Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2011-04-19 — NY
Operator
Consolidated Edison Co Of New York
Cause
Equipment Failure
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$20,943
Incident datetime
2011-04-19 10:03
Report number
Location
NY, WESTCHESTER
Narrative
On april 18, 2011 a westchester gas distribution services (gds) mechanic performed a transmission drip inspection survey and detected 35% gas-in-air reading in the regulator manhole of station gr-498 located at lincoln avenue and brookside way, harrison. The gas emergency response center (gerc) dispacthed gas construction crews and supervisors to the location. The leak was investigated and a 1" lubricating valve on a drip riser was determined to be the source of the leak. The valve was serviced and the leak secured. The area of work was left plated and secured overnight. On april 19, 2011, the location was surveilled during an inspection of the piping and a leak condition was found. An operational plan which was previously developed was implemented after a leak on a 1" drip riser compression coupling at the inlet of this regulator station was detected. The plan called for isolation of the first stage of gr-498 (212 psi inlet) which supplies a 60 psi high pressure distribution system. The effected section of transmission pressure pipe was isolated, depressurized and the leak condition eliminated. There was no reduction in pressure of the high pressure system, or loss of customers, as a result of these actions. Gas construction, gds, pressure control and transmission engineering remained on location until work was completed for the removal of the standpipe and coupling and the installation of a welded high-hat. Gr-498-l1 was placed back in normal service upon completion of all work at 23:49 hrs on april 19, 2011. The US DOT and nys psc were notified. This is a serious level event. Note--this gas distribution incident report is generated to replace rescinded gas transmission incident report 20110048-15869
Detailed record list
Occurred At
2011-04-19 10:03:00
Year
2011
Report Received Date
2013-05-22 00:00:00
Iyear
2011.0
Report Number
20130055.0
Supplemental Number
15662.0
Report Type
Original Final
Operator Id
2704
Name
Consolidated Edison Co Of New York
Operator Street Address
4 Irving Place
Operator City Name
New York
Operator State Abbreviation
NY
Operator Postal Code
10003
Local Datetime
2011-04-19 10:03:00
Location Street Address
Lincoln Avenue And Brookside Way
Location City Name
Town Of Harrison
Location County Name
Westchester
Location State Abbreviation
NY
Location Postal Code
10573
Location Latitude
41.0191609
Location Longitude
-73.693895
Nrc Rpt Datetime
2011-04-19 13:26:00
Nrc Rpt Num
973442
Commodity Released Type
Natural Gas
Unintentional Release
0.16
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0.0
Incident Identified Datetime
2011-04-19 10:03:00
On Site Datetime
2011-04-19 10:03:00
Federal
No
Location Type
Utility Right-Of-Way / Easement
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
36.0
Crossing
No
Pipe Facility Type
Privately Owned
System Part Involved
District Regulator/metering Station
Installation Year
1970.0
Material Involved
Steel
Steel Seam Type
Other
Steel Seam Type Details
Unknown
Release Type
Leak
Leak Type
Seal Or Packing
Class Location Type
Class 4 Location
Est Cost Oper Paid
0.0
Est Cost Prop Damage
20943.0
Est Cost Emergency
0.0
Est Cost Other
1000.0
Est Cost Other Details
Welded Aleeves & Welder
Est Cost Unintentional Release
100.0
Prpty
22043.0
Commercial Affected
0.0
Industrial Affected
0.0
Residences Affected
0.0
Accident Psig
212.0
Normal Psig
212.0
Mop Psig
245.0
Accident Pressure
Pressure Did Not Exceed Maop
Scada In Place Ind
Yes
Scada Operating Ind
No
Scada Functional Ind
No
Scada Detection Ind
No
Scada Conf 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
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Non-Threaded Connection Failure
Eq Failure Type
Non-Threaded Connection Failure
Other Non Threaded Ind
Other
Other Non Threaded Details
Mechanical Coupling On Drip Riser Leaking At Seal
Preparer Name
K**** F****
Preparer Title
Operations Manager-Gas Emergency Response Center
Preparer Email
F*****@c****.com
Preparer Telephone
718-319-2310
Preparer Fax
718-904-4607
Authorizer Name
V***** D******
Authorizer Title
Dept. Manager-Gas Emergency Response Center
Authorizer Telephone
718-319-2350
Authorizer Email
D*******@c****.com
Narrative
On april 18, 2011 a westchester gas distribution services (gds) mechanic performed a transmission drip inspection survey and detected 35% gas-in-air reading in the regulator manhole of station gr-498 located at lincoln avenue and brookside way, harrison. The gas emergency response center (gerc) dispacthed gas construction crews and supervisors to the location. The leak was investigated and a 1" lubricating valve on a drip riser was determined to be the source of the leak. The valve was serviced and the leak secured. The area of work was left plated and secured overnight. On april 19, 2011, the location was surveilled during an inspection of the piping and a leak condition was found. An operational plan which was previously developed was implemented after a leak on a 1" drip riser compression coupling at the inlet of this regulator station was detected. The plan called for isolation of the first stage of gr-498 (212 psi inlet) which supplies a 60 psi high pressure distribution system. The effected section of transmission pressure pipe was isolated, depressurized and the leak condition eliminated. There was no reduction in pressure of the high pressure system, or loss of customers, as a result of these actions. Gas construction, gds, pressure control and transmission engineering remained on location until work was completed for the removal of the standpipe and coupling and the installation of a welded high-hat. Gr-498-l1 was placed back in normal service upon completion of all work at 23:49 hrs on april 19, 2011. The US DOT and nys psc were notified. This is a serious level event. Note--this gas distribution incident report is generated to replace rescinded gas transmission incident report 20110048-15869
