were operating compliantly. Approximately 37 customers were out of service due to the closure of the valve to the trailer park to isolate the system. After cutting out and replacing the section of damaged main, ego crews purged the mainline back into service and began light ups to effected customers at 8:00pm and completed turn-ons at 11:00pm to all but 7 customers due to no access. The remaining 7 customers were restored to service in the following days as they granted access. After reporting the event to the nrc, it was determined that the event did not meet the criteria defined in �191.3(1) for an incident, but enbridge is filing this report under �191.3(3) as a significant event that could have resulted in more severe outcomes.
Detailed record list
Report Received Date
2025-06-06 00:00:00
Iyear
2025.0
Report Number
20250035.0
Supplemental Number
40997.0
Report Type
Original Final
Operator Id
4060
Name
Enbridge Gas Ohio
Operator Street Address
1201 East 55th Street
Operator City Name
Cleveland
Operator State Abbreviation
OH
Operator Postal Code
44103.0
Time Zone
Eastern
Daylight Savings Ind
Yes
Location Street Address
1684 Mechanicsburg Road
Location City Name
Wooster
Location County Name
Wayne
Location State Abbreviation
OH
Location Postal Code
44691.0
Location Latitude
40.817442
Location Longitude
-81.968573
Flow Cont Key Crit Ind
Yes
Nrc Rpt Num
1430464.0
Additional Nrc Report Numbers
1430588.0
Commodity Released Type
Natural Gas
Unintentional Release
255.0
Intentional Release
0.0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
Yes
How Extinguished
Allowed To Burn Out
Gas Consumed By Fire In Mcf
5
Explode Ind
Yes
Num Pub Evacuated
2.0
Communication State Fed Ind
Yes
Party Initiated Communication
Operator
Federal
No
Location Type
Private Property
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
49.0
Other Underground Facilities
Yes
Crossing
No
Pipe Facility Type
Investor Owned
System Part Involved
Main
Installation Year
2020.0
Manufactured Year
2019.0
Pipe Diameter
4.0
Pipe Specification
Astm D2513
Pipe Manufacturer
Polypipe
Material Involved
Plastic
Plastic Type
Polyethylene (Pe)
Plastic Sdr
11
Material Pe Pipe Code
4710
Release Type
Mechanical Puncture
Puncture Axial
2.0
Puncture Circum
2.0
Class Location Type
Class 3 Location
Est Cost Oper Paid
30000.0
Est Cost Prop Damage
500.0
Est Cost Emergency
14500.0
Est Cost Other
0.0
Gas Cost In Mcf
4.45
Est Cost Unintentional Release
1135.0
Est Cost Intentional Release
0.0
Prpty
46135.0
Commercial Affected
0.0
Industrial Affected
0.0
Residences Affected
37.0
Num Persons Hosp Not Ovnght
0.0
Num Injured Treated By Emt
0.0
Num Resident Building Affctd
38.0
Num Business Building Affctd
0.0
Accident Psig
55.0
Normal Psig
55.0
Mop Psig
80.0
Mop Cfr Section
192.619(A)(2)
Maop Established Date
2020-03-27 00:00:00
Accident Pressure
Pressure Did Not Exceed Maop
Gas Odorized System Type
Combination Of Odorization Types
Gas Odorized Level
0.4
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
No
Scada Conf Ind
No
Accident Identifier
Notification From Third Party That Caused The Incident
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
Control room would not have detected leak due small magnitude in overall system operation.
