GTG incident on 2024-07-23 — NE

Operator
Northern Natural Gas Co
Cause
Other Outside Force Damage
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities 0 injuries
Property damage (nominal)
$50,000
Incident datetime
2024-07-23 00:00 UTC
Report number
Location
NE
Narrative
The neb58801, dakota city #3 branch line, take off valve setting on the m570c, hooper to south sioux city, was struck by a nebraska state patrol vehicle on july 7, 2024, at approximately 23:30 hours. The driver was in pursuit at a high rate of speed and failed to navigate a curve striking the above grade facility. An operations communications center call was made, and operations field team members were dispatched. The vehicle was sitting approximately 5 feet from the setting. The m570c line was isolated at the homer compressor station (7.7 miles south) and at the south sioux city plant yard (0.72 miles north) and blown down to zero. In doing this, the service to dakota city #3 tbs was lost for approximately 500+residential and several industrial customers. Service to the tbs was restored at 22:30 on july 8, 2024. A 4-inch diameter pipe upstream riser tee below grade was broken. The patrol officer, driver sustained injuries, was treated at a local hospital and released to recover at home the same day. The 3rd party damage required replacing the entire valve setting above and below grade, valve and guarding.
Detailed record list
Report Received Date
2024-07-23 00:00:00
Iyear
2024
Report Number
20240094
Supplemental Number
40325
Report Type
Supplemental Final
Operator Id
Name
Northern Natural Gas Co
Operator Street Address
1111 South 103rd Street
Operator City Name
Omaha
Operator State Abbreviation
NE
Operator Postal Code
68124
Time Zone
Central
Daylight Savings Ind
Yes
Location Latitude
Location Longitude
Nrc Rpt Num
Additional Nrc Report Numbers
1404252
Commodity Released Type
Natural Gas
Unintentional Release
14355
Intentional Release
7380
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Status When Identified
Normal Operation, Includes Pauses During Maintenance
Shutdown Due Accident Ind
Yes
Communication State Fed Ind
No
Ignite Ind
No
Upstream Action Taken
Valve Closure
Downstream Action Taken
Valve Closure
Num Pub Evacuated
0
On Off Shore
Onshore
Onshore State Abbreviation
Ne
Onshore Postal Code
68731
Onshore City Name
Not Within A Municipality
Onshore County Name
Dakota
Designated Location
Milepost
Designated Name
0.86
Pipe Fac Name
Dakota City, Ne #3 Take-Off
Segment Name
Neb58801
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Aboveground
Incident Area Subtype
Typical Aboveground Facility Piping Or Appurtenance
Crossing
No
Pipe Facility Type
Interstate
System Part Involved
Onshore Pipeline, Including Valve Sites
Item Involved
Pipe
Pipe Type
Pipe Body
Pipe Diameter
4.5
Puddle Weld Ind
No
Pipe Wall Thickness
0.237
Pipe Smys
52000
Pipe Specification
5l
Pipe Seam Type
Longitudinal Erw - High Frequency
Pipe Manufacturer
Ipsco
Pipe Coating Type
Epoxy
Coating Applied Ind
No
Installation Year
2010
Manufactured Year
Unknown
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Connection Failure
Class Location Type
Class 2 Location
Could Be Hca
Yes
Determination Method
Method2
Pir Radius
93
Heat Damage Ind
No
Non Heat Damage Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
29715
Est Cost Intentional Release
15277
Est Cost Prop Damage
50000
Est Cost Emergency
100000
Est Cost Other
0
Gas Cost In Mcf
2.07
Prpty
194992
Num Persons Hosp Not Ovnght
1
Num Injured Treated By Emt
0
Num Resident Building Affctd
500
Num Business Building Affctd
10
Wildlife Impact Ind
No
Accident Psig
519
Gas Flow In Pipe In Mcf
5.1
Mop Psig
1000
Mop Cfr Section
192.619(A)(2)
Maop Established Date
2010-07-18 00:00:00
Maop Reversal Flow Ind
No
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
No
Gas Required Odorized Ind
No
Upstream Valve Type Ind
Manual
Downstream Valve Type Ind
Manual
