Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2013-03-21 — NY
Operator
Consolidated Edison Co Of New York
Cause
Pipe, Weld, Or Joint Failure
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$25,000
Incident datetime
2013-03-21 08:41
Report number
Location
NY, WESTCHESTER
Narrative
On wednesday, march 20, 2013 leak survey detected 35% at the curb line and 25% in a bar-hole in the vicinity of a gas transmission main to the gas emergency response center (gerc). Gas distribution system (gds), gas construction and supervision were notified and responded. Gas construction conducted a leak investigation survey over the route of the 1948 12" steel transmission main (245 psi system) and the 16" medium pressure cast iron (mpci) main in the area. All subsurface structures in the area were checked and found clear; there were no buildings in the area. Gas control was notified and contingency case 39-a was initiated. Isolation valves 25977 and 25976 were staffed and gas control confirmed communication with remote operated valve (rov) 32717. Gas crews continued to aerate, pinpoint and monitor the area. On thursday, march 21, 2013 at 08:41 the investigation identified a probable transmission main leak approximately 175' south of the transcontinental gas pipeline (tgpl) white plains gate station located at bronx street and mott street (wp).Transmission engineering, distribution engineering, gas control, major projects, technical operations, gerc and westchester gas operations participated in operational planning to identify the actions required to maintain supply to the distribution system as well as the actions required to repair the suspected 12" coupling believed to be the source of the leak. Repair procedure mpc-13-09 was initiated and on friday, march 22, 2013 at 10:16 the segment of transmission main was isolated and pressure reduced from 214 psi to 62 psi. Repair operations continued around-the-clock and a visible leak was confirmed on a 12" compression coupling. A welded repair sleeve was installed to secure the leak. A second welded repair sleeve was installed on a coupling not leaking but in close proximity as a precaution. On saturday, march 23, 2013 a preliminary mobile leak survey was performed in advance of pressure restoration and (2) leaks were found along the route of the transmission main. The leaks were investigated and it was determined the transmission main was not the source of the readings detected. A third t-1 was detected during pressure restoration and a 16" mpci hub was found to be the source of that leak. On monday, march 25, 2013 at 02:00 the isolated segment was returned to normal operating pressure. Gas control and pressure control are returning the regulator stations involved in this procedure to normal settings. There were no outages as a result of this operational plan. No evacuations, injuries or media attention were reported as a result of this event. The white plains fire department (wpfd) was notified and the wpfd responded per the transmission leak notification protocol and repair operations were reviewed. The US DOT and nys psc were notified and the psc responded to location. This was a serious level incident.
Detailed record list
Occurred At
2013-03-21 08:41:00
Year
2013
Report Received Date
2013-06-03 00:00:00
Iyear
2013.0
Report Number
20130067.0
Supplemental Number
15675.0
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
2013-03-20 10:00:00
Location Street Address
Bronx Street And Hamilton Avenue
Location City Name
White Plains
Location County Name
Westchester
Location State Abbreviation
NY
Location Postal Code
10606
Location Latitude
41.03323
Location Longitude
-73.77553
Nrc Rpt Datetime
2013-03-22 10:45:00
Nrc Rpt Num
1041813
Commodity Released Type
Natural Gas
Unintentional Release
9.8
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0.0
Incident Identified Datetime
2013-03-21 08:41:00
On Site Datetime
2013-03-21 08:41:00
Federal
No
Location Type
Utility Right-Of-Way / Easement
Incident Area Type
Underground
Incident Area Subtype
Under Pavement
Depth Of Cover
