Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2019-08-15 — NY
Operator
Niagara Mohawk Power Corp
Cause
Excavation Issue
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$61,500
Incident datetime
2019-08-15 11:55
Report number
Location
NY, RENSSELEAR
Narrative
On 8/15/2019, a national grid crew was impacting shale to install a 4" distribution gas main for a main replacement job in upstate ny. The impactor head, incorrectly set to "automatic", made contact with a national grid transmission gas main, which was previously exposed, and resulted in an uncontrolled release of gas to the atmosphere. Approx. 4-6 homes were temporarily evacuated and allowed to return at 15:20 the same day. The gas transmission pipeline was shut down for repairs. The damaged pipeline was replaced with a new cylinder section. No customer services were impacted.
Detailed record list
Occurred At
2019-08-15 11:55:00
Year
2019
Report Received Date
2019-10-11 00:00:00
Iyear
2019.0
Report Number
20190117.0
Supplemental Number
32806.0
Report Type
Original Final
Operator Id
13480
Name
Niagara Mohawk Power Corp
Operator Street Address
300 Erie Boulevard West
Operator City Name
Syracuse
Operator State Abbreviation
NY
Operator Postal Code
13202
Local Datetime
2019-08-15 11:55:00
Location Street Address
47 Ingalls Avenue
Location City Name
Troy
Location County Name
Rensselear
Location State Abbreviation
NY
Location Postal Code
12180
Location Latitude
42.747073
Location Longitude
-73.681105
Nrc Rpt Datetime
2019-10-04 16:10:00
Nrc Rpt Num
1260268
Commodity Released Type
Natural Gas
Unintentional Release
800.0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
6.0
Incident Identified Datetime
2019-08-15 11:55:00
On Site Datetime
2019-08-15 11:55:00
Federal
No
Location Type
Public Property
Incident Area Type
Underground
Incident Area Subtype
Under Pavement
Depth Of Cover
40.0
Crossing
No
Pipe Facility Type
Investor Owned
System Part Involved
Main
Installation Year
1953.0
Pipe Diameter
12.0
Pipe Specification
Api 5l Grade B
Pipe Manufacturer
Unknown
Material Involved
Steel
Steel Seam Type
Seamless
Steel Seam Type Details
Seamless
Wt Steel
0.33
Release Type
Mechanical Puncture
Puncture Axial
1.5
Puncture Circum
1.5
Class Location Type
Class 3 Location
Est Cost Oper Paid
0.0
Est Cost Prop Damage
61500.0
Est Cost Emergency
2500.0
Est Cost Other
0.0
Est Cost Unintentional Release
3525.0
Prpty
67525.0
Commercial Affected
0.0
Industrial Affected
0.0
Residences Affected
0.0
Accident Psig
210.0
Normal Psig
210.0
Mop Psig
225.0
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
Notification From Public
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
The incident was not caused by controller actions or control room issues.
Employee Drug Test Ind
Yes
Num Employees Tested
1
Num Employees Failed
0
Contractor Drug Test Ind
No
Cause
Excavation Damage
Cause Details
Excavation Damage By Operator (First Party)
Ex Party Type
Excavation Damage By Operator (First Party)
Ex Hydrotest Leak Survey Date
2019-04-20 00:00:00
Ex Hydrotest Conducted Ind
No
Notify Cga Dirt
No
Public Row Ind
Yes
Public Subtype
City Street
Excavator Type
Utility
Excavator Equipment
Backhoe/trackhoe
Work Performed
Natural Gas
One Call Notified Ind
Yes
One Call Ticket Num
5.21955e+11
One Call Center Name
Dig Safely New York
Locator Type
Contract Locator
Visible Marks
Yes
Service Interruption
No
Root Cause Category
Excavation Issue
Root Cause Type
Improper Excavation Practice Not Listed Above
Preparer Name
C****** B*****
Preparer Title
Principal Program Manager Gas Work Methods
Preparer Email
C*************@n***********.com
Preparer Telephone
6317703549
Authorizer Name
C****** B*****
Authorizer Title
Principal Program Manager Gas Work Methods
Authorizer Telephone
6317703549
Authorizer Email
C*************@n***********.com
Narrative
On 8/15/2019, a national grid crew was impacting shale to install a 4" distribution gas main for a main replacement job in upstate ny. The impactor head, incorrectly set to "automatic", made contact with a national grid transmission gas main, which was previously exposed, and resulted in an uncontrolled release of gas to the atmosphere. Approx. 4-6 homes were temporarily evacuated and allowed to return at 15:20 the same day. The gas transmission pipeline was shut down for repairs. The damaged pipeline was replaced with a new cylinder section. No customer services were impacted.
