Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2021-08-03 — OH
Operator
Dominion Energy Ohio
Cause
Corrosion Failure
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
2 injuries
Property damage (nominal)
$5,000
Incident datetime
2021-08-03 14:00
Report number
Location
OH, CUYAHOGA
Narrative
On 8-3-21, at approx. 1:00 pm, an explosion and fire occurred at a residential property at 3645 e.57th st, cleveland, ohio. Two adult individuals were inside the structure at the time of the incident and subsequently hospitalized. The incident severely damaged the structure at 3645 e.57th st, which was razed on the evening of 8-3-21 by city of cleveland contractors. Two neighboring structures (3643 and 3649 e.57th st) also sustained damages. On 8-3-21, at approx. 2:00 pm, dominion energy ohio (deo) received a call from the city of cleveland fire department reporting the incident. Deo first responder arrived at approx. 2:12 pm and stopped the flow of gas to 3645 e.57th by closing the service line curb valve at approx. 2:35 pm. Deo also shut off the flow of gas to neighboring structures (3643 and 3649 e.57th) by closing the service line curb valves. Deo bar-holed along the mains on both sides of e.57th and along the customer service lines at 3633, 3639, 3642, 3643, 3644, 3645, 3646, 3649, 3653, and 3659 e.57th, and 0% readings were found. Deo leak surveyed along e.57th as well as e.54th, e.55th, and e.59th. No leaks were detected, with the exception of a grade-two leak at 3683 e.55th. Deo performed odorant testing at 3653 e.57th, and the odorant was readily detectible at 0.48%. On 8-3-21, the gas meter, manifold, and a section of service line piping were removed from the basement at 3645 e.57th. Deo pressure tested the remaining service line piping at 3645 e.57th at 7 oz (operating pressure) for 10 min. A pressure drop of approx. 0.5 oz was observed, but no leaks were discovered. A section containing the curb valve and main-to-curb transition was removed, and the remaining service line was re-tested at 7 oz for 10 min. A pressure drop of approx. 0.5 oz was observed. City contractors razed the structure at 3645 e.57th that evening. On 8-4-21, deo excavated, exposed, and re-tested the remaining service line (approx. 24 ft) at 7 oz for 10 min. A pressure drop of approx. 1 oz was observed, but no identifiable leaks were discovered. A cut was made approx. 8 ft from the end of the service line (closest to the main), and the 8-ft section was re-tested at 7 oz for 10 min. A pressure drop of slightly less than 2 oz was observed, but no identifiable leaks were discovered. The remaining 16-ft section was re-tested at 7 oz for 10 min, and no pressure drop was observed. The gas meter, manifold, and service line sections were preserved for laboratory inspection and testing. Three appliances (furnace, water heater, and stove/range) and miscellaneous house line piping also were identified during the city's post-demolition debris removal on 8-5-21 and 8-6-21. These artifacts were examined on 9-17-21. The 8-ft section of service line that previously was tested on 8-4-21 was flow rate leak tested at 7 oz, and no measurable flow rate was observed. The service line section from the basement of 3645 e.57th was kinked approx. 45 degrees by the city's contractors during its removal on 8-3-21, and a through-wall crack was observed at the kink. The kinked service line section was examined on 12-17-21, which included computed tomography (ct) scanning. Evidence of external corrosion and thinning of the piping wall was observed in the area where the service line passed through the foundation into the basement, which would have caused it to be less resistant to bending forces. The crack at the kink was visually examined, revealing that the piping wall was collapsed into the interior of the service line. For reporting purposes, deo classifies the apparent cause of this incident as external corrosion failure (see part g1), but the root cause remains unknown and undetermined. A natural gas leak from external corrosion on the service line inside the basement cannot be ruled out as a possible fuel source, but the physical evidence was compromised during post-incident removal by the city's contractors.
