Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2014-01-03 — MI
Operator
Consumers Energy Co
Cause
Equipment Failure
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$0
Incident datetime
2014-01-03 04:12
Report number
Location
MI, SAGINAW
Narrative
On january 3, 2014, the pilot regulator on the primary run of the west meter installation at hemlock semiconductor iced up, causing the first cut regulator to operate wide open. As a result, the first cut relief valve (nominal size = 6") actuated and vented gas to the atmosphere through the relief stack. The relief valve blew for approximately three hours, venting 3.375 mmcf (million cubic feet) in the process. Fire department personnel blocked off a one-mile section of geddes road adjacent to the facility, and several employees were moved to another building on the site as a result of the incident. Media was on site reporting the incident. Upon responding, the pilot regulator was thawed and the first cut primary regulation at the meter installation was returned to normal operating conditions. As a remedial measure, a heater was installed on the primary run regulator & pilot, and control lines were heat-wrapped and insulated to help prevent re-occurrence. Incident notification to the nrc was delayed because the release volume was initially estimated to be less than 1mmcf and therefore would not meet the criteria for a federally reportable incident. Subsequent incident investigation and gas loss calculations performed confirmed a gas loss volume of approximately 3.375 mmcf thereby making the incident reportable and notification to both the nrc and peas were required.
Detailed record list
Occurred At
2014-01-03 04:12:00
Year
2014
Report Received Date
2014-01-31 00:00:00
Iyear
2014.0
Report Number
20140007.0
Supplemental Number
16226.0
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
2014-01-03 04:12:00
Location Street Address
12334 Geddes Road
Location City Name
Hemlock
Location County Name
Saginaw
Location State Abbreviation
MI
Location Postal Code
48626-9409
Location Latitude
43.434911
Location Longitude
-84.163717
Nrc Rpt Datetime
2014-01-06 10:30:00
Nrc Rpt Num
1070175
Commodity Released Type
Natural Gas
Unintentional Release
3375.0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
30.0
Incident Identified Datetime
2014-01-03 04:12:00
On Site Datetime
2014-01-03 05:15:00
Federal
No
Location Type
Private Property
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
Outside Meter/regulator Set
Installation Year
1999.0
Material Involved
Other
Material Details
Mixed Material Pilot Regulator.
Release Type
Other
Release Type Details
Meter Stand Relief Valve Blew Due To Frozen Pilot Regulator.
Class Location Type
Class 2 Location
Est Cost Oper Paid
0.0
Est Cost Prop Damage
0.0
Est Cost Emergency
509.0
Est Cost Other
200.0
Est Cost Other Details
Heater Installed On Primary Regulator & Pilot; Control Lines Wrapped/insulated
Est Cost Unintentional Release
16065.0
Prpty
16774.0
Commercial Affected
0.0
Industrial Affected
0.0
Residences Affected
0.0
Accident Psig
86.0
Normal Psig
60.0
Mop Psig
125.0
Accident Pressure
Pressure Did Not Exceed Maop
Scada In Place Ind
No
Accident Identifier
Notification From Public
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
Equipment Failure
Cause Details
Malfunction Of Control/relief Equipment
Eq Failure Type
Malfunction Of Control/relief Equipment
Pressure Regulator Ind
Yes
Preparer Name
C******* K***
Preparer Title
Senior Engineering Technical Analyst I
Preparer Email
C************@c********.com
Preparer Telephone
571-788-0509
Authorizer Name
A***** L* W***
Authorizer Title
Gas Regulatory Services Lead
Authorizer Telephone
517-545-8746
Authorizer Email
A**********@c********
Narrative
On january 3, 2014, the pilot regulator on the primary run of the west meter installation at hemlock semiconductor iced up, causing the first cut regulator to operate wide open. As a result, the first cut relief valve (nominal size = 6") actuated and vented gas to the atmosphere through the relief stack. The relief valve blew for approximately three hours, venting 3.375 mmcf (million cubic feet) in the process. Fire department personnel blocked off a one-mile section of geddes road adjacent to the facility, and several employees were moved to another building on the site as a result of the incident. Media was on site reporting the incident. Upon responding, the pilot regulator was thawed and the first cut primary regulation at the meter installation was returned to normal operating conditions. As a remedial measure, a heater was installed on the primary run regulator & pilot, and control lines were heat-wrapped and insulated to help prevent re-occurrence. Incident notification to the nrc was delayed because the release volume was initially estimated to be less than 1mmcf and therefore would not meet the criteria for a federally reportable incident. Subsequent incident investigation and gas loss calculations performed confirmed a gas loss volume of approximately 3.375 mmcf thereby making the incident reportable and notification to both the nrc and peas were required.
