Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2016-05-21 — TX
Operator
Tennessee Gas Pipeline Company
Cause
Equipment Failure
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$0
Incident datetime
2016-05-21 15:52
Report number
Location
TX
Narrative
On may 21, 2016, an unintentional release of natural gas occurred at the tgp collinwood compressor station 555 in wayne county, tennessee when the station experienced an emergency shut-down (esd) due to a failed gas detector and subsequent failure of an esd isolation valve to properly close. This resulted in a release of 32,147 mcf of natural gas. Station employees responded and shut in the affected valve. A failed gas detector was identified as the cause of the esd. The reportable release of natural gas resulted when the esd isolation valve failed to close. Failure of the esd isolation valve to properly close resulted from the improper installation of the unit power gas lines. Prior to returning the station back to service, the power gas lines were properly re-installed and the gas detector components were replaced (controller and sensors). The valve and gas detector were tested and the station was returned to service at 1:03 am cst the following day.
Detailed record list
Report Received Date
2016-06-16 00:00:00
Iyear
2016
Report Number
20160050
Supplemental Number
17150
Report Type
Supplemental Final
Operator Id
19160
Name
Tennessee Gas Pipeline Company
Operator Street Address
1001 Louisiana St
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Local Datetime
2016-05-21 15:52:00
Location Latitude
35.024183
Location Longitude
-87.757653
Nrc Rpt Num
1148432
Nrc Rpt Datetime
2016-05-21 19:15:00
Commodity Released Type
Natural Gas
Unintentional Release
32147
Intentional Release
0
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2016-05-21 15:56:00
Restart Datetime
2016-05-22 01:03:00
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Incident Identified Datetime
2016-05-21 15:52:00
On Site Datetime
2016-05-21 16:30:00
On Off Shore
Onshore
Onshore State Abbreviation
Tn
Onshore Postal Code
38452
Onshore City Name
Not Within A Municipality
Onshore County Name
Wayne
Designated Location
Milepost
Designated Name
Station 555
Pipe Fac Name
Collinwood Compressor Station
Segment Name
500-Line
Federal
No
Location Type
Operator-Controlled Property
Incident Area Type
Aboveground
Incident Area Subtype
Other
Incident Area Details
Compressor Station Esd Isolation Valve
Crossing
No
Pipe Facility Type
Interstate
System Part Involved
Onshore Compressor Station Equipment And Piping
Item Involved
Regulator/control Valve
Installation Year
2013
Material Involved
Carbon Steel
Release Type
Other
Release Type Details
Emergency Shutdown (Esd) Due To A Failed Gas Detector And A Esd Isolation Valve Operation Failure Resulting In The Unintentional Release Of Natural Gas Through The Esd Blow Down Vent.
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
633
Heat Damage Ind
No
Non Heat Damage Ind
No
Hca Fatalities Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
55085
Est Cost Intentional Release
0
Est Cost Prop Damage
0
Est Cost Emergency
1350
Est Cost Other
0
Prpty
56435
Accident Psig
458
Mop Psig
936
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
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
Yes
Scada Conf Ind
Yes
Accident Identifier
Other
Accident Details
Faulty Gas Detector Triggered Automatic Emergency Shut-Down Of The Station.
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
Event caused by faulty gas detector and automatic shutdown of the facility.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Malfunction Of Control/relief Equipment
Eq Failure Type
Malfunction Of Control/relief Equipment
Control Valve Ind
Yes
Other Control Relief Ind
Yes
Other Control Relief Details
Emergency Shutdown Down And Release Of Natural Gas Due To A Failed Gas Detector And A Esd Isolation Valve Operational Failure.
Additional Installation Ind
Yes
Eq Additional Other Ind
Yes
Eq Additional Other Details
The Esd Isolation Valve Power-Gas Line Was Improperly Connected.
Preparer Name
S****** D****
Preparer Title
Engineer
Preparer Email
S************@k***********.com
Preparer Telephone
7193514199
Preparer Fax
7193514199
Authorizer Name
R*** G*****
Authorizer Title
Director Of Engineering Codes And Standards
Authorizer Telephone
(713) 420-5433
Authorizer Email
R**********@k***********.com
Narrative
On may 21, 2016, an unintentional release of natural gas occurred at the tgp collinwood compressor station 555 in wayne county, tennessee when the station experienced an emergency shut-down (esd) due to a failed gas detector and subsequent failure of an esd isolation valve to properly close. This resulted in a release of 32,147 mcf of natural gas. Station employees responded and shut in the affected valve. A failed gas detector was identified as the cause of the esd. The reportable release of natural gas resulted when the esd isolation valve failed to close. Failure of the esd isolation valve to properly close resulted from the improper installation of the unit power gas lines. Prior to returning the station back to service, the power gas lines were properly re-installed and the gas detector components were replaced (controller and sensors). The valve and gas detector were tested and the station was returned to service at 1:03 am cst the following day.
