Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2025-09-20 — TX
Operator
Colorado Interstate Gas Co
Cause
Other Incident Cause
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$0
Incident datetime
2025-09-20 23:40
Report number
Location
TX
Narrative
Cig 5a pipeline released 97,506 mcf. Ntsb is currently investigating. Pipeline is currently out of service. Supplemental report will be filed upon investigation completion.
Detailed record list
Report Received Date
2025-10-20 00:00:00
Iyear
2025
Report Number
20250117
Supplemental Number
41488
Report Type
Original
Operator Id
2564
Name
Colorado Interstate Gas Co
Operator Street Address
1001 Louisiana St, Suite 1000
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Local Datetime
2025-09-21 02:15:00
Time Zone
Mountain
Daylight Savings Ind
Yes
Location Latitude
41.05172821
Location Longitude
-105.1041421
Nrc Rpt Num
1443296
Nrc Rpt Datetime
2025-09-21 02:27:00
Additional Nrc Report Numbers
1443459
Commodity Released Type
Natural Gas
Unintentional Release
97605
Intentional Release
23619
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
Shutdown Datetime
2025-09-21 02:20:00
Still Shutdown Ind
Yes
Communication State Fed Ind
Yes
Party Initiated Communication
Operator
Initial Responder Com Datetime
2025-09-21 01:42:00
Ignite Ind
Yes
Ignite Datetime
2025-09-21 01:42:00
How Extinguished
Allowed To Burn Out
Gas Consumed By Fire In Mcf
48803
Explode Ind
No
Upstream Action Taken
Valve Closure
Upstream Valve Close Datetime
2025-09-21 02:20:00
Downstream Action Taken
Valve Closure
Downstream Vlv Close Datetime
2025-09-21 03:04:00
Num Pub Evacuated
0
Incident Identified Datetime
2025-09-20 23:40:00
On Site Datetime
2025-09-21 08:07:00
Confirmed Discovery Datetime
2025-09-21 01:42:00
On Off Shore
Onshore
Onshore State Abbreviation
Wy
Onshore Postal Code
82001
Onshore City Name
Cheyenne
Onshore County Name
Laramie
Designated Location
Milepost
Designated Name
103
Pipe Fac Name
Cig 5a Pipeline
Segment Name
Mlv 8.7 To Mlv 11
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Other Underground Facilities
No
Crossing
Yes
Railroad Crossing Ind
Yes
Railroad Type
Bored/drilled
Pipe Facility Type
Interstate
System Part Involved
Onshore Pipeline, Including Valve Sites
Item Involved
Pipe
Pipe Type
Pipe Seam
Pipe Diameter
22
Pipe Wall Thickness
0.375
Pipe Smys
46000
Pipe Specification
Api-5lx
Pipe Seam Type
Other
Pipe Seam Details
Efw
Pipe Manufacturer
Ao Smith
Pipe Coating Type
Coal Tar
Coating Applied Ind
Unknown
Installation Year
1956
Manufactured Year
1955
Material Involved
Carbon Steel
Release Type
Rupture
Rupture Orient
Other
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
483
Heat Damage Ind
No
Non Heat Damage Ind
No
Did Occur In Mca Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
292815
Est Cost Intentional Release
70857
Est Cost Prop Damage
0
Est Cost Emergency
127000
Est Cost Other
0
Est Cost Other Details
Repair Cost Tbd
Gas Cost In Mcf
3
Prpty
490672
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Wildlife Impact Ind
No
Accident Psig
807
Gas Flow In Pipe In Mcf
70000
Mop Psig
850
Mop Cfr Section
192.619(A)(2)
Maop Established Date
1970-07-01 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
58129
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
Yes
Scada Conf Ind
No
Accident Identifier
Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Or Pack Calculations)
Investigation Status
Yes, but the investigation of the control room and/or controller actions has not yet been completed by the operator (supplemental report required)
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Other Incident Cause
Cause Details
Unknown
Other Type
Unknown
Unknown Subtype
Still Under Investigation, Cause Of Incident To Be Determined* (*supplemental Report Required)
Preparer Name
B****** C*******
Preparer Title
Pipeline Engineer
Preparer Email
B***************@k***********.com
Local Contact Name
B**** L********
Local Contact Email
B**************@k***********.com
Authorizer Name
Z*** R*****
Authorizer Title
Director - Codes And Standard
Authorizer Telephone
713-420-2609
Authorizer Email
Z**********@k***********.com
Narrative
Cig 5a pipeline released 97,506 mcf. Ntsb is currently investigating. Pipeline is currently out of service. Supplemental report will be filed upon investigation completion.
