Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2015-07-18 — TX
Operator
Colorado Interstate Gas Co
Cause
Equipment Failure
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$2,500
Incident datetime
2015-07-18 17:24
Report number
Location
TX
Narrative
A solenoid valve on the tower switch valve failed, rendering the air dryer inoperable. This allowed water to enter the esd system causing the esd vent valve to activate (the water interfered with the esd's pneumatic operation). Gas was released through a 6" vent stack into the atmosphere. A volume greater than the reporting threshold of 3,000 mcf was released resulting in the incident report to the nrc. The instrument air dryer has been repaired and the facility was successfully placed back into service.
Detailed record list
Report Received Date
2015-08-12 00:00:00
Iyear
2015
Report Number
20150102
Supplemental Number
16834
Report Type
Original Final
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
2015-07-18 17:22:00
Location Latitude
39.6085
Location Longitude
-104.35013
Nrc Rpt Num
1123182
Nrc Rpt Datetime
2015-07-18 19:07:00
Commodity Released Type
Natural Gas
Unintentional Release
3600
Intentional Release
500
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2015-07-18 17:46:00
Restart Datetime
2015-07-22 14:00:00
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Incident Identified Datetime
2015-07-18 17:24:00
On Site Datetime
2015-07-18 17:46:00
On Off Shore
Onshore
Onshore State Abbreviation
Co
Onshore Postal Code
80103
Onshore City Name
Byers
Onshore County Name
Arapahoe
Designated Location
Milepost
Designated Name
1.0
Pipe Fac Name
Latigo Storage
Segment Name
Yard Piping
Federal
No
Location Type
Operator-Controlled Property
Incident Area Type
Aboveground
Incident Area Subtype
Typical Aboveground Facility Piping Or Appurtenance
Crossing
No
Pipe Facility Type
Interstate
System Part Involved
Belowground Storage, Including Associated Equipment And Piping
Item Involved
Other
Item Involved Details
Esd Vent Valve
Installation Year
1978
Material Involved
Carbon Steel
Release Type
Other
Release Type Details
Release Through 6" Vent Valve Outlet Pipe.
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
207
Heat Damage Ind
No
Non Heat Damage Ind
No
Hca Fatalities Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
9900
Est Cost Intentional Release
1375
Est Cost Prop Damage
2500
Est Cost Emergency
1500
Est Cost Other
0
Prpty
15275
Accident Psig
1520
Mop Psig
2130
Mop Cfr Section
192.619(A)(1)
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
No
Pipeline Function
Transmission In Storage Field
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
The control room was not involved in any way.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Other Equipment Failure
Eq Failure Type
Other Equipment Failure
Eq Failure Details
Instrument Air Dryer Failed Allowing Water To Get Into The Esd System
Eq Additional Other Ind
Yes
Eq Additional Other Details
Solenoid Valve On Tower Switch Valve Failed.
Preparer Name
K****** C P*****
Preparer Title
Sr. Engineer
Preparer Email
K*********@k***********.com
Preparer Telephone
2053257554
Preparer Fax
2053253508
Authorizer Name
R*** G*****
Authorizer Title
Director Codes Standards
Authorizer Telephone
7134205433
Authorizer Email
R**********@k***********.com
Narrative
A solenoid valve on the tower switch valve failed, rendering the air dryer inoperable. This allowed water to enter the esd system causing the esd vent valve to activate (the water interfered with the esd's pneumatic operation). Gas was released through a 6" vent stack into the atmosphere. A volume greater than the reporting threshold of 3,000 mcf was released resulting in the incident report to the nrc. The instrument air dryer has been repaired and the facility was successfully placed back into service.
| Report Received Date | 2015-08-12 00:00:00 |
|---|---|
| Iyear | 2015 |
| Report Number | 20150102 |
| Supplemental Number | 16834 |
| Report Type | Original Final |
| 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 | 2015-07-18 17:22:00 |
| Location Latitude | 39.6085 Google Maps OpenStreetMap |
| Location Longitude | -104.35013 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1123182 NRC Report How to search |
| Nrc Rpt Datetime | 2015-07-18 19:07:00 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 3600 |
| Intentional Release | 500 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2015-07-18 17:46:00 |
| Restart Datetime | 2015-07-22 14:00:00 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2015-07-18 17:24:00 |
| On Site Datetime | 2015-07-18 17:46:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Co |
| Onshore Postal Code | 80103 |
| Onshore City Name | Byers |
| Onshore County Name | Arapahoe |
| Designated Location | Milepost |
| Designated Name | 1.0 |
| Pipe Fac Name | Latigo Storage |
| Segment Name | Yard Piping |
| Federal | No |
| Location Type | Operator-Controlled Property |
| Incident Area Type | Aboveground |
| Incident Area Subtype | Typical Aboveground Facility Piping Or Appurtenance |
| Crossing | No |
| Pipe Facility Type | Interstate |
| System Part Involved | Belowground Storage, Including Associated Equipment And Piping |
| Item Involved | Other |
| Item Involved Details | Esd Vent Valve |
| Installation Year | 1978 |
| Material Involved | Carbon Steel |
| Release Type | Other |
| Release Type Details | Release Through 6" Vent Valve Outlet Pipe. |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 207 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Hca Fatalities Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 9900 |
| Est Cost Intentional Release | 1375 |
| Est Cost Prop Damage | 2500 |
| Est Cost Emergency | 1500 |
| Est Cost Other | 0 |
| Prpty | 15275 |
| Accident Psig | 1520 |
| Mop Psig | 2130 |
| Mop Cfr Section | 192.619(A)(1) View CFR 49 §192 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Pressure Restriction Ind | No |
| Pipeline Function | Transmission In Storage Field |
| 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 | The control room was not involved in any way. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Other Equipment Failure |
| Eq Failure Type | Other Equipment Failure |
| Eq Failure Details | Instrument Air Dryer Failed Allowing Water To Get Into The Esd System |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | Solenoid Valve On Tower Switch Valve Failed. |
| Preparer Name | K****** C P***** |
| Preparer Title | Sr. Engineer |
| Preparer Email | K*********@k***********.com |
| Preparer Telephone | 2053257554 |
| Preparer Fax | 2053253508 |
| Authorizer Name | R*** G***** |
| Authorizer Title | Director Codes Standards |
| Authorizer Telephone | 7134205433 |
| Authorizer Email | R**********@k***********.com |
| Narrative | A solenoid valve on the tower switch valve failed, rendering the air dryer inoperable. This allowed water to enter the esd system causing the esd vent valve to activate (the water interfered with the esd's pneumatic operation). Gas was released through a 6" vent stack into the atmosphere. A volume greater than the reporting threshold of 3,000 mcf was released resulting in the incident report to the nrc. The instrument air dryer has been repaired and the facility was successfully placed back into service. |
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