51.0
Crossing
No
Pipe Facility Type
Privately Owned
System Part Involved
Main
Installation Year
1948.0
Pipe Diameter
12.0
Pipe Specification
Unknown
Pipe Manufacturer
Unknown
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
25000.0
Est Cost Emergency
5000.0
Est Cost Other
1500.0
Est Cost Other Details
Materials
Est Cost Unintentional Release
10.0
Prpty
31510.0
Commercial Affected
0.0
Industrial Affected
0.0
Residences Affected
0.0
Accident Psig
214.0
Normal Psig
214.0
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
Ground Patrol By Operator Or Its Contractor
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
Leak on a compression coupling
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Pipe, Weld, Or Joint Failure
Cause Details
Mechanical Joint Failure
Pwjf Failure Type
Mechanical Joint Failure
Mec Fitting Involved
Bolted
Mec Fitting Type
Coupling
Mec Manufacturer
Dresser
Mec Fitting Material
Other
Mec Fitting Material Detail
Materials Joined: 1st Steel, 2nd Steel
Additional Other Ind
Yes
Additional Factor Details
Compression Coupling Leak At Seal
Hydrotest Conducted Ind
No
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 wednesday, march 20, 2013 leak survey detected 35% at the curb line and 25% in a bar-hole in the vicinity of a gas transmission main to the gas emergency response center (gerc). Gas distribution system (gds), gas construction and supervision were notified and responded. Gas construction conducted a leak investigation survey over the route of the 1948 12" steel transmission main (245 psi system) and the 16" medium pressure cast iron (mpci) main in the area. All subsurface structures in the area were checked and found clear; there were no buildings in the area. Gas control was notified and contingency case 39-a was initiated. Isolation valves 25977 and 25976 were staffed and gas control confirmed communication with remote operated valve (rov) 32717. Gas crews continued to aerate, pinpoint and monitor the area. On thursday, march 21, 2013 at 08:41 the investigation identified a probable transmission main leak approximately 175' south of the transcontinental gas pipeline (tgpl) white plains gate station located at bronx street and mott street (wp).Transmission engineering, distribution engineering, gas control, major projects, technical operations, gerc and westchester gas operations participated in operational planning to identify the actions required to maintain supply to the distribution system as well as the actions required to repair the suspected 12" coupling believed to be the source of the leak. Repair procedure mpc-13-09 was initiated and on friday, march 22, 2013 at 10:16 the segment of transmission main was isolated and pressure reduced from 214 psi to 62 psi. Repair operations continued around-the-clock and a visible leak was confirmed on a 12" compression coupling. A welded repair sleeve was installed to secure the leak. A second welded repair sleeve was installed on a coupling not leaking but in close proximity as a precaution. On saturday, march 23, 2013 a preliminary mobile leak survey was performed in advance of pressure restoration and (2) leaks were found along the route of the transmission main. The leaks were investigated and it was determined the transmission main was not the source of the readings detected. A third t-1 was detected during pressure restoration and a 16" mpci hub was found to be the source of that leak. On monday, march 25, 2013 at 02:00 the isolated segment was returned to normal operating pressure. Gas control and pressure control are returning the regulator stations involved in this procedure to normal settings. There were no outages as a result of this operational plan. No evacuations, injuries or media attention were reported as a result of this event. The white plains fire department (wpfd) was notified and the wpfd responded per the transmission leak notification protocol and repair operations were reviewed. The US DOT and nys psc were notified and the psc responded to location. This was a serious level incident.
