Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2017-08-27 — TX
Operator
Tennessee Gas Pipeline Company
Cause
Incorrect Operation
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$0
Incident datetime
2017-08-27 09:22
Report number
Location
TX
Narrative
On 8/24/2017, at 2:00pm tennessee gas pipeline company(tgp) compressor station 9 was shut down and placed in by-pass mode as a precautionary measure due to hurricane harvey. The mainline at this station was still free flowing natural gas. On 8/27/17 at approximately 9:22am, due to a power loss event associated with hurricane harvey, tgp's compressor station 9 victoria experienced an emergency shut down(esd) which caused an esd valve to open and release natural gas to atmosphere. The local sheriff's office contacted tgp gas control at 9:22 am and informed them of the gas release event. At 9:25am two electronics and communication technicians were called out and they arrived on site at 9:39 am. The technicians determined there was no issue with the station pressure and it was found to be below maop therefore in consultation with the area manager it was decided to close the blow off valve #9-b2d. The technicians walked the esd system checking the valves for proper position according to the procedure. It was determined that a by-pass valve around the esd valve #9-bd5 was open which allowed the reported 17,811 mcf release of natural gas to the atmosphere.
Detailed record list
Report Received Date
2017-09-21 00:00:00
Iyear
2017
Report Number
20170080
Supplemental Number
17614
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
2017-08-27 09:22:00
Location Latitude
28.7000143
Location Longitude
-96.9436466
Nrc Rpt Num
1188501
Nrc Rpt Datetime
2017-08-27 10:17:00
Commodity Released Type
Natural Gas
Unintentional Release
17810.566
Intentional Release
18498.816
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Shutdown Due Accident Ind
No
Shutdown Explain
The System Was Shut Down In Preparation For The Harvey Hurricane
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Incident Identified Datetime
2017-08-27 09:22:00
On Site Datetime
2017-08-27 10:00:00
On Off Shore
Onshore
Onshore State Abbreviation
Tx
Onshore Postal Code
77905
Onshore City Name
Victoria
Onshore County Name
Victoria
Designated Location
Milepost
Designated Name
Compressor
Pipe Fac Name
Tennessee Gas Pipeline
Segment Name
Compressor Station 9
Federal
Yes
Location Type
Operator-Controlled Property
Incident Area Type
Aboveground
Incident Area Subtype
Other
Incident Area Details
Compressor Station
Crossing
No
Pipe Facility Type
Interstate
System Part Involved
Onshore Compressor Station Equipment And Piping
Item Involved
Valve
Valve Type
Auxiliary Or Other Valve
Installation Year
2015
Material Involved
Carbon Steel
Release Type
Other
Release Type Details
The System Esd But A By-Pass Valve Was Left Open Which Released Gas.
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
1035
Heat Damage Ind
No
Non Heat Damage Ind
No
Hca Fatalities Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
53229
Est Cost Intentional Release
55285
Est Cost Prop Damage
0
Est Cost Emergency
400
Est Cost Other
0
Prpty
108914
Accident Psig
741
Mop Psig
750
Mop Cfr Section
192.619(C)
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
No
Scada Conf Ind
No
Accident Identifier
Other
Accident Details
Sheriff Department Reported It
Investigation Status
No, the facility was not monitored by a controller(s) at the time of the incident
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Incorrect Operation
Cause Details
Valve Left Or Placed In Wrong Position, But Not Resulting In An Overpressure
Operation Type
Valve Left Or Placed In Wrong Position, But Not Resulting In An Overpressure
Related Failure Follow Ind
Yes
Category Type
Routine Maintenance
Operator Qualification Ind
No
Preparer Name
K**** B******
Preparer Title
Pipeline Engineer - Compliance-Codes And Standards
Preparer Email
K************@k***********.com
Preparer Telephone
7134206633
Authorizer Name
J**** H********
Authorizer Title
Director Of Compliance-Codes And Standards
Authorizer Telephone
7133699443
Authorizer Email
J*************@k***********.com
Narrative
On 8/24/2017, at 2:00pm tennessee gas pipeline company(tgp) compressor station 9 was shut down and placed in by-pass mode as a precautionary measure due to hurricane harvey. The mainline at this station was still free flowing natural gas. On 8/27/17 at approximately 9:22am, due to a power loss event associated with hurricane harvey, tgp's compressor station 9 victoria experienced an emergency shut down(esd) which caused an esd valve to open and release natural gas to atmosphere. The local sheriff's office contacted tgp gas control at 9:22 am and informed them of the gas release event. At 9:25am two electronics and communication technicians were called out and they arrived on site at 9:39 am. The technicians determined there was no issue with the station pressure and it was found to be below maop therefore in consultation with the area manager it was decided to close the blow off valve #9-b2d. The technicians walked the esd system checking the valves for proper position according to the procedure. It was determined that a by-pass valve around the esd valve #9-bd5 was open which allowed the reported 17,811 mcf release of natural gas to the atmosphere.