Detailed record list
Occurred At
2021-08-03 14:00:00
Year
2021
Report Received Date
2021-09-02 00:00:00
Iyear
2021.0
Report Number
20210075.0
Supplemental Number
36353.0
Report Type
Supplemental Final
Operator Id
4060
Name
Dominion Energy Ohio
Operator Street Address
1201 East 55th Street
Operator City Name
Cleveland
Operator State Abbreviation
OH
Operator Postal Code
44103
Local Datetime
2021-08-03 13:00:00
Time Zone
Eastern
Daylight Savings Ind
Yes
Location Street Address
3645 E 57th Street
Location City Name
Cleveland
Location County Name
Cuyahoga
Location State Abbreviation
OH
Location Postal Code
44105
Location Latitude
41.45906
Location Longitude
-81.64961
Flow Cont Service Valve Ind
Yes
Nrc Rpt Datetime
2021-08-03 14:43:00
Nrc Rpt Num
1312652
Additional Nrc Report Numbers
1312859
Commodity Released Type
Natural Gas
Unintentional Release
5.125
Intentional Release
0.0
Fatality Ind
No
Fatal
0
Injury Ind
Yes
Num Emp Injuries
0
Num Contr Injuries
0
Num Er Injuries
0
Num Worker Injuries
0
Num Gp Injuries
2
Injure
2
Ignite Ind
Yes
Ignite Datetime
2021-08-03 13:00:00
How Extinguished
Local/state/federal Emergency Responder
Gas Consumed By Fire In Mcf
5
Explode Ind
Yes
Num Pub Evacuated
3.0
Incident Identified Datetime
2021-08-03 14:00:00
On Site Datetime
2021-08-03 14:12:00
Federal
No
Location Type
Private Property
Incident Area Type
Aboveground
Incident Area Subtype
Inside A Building
Crossing
No
Pipe Facility Type
Investor Owned
System Part Involved
Service
Installation Year
1961.0
Customer Type
Single Family Residential
Was Efv Installed Before Ind
No
Curb Valve Inst Before Inc Ind
Yes
Pipe Diameter
1.25
Pipe Specification
Unknown
Pipe Manufacturer
Unknown
Material Involved
Steel
Steel Seam Type
Other
Steel Seam Type Details
Unknown
Release Type
Leak
Leak Type
Other
Leak Type Other
Undetermined.
Class Location Type
Class 3 Location
Est Cost Oper Paid
500000.0
Est Cost Prop Damage
5000.0
Est Cost Emergency
5000.0
Est Cost Other
0.0
Gas Cost In Mcf
5.248
Est Cost Unintentional Release
27.0
Est Cost Intentional Release
0.0
Prpty
510027.0
Commercial Affected
0.0
Industrial Affected
0.0
Residences Affected
3.0
Num Persons Hosp Not Ovnght
0.0
Num Injured Treated By Emt
0.0
Num Resident Building Affctd
3.0
Num Business Building Affctd
0.0
Accident Psig
0.44
Normal Psig
0.44
Mop Psig
1.0
Mop Cfr Section
192.623
Maop Established Date
1960-05-13 00:00:00
Accident Pressure
Pressure Did Not Exceed Maop
Gas Odorized System Type
Injection Pump
Gas Odorized Level
0.5
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
Corrosion Failure
Cause Details
External Corrosion
Internal External
External Corrosion
Visual Exam Results
General Corrosion
Atmosphere Corrosion Ind
Yes
Other Corrosion Ind
Yes
Corrosion Type Details
Aqueous
Field Exam Basis Ind
Yes
Metallurgical Basis Ind
Yes
Underground Location
No
Externally Coated
No
Prior Damage
N/a Bare/ineffectively Coated Pipe
Coating Type
None
Field Applied Ind
Unknown
Cor Hydrotest Leak Survey Date
2019-07-05 00:00:00
Cor Hydrotest Conducted Ind
No
Preparer Name
C**** H****
Preparer Title
Manager Compliance And Integrity
Preparer Email
C************@d*************.com
Preparer Telephone
330-437-9557
Local Contact Name
C**** H****
Local Contact Email
C************@d*************.com
Local Contact Telephone
330-437-9557
Authorizer Name
C**** H****
Authorizer Title
Manager Compliance And Integrity
Authorizer Telephone
330-437-9557
Authorizer Email
C************@d*************.com
Narrative