| Report Received Date | 2016-06-16 00:00:00 |
|---|---|
| Iyear | 2016 |
| Report Number | 20160050 |
| Supplemental Number | 17150 |
| Report Type | Supplemental Final |
| Operator Id | 19160 PHMSA Enforcement |
| Name | Tennessee Gas Pipeline Company |
| Operator Street Address | 1001 Louisiana St |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77002 |
| Local Datetime | 2016-05-21 15:52:00 |
| Location Latitude | 35.024183 Google Maps OpenStreetMap |
| Location Longitude | -87.757653 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1148432 NRC Report How to search |
| Nrc Rpt Datetime | 2016-05-21 19:15:00 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 32147 |
| Intentional Release | 0 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2016-05-21 15:56:00 |
| Restart Datetime | 2016-05-22 01:03:00 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2016-05-21 15:52:00 |
| On Site Datetime | 2016-05-21 16:30:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Tn |
| Onshore Postal Code | 38452 |
| Onshore City Name | Not Within A Municipality |
| Onshore County Name | Wayne |
| Designated Location | Milepost |
| Designated Name | Station 555 |
| Pipe Fac Name | Collinwood Compressor Station |
| Segment Name | 500-Line |
| Federal | No |
| Location Type | Operator-Controlled Property |
| Incident Area Type | Aboveground |
| Incident Area Subtype | Other |
| Incident Area Details | Compressor Station Esd Isolation Valve |
| Crossing | No |
| Pipe Facility Type | Interstate |
| System Part Involved | Onshore Compressor Station Equipment And Piping |
| Item Involved | Regulator/control Valve |
| Installation Year | 2013 |
| Material Involved | Carbon Steel |
| Release Type | Other |
| Release Type Details | Emergency Shutdown (Esd) Due To A Failed Gas Detector And A Esd Isolation Valve Operation Failure Resulting In The Unintentional Release Of Natural Gas Through The Esd Blow Down Vent. |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 633 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Hca Fatalities Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 55085 |
| Est Cost Intentional Release | 0 |
| Est Cost Prop Damage | 0 |
| Est Cost Emergency | 1350 |
| Est Cost Other | 0 |
| Prpty | 56435 |
| Accident Psig | 458 |
| Mop Psig | 936 |
| 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 | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | Yes |
| Scada Conf Ind | Yes |
| Accident Identifier | Other |
| Accident Details | Faulty Gas Detector Triggered Automatic Emergency Shut-Down Of The Station. |
| 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 | Event caused by faulty gas detector and automatic shutdown of the facility. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Malfunction Of Control/relief Equipment |
| Eq Failure Type | Malfunction Of Control/relief Equipment |
| Control Valve Ind | Yes |
| Other Control Relief Ind | Yes |
| Other Control Relief Details | Emergency Shutdown Down And Release Of Natural Gas Due To A Failed Gas Detector And A Esd Isolation Valve Operational Failure. |
| Additional Installation Ind | Yes |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | The Esd Isolation Valve Power-Gas Line Was Improperly Connected. |
| Preparer Name | S****** D**** |
| Preparer Title | Engineer |
| Preparer Email | S************@k***********.com |
| Preparer Telephone | 7193514199 |
| Preparer Fax | 7193514199 |
| Authorizer Name | R*** G***** |
| Authorizer Title | Director Of Engineering Codes And Standards |
| Authorizer Telephone | (713) 420-5433 |
| Authorizer Email | R**********@k***********.com |
| Narrative | On may 21, 2016, an unintentional release of natural gas occurred at the tgp collinwood compressor station 555 in wayne county, tennessee when the station experienced an emergency shut-down (esd) due to a failed gas detector and subsequent failure of an esd isolation valve to properly close. This resulted in a release of 32,147 mcf of natural gas. Station employees responded and shut in the affected valve. A failed gas detector was identified as the cause of the esd. The reportable release of natural gas resulted when the esd isolation valve failed to close. Failure of the esd isolation valve to properly close resulted from the improper installation of the unit power gas lines. Prior to returning the station back to service, the power gas lines were properly re-installed and the gas detector components were replaced (controller and sensors). The valve and gas detector were tested and the station was returned to service at 1:03 am cst the following day. |
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