Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2015-11-10 — NE
Operator
Northern Natural Gas Co
Cause
Notification Issue
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$5,000
Incident datetime
2015-11-10 09:12
Report number
Location
NE
Narrative
On november 10, 2015 at approximately 08:30 the pipeline was struck and damaged by a ditch witch rt95 chain type trencher. The operator of the equipment immediately shut off the trencher, left it in place against the pipeline, and retreated to safety. There was no fire, no injuries and no casualties. No one was evacuated from their home. The operator of the trencher, jaqs irrigation and trenching, was doing subcontract work for mussman excavating. Neither contractor made the required one-call. The pipeline is a 10-inch operating at about 500 psi at the time of the incident. The line hit was the only damage. The pipeline was 42-inches deep. The trencher tooth caused a 1-inch by 2-inch puncture. The damaged section was replaced with a 10-foot length of new pipe. About 5,000 mcf of natural gas was released due to the damage and during repairs. There were no service interruptions because the company used volume bottle trailers to provide temporary service to the town of western, ne.
Detailed record list
Report Received Date
2015-12-09 00:00:00
Iyear
2015
Report Number
20150145
Supplemental Number
17064
Report Type
Supplemental
Operator Id
13750
Name
Northern Natural Gas Co
Operator Street Address
1111 South 103rd Street
Operator City Name
Omaha
Operator State Abbreviation
NE
Operator Postal Code
68124
Local Datetime
2015-11-10 08:30:00
Location Latitude
40.453494
Location Longitude
-97.316222
Nrc Rpt Num
1133046
Nrc Rpt Datetime
2015-11-10 09:45:00
Commodity Released Type
Natural Gas
Unintentional Release
4000
Intentional Release
1300
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2015-11-10 13:41:00
Restart Datetime
2015-11-11 08:00:00
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Incident Identified Datetime
2015-11-10 09:12:00
On Site Datetime
2015-11-10 10:12:00
On Off Shore
Onshore
Onshore State Abbreviation
Ne
Onshore Postal Code
38453
Onshore City Name
Not Within A Municipality
Onshore County Name
Saline
Designated Location
Milepost
Designated Name
Mp 35.53
Pipe Fac Name
Kansas-Nebraska 10-Inch
Segment Name
Neb49401
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
42
Crossing
No
Pipe Facility Type
Interstate
System Part Involved
Onshore Pipeline, Including Valve Sites
Item Involved
Pipe
Pipe Type
Pipe Body
Pipe Diameter
10
Pipe Wall Thickness
0.188
Pipe Smys
42000
Pipe Specification
Api 5lx
Pipe Seam Type
Longitudinal Erw - Low Frequency
Pipe Manufacturer
Youngstown
Pipe Coating Type
Coal Tar
Installation Year
1962
Manufactured Year
1962
Material Involved
Carbon Steel
Release Type
Mechanical Puncture
Puncture Axial
1
Puncture Circum
2
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
195
Heat Damage Ind
No
Non Heat Damage Ind
No
Hca Fatalities Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
12000
Est Cost Intentional Release
3900
Est Cost Prop Damage
5000
Est Cost Emergency
97947
Est Cost Other
0
Prpty
118847
Accident Psig
502
Mop Psig
800
Mop Cfr Section
192.619(A)(1)
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
No
Upstream Valve Type Ind
Manual
Downstream Valve Type Ind
Manual
Length Segment Isolated
105600
Internal Inspection 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
Yes
Accident Identifier
Notification From Third Party That Caused The Incident
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 third party that caused the incident immediately dialed 911. Our first notification came from them.
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
No
Notify Cga Dirt
No
Private Row Ind
Yes
Private Subtype
Private Landowner
Excavator Type
Contractor
Excavator Equipment
Trencher
Work Performed
Drainage
One Call Notified Ind
No
Service Interruption
No
Root Cause Category
Notification Issue
Root Cause Type
No Notification Made To The One-Call Center/811
Preparer Name
J*** A G******
Preparer Title
Sr. Corrosion Specialist
Preparer Email
J***********@n****.com
Preparer Telephone
402-398-7494
Authorizer Name
T***** C******
Authorizer Title
Sr. Director Of Pipeline Safety And Risk
Authorizer Telephone
402-398-7715
Authorizer Email
T*************@n****.com
Narrative
On november 10, 2015 at approximately 08:30 the pipeline was struck and damaged by a ditch witch rt95 chain type trencher. The operator of the equipment immediately shut off the trencher, left it in place against the pipeline, and retreated to safety. There was no fire, no injuries and no casualties. No one was evacuated from their home. The operator of the trencher, jaqs irrigation and trenching, was doing subcontract work for mussman excavating. Neither contractor made the required one-call. The pipeline is a 10-inch operating at about 500 psi at the time of the incident. The line hit was the only damage. The pipeline was 42-inches deep. The trencher tooth caused a 1-inch by 2-inch puncture. The damaged section was replaced with a 10-foot length of new pipe. About 5,000 mcf of natural gas was released due to the damage and during repairs. There were no service interruptions because the company used volume bottle trailers to provide temporary service to the town of western, ne.