On 8-3-21, at approx. 1:00 pm, an explosion and fire occurred at a residential property at 3645 e.57th st, cleveland, ohio. Two adult individuals were inside the structure at the time of the incident and subsequently hospitalized. The incident severely damaged the structure at 3645 e.57th st, which was razed on the evening of 8-3-21 by city of cleveland contractors. Two neighboring structures (3643 and 3649 e.57th st) also sustained damages. On 8-3-21, at approx. 2:00 pm, dominion energy ohio (deo) received a call from the city of cleveland fire department reporting the incident. Deo first responder arrived at approx. 2:12 pm and stopped the flow of gas to 3645 e.57th by closing the service line curb valve at approx. 2:35 pm. Deo also shut off the flow of gas to neighboring structures (3643 and 3649 e.57th) by closing the service line curb valves. Deo bar-holed along the mains on both sides of e.57th and along the customer service lines at 3633, 3639, 3642, 3643, 3644, 3645, 3646, 3649, 3653, and 3659 e.57th, and 0% readings were found. Deo leak surveyed along e.57th as well as e.54th, e.55th, and e.59th. No leaks were detected, with the exception of a grade-two leak at 3683 e.55th. Deo performed odorant testing at 3653 e.57th, and the odorant was readily detectible at 0.48%. On 8-3-21, the gas meter, manifold, and a section of service line piping were removed from the basement at 3645 e.57th. Deo pressure tested the remaining service line piping at 3645 e.57th at 7 oz (operating pressure) for 10 min. A pressure drop of approx. 0.5 oz was observed, but no leaks were discovered. A section containing the curb valve and main-to-curb transition was removed, and the remaining service line was re-tested at 7 oz for 10 min. A pressure drop of approx. 0.5 oz was observed. City contractors razed the structure at 3645 e.57th that evening. On 8-4-21, deo excavated, exposed, and re-tested the remaining service line (approx. 24 ft) at 7 oz for 10 min. A pressure drop of approx. 1 oz was observed, but no identifiable leaks were discovered. A cut was made approx. 8 ft from the end of the service line (closest to the main), and the 8-ft section was re-tested at 7 oz for 10 min. A pressure drop of slightly less than 2 oz was observed, but no identifiable leaks were discovered. The remaining 16-ft section was re-tested at 7 oz for 10 min, and no pressure drop was observed. The gas meter, manifold, and service line sections were preserved for laboratory inspection and testing. Three appliances (furnace, water heater, and stove/range) and miscellaneous house line piping also were identified during the city's post-demolition debris removal on 8-5-21 and 8-6-21. These artifacts were examined on 9-17-21. The 8-ft section of service line that previously was tested on 8-4-21 was flow rate leak tested at 7 oz, and no measurable flow rate was observed. The service line section from the basement of 3645 e.57th was kinked approx. 45 degrees by the city's contractors during its removal on 8-3-21, and a through-wall crack was observed at the kink. The kinked service line section was examined on 12-17-21, which included computed tomography (ct) scanning. Evidence of external corrosion and thinning of the piping wall was observed in the area where the service line passed through the foundation into the basement, which would have caused it to be less resistant to bending forces. The crack at the kink was visually examined, revealing that the piping wall was collapsed into the interior of the service line. For reporting purposes, deo classifies the apparent cause of this incident as external corrosion failure (see part g1), but the root cause remains unknown and undetermined. A natural gas leak from external corrosion on the service line inside the basement cannot be ruled out as a possible fuel source, but the physical evidence was compromised during post-incident removal by the city's contractors.
