Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2015-09-16 — TX
Operator
Columbia Gas Transmission, Llc
Cause
Locating Issue
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$3,000
Incident datetime
2015-09-16 11:00
Report number
Location
TX
Narrative
On september 16, 2015, a columbia gas transmission, llc (columbia) transmission pipeline was subject to unintended release of natural gas (material) into atmosphere due to a damage to an old tap by columbia personnel. The site was underwork in preparations for a new tap. The material did not ignite and the columbia personnel notified the local emergency responders (to secure the area) and the monitoring center. Emergency valves were operated to isolate the affected segment. After isolating the affected segment, necessary repair steps were implemented where a pre-tested pipe was installed. The pipeline was repaired, purged and returned to service after approximately four hours of disrupted service and the local distribution company (ldc) re-established service to their customers. An investigation was initiated to identify the causal factors leading to the damage of the old tap and how it can be prevented from re-occurring in similar future applications. Even though the total amount of material unintentionally released into atmosphere and cost of damages did not exceed the reporting threshold, columbia reported this event as an incident due to the number of ldc customers affected by this disruption of service. Supplemental information: on 10/19/2015 as a follow-up to the incident, an internal columbia pipeline group "safety alert" was release to cpg employees describing the event and warning employees to use caution when mechanically excavating, particularly around stopple fittings and to suspect, and watch for side connect bypasses.
Detailed record list
Report Received Date
2015-10-15 00:00:00
Iyear
2015
Report Number
20150123
Supplemental Number
17599
Report Type
Supplemental Final
Operator Id
2616
Name
Columbia Gas Transmission, Llc
Operator Street Address
700 Louisiana St. Suite 700
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Local Datetime
2015-09-16 11:00:00
Location Latitude
38.893292
Location Longitude
-79.84319
Nrc Rpt Num
1128651
Nrc Rpt Datetime
2015-09-16 14:06:00
Commodity Released Type
Natural Gas
Unintentional Release
107
Intentional Release
0
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2015-09-16 12:25:00
Restart Datetime
2015-09-16 14:45:00
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Incident Identified Datetime
2015-09-16 11:00:00
On Site Datetime
2015-09-16 11:00:00
On Off Shore
Onshore
Onshore State Abbreviation
Wv
Onshore Postal Code
26241
Onshore City Name
Elkins
Onshore County Name
Randolph
Designated Location
Milepost
Designated Name
18862
Pipe Fac Name
Line 8223
Segment Name
8223-010
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Exposed Due To Excavation
Crossing
No
Pipe Facility Type
Interstate
System Part Involved
Belowground Storage, Including Associated Equipment And Piping
Item Involved
Pipe
Pipe Type
Pipe Body
Pipe Diameter
8
Pipe Wall Thickness
0.25
Pipe Specification
Unknown
Pipe Seam Type
Longitudinal Erw - Unknown Frequency
Pipe Manufacturer
Unknown
Pipe Coating Type
None
Installation Year
1974
Manufactured Year
Unknown
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Other
Leak Type Other
2-In Tap
Class Location Type
Class 3 Location
Could Be Hca
No
Pir Radius
67
Heat Damage Ind
No
Non Heat Damage Ind
No
Hca Fatalities Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
273
Est Cost Intentional Release
0
Est Cost Prop Damage
3000
Est Cost Emergency
0
Est Cost Other
0
Prpty
3273
Accident Psig
147
Mop Psig
150
Mop Cfr Section
192.619(A)(2)
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
No
Pipeline Function
Transmission System
Scada In Place Ind
No
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
Investigation Status
No, the facility was not monitored by a controller(s) at the time of the incident
Employee Drug Test Ind
Yes
Contractor Drug Test Ind
No
Num Employees Tested
3
Num Employees Failed
0
Cause
Excavation Damage
Cause Details
Excavation Damage By Operator (First Party)
Ex Party Type
Excavation Damage By Operator (First Party)
Notify Cga Dirt
No
Pipeline Easement Row Ind
Yes
Excavator Type
Utility
Excavator Equipment
Backhoe/trackhoe
Work Performed
Natural Gas
One Call Notified Ind
Yes
One Call Ticket Num
1525273220
Locator Type
Utility Owner
Visible Marks
Yes
Service Interruption
Yes
Service Interruption Hours
4
Root Cause Category
Locating Issue
Root Cause Type
Facility Not Marked Due To Incorrect Facility Records/maps
Preparer Name
C**** L***
Preparer Title
Us Regulatory Compliance Specialist
Preparer Email
C*********@t**********.com
Preparer Telephone
(304) 722-8530
Authorizer Name
L** R*****
Authorizer Title
Manager
Authorizer Telephone
(832) 320-5315
Authorizer Email
L*********@t**********.com
Narrative
On september 16, 2015, a columbia gas transmission, llc (columbia) transmission pipeline was subject to unintended release of natural gas (material) into atmosphere due to a damage to an old tap by columbia personnel. The site was underwork in preparations for a new tap. The material did not ignite and the columbia personnel notified the local emergency responders (to secure the area) and the monitoring center. Emergency valves were operated to isolate the affected segment. After isolating the affected segment, necessary repair steps were implemented where a pre-tested pipe was installed. The pipeline was repaired, purged and returned to service after approximately four hours of disrupted service and the local distribution company (ldc) re-established service to their customers. An investigation was initiated to identify the causal factors leading to the damage of the old tap and how it can be prevented from re-occurring in similar future applications. Even though the total amount of material unintentionally released into atmosphere and cost of damages did not exceed the reporting threshold, columbia reported this event as an incident due to the number of ldc customers affected by this disruption of service. Supplemental information: on 10/19/2015 as a follow-up to the incident, an internal columbia pipeline group "safety alert" was release to cpg employees describing the event and warning employees to use caution when mechanically excavating, particularly around stopple fittings and to suspect, and watch for side connect bypasses.