| Occurred At | 2019-08-15 11:55:00 |
|---|---|
| Year | 2019 |
| Report Received Date | 2019-10-11 00:00:00 |
| Iyear | 2019.0 |
| Report Number | 20190117.0 |
| Supplemental Number | 32806.0 |
| Report Type | Original Final |
| Operator Id | 13480 PHMSA Enforcement |
| Name | Niagara Mohawk Power Corp |
| Operator Street Address | 300 Erie Boulevard West |
| Operator City Name | Syracuse |
| Operator State Abbreviation | NY |
| Operator Postal Code | 13202 |
| Local Datetime | 2019-08-15 11:55:00 |
| Location Street Address | 47 Ingalls Avenue |
| Location City Name | Troy |
| Location County Name | Rensselear |
| Location State Abbreviation | NY |
| Location Postal Code | 12180 |
| Location Latitude | 42.747073 Google Maps OpenStreetMap |
| Location Longitude | -73.681105 Google Maps OpenStreetMap |
| Nrc Rpt Datetime | 2019-10-04 16:10:00 |
| Nrc Rpt Num | 1260268 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 800.0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 6.0 |
| Incident Identified Datetime | 2019-08-15 11:55:00 |
| On Site Datetime | 2019-08-15 11:55:00 |
| Federal | No |
| Location Type | Public Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Pavement |
| Depth Of Cover | 40.0 |
| Crossing | No |
| Pipe Facility Type | Investor Owned |
| System Part Involved | Main |
| Installation Year | 1953.0 |
| Pipe Diameter | 12.0 |
| Pipe Specification | Api 5l Grade B |
| Pipe Manufacturer | Unknown |
| Material Involved | Steel |
| Steel Seam Type | Seamless |
| Steel Seam Type Details | Seamless |
| Wt Steel | 0.33 |
| Release Type | Mechanical Puncture |
| Puncture Axial | 1.5 |
| Puncture Circum | 1.5 |
| Class Location Type | Class 3 Location |
| Est Cost Oper Paid | 0.0 |
| Est Cost Prop Damage | 61500.0 |
| Est Cost Emergency | 2500.0 |
| Est Cost Other | 0.0 |
| Est Cost Unintentional Release | 3525.0 |
| Prpty | 67525.0 |
| Commercial Affected | 0.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 0.0 |
| Accident Psig | 210.0 |
| Normal Psig | 210.0 |
| Mop Psig | 225.0 |
| 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 | Notification From Public |
| 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 | The incident was not caused by controller actions or control room issues. |
| Employee Drug Test Ind | Yes |
| Num Employees Tested | 1 |
| Num Employees Failed | 0 |
| Contractor Drug Test Ind | No |
| Cause | Excavation Damage |
| Cause Details | Excavation Damage By Operator (First Party) |
| Ex Party Type | Excavation Damage By Operator (First Party) |
| Ex Hydrotest Leak Survey Date | 2019-04-20 00:00:00 |
| Ex Hydrotest Conducted Ind | No |
| Notify Cga Dirt | No |
| Public Row Ind | Yes |
| Public Subtype | City Street |
| Excavator Type | Utility |
| Excavator Equipment | Backhoe/trackhoe |
| Work Performed | Natural Gas |
| One Call Notified Ind | Yes |
| One Call Ticket Num | 5.21955e+11 |
| One Call Center Name | Dig Safely New York |
| Locator Type | Contract Locator |
| Visible Marks | Yes |
| Service Interruption | No |
| Root Cause Category | Excavation Issue |
| Root Cause Type | Improper Excavation Practice Not Listed Above |
| Preparer Name | C****** B***** |
| Preparer Title | Principal Program Manager Gas Work Methods |
| Preparer Email | C*************@n***********.com |
| Preparer Telephone | 6317703549 |
| Authorizer Name | C****** B***** |
| Authorizer Title | Principal Program Manager Gas Work Methods |
| Authorizer Telephone | 6317703549 |
| Authorizer Email | C*************@n***********.com |
| Narrative | On 8/15/2019, a national grid crew was impacting shale to install a 4" distribution gas main for a main replacement job in upstate ny. The impactor head, incorrectly set to "automatic", made contact with a national grid transmission gas main, which was previously exposed, and resulted in an uncontrolled release of gas to the atmosphere. Approx. 4-6 homes were temporarily evacuated and allowed to return at 15:20 the same day. The gas transmission pipeline was shut down for repairs. The damaged pipeline was replaced with a new cylinder section. No customer services were impacted. |
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