| Occurred At | 2021-08-03 14:00:00 |
|---|---|
| Year | 2021 |
| Report Received Date | 2021-09-02 00:00:00 |
| Iyear | 2021.0 |
| Report Number | 20210075.0 |
| Supplemental Number | 36353.0 |
| Report Type | Supplemental Final |
| Operator Id | 4060 PHMSA Enforcement |
| Name | Dominion Energy Ohio |
| Operator Street Address | 1201 East 55th Street |
| Operator City Name | Cleveland |
| Operator State Abbreviation | OH |
| Operator Postal Code | 44103 |
| Local Datetime | 2021-08-03 13:00:00 |
| Time Zone | Eastern |
| Daylight Savings Ind | Yes |
| Location Street Address | 3645 E 57th Street |
| Location City Name | Cleveland |
| Location County Name | Cuyahoga |
| Location State Abbreviation | OH |
| Location Postal Code | 44105 |
| Location Latitude | 41.45906 Google Maps OpenStreetMap |
| Location Longitude | -81.64961 Google Maps OpenStreetMap |
| Flow Cont Service Valve Ind | Yes |
| Nrc Rpt Datetime | 2021-08-03 14:43:00 |
| Nrc Rpt Num | 1312652 NRC Report How to search |
| Additional Nrc Report Numbers | 1312859 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 5.125 |
| Intentional Release | 0.0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | Yes |
| Num Emp Injuries | 0 |
| Num Contr Injuries | 0 |
| Num Er Injuries | 0 |
| Num Worker Injuries | 0 |
| Num Gp Injuries | 2 |
| Injure | 2 |
| Ignite Ind | Yes |
| Ignite Datetime | 2021-08-03 13:00:00 |
| How Extinguished | Local/state/federal Emergency Responder |
| Gas Consumed By Fire In Mcf | 5 |
| Explode Ind | Yes |
| Num Pub Evacuated | 3.0 |
| Incident Identified Datetime | 2021-08-03 14:00:00 |
| On Site Datetime | 2021-08-03 14:12:00 |
| Federal | No |
| Location Type | Private Property |
| Incident Area Type | Aboveground |
| Incident Area Subtype | Inside A Building |
| Crossing | No |
| Pipe Facility Type | Investor Owned |
| System Part Involved | Service |
| Installation Year | 1961.0 |
| Customer Type | Single Family Residential |
| Was Efv Installed Before Ind | No |
| Curb Valve Inst Before Inc Ind | Yes |
| Pipe Diameter | 1.25 |
| Pipe Specification | Unknown |
| Pipe Manufacturer | Unknown |
| Material Involved | Steel |
| Steel Seam Type | Other |
| Steel Seam Type Details | Unknown |
| Release Type | Leak |
| Leak Type | Other |
| Leak Type Other | Undetermined. |
| Class Location Type | Class 3 Location |
| Est Cost Oper Paid | 500000.0 |
| Est Cost Prop Damage | 5000.0 |
| Est Cost Emergency | 5000.0 |
| Est Cost Other | 0.0 |
| Gas Cost In Mcf | 5.248 |
| Est Cost Unintentional Release | 27.0 |
| Est Cost Intentional Release | 0.0 |
| Prpty | 510027.0 |
| Commercial Affected | 0.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 3.0 |
| Num Persons Hosp Not Ovnght | 0.0 |
| Num Injured Treated By Emt | 0.0 |
| Num Resident Building Affctd | 3.0 |
| Num Business Building Affctd | 0.0 |
| Accident Psig | 0.44 |
| Normal Psig | 0.44 |
| Mop Psig | 1.0 |
| Mop Cfr Section | 192.623 View CFR 49 §192 |
| Maop Established Date | 1960-05-13 00:00:00 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Gas Odorized System Type | Injection Pump |
| Gas Odorized Level | 0.5 |
| 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 | Corrosion Failure |
| Cause Details | External Corrosion |
| Internal External | External Corrosion |
| Visual Exam Results | General Corrosion |
| Atmosphere Corrosion Ind | Yes |
| Other Corrosion Ind | Yes |
| Corrosion Type Details | Aqueous |
| Field Exam Basis Ind | Yes |
| Metallurgical Basis Ind | Yes |
| Underground Location | No |
| Externally Coated | No |
| Prior Damage | N/a Bare/ineffectively Coated Pipe |
| Coating Type | None |
| Field Applied Ind | Unknown |
| Cor Hydrotest Leak Survey Date | 2019-07-05 00:00:00 |
| Cor Hydrotest Conducted Ind | No |
| Preparer Name | C**** H**** |
| Preparer Title | Manager Compliance And Integrity |
| Preparer Email | C************@d*************.com |
| Preparer Telephone | 330-437-9557 |
| Local Contact Name | C**** H**** |
| Local Contact Email | C************@d*************.com |
| Local Contact Telephone | 330-437-9557 |
| Authorizer Name | C**** H**** |