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
No
Pipeline Easement Row Ind
Yes
Joint Trench Ind
No
Cross Bore Ind
Yes
Depth Of Grade
Measured Depth From Grade
Depth Of Grade Detail
49
Excavator Type
Contractor
Excavator Equipment
Directional Drilling
Work Performed
Telecommunications
One Call Notified Ind
Yes
One Call Center Name
Ohio 811
White Lined Ind
Yes
Locator Type
Contract Locator
Visible Marks
Yes
Service Interruption
Yes
Service Interruption Hours
12.0
Root Cause Category
Excavation Issue
Root Cause Type
Excavator Dug Prior To Verifying Marks By Test-Hole (Pothole)
Preparer Name
D***** E****
Preparer Title
Manager Gas Operations
Preparer Email
D*************@d*************.com
Preparer Telephone
3305715796
Authorizer Name
D***** E****
Authorizer Title
Manager Gas Operations
Authorizer Telephone
3305715796
Authorizer Email
D*************@d*************.com
Narrative
At approximately 10:40am edt on may 7, 2025, an enbridge gas ohio 4" intermediate pressure (ip) distribution mainline (maop 80psig) was damaged by a 3rd party contractor. The contractor was installing broadband fiber by means of horizontal directional drilling (hdd) in a trailer park located at 1684 mechanicsburg road in wooster, ohio. After being notified of the damage by a call from the excavator, enbridge operations arrived at the scene and began leak detecting to determine the exact location of the hit. A valve south of the hit location was found and operations began digging north of the location to squeeze off the main line. Bar holing found low levels of gas under the skirt of the nearest mobile home and the two residents were evacuated as a precaution. At approximately 11:30am an unoccupied trailer at lot 80 on the east side of rose blvd exploded. No one was in the home at the time and there were no injuries or fatalities. Enbridge crews were working on rose blvd at the time of the explosion, and planning to begin bar hole testing of lot 80 while continuing to make efforts to isolate the line. It is believed that the gas had migrated underground via an undetermined pathway to the trailer on lot 80 and accumulated in the skirt underneath the trailer until an unknown ignition source caused the explosion. Operations crews subsequently closed the valve feeding the entire trailer park and continued bar holing the surrounding area. 911 was called and all residents were evacuated. The wooster fire department and police department arrived shortly after. Notifications of the incident were completed to the national response center and public utilities commission of ohio at approximately 12:15pm. The enbridge damage prevention team confirmed that an 811 ticket had been called in by the damaging party and that enbridge facilities had been properly marked at the hit line location. Enbridge operations excavated the hit line location and confirmed the 3rd party company had struck the 4" ip mainline with the 2" pilot bore, and the 3rd party had not daylighted the mainline prior to the damage. Subsequent testing found that enbridge facilities in the area were operating compliantly. Approximately 37 customers were out of service due to the closure of the valve to the trailer park to isolate the system. After cutting out and replacing the section of damaged main, ego crews purged the mainline back into service and began light ups to effected customers at 8:00pm and completed turn-ons at 11:00pm to all but 7 customers due to no access. The remaining 7 customers were restored to service in the following days as they granted access. After reporting the event to the nrc, it was determined that the event did not meet the criteria defined in �191.3(1) for an incident, but enbridge is filing this report under �191.3(3) as a significant event that could have resulted in more severe outcomes.
| Report Received Date | 2025-06-06 00:00:00 |
|---|---|
| Iyear | 2025.0 |
| Report Number | 20250035.0 |
| Supplemental Number | 40997.0 |
| Report Type | Original Final |
| Operator Id | 4060 PHMSA Enforcement |
| Name | Enbridge Gas Ohio |
| Operator Street Address | 1201 East 55th Street |
| Operator City Name | Cleveland |
| Operator State Abbreviation | OH |
| Operator Postal Code | 44103.0 |
| Time Zone | Eastern |
| Daylight Savings Ind | Yes |
| Location Street Address | 1684 Mechanicsburg Road |
| Location City Name | Wooster |
| Location County Name | Wayne |
| Location State Abbreviation | OH |
| Location Postal Code | 44691.0 |
| Location Latitude | 40.817442 Google Maps OpenStreetMap |
| Location Longitude | -81.968573 Google Maps OpenStreetMap |
| Flow Cont Key Crit Ind | Yes |
| Nrc Rpt Num | 1430464.0 NRC Report How to search |
| Additional Nrc Report Numbers | 1430588.0 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 255.0 |
| Intentional Release | 0.0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | Yes |
| How Extinguished | Allowed To Burn Out |
| Gas Consumed By Fire In Mcf | 5 |
| Explode Ind | Yes |
| Num Pub Evacuated | 2.0 |
| Communication State Fed Ind | Yes |
| Party Initiated Communication | Operator |
| Federal | No |
| Location Type | Private Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 49.0 |
| Other Underground Facilities | Yes |
| Crossing | No |
| Pipe Facility Type | Investor Owned |
| System Part Involved | Main |
| Installation Year | 2020.0 |
| Manufactured Year | 2019.0 |
| Pipe Diameter | 4.0 |
| Pipe Specification | Astm D2513 |
