Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2012-06-29 — 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)
$1,500,000
Incident datetime
2012-06-29 12:06
Report number
Location
NY, WESTCHESTER
Narrative
On june 28, 2012 westchester gas distribution services (gds) was performing a follow up leak inspection at this location and discovered 17% in a manhole approximately 43' west of 12" transmission pressure v-25873 located at tarrytown road and yellowstone avenue in greenburgh, westchester county, ny. The manhole contained a 12" orifice meter and associated fittings. A 16" high pressure main is located 6' north of the transmission main, and dirt and materials in the manhole needed to be removed to investigate the source of the leak. A contingency case was initiated and isolation valves were identified and staffed. The manhole was vented and a vacuum truck was assigned to remove materials in the manhole. The segment of main was isolated affecting supply to gr-519 and gr-516. The pressure was reduced in the affected segment to 60 psi without incurring any interruptions or system impact. Gds monitored the location overnight and no readings were obtained, and no odor was present. On june 29, 2012 operational planning continued and additional valve closures were successful in isolating the segment of transmission main. Pressure control successfully reduced pressure to 30 psi, and at 12:06 (2) minor leaks were confirmed on the transmission main in the manhole on orifice meter fittings. The pressure was further reduced to approximately 8 psi and then again to approximately 1 psi. Operational procedure mpc-12-21 was developed and a total of 210' of new transmission main and a new 12" rov-59278 were installed. On july 19, 2012 at 03:48 the transmission system was returned to normal operating conditions. The nys psc and US DOT were notified. This was a serious level incident.
Detailed record list
Occurred At
2012-06-29 12:06:00
Year
2012
Report Received Date
2013-05-29 00:00:00
Iyear
2012.0
Report Number
20130061.0
Supplemental Number
15668.0
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
2012-06-29 12:06:00
Location Street Address
Tarrytown Road And Yellowstone Avenue
Location City Name
Town Of Greenburgh
Location County Name
Westchester
Location State Abbreviation
NY
Location Postal Code
10607
Location Latitude
41.04342
Location Longitude
-73.80153
Nrc Rpt Datetime
2012-06-29 12:25:00
Nrc Rpt Num
1016170
Commodity Released Type
Natural Gas
Unintentional Release
144.0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0.0
Incident Identified Datetime
2012-06-29 12:06:00
On Site Datetime
2012-06-29 12:06:00
Federal
No
Location Type
Utility Right-Of-Way / Easement
Incident Area Type
Underground
Incident Area Subtype
In Underground Enclosed Space (E.g. Vault)
Depth Of Cover
65.0
Crossing
No
Pipe Facility Type
Privately Owned
System Part Involved
District Regulator/metering Station
Installation Year
1954.0
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
1500000.0
Est Cost Emergency
8640.0
Est Cost Other
0.0
Est Cost Other Details
Includes Materials (Pipe, New Rov, Vault, Etc)
Est Cost Unintentional Release
288.0
Prpty
1508928.0
Commercial Affected
0.0
Industrial Affected
0.0
Residences Affected
0.0
Accident Psig
236.0
Normal Psig
236.0
Mop Psig
245.0
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
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
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
Minor leak on distribution line operating above 125 psig
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
Seal Packing. Small Leak On Orifice Meter Fittings
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
Department Manager-Gas Emergency Response Center
Authorizer Telephone
718-319-2350
Authorizer Email
D*******@c****.com
Narrative
On june 28, 2012 westchester gas distribution services (gds) was performing a follow up leak inspection at this location and discovered 17% in a manhole approximately 43' west of 12" transmission pressure v-25873 located at tarrytown road and yellowstone avenue in greenburgh, westchester county, ny. The manhole contained a 12" orifice meter and associated fittings. A 16" high pressure main is located 6' north of the transmission main, and dirt and materials in the manhole needed to be removed to investigate the source of the leak. A contingency case was initiated and isolation valves were identified and staffed. The manhole was vented and a vacuum truck was assigned to remove materials in the manhole. The segment of main was isolated affecting supply to gr-519 and gr-516. The pressure was reduced in the affected segment to 60 psi without incurring any interruptions or system impact. Gds monitored the location overnight and no readings were obtained, and no odor was present. On june 29, 2012 operational planning continued and additional valve closures were successful in isolating the segment of transmission main. Pressure control successfully reduced pressure to 30 psi, and at 12:06 (2) minor leaks were confirmed on the transmission main in the manhole on orifice meter fittings. The pressure was further reduced to approximately 8 psi and then again to approximately 1 psi. Operational procedure mpc-12-21 was developed and a total of 210' of new transmission main and a new 12" rov-59278 were installed. On july 19, 2012 at 03:48 the transmission system was returned to normal operating conditions. The nys psc and US DOT were notified. This was a serious level incident.