| Authorizer Title | Manager Compliance And Integrity |
| Authorizer Telephone | 330-437-9557 |
| Authorizer Email | C************@d*************.com |
| Narrative | On 8-3-21, at approx. 1:00 pm, an explosion and fire occurred at a residential property at 3645 e.57th st, cleveland, ohio. Two adult individuals were inside the structure at the time of the incident and subsequently hospitalized. The incident severely damaged the structure at 3645 e.57th st, which was razed on the evening of 8-3-21 by city of cleveland contractors. Two neighboring structures (3643 and 3649 e.57th st) also sustained damages. On 8-3-21, at approx. 2:00 pm, dominion energy ohio (deo) received a call from the city of cleveland fire department reporting the incident. Deo first responder arrived at approx. 2:12 pm and stopped the flow of gas to 3645 e.57th by closing the service line curb valve at approx. 2:35 pm. Deo also shut off the flow of gas to neighboring structures (3643 and 3649 e.57th) by closing the service line curb valves. Deo bar-holed along the mains on both sides of e.57th and along the customer service lines at 3633, 3639, 3642, 3643, 3644, 3645, 3646, 3649, 3653, and 3659 e.57th, and 0% readings were found. Deo leak surveyed along e.57th as well as e.54th, e.55th, and e.59th. No leaks were detected, with the exception of a grade-two leak at 3683 e.55th. Deo performed odorant testing at 3653 e.57th, and the odorant was readily detectible at 0.48%. On 8-3-21, the gas meter, manifold, and a section of service line piping were removed from the basement at 3645 e.57th. Deo pressure tested the remaining service line piping at 3645 e.57th at 7 oz (operating pressure) for 10 min. A pressure drop of approx. 0.5 oz was observed, but no leaks were discovered. A section containing the curb valve and main-to-curb transition was removed, and the remaining service line was re-tested at 7 oz for 10 min. A pressure drop of approx. 0.5 oz was observed. City contractors razed the structure at 3645 e.57th that evening. On 8-4-21, deo excavated, exposed, and re-tested the remaining service line (approx. 24 ft) at 7 oz for 10 min. A pressure drop of approx. 1 oz was observed, but no identifiable leaks were discovered. A cut was made approx. 8 ft from the end of the service line (closest to the main), and the 8-ft section was re-tested at 7 oz for 10 min. A pressure drop of slightly less than 2 oz was observed, but no identifiable leaks were discovered. The remaining 16-ft section was re-tested at 7 oz for 10 min, and no pressure drop was observed. The gas meter, manifold, and service line sections were preserved for laboratory inspection and testing. Three appliances (furnace, water heater, and stove/range) and miscellaneous house line piping also were identified during the city's post-demolition debris removal on 8-5-21 and 8-6-21. These artifacts were examined on 9-17-21. The 8-ft section of service line that previously was tested on 8-4-21 was flow rate leak tested at 7 oz, and no measurable flow rate was observed. The service line section from the basement of 3645 e.57th was kinked approx. 45 degrees by the city's contractors during its removal on 8-3-21, and a through-wall crack was observed at the kink. The kinked service line section was examined on 12-17-21, which included computed tomography (ct) scanning. Evidence of external corrosion and thinning of the piping wall was observed in the area where the service line passed through the foundation into the basement, which would have caused it to be less resistant to bending forces. The crack at the kink was visually examined, revealing that the piping wall was collapsed into the interior of the service line. For reporting purposes, deo classifies the apparent cause of this incident as external corrosion failure (see part g1), but the root cause remains unknown and undetermined. A natural gas leak from external corrosion on the service line inside the basement cannot be ruled out as a possible fuel source, but the physical evidence was compromised during post-incident removal by the city's contractors. |
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