Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2011-01-24 — OH
Operator
Dominion East Ohio
Cause
Equipment Failure
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$0
Incident datetime
2011-01-24 06:37
Report number
Location
OH, LAKE
Narrative
The dominion network that is utilized to serve fairport harbor consists of steel and plastic low pressure distribution piping. Gas is supplied through three district regulator stations from the northeast, east and southwest areas of the village. These three stations contain two control/monitor regulators set at 6.5 ounces (oz) and 8.5 ounces per square inch gauge respectively. The northeast station is equipped with a hi-lo for monitoring system pressure that is set at 8.5 oz and 4.5 oz respectively. The east station also contains a relief device for audible warning set at 12oz. At approximately 6:37 a.M. On 01/24/2011, dominion received a high alarm from the hi-lo monitor at the northeast station. A technician was immediately dispatched to the area. The technician noted the relief blowing as he passed the east station and notified supervision. The technician arrived at the northeast station at 7:15 a.M., and shut the inlet valve to the northeast station. He proceeded to the east station, shut the inlet valve and obtained a system pressure reading of 8.5 psig. Supervision was updated that the northeast and east stations were not supplying gas, and both stations had been shut-in. Supervision advised the technician to open the inlet to the east station and proceed to the southwest station. Upon arrival he noted the southwest station was supplying gas and shut the inlet valve. Supervision advised him to return to the east station and monitor the system pressure. At 8:05 a.M. The technician returned to the east station and noted the relief had stopped blowing. He verified that system pressure had returned to 6.5oz. Leak survey of the fairport harbor system was conducted on 01/24/2011 and repeated on 01/25/2011. Construction and maintenance crews repaired all hazardous leaks upon discovery and continue to work on repair of non-hazardous leaks. Dominion field personnel remained in the area over the next three days, restoring service to 1300 affected customers. Dominion has worked with fairport harbor village officials and the american red cross providing housing and short-term financial support for those in need until service restoration. Eleven homes received severe damage from fire and 150 homes required appliance repair or replacement. Dominion and its contractors have provided all necessary house line repairs, appliance repairs and replacement. For nine structures considered to be uninhabitable, dominion continues to work through the process of resolving customer claims. Dominion worked with the public utilities commission of ohio, fairport harbor fire department investigators and the state fire marshal in removing the regulators and other associated equipment from the southwest station. The station equipment has been taken to the gas technology institute (gti) for further examination and investigation. After gti removed an oily substance and cleaned the components with isopropyl alcohol, the regulators involved in the incident were tested in june and august with all other interested parties present. The regulating equipment was determined to function as designed during increasing and decreasing flow and pressure conditions. The regulating equipment was found to operate properly with the fluids removed. It is currently believed that the presence of pipeline fluids and gas temperature drop across the regulators caused the regulators to malfunction.
Detailed record list
Occurred At
2011-01-24 06:37:00
Year
2011
Report Received Date
2011-02-23 00:00:00
Iyear
2011.0
Report Number
20110034.0
Supplemental Number
15469.0
Report Type
Supplemental Final
Operator Id
4060
Name
Dominion East Ohio
Operator Street Address
1201 East 55th Street
Operator City Name
Cleveland
Operator State Abbreviation
OH
Operator Postal Code
44103
Local Datetime
2011-01-24 06:37:00
Location Street Address
High Street District Regulator Station
Location City Name
Fairport Harbor
Location County Name
Lake
Location State Abbreviation
OH
Location Postal Code
44077-5521
Location Latitude
41.7431
Location Longitude
-81.2744
Nrc Rpt Datetime
2011-01-24 09:29:00
Nrc Rpt Num
965512
Commodity Released Type
Natural Gas
Unintentional Release
86.0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
Yes
Explode Ind
No
Num Pub Evacuated
1505.0
Incident Identified Datetime
2011-01-24 06:37:00