Length Segment Isolated
43447
Internal Inspection Ind
No
Diameter Change Ind
Yes
Other Inspection Ind
Yes
Internal Inspection Details
4-Inch Diameter Pipe
Operation Complications Ind
No
Pipeline Function
Transmission System
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
Yes
Scada Conf Ind
Yes
Accident Identifier
Notification From Public
Investigation Status
Yes, specify investigation result(s): (select all that apply)
Invest Schedule Ind
Yes
Invest No Control Room Ind
Yes
Invest No Controller Ind
Yes
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Other Outside Force Damage
Cause Details
Damage By Car, Truck, Or Other Motorized Vehicle/equipment Not Engaged In Excavation
Outside Force Type
Damage By Car, Truck, Or Other Motorized Vehicle/equipment Not Engaged In Excavation
Vehicle Subtype
Third Party
Driver Issued Citation Ind
Unknown
Driver In Control Ind
No
Estimated Speed Unknown Ind
Yes
Vehicle Type
Passenger Car
Vehicle Travel From
Roadway
Vehicle Travel Distance Ft
250
Protections Installed Ind
Yes
Protection Bollards Post Ind
Yes
Preparer Name
J*** G******
Preparer Title
Sr Pipeline Safety Specialist
Preparer Email
J***********@n****.com
Preparer Telephone
4026811574
Local Contact Name
S**** M****
Local Contact Email
S**********@n****.com
Local Contact Telephone
402-530-2160
Authorizer Name
T** C******
Authorizer Title
Vp Pipeline Safety And Rist
Authorizer Telephone
4023987715
Authorizer Email
T*************@n****.com
Narrative
The neb58801, dakota city #3 branch line, take off valve setting on the m570c, hooper to south sioux city, was struck by a nebraska state patrol vehicle on july 7, 2024, at approximately 23:30 hours. The driver was in pursuit at a high rate of speed and failed to navigate a curve striking the above grade facility. An operations communications center call was made, and operations field team members were dispatched. The vehicle was sitting approximately 5 feet from the setting. The m570c line was isolated at the homer compressor station (7.7 miles south) and at the south sioux city plant yard (0.72 miles north) and blown down to zero. In doing this, the service to dakota city #3 tbs was lost for approximately 500+residential and several industrial customers. Service to the tbs was restored at 22:30 on july 8, 2024. A 4-inch diameter pipe upstream riser tee below grade was broken. The patrol officer, driver sustained injuries, was treated at a local hospital and released to recover at home the same day. The 3rd party damage required replacing the entire valve setting above and below grade, valve and guarding.
Report Received Date 2024-07-23 00:00:00
Iyear 2024
Report Number 20240094
Supplemental Number 40325
Report Type Supplemental Final
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
Time Zone Central
Daylight Savings Ind Yes
Location Latitude 42.429852 Google Maps OpenStreetMap
Location Longitude -96.424807 Google Maps OpenStreetMap
Nrc Rpt Num 1404046 NRC Report How to search
Additional Nrc Report Numbers 1404252
Commodity Released Type Natural Gas
Unintentional Release 14355
Intentional Release 7380
Accompanying Liquid 0
Fatality Ind No
Fatal 0
Injury Ind No
Injure 0
Status When Identified Normal Operation, Includes Pauses During Maintenance
Shutdown Due Accident Ind Yes
Communication State Fed Ind No
Ignite Ind No
Upstream Action Taken Valve Closure
Downstream Action Taken Valve Closure
Num Pub Evacuated 0
On Off Shore Onshore
Onshore State Abbreviation Ne
Onshore Postal Code 68731
Onshore City Name Not Within A Municipality
Onshore County Name Dakota
Designated Location Milepost
Designated Name 0.86
Pipe Fac Name Dakota City, Ne #3 Take-Off
Segment Name Neb58801
Federal No
Location Type Pipeline Right-Of-Way
Incident Area Type Aboveground
Incident Area Subtype Typical Aboveground Facility Piping Or Appurtenance
Crossing No
Pipe Facility Type Interstate
System Part Involved Onshore Pipeline, Including Valve Sites
