Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2012-11-10 — NY
Operator
Consolidated Edison Co Of New York
Cause
Equipment Failure
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$1,261,000
Incident datetime
2012-11-10 10:44
Report number
Location
NY
Narrative
On november 5, 2012 westchester gas operations performed a 30-day leak follow-up inspection at 100 fisher avenue, white plains, new york and detected 24% in the valve box 24" 230 psi transmission main valve 25971. Westchester gas operations, gas engineering and gas control were notified. Gas construction responded and investigated over the main and detected 41% over the transmission main 4' west of the valve box. The readings vented to 5%-10% range and no migration beyond the street was detected. All subsurface structures and buildings investigated were found gas free. Contingency w12-151, case 38b and 38c were placed in effect. Gas engineering responded to location with westchester gas to determine a course of action. An operational plan was developed and around-the-clock operations began for the replacement of approx. 320' of transmission main from west of v-25971 east to the inlet of transmission-medium pressure regulator station gr-512. Two remote operated valves (rovs) were operated by gas control to ensure there was no impact to the gas system. Additionally, (5) 24" compression coupling were identified, excavated and prepared for the welded repair sleeve installation as a preemptive measure. On november 10, 2012 at 10:44 a visible leak on a 24" compression coupling located 124' west of v-25971 was reported. Gas control was notified and at 10:59 ordered contingency v-32715 closed. At 11:15 the valve was reported to be in the fully closed position. The pressure in the affected segment of main at time of discovery of the leak was 233 psi. The segment of main was isolated and there was no gas system impact as a result of the isolation. Around-the-clock operations continued until the welded sleeve was installed over the leaking coupling to secure the leak on november 12, 2012 at 15:43. On 11-20-12 at 06:21 operations associated with replacement procedure mpc-12-46 commenced. On november 21, 2012 at 07:43 operations were completed and v-32715 was opened and pressure was raised incrementally. At 08:17 the valve was reported fully opened and pressure in the affected segment was returned to 230 psi. Leak survey checked during incremental pressure increases during the restoration process and no leaks were found. Gas control reported at 08:37 the system was returned to normal operating conditions. The US DOT and nys psc were notified.
Detailed record list
Report Received Date
2012-12-08 00:00:00
Iyear
2012
Report Number
20120119
Supplemental Number
15813
Report Type
Supplemental 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
2012-11-10 10:44:00
Location Latitude
41.027542
Location Longitude
-73.774627
Nrc Rpt Num
1030221
Nrc Rpt Datetime
2012-11-10 11:24:00
Commodity Released Type
Natural Gas
Unintentional Release
24
Intentional Release
0
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2012-11-10 11:15:00
Restart Datetime
2012-11-21 08:37:00
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Incident Identified Datetime
2012-11-10 10:44:00
On Site Datetime
2012-11-10 10:44:00
On Off Shore
Onshore
Onshore State Abbreviation
Ny
Onshore Postal Code
10602-7504
Onshore City Name
White Plains
Onshore County Name
Westchester
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Under Pavement
Depth Of Cover
65
Crossing
No
Pipe Facility Type
Intrastate
System Part Involved
Onshore Pipeline, Including Valve Sites
Item Involved
Other
Item Involved Details
24" Compression Coupling
Installation Year
1948
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Seal Or Packing
Class Location Type
Class 4 Location
Could Be Hca
Yes
Determination Method
Method1
Pir Radius
259
Heat Damage Ind
No
Non Heat Damage Ind
No
Hca Fatalities Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
48
Est Cost Intentional Release
0
Est Cost Prop Damage
1261000
Est Cost Emergency
1000
Est Cost Other
0
Prpty
1262048
Accident Psig
233
Mop Psig
245
Mop Cfr Section
Not On Omb-Approved Form When Submitted
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
No
Upstream Valve Type Ind
Manual
Downstream Valve Type Ind
Manual
Length Segment Isolated
528
Internal Inspection Ind
No
Diameter Change Ind
Yes
Unsuitable Mainline Ind
Yes
Tight Mitered Ind
Yes
Operation Complications Ind
No
Pipeline Function
Transmission System
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 compression coupling resulting in no pressure loss or increased flow.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Threaded Connection/coupling Failure
Eq Failure Type
Threaded Connection/coupling Failure
Other Stripped Ind
Mechanical Coupling
Eq Additional Other Ind
Yes
Eq Additional Other Details
Compression Coupling Leak 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
Department Manager-Gas Emergency Response Center
Authorizer Telephone
718-319-2350
Authorizer Email
D*******@c****.com
Narrative
On november 5, 2012 westchester gas operations performed a 30-day leak follow-up inspection at 100 fisher avenue, white plains, new york and detected 24% in the valve box 24" 230 psi transmission main valve 25971. Westchester gas operations, gas engineering and gas control were notified. Gas construction responded and investigated over the main and detected 41% over the transmission main 4' west of the valve box. The readings vented to 5%-10% range and no migration beyond the street was detected. All subsurface structures and buildings investigated were found gas free. Contingency w12-151, case 38b and 38c were placed in effect. Gas engineering responded to location with westchester gas to determine a course of action. An operational plan was developed and around-the-clock operations began for the replacement of approx. 320' of transmission main from west of v-25971 east to the inlet of transmission-medium pressure regulator station gr-512. Two remote operated valves (rovs) were operated by gas control to ensure there was no impact to the gas system. Additionally, (5) 24" compression coupling were identified, excavated and prepared for the welded repair sleeve installation as a preemptive measure. On november 10, 2012 at 10:44 a visible leak on a 24" compression coupling located 124' west of v-25971 was reported. Gas control was notified and at 10:59 ordered contingency v-32715 closed. At 11:15 the valve was reported to be in the fully closed position. The pressure in the affected segment of main at time of discovery of the leak was 233 psi. The segment of main was isolated and there was no gas system impact as a result of the isolation. Around-the-clock operations continued until the welded sleeve was installed over the leaking coupling to secure the leak on november 12, 2012 at 15:43. On 11-20-12 at 06:21 operations associated with replacement procedure mpc-12-46 commenced. On november 21, 2012 at 07:43 operations were completed and v-32715 was opened and pressure was raised incrementally. At 08:17 the valve was reported fully opened and pressure in the affected segment was returned to 230 psi. Leak survey checked during incremental pressure increases during the restoration process and no leaks were found. Gas control reported at 08:37 the system was returned to normal operating conditions. The US DOT and nys psc were notified.
