GD incident on 2023-06-13 — MI

Operator
Dte Gas Company
Cause
Corrosion Failure
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities 1 injury
Property damage (nominal)
$300
Incident datetime
2023-06-13 00:00 UTC
Report number
Location
MI, WAYNE
Narrative
A dte crew was in the process of replacing the service line to 26010 penn street, inkster, mi, 48141, since 8:30 am, when the house exploded injuring one (1) homeowner and one (1) dte gas employee. The investigation determined that a leak occurred at a corroded section of the 3/4-inch service riser in the crawl space of the house during removal of the meter manifold assembly. The corrosion appears to have occurred at the ground-to-atmosphere transition area and the disturbance of the piping during removal caused the leak. Employees were unaware of the leaking gas as it accumulated in the crawl space and ignited. A source of ignition has not been determined. Estimated volume of gas released unintentionally (part a.7) and estimated volume of gas consumed by fire (part a.21c) could not be determined due to unknown size and duration of the leak and is assumed to be minimal. Note: dte made the initial report to the nrc at 10:40 am, however, was on hold for 18 minutes, which matches the nrc's report for initial operator report time to nrc of 10:58 am.
Detailed record list
Report Received Date
2023-06-13 00:00:00
Iyear
2023.0
Report Number
20230028.0
Supplemental Number
39546.0
Report Type
Supplemental Final
Operator Id
Name
Dte Gas Company
Operator Street Address
1 Energy Plaza
Operator City Name
Detroit
Operator State Abbreviation
MI
Operator Postal Code
48226.0
Time Zone
Eastern
Daylight Savings Ind
Yes
Location Street Address
26010 Penn Street
Location City Name
Inkster
Location County Name
Wayne
Location State Abbreviation
MI
Location Postal Code
48141.0
Location Latitude
Location Longitude
Flow Cont Squeeze Off Ind
Yes
Nrc Rpt Num
Additional Nrc Report Numbers
1366323.0
Commodity Released Type
Natural Gas
Unintentional Release
0.0
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
1
Injure
1
Ignite Ind
Yes
How Extinguished
Local/state/federal Emergency Responder
Gas Consumed By Fire In Mcf
0
Explode Ind
Yes
Num Pub Evacuated
3.0
Communication State Fed Ind
Yes
Party Initiated Communication
Operator
Federal
No
Location Type
Private Property
Incident Area Type
Aboveground
Incident Area Subtype
Other
Incident Area Details
Explosion Originated In Home Crawl Space
Crossing
No
Pipe Facility Type
Investor Owned
System Part Involved
Service
Installation Year
1952.0
Customer Type
Single Family Residential
Was Efv Installed Before Ind
No
Curb Valve Inst Before Inc Ind
No
Pipe Diameter
0.75
Pipe Specification
Api 5l
Pipe Manufacturer
Unknown
Material Involved
Steel
Steel Seam Type
Other
Steel Seam Type Details
Unknown
Release Type
Leak
Leak Type
Other
Leak Type Other
Corrosion
Class Location Type
Class 3 Location
Est Cost Oper Paid
49000.0
Est Cost Prop Damage
300.0
Est Cost Emergency
10000.0
Est Cost Other
0.0
Gas Cost In Mcf
3.85
Est Cost Unintentional Release
0.0
Est Cost Intentional Release
0.0
Prpty
59300.0
Commercial Affected
0.0
Industrial Affected
0.0
Residences Affected
1.0
Num Persons Hosp Not Ovnght
1.0
Num Injured Treated By Emt
0.0
Num Resident Building Affctd
2.0
Num Business Building Affctd
0.0
Accident Psig
9.1
Normal Psig
10.0
Mop Psig
10.0
Mop Cfr Section
192.619(A)(1)
Maop Established Date
1952-08-24 00:00:00
Accident Pressure
Pressure Did Not Exceed Maop
Gas Odorized System Type
Injection Pump
Gas Odorized Level
0.4
Scada In Place Ind
No
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
Investigation Status
No, the facility was not monitored by a controller(s) at the time of the incident
Employee Drug Test Ind
Yes
Num Employees Tested
7
Num Employees Failed
0
Contractor Drug Test Ind
No
Cause
Corrosion Failure
Cause Details
External Corrosion
Internal External
External Corrosion
Visual Exam Results
Localized Pitting
Galvanic Corrosion Ind
Yes
Atmosphere Corrosion Ind
Yes
Other Corrosion Ind
Yes
Corrosion Type Details
Corrosion Appears To Have Occurred At The Ground-To-Atmosphere Transition Area
Field Exam Basis Ind
Yes
Underground Location
No
Externally Coated
Yes
Prior Damage
Yes
Coating Type
Unknown
Field Applied Ind
Unknown
Cor Hydrotest Leak Survey Date
2022-07-22 00:00:00
Cor Hydrotest Conducted Ind
No
Extrnl Cor Galvanic Ind
Yes
Extrnl Cor Atmospheric Ind
Yes
Preparer Name
M***** D******
Preparer Title
Supervisor - Codes And Standards
Preparer Email
M*************@d********.com
Preparer Telephone
15868724760
Authorizer Name
M***** I* D******
Authorizer Title
Supervisor - Codes And Standards
Authorizer Telephone
15868724760
Authorizer Email
M*************@d********.com
Narrative
A dte crew was in the process of replacing the service line to 26010 penn street, inkster, mi, 48141, since 8:30 am, when the house exploded injuring one (1) homeowner and one (1) dte gas employee. The investigation determined that a leak occurred at a corroded section of the 3/4-inch service riser in the crawl space of the house during removal of the meter manifold assembly. The corrosion appears to have occurred at the ground-to-atmosphere transition area and the disturbance of the piping during removal caused the leak. Employees were unaware of the leaking gas as it accumulated in the crawl space and ignited. A source of ignition has not been determined. Estimated volume of gas released unintentionally (part a.7) and estimated volume of gas consumed by fire (part a.21c) could not be determined due to unknown size and duration of the leak and is assumed to be minimal. Note: dte made the initial report to the nrc at 10:40 am, however, was on hold for 18 minutes, which matches the nrc's report for initial operator report time to nrc of 10:58 am.