| Report Received Date | 2017-09-21 00:00:00 |
|---|---|
| Iyear | 2017 |
| Report Number | 20170080 |
| Supplemental Number | 17614 |
| 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 | 2017-08-27 09:22:00 |
| Location Latitude | 28.7000143 Google Maps OpenStreetMap |
| Location Longitude | -96.9436466 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1188501 NRC Report How to search |
| Nrc Rpt Datetime | 2017-08-27 10:17:00 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 17810.566 |
| Intentional Release | 18498.816 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | The System Was Shut Down In Preparation For The Harvey Hurricane |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2017-08-27 09:22:00 |
| On Site Datetime | 2017-08-27 10:00:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 77905 |
| Onshore City Name | Victoria |
| Onshore County Name | Victoria |
| Designated Location | Milepost |
| Designated Name | Compressor |
| Pipe Fac Name | Tennessee Gas Pipeline |
| Segment Name | Compressor Station 9 |
| Federal | Yes |
| Location Type | Operator-Controlled Property |
| Incident Area Type | Aboveground |
| Incident Area Subtype | Other |
| Incident Area Details | Compressor Station |
| Crossing | No |
| Pipe Facility Type | Interstate |
| System Part Involved | Onshore Compressor Station Equipment And Piping |
| Item Involved | Valve |
| Valve Type | Auxiliary Or Other Valve |
| Installation Year | 2015 |
| Material Involved | Carbon Steel |
| Release Type | Other |
| Release Type Details | The System Esd But A By-Pass Valve Was Left Open Which Released Gas. |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 1035 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Hca Fatalities Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 53229 |
| Est Cost Intentional Release | 55285 |
| Est Cost Prop Damage | 0 |
| Est Cost Emergency | 400 |
| Est Cost Other | 0 |
| Prpty | 108914 |
| Accident Psig | 741 |
| Mop Psig | 750 |
| Mop Cfr Section | 192.619(C) 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 | No |
| Scada Conf Ind | No |
| Accident Identifier | Other |
| Accident Details | Sheriff Department Reported It |
| Investigation Status | No, the facility was not monitored by a controller(s) at the time of the incident |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Incorrect Operation |
| Cause Details | Valve Left Or Placed In Wrong Position, But Not Resulting In An Overpressure |
| Operation Type | Valve Left Or Placed In Wrong Position, But Not Resulting In An Overpressure |
| Related Failure Follow Ind | Yes |
| Category Type | Routine Maintenance |
| Operator Qualification Ind | No |
| Preparer Name | K**** B****** |
| Preparer Title | Pipeline Engineer - Compliance-Codes And Standards |
| Preparer Email | K************@k***********.com |
| Preparer Telephone | 7134206633 |
| Authorizer Name | J**** H******** |
| Authorizer Title | Director Of Compliance-Codes And Standards |
| Authorizer Telephone | 7133699443 |
| Authorizer Email | J*************@k***********.com |
| Narrative | On 8/24/2017, at 2:00pm tennessee gas pipeline company(tgp) compressor station 9 was shut down and placed in by-pass mode as a precautionary measure due to hurricane harvey. The mainline at this station was still free flowing natural gas. On 8/27/17 at approximately 9:22am, due to a power loss event associated with hurricane harvey, tgp's compressor station 9 victoria experienced an emergency shut down(esd) which caused an esd valve to open and release natural gas to atmosphere. The local sheriff's office contacted tgp gas control at 9:22 am and informed them of the gas release event. At 9:25am two electronics and communication technicians were called out and they arrived on site at 9:39 am. The technicians determined there was no issue with the station pressure and it was found to be below maop therefore in consultation with the area manager it was decided to close the blow off valve #9-b2d. The technicians walked the esd system checking the valves for proper position according to the procedure. It was determined that a by-pass valve around the esd valve #9-bd5 was open which allowed the reported 17,811 mcf release of natural gas to the atmosphere. |
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