| Occurred At | 2013-03-21 08:41:00 |
|---|---|
| Year | 2013 |
| Report Received Date | 2013-06-03 00:00:00 |
| Iyear | 2013.0 |
| Report Number | 20130067.0 |
| Supplemental Number | 15675.0 |
| 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 | 2013-03-20 10:00:00 |
| Location Street Address | Bronx Street And Hamilton Avenue |
| Location City Name | White Plains |
| Location County Name | Westchester |
| Location State Abbreviation | NY |
| Location Postal Code | 10606 |
| Location Latitude | 41.03323 Google Maps OpenStreetMap |
| Location Longitude | -73.77553 Google Maps OpenStreetMap |
| Nrc Rpt Datetime | 2013-03-22 10:45:00 |
| Nrc Rpt Num | 1041813 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 9.8 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0.0 |
| Incident Identified Datetime | 2013-03-21 08:41:00 |
| On Site Datetime | 2013-03-21 08:41:00 |
| Federal | No |
| Location Type | Utility Right-Of-Way / Easement |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Pavement |
| Depth Of Cover | 51.0 |
| Crossing | No |
| Pipe Facility Type | Privately Owned |
| System Part Involved | Main |
| Installation Year | 1948.0 |
| Pipe Diameter | 12.0 |
| Pipe Specification | Unknown |
| Pipe Manufacturer | Unknown |
| 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 | 25000.0 |
| Est Cost Emergency | 5000.0 |
| Est Cost Other | 1500.0 |
| Est Cost Other Details | Materials |
| Est Cost Unintentional Release | 10.0 |
| Prpty | 31510.0 |
| Commercial Affected | 0.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 0.0 |
| Accident Psig | 214.0 |
| Normal Psig | 214.0 |
| 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 | Ground Patrol By Operator Or Its Contractor |
| 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 | Leak on a compression coupling |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Pipe, Weld, Or Joint Failure |
| Cause Details | Mechanical Joint Failure |
| Pwjf Failure Type | Mechanical Joint Failure |
| Mec Fitting Involved | Bolted |
| Mec Fitting Type | Coupling |
| Mec Manufacturer | Dresser |
| Mec Fitting Material | Other |
| Mec Fitting Material Detail | Materials Joined: 1st Steel, 2nd Steel |
| Additional Other Ind | Yes |
| Additional Factor Details | Compression Coupling Leak At Seal |
| Hydrotest Conducted Ind | No |
| 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 wednesday, march 20, 2013 leak survey detected 35% at the curb line and 25% in a bar-hole in the vicinity of a gas transmission main to the gas emergency response center (gerc). Gas distribution system (gds), gas construction and supervision were notified and responded. Gas construction conducted a leak investigation survey over the route of the 1948 12" steel transmission main (245 psi system) and the 16" medium pressure cast iron (mpci) main in the area. All subsurface structures in the area were checked and found clear; there were no buildings in the area. Gas control was notified and contingency case 39-a was initiated. Isolation valves 25977 and 25976 were staffed and gas control confirmed communication with remote operated valve (rov) 32717. Gas crews continued to aerate, pinpoint and monitor the area. On thursday, march 21, 2013 at 08:41 the investigation identified a probable transmission main leak approximately 175' south of the transcontinental gas pipeline (tgpl) white plains gate station located at bronx street and mott street (wp).Transmission engineering, distribution engineering, gas control, major projects, technical operations, gerc and westchester gas operations participated in operational planning to identify the actions required to maintain supply to the distribution system as well as the actions required to repair the suspected 12" coupling believed to be the source of the leak. Repair procedure mpc-13-09 was initiated and on friday, march 22, 2013 at 10:16 the segment of transmission main was isolated and pressure reduced from 214 psi to 62 psi. Repair operations continued around-the-clock and a visible leak was confirmed on a 12" compression coupling. A welded repair sleeve was installed to secure the leak. A second welded repair sleeve was installed on a coupling not leaking but in close proximity as a precaution. On saturday, march 23, 2013 a preliminary mobile leak survey was performed in advance of pressure restoration and (2) leaks were found along the route of the transmission main. The leaks were investigated and it was determined the transmission main was not the source of the readings detected. A third t-1 was detected during pressure restoration and a 16" mpci hub was found to be the source of that leak. On monday, march 25, 2013 at 02:00 the isolated segment was returned to normal operating pressure. Gas control and pressure control are returning the regulator stations involved in this procedure to normal settings. There were no outages as a result of this operational plan. No evacuations, injuries or media attention were reported as a result of this event. The white plains fire department (wpfd) was notified and the wpfd responded per the transmission leak notification protocol and repair operations were reviewed. The US DOT and nys psc were notified and the psc responded to location. This was a serious level incident. |
External Resources
PHMSA pipeline safety insights.
Product
Features
Company
All rights reserved. Copyright © by ClearPHMSA