| Report Received Date | 2012-12-08 00:00:00 |
|---|---|
| Iyear | 2012 |
| Report Number | 20120119 |
| Supplemental Number | 15813 |
| Report Type | Supplemental 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 | 2012-11-10 10:44:00 |
| Location Latitude | 41.027542 Google Maps OpenStreetMap |
| Location Longitude | -73.774627 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1030221 NRC Report How to search |
| Nrc Rpt Datetime | 2012-11-10 11:24:00 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 24 |
| Intentional Release | 0 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2012-11-10 11:15:00 |
| Restart Datetime | 2012-11-21 08:37:00 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2012-11-10 10:44:00 |
| On Site Datetime | 2012-11-10 10:44:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Ny |
| Onshore Postal Code | 10602-7504 |
| Onshore City Name | White Plains |
| Onshore County Name | Westchester |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Pavement |
| Depth Of Cover | 65 |
| Crossing | No |
| Pipe Facility Type | Intrastate |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| Item Involved | Other |
| Item Involved Details | 24" Compression Coupling |
| Installation Year | 1948 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Seal Or Packing |
| Class Location Type | Class 4 Location |
| Could Be Hca | Yes |
| Determination Method | Method1 |
| Pir Radius | 259 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Hca Fatalities Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 48 |
| Est Cost Intentional Release | 0 |
| Est Cost Prop Damage | 1261000 |
| Est Cost Emergency | 1000 |
| Est Cost Other | 0 |
| Prpty | 1262048 |
| Accident Psig | 233 |
| Mop Psig | 245 |
| Mop Cfr Section | Not On Omb-Approved Form When Submitted View CFR 49 §192 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Pressure Restriction Ind | No |
| Upstream Valve Type Ind | Manual |
| Downstream Valve Type Ind | Manual |
| Length Segment Isolated | 528 |
| Internal Inspection Ind | No |
| Diameter Change Ind | Yes |
| Unsuitable Mainline Ind | Yes |
| Tight Mitered Ind | Yes |
| Operation Complications Ind | No |
| Pipeline Function | Transmission System |
| 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 compression coupling resulting in no pressure loss or increased flow. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Threaded Connection/coupling Failure |
| Eq Failure Type | Threaded Connection/coupling Failure |
| Other Stripped Ind | Mechanical Coupling |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | Compression Coupling Leak 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 | Department Manager-Gas Emergency Response Center |
| Authorizer Telephone | 718-319-2350 |
| Authorizer Email | D*******@c****.com |
| Narrative | On november 5, 2012 westchester gas operations performed a 30-day leak follow-up inspection at 100 fisher avenue, white plains, new york and detected 24% in the valve box 24" 230 psi transmission main valve 25971. Westchester gas operations, gas engineering and gas control were notified. Gas construction responded and investigated over the main and detected 41% over the transmission main 4' west of the valve box. The readings vented to 5%-10% range and no migration beyond the street was detected. All subsurface structures and buildings investigated were found gas free. Contingency w12-151, case 38b and 38c were placed in effect. Gas engineering responded to location with westchester gas to determine a course of action. An operational plan was developed and around-the-clock operations began for the replacement of approx. 320' of transmission main from west of v-25971 east to the inlet of transmission-medium pressure regulator station gr-512. Two remote operated valves (rovs) were operated by gas control to ensure there was no impact to the gas system. Additionally, (5) 24" compression coupling were identified, excavated and prepared for the welded repair sleeve installation as a preemptive measure. On november 10, 2012 at 10:44 a visible leak on a 24" compression coupling located 124' west of v-25971 was reported. Gas control was notified and at 10:59 ordered contingency v-32715 closed. At 11:15 the valve was reported to be in the fully closed position. The pressure in the affected segment of main at time of discovery of the leak was 233 psi. The segment of main was isolated and there was no gas system impact as a result of the isolation. Around-the-clock operations continued until the welded sleeve was installed over the leaking coupling to secure the leak on november 12, 2012 at 15:43. On 11-20-12 at 06:21 operations associated with replacement procedure mpc-12-46 commenced. On november 21, 2012 at 07:43 operations were completed and v-32715 was opened and pressure was raised incrementally. At 08:17 the valve was reported fully opened and pressure in the affected segment was returned to 230 psi. Leak survey checked during incremental pressure increases during the restoration process and no leaks were found. Gas control reported at 08:37 the system was returned to normal operating conditions. The US DOT and nys psc were notified. |
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