Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2016-08-29 — VA
Operator
Columbia Gas Of Virginia Inc
Cause
Locating Issue
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$4,000
Incident datetime
2016-08-29 16:33
Report number
Location
VA, PRINCE WILLIAM
Narrative
Third party contractor (always prepared) was boring in fiber conduit. During back reaming operations, head impacted 4" plastic main and tore 3 x 5 hole in top. This section of main was not located and thus not spotted prior to bore. Wgl 8" main had to be by passed in order to safely make repairs. Wgl made safe. Cgv made repairs to 4" main damaged after demark valve. No outages or other damages.
Detailed record list
Occurred At
2016-08-29 16:33:00
Year
2016
Report Received Date
2016-09-12 00:00:00
Iyear
2016.0
Report Number
20160088.0
Supplemental Number
16388.0
Report Type
Original Final
Operator Id
2604
Name
Columbia Gas Of Virginia Inc
Operator Street Address
1809 Coyote Drive
Operator City Name
Chester
Operator State Abbreviation
VA
Operator Postal Code
23836
Local Datetime
2016-08-29 16:00:00
Location Street Address
Signal Hill Rd
Location City Name
Manassas
Location County Name
Prince William
Location State Abbreviation
VA
Location Postal Code
20110
Location Latitude
38.748834
Location Longitude
-77.448281
Nrc Rpt Datetime
2016-08-30 16:24:00
Nrc Rpt Num
1157709
Commodity Released Type
Natural Gas
Unintentional Release
46.33
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
40.0
Incident Identified Datetime
2016-08-29 16:33:00
On Site Datetime
2016-08-29 16:50:00
Federal
No
Location Type
Utility Right-Of-Way / Easement
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
67.0
Crossing
No
Pipe Facility Type
Investor Owned
System Part Involved
Main
Installation Year
1994.0
Pipe Diameter
4.0
Pipe Specification
Unknown
Pipe Manufacturer
Unknown
Material Involved
Plastic
Plastic Type
Other
Plastic Details
Adyla
Wt Plastic Unknown Ind
Unknown
Release Type
Mechanical Puncture
Puncture Axial
3.0
Puncture Circum
5.0
Class Location Type
Class 4 Location
Est Cost Oper Paid
0.0
Est Cost Prop Damage
4000.0
Est Cost Emergency
0.0
Est Cost Other
0.0
Est Cost Unintentional Release
11675.0
Prpty
15675.0
Commercial Affected
0.0
Industrial Affected
0.0
Residences Affected
0.0
Accident Psig
50.0
Normal Psig
50.0
Mop Psig
60.0
Accident Pressure
Pressure Did Not Exceed Maop
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
Yes
Scada Conf Ind
Yes
Accident Identifier
Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Or Pack Calculations)
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
Gas control identified low pressure by alarm which was investigated which revealed damage to our facility.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Excavation Damage
Cause Details
Excavation Damage By Third Party
Ex Party Type
Excavation Damage By Third Party
Prior Notification Ind
Yes
One Call System Ind
Yes
Notify Cga Dirt
No
Public Util Easement Row Ind
Yes
Excavator Type
Contractor
Excavator Equipment
Directional Drilling
Work Performed
Cable Tv
One Call Notified Ind
Yes
One Call Ticket Num
623601311
Locator Type
Contract Locator
Visible Marks
No
Service Interruption
No
Root Cause Category
Locating Issue
Root Cause Type
Facility Not Marked Due To Locator Error
Preparer Name
G** D*****
Preparer Email
G******@n*******.com
Preparer Telephone
804-314-9390
Authorizer Name
G** D*****
Authorizer Telephone
804-314-9390
Authorizer Email
No Email Address
Narrative
Third party contractor (always prepared) was boring in fiber conduit. During back reaming operations, head impacted 4" plastic main and tore 3 x 5 hole in top. This section of main was not located and thus not spotted prior to bore. Wgl 8" main had to be by passed in order to safely make repairs. Wgl made safe. Cgv made repairs to 4" main damaged after demark valve. No outages or other damages.