Item Involved Pipe
Pipe Type Pipe Body
Pipe Diameter 4.5
Puddle Weld Ind No
Pipe Wall Thickness 0.237
Pipe Smys 52000
Pipe Specification 5l
Pipe Seam Type Longitudinal Erw - High Frequency
Pipe Manufacturer Ipsco
Pipe Coating Type Epoxy
Coating Applied Ind No
Installation Year 2010
Manufactured Year Unknown
Material Involved Carbon Steel
Release Type Leak
Leak Type Connection Failure
Class Location Type Class 2 Location
Could Be Hca Yes
Determination Method Method2
Pir Radius 93
Heat Damage Ind No
Non Heat Damage Ind No
Est Cost Oper Paid 0
Est Cost Unintentional Release 29715
Est Cost Intentional Release 15277
Est Cost Prop Damage 50000
Est Cost Emergency 100000
Est Cost Other 0
Gas Cost In Mcf 2.07
Prpty 194992
Num Persons Hosp Not Ovnght 1
Num Injured Treated By Emt 0
Num Resident Building Affctd 500
Num Business Building Affctd 10
Wildlife Impact Ind No
Accident Psig 519
Gas Flow In Pipe In Mcf 5.1
Mop Psig 1000
Mop Cfr Section 192.619(A)(2) View CFR 49 §192
Maop Established Date 2010-07-18 00:00:00
Maop Reversal Flow Ind No
Accident Pressure Pressure Did Not Exceed Maop
Pressure Restriction Ind No
Gas Required Odorized Ind No
Upstream Valve Type Ind Manual
Downstream Valve Type Ind Manual
Length Segment Isolated 43447
Internal Inspection Ind No
Diameter Change Ind Yes
Other Inspection Ind Yes
Internal Inspection Details 4-Inch Diameter Pipe
Operation Complications Ind No
Pipeline Function Transmission System
Scada In Place Ind Yes
Scada Operating Ind Yes
Scada Functional Ind Yes
Scada Detection Ind Yes
Scada Conf Ind Yes
Accident Identifier Notification From Public
Investigation Status Yes, specify investigation result(s): (select all that apply)
Invest Schedule Ind Yes
Invest No Control Room Ind Yes
Invest No Controller Ind Yes
Employee Drug Test Ind No
Contractor Drug Test Ind No
Cause Other Outside Force Damage
Cause Details Damage By Car, Truck, Or Other Motorized Vehicle/equipment Not Engaged In Excavation
Outside Force Type Damage By Car, Truck, Or Other Motorized Vehicle/equipment Not Engaged In Excavation
Vehicle Subtype Third Party
Driver Issued Citation Ind Unknown
Driver In Control Ind No
Estimated Speed Unknown Ind Yes
Vehicle Type Passenger Car
Vehicle Travel From Roadway
Vehicle Travel Distance Ft 250
Protections Installed Ind Yes
Protection Bollards Post Ind Yes
Preparer Name J*** G******
Preparer Title Sr Pipeline Safety Specialist
Preparer Email J***********@n****.com
Preparer Telephone 4026811574
Local Contact Name S**** M****
Local Contact Email S**********@n****.com
Local Contact Telephone 402-530-2160
Authorizer Name T** C******
Authorizer Title Vp Pipeline Safety And Rist
Authorizer Telephone 4023987715
Authorizer Email T*************@n****.com
Narrative The neb58801, dakota city #3 branch line, take off valve setting on the m570c, hooper to south sioux city, was struck by a nebraska state patrol vehicle on july 7, 2024, at approximately 23:30 hours. The driver was in pursuit at a high rate of speed and failed to navigate a curve striking the above grade facility. An operations communications center call was made, and operations field team members were dispatched. The vehicle was sitting approximately 5 feet from the setting. The m570c line was isolated at the homer compressor station (7.7 miles south) and at the south sioux city plant yard (0.72 miles north) and blown down to zero. In doing this, the service to dakota city #3 tbs was lost for approximately 500+residential and several industrial customers. Service to the tbs was restored at 22:30 on july 8, 2024. A 4-inch diameter pipe upstream riser tee below grade was broken. The patrol officer, driver sustained injuries, was treated at a local hospital and released to recover at home the same day. The 3rd party damage required replacing the entire valve setting above and below grade, valve and guarding.

All rights reserved. Copyright © by ClearPHMSA