Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2015-05-02 — MI
Operator
Consumers Energy Co
Cause
Other Outside Force Damage
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$30,519
Incident datetime
2015-05-02 16:47
Report number
Location
MI, SHIAWASSEE
Narrative
On saturday, may 2, 2015 at approximately 16:47 an above-grade 10" high pressure distribution emergency valve assembly was struck by a farmer operating cultivation equipment in a field near 4487 e. M-71, corunna, shiawassee county, michigan. A 2" threaded nipple was torn off as a result of the damage, causing blowing gas. Consumers energy personnel arrived on site at approximately 17:17 to address the immediate public safety hazard, secure the site, assess damage to company facilities, and determine next steps. Local police and and fire personnel blocked traffic in both direction on highway e. M-71, and approximately 60 residences were evacuated. Temporary shelter for was provided to evacuated residents. Based on an analysis of repair options and potential service interruptions from isolating the damaged section, a pressure reduction was performed to take the affected segment from 315 psig to 150 psig. The gradual pressure reduction allowed service to be maintained to several thousand customers in preparation for valving operation. The pressure reduction was completed at 00:28 hours on may 3. A revised response plan was developed at 4:00 hours to further reduce service interruptions by backfeeding the downstream 60 psig (medium pressure) system from two adjacent systems. At approximately 12:00 hours on may 3, pressure on the damaged high pressure system was further reduced to below 15 psig, allowing consumers energy personnel to replace the damaged threaded valve assembly and complete repairs to the damaged facility. At 14:45 on may 3, blowing gas was stopped for completion of final repairs. Repairs were completed and normal operation was restored at 16:00.
Detailed record list
Occurred At
2015-05-02 16:47:00
Year
2015
Report Received Date
2015-06-01 00:00:00
Iyear
2015.0
Report Number
20150052.0
Supplemental Number
16194.0
Report Type
Supplemental Final
Operator Id
2748
Name
Consumers Energy Co
Operator Street Address
One Energy Plaza
Operator City Name
Jackson
Operator State Abbreviation
MI
Operator Postal Code
49201
Local Datetime
2015-05-02 16:47:00
Location Street Address
4487 E. M-71
Location City Name
Corunna
Location County Name
Shiawassee
Location State Abbreviation
MI
Location Postal Code
48817
Location Latitude
42.96816
Location Longitude
-84.081998
Nrc Rpt Datetime
2015-05-02 19:56:00
Nrc Rpt Num
1115334
Commodity Released Type
Natural Gas
Unintentional Release
12525.0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
60.0
Incident Identified Datetime
2015-05-02 16:47:00
On Site Datetime
2015-05-02 17:17:00
Federal
No
Location Type
Utility Right-Of-Way / Easement
Incident Area Type
Aboveground
Incident Area Subtype
Typical Aboveground Facility Piping Or Appurtenance (E.g. Value Or Regulator Station, Outdoor Meter Set)
Crossing
No
Pipe Facility Type
Privately Owned
System Part Involved
Other
System Part Details
Emergency Valve Assembly (Plug Valves)
Installation Year
2013.0
Material Involved
Other
Material Details
2" Threaded Nipple
Release Type
Mechanical Puncture
Puncture Axial
2.0
Puncture Circum
2.0
Class Location Type
Class 2 Location
Est Cost Oper Paid
0.0
Est Cost Prop Damage
30519.0
Est Cost Emergency
5140.0
Est Cost Other
0.0
Est Cost Unintentional Release
93443.0
Prpty
129102.0
Commercial Affected
0.0
Industrial Affected
0.0
Residences Affected
0.0
Accident Psig
315.0
Normal Psig
315.0
Mop Psig
350.0
Accident Pressure
Pressure Did Not Exceed Maop
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
The release was the result of a third party damage and the operator was notified by 911-dispatcher.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Other Outside Force Damage
Cause Details
Damage By Car, Truck, Or Other Motorized Vehicle/equipment Not Engaged In Excavation
Outside Force Type
Damage By Car, Truck, Or Other Motorized Vehicle/equipment Not Engaged In Excavation
Vehicle Subtype
Third Party
Preparer Name
C******* Q* K***
Preparer Title
Senior Engineering Technical Analyst I
Preparer Email
C************@c********.com
Preparer Telephone
517-788-0509
Authorizer Name
A*** M* C*********
Authorizer Title
Gas Regulatory Services Engineer
Authorizer Telephone
989-791-5841
Authorizer Email
A**************@c********.com
Narrative
On saturday, may 2, 2015 at approximately 16:47 an above-grade 10" high pressure distribution emergency valve assembly was struck by a farmer operating cultivation equipment in a field near 4487 e. M-71, corunna, shiawassee county, michigan. A 2" threaded nipple was torn off as a result of the damage, causing blowing gas. Consumers energy personnel arrived on site at approximately 17:17 to address the immediate public safety hazard, secure the site, assess damage to company facilities, and determine next steps. Local police and and fire personnel blocked traffic in both direction on highway e. M-71, and approximately 60 residences were evacuated. Temporary shelter for was provided to evacuated residents. Based on an analysis of repair options and potential service interruptions from isolating the damaged section, a pressure reduction was performed to take the affected segment from 315 psig to 150 psig. The gradual pressure reduction allowed service to be maintained to several thousand customers in preparation for valving operation. The pressure reduction was completed at 00:28 hours on may 3. A revised response plan was developed at 4:00 hours to further reduce service interruptions by backfeeding the downstream 60 psig (medium pressure) system from two adjacent systems. At approximately 12:00 hours on may 3, pressure on the damaged high pressure system was further reduced to below 15 psig, allowing consumers energy personnel to replace the damaged threaded valve assembly and complete repairs to the damaged facility. At 14:45 on may 3, blowing gas was stopped for completion of final repairs. Repairs were completed and normal operation was restored at 16:00.