| Report Received Date | 2025-10-20 00:00:00 |
|---|---|
| Iyear | 2025 |
| Report Number | 20250117 |
| Supplemental Number | 41488 |
| Report Type | Original |
| Operator Id | 2564 PHMSA Enforcement |
| Name | Colorado Interstate Gas Co |
| Operator Street Address | 1001 Louisiana St, Suite 1000 |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77002 |
| Local Datetime | 2025-09-21 02:15:00 |
| Time Zone | Mountain |
| Daylight Savings Ind | Yes |
| Location Latitude | 41.05172821 Google Maps OpenStreetMap |
| Location Longitude | -105.1041421 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1443296 NRC Report How to search |
| Nrc Rpt Datetime | 2025-09-21 02:27:00 |
| Additional Nrc Report Numbers | 1443459 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 97605 |
| Intentional Release | 23619 |
| 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 |
| Shutdown Datetime | 2025-09-21 02:20:00 |
| Still Shutdown Ind | Yes |
| Communication State Fed Ind | Yes |
| Party Initiated Communication | Operator |
| Initial Responder Com Datetime | 2025-09-21 01:42:00 |
| Ignite Ind | Yes |
| Ignite Datetime | 2025-09-21 01:42:00 |
| How Extinguished | Allowed To Burn Out |
| Gas Consumed By Fire In Mcf | 48803 |
| Explode Ind | No |
| Upstream Action Taken | Valve Closure |
| Upstream Valve Close Datetime | 2025-09-21 02:20:00 |
| Downstream Action Taken | Valve Closure |
| Downstream Vlv Close Datetime | 2025-09-21 03:04:00 |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2025-09-20 23:40:00 |
| On Site Datetime | 2025-09-21 08:07:00 |
| Confirmed Discovery Datetime | 2025-09-21 01:42:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Wy |
| Onshore Postal Code | 82001 |
| Onshore City Name | Cheyenne |
| Onshore County Name | Laramie |
| Designated Location | Milepost |
| Designated Name | 103 |
| Pipe Fac Name | Cig 5a Pipeline |
| Segment Name | Mlv 8.7 To Mlv 11 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Other Underground Facilities | No |
| Crossing | Yes |
| Railroad Crossing Ind | Yes |
| Railroad Type | Bored/drilled |
| Pipe Facility Type | Interstate |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| Item Involved | Pipe |
| Pipe Type | Pipe Seam |
| Pipe Diameter | 22 |
| Pipe Wall Thickness | 0.375 |
| Pipe Smys | 46000 |
| Pipe Specification | Api-5lx |
| Pipe Seam Type | Other |
| Pipe Seam Details | Efw |
| Pipe Manufacturer | Ao Smith |
| Pipe Coating Type | Coal Tar |
| Coating Applied Ind | Unknown |
| Installation Year | 1956 |
| Manufactured Year | 1955 |
| Material Involved | Carbon Steel |
| Release Type | Rupture |
| Rupture Orient | Other |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 483 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Did Occur In Mca Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 292815 |
| Est Cost Intentional Release | 70857 |
| Est Cost Prop Damage | 0 |
| Est Cost Emergency | 127000 |
| Est Cost Other | 0 |
| Est Cost Other Details | Repair Cost Tbd |
| Gas Cost In Mcf | 3 |
| Prpty | 490672 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Wildlife Impact Ind | No |
| Accident Psig | 807 |
| Gas Flow In Pipe In Mcf | 70000 |
| Mop Psig | 850 |
| Mop Cfr Section | 192.619(A)(2) View CFR 49 §192 |
| Maop Established Date | 1970-07-01 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 | 58129 |
| 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 | Yes |
| Scada Conf Ind | No |
| Accident Identifier | Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Or Pack Calculations) |
| Investigation Status | Yes, but the investigation of the control room and/or controller actions has not yet been completed by the operator (supplemental report required) |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Other Incident Cause |
| Cause Details | Unknown |
| Other Type | Unknown |
| Unknown Subtype | Still Under Investigation, Cause Of Incident To Be Determined* (*supplemental Report Required) |
| Preparer Name | B****** C******* |
| Preparer Title | Pipeline Engineer |
| Preparer Email | B***************@k***********.com |
| Local Contact Name | B**** L******** |
| Local Contact Email | B**************@k***********.com |
| Authorizer Name | Z*** R***** |
| Authorizer Title | Director - Codes And Standard |
| Authorizer Telephone | 713-420-2609 |
| Authorizer Email | Z**********@k***********.com |
| Narrative | Cig 5a pipeline released 97,506 mcf. Ntsb is currently investigating. Pipeline is currently out of service. Supplemental report will be filed upon investigation completion. |
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