| Report Received Date | 2015-10-15 00:00:00 |
|---|---|
| Iyear | 2015 |
| Report Number | 20150123 |
| Supplemental Number | 17599 |
| Report Type | Supplemental Final |
| Operator Id | 2616 PHMSA Enforcement |
| Name | Columbia Gas Transmission, Llc |
| Operator Street Address | 700 Louisiana St. Suite 700 |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77002 |
| Local Datetime | 2015-09-16 11:00:00 |
| Location Latitude | 38.893292 Google Maps OpenStreetMap |
| Location Longitude | -79.84319 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1128651 NRC Report How to search |
| Nrc Rpt Datetime | 2015-09-16 14:06:00 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 107 |
| Intentional Release | 0 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2015-09-16 12:25:00 |
| Restart Datetime | 2015-09-16 14:45:00 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2015-09-16 11:00:00 |
| On Site Datetime | 2015-09-16 11:00:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Wv |
| Onshore Postal Code | 26241 |
| Onshore City Name | Elkins |
| Onshore County Name | Randolph |
| Designated Location | Milepost |
| Designated Name | 18862 |
| Pipe Fac Name | Line 8223 |
| Segment Name | 8223-010 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Exposed Due To Excavation |
| Crossing | No |
| Pipe Facility Type | Interstate |
| System Part Involved | Belowground Storage, Including Associated Equipment And Piping |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Pipe Diameter | 8 |
| Pipe Wall Thickness | 0.25 |
| Pipe Specification | Unknown |
| Pipe Seam Type | Longitudinal Erw - Unknown Frequency |
| Pipe Manufacturer | Unknown |
| Pipe Coating Type | None |
| Installation Year | 1974 |
| Manufactured Year | Unknown |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Other |
| Leak Type Other | 2-In Tap |
| Class Location Type | Class 3 Location |
| Could Be Hca | No |
| Pir Radius | 67 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Hca Fatalities Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 273 |
| Est Cost Intentional Release | 0 |
| Est Cost Prop Damage | 3000 |
| Est Cost Emergency | 0 |
| Est Cost Other | 0 |
| Prpty | 3273 |
| Accident Psig | 147 |
| Mop Psig | 150 |
| Mop Cfr Section | 192.619(A)(2) View CFR 49 §192 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Pressure Restriction Ind | No |
| Pipeline Function | Transmission System |
| Scada In Place Ind | No |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| Investigation Status | No, the facility was not monitored by a controller(s) at the time of the incident |
| Employee Drug Test Ind | Yes |
| Contractor Drug Test Ind | No |
| Num Employees Tested | 3 |
| Num Employees Failed | 0 |
| Cause | Excavation Damage |
| Cause Details | Excavation Damage By Operator (First Party) |
| Ex Party Type | Excavation Damage By Operator (First Party) |
| Notify Cga Dirt | No |
| Pipeline Easement Row Ind | Yes |
| Excavator Type | Utility |
| Excavator Equipment | Backhoe/trackhoe |
| Work Performed | Natural Gas |
| One Call Notified Ind | Yes |
| One Call Ticket Num | 1525273220 |
| Locator Type | Utility Owner |
| Visible Marks | Yes |
| Service Interruption | Yes |
| Service Interruption Hours | 4 |
| Root Cause Category | Locating Issue |
| Root Cause Type | Facility Not Marked Due To Incorrect Facility Records/maps |
| Preparer Name | C**** L*** |
| Preparer Title | Us Regulatory Compliance Specialist |
| Preparer Email | C*********@t**********.com |
| Preparer Telephone | (304) 722-8530 |
| Authorizer Name | L** R***** |
| Authorizer Title | Manager |
| Authorizer Telephone | (832) 320-5315 |
| Authorizer Email | L*********@t**********.com |
| Narrative | On september 16, 2015, a columbia gas transmission, llc (columbia) transmission pipeline was subject to unintended release of natural gas (material) into atmosphere due to a damage to an old tap by columbia personnel. The site was underwork in preparations for a new tap. The material did not ignite and the columbia personnel notified the local emergency responders (to secure the area) and the monitoring center. Emergency valves were operated to isolate the affected segment. After isolating the affected segment, necessary repair steps were implemented where a pre-tested pipe was installed. The pipeline was repaired, purged and returned to service after approximately four hours of disrupted service and the local distribution company (ldc) re-established service to their customers. An investigation was initiated to identify the causal factors leading to the damage of the old tap and how it can be prevented from re-occurring in similar future applications. Even though the total amount of material unintentionally released into atmosphere and cost of damages did not exceed the reporting threshold, columbia reported this event as an incident due to the number of ldc customers affected by this disruption of service. Supplemental information: on 10/19/2015 as a follow-up to the incident, an internal columbia pipeline group "safety alert" was release to cpg employees describing the event and warning employees to use caution when mechanically excavating, particularly around stopple fittings and to suspect, and watch for side connect bypasses. |
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