Report Received Date 2023-06-13 00:00:00
Iyear 2023.0
Report Number 20230028.0
Supplemental Number 39546.0
Report Type Supplemental Final
Operator Id 12408 PHMSA Enforcement
Name Dte Gas Company
Operator Street Address 1 Energy Plaza
Operator City Name Detroit
Operator State Abbreviation MI
Operator Postal Code 48226.0
Time Zone Eastern
Daylight Savings Ind Yes
Location Street Address 26010 Penn Street
Location City Name Inkster
Location County Name Wayne
Location State Abbreviation MI
Location Postal Code 48141.0
Location Latitude 42.28536 Google Maps OpenStreetMap
Location Longitude -83.292466 Google Maps OpenStreetMap
Flow Cont Squeeze Off Ind Yes
Nrc Rpt Num 1366173.0 NRC Report How to search
Additional Nrc Report Numbers 1366323.0
Commodity Released Type Natural Gas
Unintentional Release 0.0
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 1
Injure 1
Ignite Ind Yes
How Extinguished Local/state/federal Emergency Responder
Gas Consumed By Fire In Mcf 0
Explode Ind Yes
Num Pub Evacuated 3.0
Communication State Fed Ind Yes
Party Initiated Communication Operator
Federal No
Location Type Private Property
Incident Area Type Aboveground
Incident Area Subtype Other
Incident Area Details Explosion Originated In Home Crawl Space
Crossing No
Pipe Facility Type Investor Owned
System Part Involved Service
Installation Year 1952.0
Customer Type Single Family Residential
Was Efv Installed Before Ind No
Curb Valve Inst Before Inc Ind No
Pipe Diameter 0.75
Pipe Specification Api 5l
Pipe Manufacturer Unknown
Material Involved Steel
Steel Seam Type Other
Steel Seam Type Details Unknown
Release Type Leak
Leak Type Other
Leak Type Other Corrosion
Class Location Type Class 3 Location
Est Cost Oper Paid 49000.0
Est Cost Prop Damage 300.0
Est Cost Emergency 10000.0
Est Cost Other 0.0
Gas Cost In Mcf 3.85
Est Cost Unintentional Release 0.0
Est Cost Intentional Release 0.0
Prpty 59300.0
Commercial Affected 0.0
Industrial Affected 0.0
Residences Affected 1.0
Num Persons Hosp Not Ovnght 1.0
Num Injured Treated By Emt 0.0
Num Resident Building Affctd 2.0
Num Business Building Affctd 0.0
Accident Psig 9.1
Normal Psig 10.0
Mop Psig 10.0
Mop Cfr Section 192.619(A)(1) View CFR 49 §192
Maop Established Date 1952-08-24 00:00:00
Accident Pressure Pressure Did Not Exceed Maop
Gas Odorized System Type Injection Pump
Gas Odorized Level 0.4
Scada In Place Ind No
Accident Identifier Local Operating Personnel, Including Contractors
Operator Type Operator Employee
Investigation Status No, the facility was not monitored by a controller(s) at the time of the incident
Employee Drug Test Ind Yes
Num Employees Tested 7
Num Employees Failed 0
Contractor Drug Test Ind No
Cause Corrosion Failure
Cause Details External Corrosion
Internal External External Corrosion
Visual Exam Results Localized Pitting
Galvanic Corrosion Ind Yes
Atmosphere Corrosion Ind Yes
Other Corrosion Ind Yes
Corrosion Type Details Corrosion Appears To Have Occurred At The Ground-To-Atmosphere Transition Area
Field Exam Basis Ind Yes
Underground Location No
Externally Coated Yes
Prior Damage Yes
Coating Type Unknown
Field Applied Ind Unknown
Cor Hydrotest Leak Survey Date 2022-07-22 00:00:00
Cor Hydrotest Conducted Ind No
Extrnl Cor Galvanic Ind Yes
Extrnl Cor Atmospheric Ind Yes
Preparer Name M***** D******
Preparer Title Supervisor - Codes And Standards
Preparer Email M*************@d********.com
Preparer Telephone 15868724760
Authorizer Name M***** I* D******
Authorizer Title Supervisor - Codes And Standards
Authorizer Telephone 15868724760
Authorizer Email M*************@d********.com
Narrative A dte crew was in the process of replacing the service line to 26010 penn street, inkster, mi, 48141, since 8:30 am, when the house exploded injuring one (1) homeowner and one (1) dte gas employee. The investigation determined that a leak occurred at a corroded section of the 3/4-inch service riser in the crawl space of the house during removal of the meter manifold assembly. The corrosion appears to have occurred at the ground-to-atmosphere transition area and the disturbance of the piping during removal caused the leak. Employees were unaware of the leaking gas as it accumulated in the crawl space and ignited. A source of ignition has not been determined. Estimated volume of gas released unintentionally (part a.7) and estimated volume of gas consumed by fire (part a.21c) could not be determined due to unknown size and duration of the leak and is assumed to be minimal. Note: dte made the initial report to the nrc at 10:40 am, however, was on hold for 18 minutes, which matches the nrc's report for initial operator report time to nrc of 10:58 am.

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