| Report Received Date | 2015-12-09 00:00:00 |
|---|---|
| Iyear | 2015 |
| Report Number | 20150145 |
| Supplemental Number | 17064 |
| Report Type | Supplemental |
| Operator Id | 13750 PHMSA Enforcement |
| Name | Northern Natural Gas Co |
| Operator Street Address | 1111 South 103rd Street |
| Operator City Name | Omaha |
| Operator State Abbreviation | NE |
| Operator Postal Code | 68124 |
| Local Datetime | 2015-11-10 08:30:00 |
| Location Latitude | 40.453494 Google Maps OpenStreetMap |
| Location Longitude | -97.316222 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1133046 NRC Report How to search |
| Nrc Rpt Datetime | 2015-11-10 09:45:00 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 4000 |
| Intentional Release | 1300 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2015-11-10 13:41:00 |
| Restart Datetime | 2015-11-11 08:00:00 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2015-11-10 09:12:00 |
| On Site Datetime | 2015-11-10 10:12:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Ne |
| Onshore Postal Code | 38453 |
| Onshore City Name | Not Within A Municipality |
| Onshore County Name | Saline |
| Designated Location | Milepost |
| Designated Name | Mp 35.53 |
| Pipe Fac Name | Kansas-Nebraska 10-Inch |
| Segment Name | Neb49401 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 42 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Pipe Diameter | 10 |
| Pipe Wall Thickness | 0.188 |
| Pipe Smys | 42000 |
| Pipe Specification | Api 5lx |
| Pipe Seam Type | Longitudinal Erw - Low Frequency |
| Pipe Manufacturer | Youngstown |
| Pipe Coating Type | Coal Tar |
| Installation Year | 1962 |
| Manufactured Year | 1962 |
| Material Involved | Carbon Steel |
| Release Type | Mechanical Puncture |
| Puncture Axial | 1 |
| Puncture Circum | 2 |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 195 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Hca Fatalities Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 12000 |
| Est Cost Intentional Release | 3900 |
| Est Cost Prop Damage | 5000 |
| Est Cost Emergency | 97947 |
| Est Cost Other | 0 |
| Prpty | 118847 |
| Accident Psig | 502 |
| Mop Psig | 800 |
| Mop Cfr Section | 192.619(A)(1) 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 | 105600 |
| Internal Inspection 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 | Yes |
| Accident Identifier | Notification From Third Party That Caused The Incident |
| 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 third party that caused the incident immediately dialed 911. Our first notification came from them. |
| 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 | No |
| Notify Cga Dirt | No |
| Private Row Ind | Yes |
| Private Subtype | Private Landowner |
| Excavator Type | Contractor |
| Excavator Equipment | Trencher |
| Work Performed | Drainage |
| One Call Notified Ind | No |
| Service Interruption | No |
| Root Cause Category | Notification Issue |
| Root Cause Type | No Notification Made To The One-Call Center/811 |
| Preparer Name | J*** A G****** |
| Preparer Title | Sr. Corrosion Specialist |
| Preparer Email | J***********@n****.com |
| Preparer Telephone | 402-398-7494 |
| Authorizer Name | T***** C****** |
| Authorizer Title | Sr. Director Of Pipeline Safety And Risk |
| Authorizer Telephone | 402-398-7715 |
| Authorizer Email | T*************@n****.com |
| Narrative | On november 10, 2015 at approximately 08:30 the pipeline was struck and damaged by a ditch witch rt95 chain type trencher. The operator of the equipment immediately shut off the trencher, left it in place against the pipeline, and retreated to safety. There was no fire, no injuries and no casualties. No one was evacuated from their home. The operator of the trencher, jaqs irrigation and trenching, was doing subcontract work for mussman excavating. Neither contractor made the required one-call. The pipeline is a 10-inch operating at about 500 psi at the time of the incident. The line hit was the only damage. The pipeline was 42-inches deep. The trencher tooth caused a 1-inch by 2-inch puncture. The damaged section was replaced with a 10-foot length of new pipe. About 5,000 mcf of natural gas was released due to the damage and during repairs. There were no service interruptions because the company used volume bottle trailers to provide temporary service to the town of western, ne. |
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