| Occurred At | 2012-06-29 12:06:00 |
|---|---|
| Year | 2012 |
| Report Received Date | 2013-05-29 00:00:00 |
| Iyear | 2012.0 |
| Report Number | 20130061.0 |
| Supplemental Number | 15668.0 |
| 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 | 2012-06-29 12:06:00 |
| Location Street Address | Tarrytown Road And Yellowstone Avenue |
| Location City Name | Town Of Greenburgh |
| Location County Name | Westchester |
| Location State Abbreviation | NY |
| Location Postal Code | 10607 |
| Location Latitude | 41.04342 Google Maps OpenStreetMap |
| Location Longitude | -73.80153 Google Maps OpenStreetMap |
| Nrc Rpt Datetime | 2012-06-29 12:25:00 |
| Nrc Rpt Num | 1016170 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 144.0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0.0 |
| Incident Identified Datetime | 2012-06-29 12:06:00 |
| On Site Datetime | 2012-06-29 12:06:00 |
| Federal | No |
| Location Type | Utility Right-Of-Way / Easement |
| Incident Area Type | Underground |
| Incident Area Subtype | In Underground Enclosed Space (E.g. Vault) |
| Depth Of Cover | 65.0 |
| Crossing | No |
| Pipe Facility Type | Privately Owned |
| System Part Involved | District Regulator/metering Station |
| Installation Year | 1954.0 |
| 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 | 1500000.0 |
| Est Cost Emergency | 8640.0 |
| Est Cost Other | 0.0 |
| Est Cost Other Details | Includes Materials (Pipe, New Rov, Vault, Etc) |
| Est Cost Unintentional Release | 288.0 |
| Prpty | 1508928.0 |
| Commercial Affected | 0.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 0.0 |
| Accident Psig | 236.0 |
| Normal Psig | 236.0 |
| Mop Psig | 245.0 |
| 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 | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| 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 | Minor leak on distribution line operating above 125 psig |
| 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 | Seal Packing. Small Leak On Orifice Meter Fittings |
| 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 | Department Manager-Gas Emergency Response Center |
| Authorizer Telephone | 718-319-2350 |
| Authorizer Email | D*******@c****.com |
| Narrative | On june 28, 2012 westchester gas distribution services (gds) was performing a follow up leak inspection at this location and discovered 17% in a manhole approximately 43' west of 12" transmission pressure v-25873 located at tarrytown road and yellowstone avenue in greenburgh, westchester county, ny. The manhole contained a 12" orifice meter and associated fittings. A 16" high pressure main is located 6' north of the transmission main, and dirt and materials in the manhole needed to be removed to investigate the source of the leak. A contingency case was initiated and isolation valves were identified and staffed. The manhole was vented and a vacuum truck was assigned to remove materials in the manhole. The segment of main was isolated affecting supply to gr-519 and gr-516. The pressure was reduced in the affected segment to 60 psi without incurring any interruptions or system impact. Gds monitored the location overnight and no readings were obtained, and no odor was present. On june 29, 2012 operational planning continued and additional valve closures were successful in isolating the segment of transmission main. Pressure control successfully reduced pressure to 30 psi, and at 12:06 (2) minor leaks were confirmed on the transmission main in the manhole on orifice meter fittings. The pressure was further reduced to approximately 8 psi and then again to approximately 1 psi. Operational procedure mpc-12-21 was developed and a total of 210' of new transmission main and a new 12" rov-59278 were installed. On july 19, 2012 at 03:48 the transmission system was returned to normal operating conditions. The nys psc and US DOT were notified. This was a serious level incident. |
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