| Occurred At | 2014-01-03 04:12:00 |
|---|---|
| Year | 2014 |
| Report Received Date | 2014-01-31 00:00:00 |
| Iyear | 2014.0 |
| Report Number | 20140007.0 |
| Supplemental Number | 16226.0 |
| 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 | 2014-01-03 04:12:00 |
| Location Street Address | 12334 Geddes Road |
| Location City Name | Hemlock |
| Location County Name | Saginaw |
| Location State Abbreviation | MI |
| Location Postal Code | 48626-9409 |
| Location Latitude | 43.434911 Google Maps OpenStreetMap |
| Location Longitude | -84.163717 Google Maps OpenStreetMap |
| Nrc Rpt Datetime | 2014-01-06 10:30:00 |
| Nrc Rpt Num | 1070175 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 3375.0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 30.0 |
| Incident Identified Datetime | 2014-01-03 04:12:00 |
| On Site Datetime | 2014-01-03 05:15:00 |
| Federal | No |
| Location Type | Private Property |
| 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 | Outside Meter/regulator Set |
| Installation Year | 1999.0 |
| Material Involved | Other |
| Material Details | Mixed Material Pilot Regulator. |
| Release Type | Other |
| Release Type Details | Meter Stand Relief Valve Blew Due To Frozen Pilot Regulator. |
| Class Location Type | Class 2 Location |
| Est Cost Oper Paid | 0.0 |
| Est Cost Prop Damage | 0.0 |
| Est Cost Emergency | 509.0 |
| Est Cost Other | 200.0 |
| Est Cost Other Details | Heater Installed On Primary Regulator & Pilot; Control Lines Wrapped/insulated |
| Est Cost Unintentional Release | 16065.0 |
| Prpty | 16774.0 |
| Commercial Affected | 0.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 0.0 |
| Accident Psig | 86.0 |
| Normal Psig | 60.0 |
| Mop Psig | 125.0 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Scada In Place Ind | No |
| Accident Identifier | Notification From Public |
| 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 | Equipment Failure |
| Cause Details | Malfunction Of Control/relief Equipment |
| Eq Failure Type | Malfunction Of Control/relief Equipment |
| Pressure Regulator Ind | Yes |
| Preparer Name | C******* K*** |
| Preparer Title | Senior Engineering Technical Analyst I |
| Preparer Email | C************@c********.com |
| Preparer Telephone | 571-788-0509 |
| Authorizer Name | A***** L* W*** |
| Authorizer Title | Gas Regulatory Services Lead |
| Authorizer Telephone | 517-545-8746 |
| Authorizer Email | A**********@c******** |
| Narrative | On january 3, 2014, the pilot regulator on the primary run of the west meter installation at hemlock semiconductor iced up, causing the first cut regulator to operate wide open. As a result, the first cut relief valve (nominal size = 6") actuated and vented gas to the atmosphere through the relief stack. The relief valve blew for approximately three hours, venting 3.375 mmcf (million cubic feet) in the process. Fire department personnel blocked off a one-mile section of geddes road adjacent to the facility, and several employees were moved to another building on the site as a result of the incident. Media was on site reporting the incident. Upon responding, the pilot regulator was thawed and the first cut primary regulation at the meter installation was returned to normal operating conditions. As a remedial measure, a heater was installed on the primary run regulator & pilot, and control lines were heat-wrapped and insulated to help prevent re-occurrence. Incident notification to the nrc was delayed because the release volume was initially estimated to be less than 1mmcf and therefore would not meet the criteria for a federally reportable incident. Subsequent incident investigation and gas loss calculations performed confirmed a gas loss volume of approximately 3.375 mmcf thereby making the incident reportable and notification to both the nrc and peas were required. |
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