On Site Datetime
2011-01-24 07:15:00
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
District Regulator/metering Station
Installation Year
1999.0
Material Involved
Other
Material Details
Regulator Station
Release Type
Other
Release Type Details
Operating Pressure Exceeded Maop, Warning Device Relief Released Gas
Class Location Type
Class 3 Location
Est Cost Oper Paid
1220000.0
Est Cost Prop Damage
0.0
Est Cost Emergency
73000.0
Est Cost Other
0.0
Est Cost Unintentional Release
413.0
Prpty
1293413.0
Commercial Affected
100.0
Industrial Affected
0.0
Residences Affected
1200.0
Accident Psig
8.5
Normal Psig
0.5
Mop Psig
1.0
Accident Pressure
Pressure Exceeded The Applicable Allowance In 192.201
Scada In Place Ind
No
Accident Identifier
Other
Accident Details
System Is Monitored By Hi- Low Pressure Alarms
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
S***** W* B***
Preparer Title
Technical Consultant
Preparer Email
S************@d**.com
Preparer Telephone
330-401-8033
Preparer Fax
866-521-4877
Authorizer Name
A**** M****
Authorizer Title
Technical Specialist
Authorizer Telephone
330-458-9186
Authorizer Email
A************@d**.com
Narrative
The dominion network that is utilized to serve fairport harbor consists of steel and plastic low pressure distribution piping. Gas is supplied through three district regulator stations from the northeast, east and southwest areas of the village. These three stations contain two control/monitor regulators set at 6.5 ounces (oz) and 8.5 ounces per square inch gauge respectively. The northeast station is equipped with a hi-lo for monitoring system pressure that is set at 8.5 oz and 4.5 oz respectively. The east station also contains a relief device for audible warning set at 12oz. At approximately 6:37 a.M. On 01/24/2011, dominion received a high alarm from the hi-lo monitor at the northeast station. A technician was immediately dispatched to the area. The technician noted the relief blowing as he passed the east station and notified supervision. The technician arrived at the northeast station at 7:15 a.M., and shut the inlet valve to the northeast station. He proceeded to the east station, shut the inlet valve and obtained a system pressure reading of 8.5 psig. Supervision was updated that the northeast and east stations were not supplying gas, and both stations had been shut-in. Supervision advised the technician to open the inlet to the east station and proceed to the southwest station. Upon arrival he noted the southwest station was supplying gas and shut the inlet valve. Supervision advised him to return to the east station and monitor the system pressure. At 8:05 a.M. The technician returned to the east station and noted the relief had stopped blowing. He verified that system pressure had returned to 6.5oz. Leak survey of the fairport harbor system was conducted on 01/24/2011 and repeated on 01/25/2011. Construction and maintenance crews repaired all hazardous leaks upon discovery and continue to work on repair of non-hazardous leaks. Dominion field personnel remained in the area over the next three days, restoring service to 1300 affected customers. Dominion has worked with fairport harbor village officials and the american red cross providing housing and short-term financial support for those in need until service restoration. Eleven homes received severe damage from fire and 150 homes required appliance repair or replacement. Dominion and its contractors have provided all necessary house line repairs, appliance repairs and replacement. For nine structures considered to be uninhabitable, dominion continues to work through the process of resolving customer claims. Dominion worked with the public utilities commission of ohio, fairport harbor fire department investigators and the state fire marshal in removing the regulators and other associated equipment from the southwest station. The station equipment has been taken to the gas technology institute (gti) for further examination and investigation. After gti removed an oily substance and cleaned the components with isopropyl alcohol, the regulators involved in the incident were tested in june and august with all other interested parties present. The regulating equipment was determined to function as designed during increasing and decreasing flow and pressure conditions. The regulating equipment was found to operate properly with the fluids removed. It is currently believed that the presence of pipeline fluids and gas temperature drop across the regulators caused the regulators to malfunction.