| Occurred At | 2011-04-19 10:03:00 |
|---|---|
| Year | 2011 |
| Report Received Date | 2013-05-22 00:00:00 |
| Iyear | 2011.0 |
| Report Number | 20130055.0 |
| Supplemental Number | 15662.0 |
| Report Type | Original Final |
| Operator Id | 2704 PHMSA Enforcement |
| Name | Consolidated Edison Co Of New York |
| Operator Street Address | 4 Irving Place |
| Operator City Name | New York |
| Operator State Abbreviation | NY |
| Operator Postal Code | 10003 |
| Local Datetime | 2011-04-19 10:03:00 |
| Location Street Address | Lincoln Avenue And Brookside Way |
| Location City Name | Town Of Harrison |
| Location County Name | Westchester |
| Location State Abbreviation | NY |
| Location Postal Code | 10573 |
| Location Latitude | 41.0191609 Google Maps OpenStreetMap |
| Location Longitude | -73.693895 Google Maps OpenStreetMap |
| Nrc Rpt Datetime | 2011-04-19 13:26:00 |
| Nrc Rpt Num | 973442 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 0.16 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0.0 |
| Incident Identified Datetime | 2011-04-19 10:03:00 |
| On Site Datetime | 2011-04-19 10:03:00 |
| Federal | No |
| Location Type | Utility Right-Of-Way / Easement |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 36.0 |
| Crossing | No |
| Pipe Facility Type | Privately Owned |
| System Part Involved | District Regulator/metering Station |
| Installation Year | 1970.0 |
| Material Involved | Steel |
| Steel Seam Type | Other |
| Steel Seam Type Details | Unknown |
| Release Type | Leak |
| Leak Type | Seal Or Packing |
| Class Location Type | Class 4 Location |
| Est Cost Oper Paid | 0.0 |
| Est Cost Prop Damage | 20943.0 |
| Est Cost Emergency | 0.0 |
| Est Cost Other | 1000.0 |
| Est Cost Other Details | Welded Aleeves & Welder |
| Est Cost Unintentional Release | 100.0 |
| Prpty | 22043.0 |
| Commercial Affected | 0.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 0.0 |
| Accident Psig | 212.0 |
| Normal Psig | 212.0 |
| Mop Psig | 245.0 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Scada In Place Ind | Yes |
| Scada Operating Ind | No |
| Scada Functional Ind | No |
| Scada Detection Ind | No |
| Scada Conf 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 | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Non-Threaded Connection Failure |
| Eq Failure Type | Non-Threaded Connection Failure |
| Other Non Threaded Ind | Other |
| Other Non Threaded Details | Mechanical Coupling On Drip Riser Leaking At Seal |
| Preparer Name | K**** F**** |
| Preparer Title | Operations Manager-Gas Emergency Response Center |
| Preparer Email | F*****@c****.com |
| Preparer Telephone | 718-319-2310 |
| Preparer Fax | 718-904-4607 |
| Authorizer Name | V***** D****** |
| Authorizer Title | Dept. Manager-Gas Emergency Response Center |
| Authorizer Telephone | 718-319-2350 |
| Authorizer Email | D*******@c****.com |
| Narrative | On april 18, 2011 a westchester gas distribution services (gds) mechanic performed a transmission drip inspection survey and detected 35% gas-in-air reading in the regulator manhole of station gr-498 located at lincoln avenue and brookside way, harrison. The gas emergency response center (gerc) dispacthed gas construction crews and supervisors to the location. The leak was investigated and a 1" lubricating valve on a drip riser was determined to be the source of the leak. The valve was serviced and the leak secured. The area of work was left plated and secured overnight. On april 19, 2011, the location was surveilled during an inspection of the piping and a leak condition was found. An operational plan which was previously developed was implemented after a leak on a 1" drip riser compression coupling at the inlet of this regulator station was detected. The plan called for isolation of the first stage of gr-498 (212 psi inlet) which supplies a 60 psi high pressure distribution system. The effected section of transmission pressure pipe was isolated, depressurized and the leak condition eliminated. There was no reduction in pressure of the high pressure system, or loss of customers, as a result of these actions. Gas construction, gds, pressure control and transmission engineering remained on location until work was completed for the removal of the standpipe and coupling and the installation of a welded high-hat. Gr-498-l1 was placed back in normal service upon completion of all work at 23:49 hrs on april 19, 2011. The US DOT and nys psc were notified. This is a serious level event. Note--this gas distribution incident report is generated to replace rescinded gas transmission incident report 20110048-15869 |
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