| Occurred At | 2015-05-02 16:47:00 |
|---|---|
| Year | 2015 |
| Report Received Date | 2015-06-01 00:00:00 |
| Iyear | 2015.0 |
| Report Number | 20150052.0 |
| Supplemental Number | 16194.0 |
| Report Type | Supplemental Final |
| Operator Id | 2748 PHMSA Enforcement |
| Name | Consumers Energy Co |
| Operator Street Address | One Energy Plaza |
| Operator City Name | Jackson |
| Operator State Abbreviation | MI |
| Operator Postal Code | 49201 |
| Local Datetime | 2015-05-02 16:47:00 |
| Location Street Address | 4487 E. M-71 |
| Location City Name | Corunna |
| Location County Name | Shiawassee |
| Location State Abbreviation | MI |
| Location Postal Code | 48817 |
| Location Latitude | 42.96816 Google Maps OpenStreetMap |
| Location Longitude | -84.081998 Google Maps OpenStreetMap |
| Nrc Rpt Datetime | 2015-05-02 19:56:00 |
| Nrc Rpt Num | 1115334 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 12525.0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 60.0 |
| Incident Identified Datetime | 2015-05-02 16:47:00 |
| On Site Datetime | 2015-05-02 17:17:00 |
| Federal | No |
| Location Type | Utility Right-Of-Way / Easement |
| Incident Area Type | Aboveground |
| Incident Area Subtype | Typical Aboveground Facility Piping Or Appurtenance (E.g. Value Or Regulator Station, Outdoor Meter Set) |
| Crossing | No |
| Pipe Facility Type | Privately Owned |
| System Part Involved | Other |
| System Part Details | Emergency Valve Assembly (Plug Valves) |
| Installation Year | 2013.0 |
| Material Involved | Other |
| Material Details | 2" Threaded Nipple |
| Release Type | Mechanical Puncture |
| Puncture Axial | 2.0 |
| Puncture Circum | 2.0 |
| Class Location Type | Class 2 Location |
| Est Cost Oper Paid | 0.0 |
| Est Cost Prop Damage | 30519.0 |
| Est Cost Emergency | 5140.0 |
| Est Cost Other | 0.0 |
| Est Cost Unintentional Release | 93443.0 |
| Prpty | 129102.0 |
| Commercial Affected | 0.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 0.0 |
| Accident Psig | 315.0 |
| Normal Psig | 315.0 |
| Mop Psig | 350.0 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| 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 | The release was the result of a third party damage and the operator was notified by 911-dispatcher. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Other Outside Force Damage |
| Cause Details | Damage By Car, Truck, Or Other Motorized Vehicle/equipment Not Engaged In Excavation |
| Outside Force Type | Damage By Car, Truck, Or Other Motorized Vehicle/equipment Not Engaged In Excavation |
| Vehicle Subtype | Third Party |
| Preparer Name | C******* Q* K*** |
| Preparer Title | Senior Engineering Technical Analyst I |
| Preparer Email | C************@c********.com |
| Preparer Telephone | 517-788-0509 |
| Authorizer Name | A*** M* C********* |
| Authorizer Title | Gas Regulatory Services Engineer |
| Authorizer Telephone | 989-791-5841 |
| Authorizer Email | A**************@c********.com |
| Narrative | On saturday, may 2, 2015 at approximately 16:47 an above-grade 10" high pressure distribution emergency valve assembly was struck by a farmer operating cultivation equipment in a field near 4487 e. M-71, corunna, shiawassee county, michigan. A 2" threaded nipple was torn off as a result of the damage, causing blowing gas. Consumers energy personnel arrived on site at approximately 17:17 to address the immediate public safety hazard, secure the site, assess damage to company facilities, and determine next steps. Local police and and fire personnel blocked traffic in both direction on highway e. M-71, and approximately 60 residences were evacuated. Temporary shelter for was provided to evacuated residents. Based on an analysis of repair options and potential service interruptions from isolating the damaged section, a pressure reduction was performed to take the affected segment from 315 psig to 150 psig. The gradual pressure reduction allowed service to be maintained to several thousand customers in preparation for valving operation. The pressure reduction was completed at 00:28 hours on may 3. A revised response plan was developed at 4:00 hours to further reduce service interruptions by backfeeding the downstream 60 psig (medium pressure) system from two adjacent systems. At approximately 12:00 hours on may 3, pressure on the damaged high pressure system was further reduced to below 15 psig, allowing consumers energy personnel to replace the damaged threaded valve assembly and complete repairs to the damaged facility. At 14:45 on may 3, blowing gas was stopped for completion of final repairs. Repairs were completed and normal operation was restored at 16:00. |
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