| Occurred At | 2011-01-24 06:37:00 |
|---|---|
| Year | 2011 |
| Report Received Date | 2011-02-23 00:00:00 |
| Iyear | 2011.0 |
| Report Number | 20110034.0 |
| Supplemental Number | 15469.0 |
| Report Type | Supplemental Final |
| Operator Id | 4060 PHMSA Enforcement |
| Name | Dominion East Ohio |
| Operator Street Address | 1201 East 55th Street |
| Operator City Name | Cleveland |
| Operator State Abbreviation | OH |
| Operator Postal Code | 44103 |
| Local Datetime | 2011-01-24 06:37:00 |
| Location Street Address | High Street District Regulator Station |
| Location City Name | Fairport Harbor |
| Location County Name | Lake |
| Location State Abbreviation | OH |
| Location Postal Code | 44077-5521 |
| Location Latitude | 41.7431 Google Maps OpenStreetMap |
| Location Longitude | -81.2744 Google Maps OpenStreetMap |
| Nrc Rpt Datetime | 2011-01-24 09:29:00 |
| Nrc Rpt Num | 965512 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 86.0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | Yes |
| Explode Ind | No |
| Num Pub Evacuated | 1505.0 |
| Incident Identified Datetime | 2011-01-24 06:37:00 |
| On Site Datetime | 2011-01-24 07:15:00 |
| 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 | District Regulator/metering Station |
| Installation Year | 1999.0 |
| Material Involved | Other |
| Material Details | Regulator Station |
| Release Type | Other |
| Release Type Details | Operating Pressure Exceeded Maop, Warning Device Relief Released Gas |
| Class Location Type | Class 3 Location |
| Est Cost Oper Paid | 1220000.0 |
| Est Cost Prop Damage | 0.0 |
| Est Cost Emergency | 73000.0 |
| Est Cost Other | 0.0 |
| Est Cost Unintentional Release | 413.0 |
| Prpty | 1293413.0 |
| Commercial Affected | 100.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 1200.0 |
| Accident Psig | 8.5 |
| Normal Psig | 0.5 |
| Mop Psig | 1.0 |
| Accident Pressure | Pressure Exceeded The Applicable Allowance In 192.201 |
| Scada In Place Ind | No |
| Accident Identifier | Other |
| Accident Details | System Is Monitored By Hi- Low Pressure Alarms |
| 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 | S***** W* B*** |
| Preparer Title | Technical Consultant |
| Preparer Email | S************@d**.com |
| Preparer Telephone | 330-401-8033 |
| Preparer Fax | 866-521-4877 |
| Authorizer Name | A**** M**** |
| Authorizer Title | Technical Specialist |
| Authorizer Telephone | 330-458-9186 |
| Authorizer Email | A************@d**.com |
| Narrative | The dominion network that is utilized to serve fairport harbor consists of steel and plastic low pressure distribution piping. Gas is supplied through three district regulator stations from the northeast, east and southwest areas of the village. These three stations contain two control/monitor regulators set at 6.5 ounces (oz) and 8.5 ounces per square inch gauge respectively. The northeast station is equipped with a hi-lo for monitoring system pressure that is set at 8.5 oz and 4.5 oz respectively. The east station also contains a relief device for audible warning set at 12oz. At approximately 6:37 a.M. On 01/24/2011, dominion received a high alarm from the hi-lo monitor at the northeast station. A technician was immediately dispatched to the area. The technician noted the relief blowing as he passed the east station and notified supervision. The technician arrived at the northeast station at 7:15 a.M., and shut the inlet valve to the northeast station. He proceeded to the east station, shut the inlet valve and obtained a system pressure reading of 8.5 psig. Supervision was updated that the northeast and east stations were not supplying gas, and both stations had been shut-in. Supervision advised the technician to open the inlet to the east station and proceed to the southwest station. Upon arrival he noted the southwest station was supplying gas and shut the inlet valve. Supervision advised him to return to the east station and monitor the system pressure. At 8:05 a.M. The technician returned to the east station and noted the relief had stopped blowing. He verified that system pressure had returned to 6.5oz. Leak survey of the fairport harbor system was conducted on 01/24/2011 and repeated on 01/25/2011. Construction and maintenance crews repaired all hazardous leaks upon discovery and continue to work on repair of non-hazardous leaks. Dominion field personnel remained in the area over the next three days, restoring service to 1300 affected customers. Dominion has worked with fairport harbor village officials and the american red cross providing housing and short-term financial support for those in need until service restoration. Eleven homes received severe damage from fire and 150 homes required appliance repair or replacement. Dominion and its contractors have provided all necessary house line repairs, appliance repairs and replacement. For nine structures considered to be uninhabitable, dominion continues to work through the process of resolving customer claims. Dominion worked with the public utilities commission of ohio, fairport harbor fire department investigators and the state fire marshal in removing the regulators and other associated equipment from the southwest station. The station equipment has been taken to the gas technology institute (gti) for further examination and investigation. After gti removed an oily substance and cleaned the components with isopropyl alcohol, the regulators involved in the incident were tested in june and august with all other interested parties present. The regulating equipment was determined to function as designed during increasing and decreasing flow and pressure conditions. The regulating equipment was found to operate properly with the fluids removed. It is currently believed that the presence of pipeline fluids and gas temperature drop across the regulators caused the regulators to malfunction. |
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