| Pipe Manufacturer | Polypipe |
| Material Involved | Plastic |
| Plastic Type | Polyethylene (Pe) |
| Plastic Sdr | 11 |
| Material Pe Pipe Code | 4710 |
| Release Type | Mechanical Puncture |
| Puncture Axial | 2.0 |
| Puncture Circum | 2.0 |
| Class Location Type | Class 3 Location |
| Est Cost Oper Paid | 30000.0 |
| Est Cost Prop Damage | 500.0 |
| Est Cost Emergency | 14500.0 |
| Est Cost Other | 0.0 |
| Gas Cost In Mcf | 4.45 |
| Est Cost Unintentional Release | 1135.0 |
| Est Cost Intentional Release | 0.0 |
| Prpty | 46135.0 |
| Commercial Affected | 0.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 37.0 |
| Num Persons Hosp Not Ovnght | 0.0 |
| Num Injured Treated By Emt | 0.0 |
| Num Resident Building Affctd | 38.0 |
| Num Business Building Affctd | 0.0 |
| Accident Psig | 55.0 |
| Normal Psig | 55.0 |
| Mop Psig | 80.0 |
| Mop Cfr Section | 192.619(A)(2) View CFR 49 §192 |
| Maop Established Date | 2020-03-27 00:00:00 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Gas Odorized System Type | Combination Of Odorization Types |
| Gas Odorized Level | 0.4 |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | No |
| Scada Conf Ind | No |
| Accident Identifier | Notification From Third Party That Caused The Incident |
| 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 | Control room would not have detected leak due small magnitude in overall system operation. |
| 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 | No |
| Pipeline Easement Row Ind | Yes |
| Joint Trench Ind | No |
| Cross Bore Ind | Yes |
| Depth Of Grade | Measured Depth From Grade |
| Depth Of Grade Detail | 49 |
| Excavator Type | Contractor |
| Excavator Equipment | Directional Drilling |
| Work Performed | Telecommunications |
| One Call Notified Ind | Yes |
| One Call Center Name | Ohio 811 |
| White Lined Ind | Yes |
| Locator Type | Contract Locator |
| Visible Marks | Yes |
| Service Interruption | Yes |
| Service Interruption Hours | 12.0 |
| Root Cause Category | Excavation Issue |
| Root Cause Type | Excavator Dug Prior To Verifying Marks By Test-Hole (Pothole) |
| Preparer Name | D***** E**** |
| Preparer Title | Manager Gas Operations |
| Preparer Email | D*************@d*************.com |
| Preparer Telephone | 3305715796 |
| Authorizer Name | D***** E**** |
| Authorizer Title | Manager Gas Operations |
| Authorizer Telephone | 3305715796 |
| Authorizer Email | D*************@d*************.com |
| Narrative | At approximately 10:40am edt on may 7, 2025, an enbridge gas ohio 4" intermediate pressure (ip) distribution mainline (maop 80psig) was damaged by a 3rd party contractor. The contractor was installing broadband fiber by means of horizontal directional drilling (hdd) in a trailer park located at 1684 mechanicsburg road in wooster, ohio. After being notified of the damage by a call from the excavator, enbridge operations arrived at the scene and began leak detecting to determine the exact location of the hit. A valve south of the hit location was found and operations began digging north of the location to squeeze off the main line. Bar holing found low levels of gas under the skirt of the nearest mobile home and the two residents were evacuated as a precaution. At approximately 11:30am an unoccupied trailer at lot 80 on the east side of rose blvd exploded. No one was in the home at the time and there were no injuries or fatalities. Enbridge crews were working on rose blvd at the time of the explosion, and planning to begin bar hole testing of lot 80 while continuing to make efforts to isolate the line. It is believed that the gas had migrated underground via an undetermined pathway to the trailer on lot 80 and accumulated in the skirt underneath the trailer until an unknown ignition source caused the explosion. Operations crews subsequently closed the valve feeding the entire trailer park and continued bar holing the surrounding area. 911 was called and all residents were evacuated. The wooster fire department and police department arrived shortly after. Notifications of the incident were completed to the national response center and public utilities commission of ohio at approximately 12:15pm. The enbridge damage prevention team confirmed that an 811 ticket had been called in by the damaging party and that enbridge facilities had been properly marked at the hit line location. Enbridge operations excavated the hit line location and confirmed the 3rd party company had struck the 4" ip mainline with the 2" pilot bore, and the 3rd party had not daylighted the mainline prior to the damage. Subsequent testing found that enbridge facilities in the area were operating compliantly. Approximately 37 customers were out of service due to the closure of the valve to the trailer park to isolate the system. After cutting out and replacing the section of damaged main, ego crews purged the mainline back into service and began light ups to effected customers at 8:00pm and completed turn-ons at 11:00pm to all but 7 customers due to no access. The remaining 7 customers were restored to service in the following days as they granted access. After reporting the event to the nrc, it was determined that the event did not meet the criteria defined in �191.3(1) for an incident, but enbridge is filing this report under �191.3(3) as a significant event that could have resulted in more severe outcomes. |
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