| Occurred At | 2016-08-29 16:33:00 |
|---|---|
| Year | 2016 |
| Report Received Date | 2016-09-12 00:00:00 |
| Iyear | 2016.0 |
| Report Number | 20160088.0 |
| Supplemental Number | 16388.0 |
| Report Type | Original Final |
| Operator Id | 2604 PHMSA Enforcement |
| Name | Columbia Gas Of Virginia Inc |
| Operator Street Address | 1809 Coyote Drive |
| Operator City Name | Chester |
| Operator State Abbreviation | VA |
| Operator Postal Code | 23836 |
| Local Datetime | 2016-08-29 16:00:00 |
| Location Street Address | Signal Hill Rd |
| Location City Name | Manassas |
| Location County Name | Prince William |
| Location State Abbreviation | VA |
| Location Postal Code | 20110 |
| Location Latitude | 38.748834 Google Maps OpenStreetMap |
| Location Longitude | -77.448281 Google Maps OpenStreetMap |
| Nrc Rpt Datetime | 2016-08-30 16:24:00 |
| Nrc Rpt Num | 1157709 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 46.33 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 40.0 |
| Incident Identified Datetime | 2016-08-29 16:33:00 |
| On Site Datetime | 2016-08-29 16:50:00 |
| Federal | No |
| Location Type | Utility Right-Of-Way / Easement |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 67.0 |
| Crossing | No |
| Pipe Facility Type | Investor Owned |
| System Part Involved | Main |
| Installation Year | 1994.0 |
| Pipe Diameter | 4.0 |
| Pipe Specification | Unknown |
| Pipe Manufacturer | Unknown |
| Material Involved | Plastic |
| Plastic Type | Other |
| Plastic Details | Adyla |
| Wt Plastic Unknown Ind | Unknown |
| Release Type | Mechanical Puncture |
| Puncture Axial | 3.0 |
| Puncture Circum | 5.0 |
| Class Location Type | Class 4 Location |
| Est Cost Oper Paid | 0.0 |
| Est Cost Prop Damage | 4000.0 |
| Est Cost Emergency | 0.0 |
| Est Cost Other | 0.0 |
| Est Cost Unintentional Release | 11675.0 |
| Prpty | 15675.0 |
| Commercial Affected | 0.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 0.0 |
| Accident Psig | 50.0 |
| Normal Psig | 50.0 |
| Mop Psig | 60.0 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | Yes |
| Scada Conf Ind | Yes |
| Accident Identifier | Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Or Pack Calculations) |
| 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 | Gas control identified low pressure by alarm which was investigated which revealed damage to our facility. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Excavation Damage |
| Cause Details | Excavation Damage By Third Party |
| Ex Party Type | Excavation Damage By Third Party |
| Prior Notification Ind | Yes |
| One Call System Ind | Yes |
| Notify Cga Dirt | No |
| Public Util Easement Row Ind | Yes |
| Excavator Type | Contractor |
| Excavator Equipment | Directional Drilling |
| Work Performed | Cable Tv |
| One Call Notified Ind | Yes |
| One Call Ticket Num | 623601311 |
| Locator Type | Contract Locator |
| Visible Marks | No |
| Service Interruption | No |
| Root Cause Category | Locating Issue |
| Root Cause Type | Facility Not Marked Due To Locator Error |
| Preparer Name | G** D***** |
| Preparer Email | G******@n*******.com |
| Preparer Telephone | 804-314-9390 |
| Authorizer Name | G** D***** |
| Authorizer Telephone | 804-314-9390 |
| Authorizer Email | No Email Address |
| Narrative | Third party contractor (always prepared) was boring in fiber conduit. During back reaming operations, head impacted 4" plastic main and tore 3 x 5 hole in top. This section of main was not located and thus not spotted prior to bore. Wgl 8" main had to be by passed in order to safely make repairs. Wgl made safe. Cgv made repairs to 4" main damaged after demark valve. No outages or other damages. |
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