Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2014-11-19 — PA
Operator
Eqt Midstream
Cause
Equipment Failure
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$0
Incident datetime
2014-11-19 01:30
Report number
Location
PA
Narrative
At approximately 1:30 am november 19, 2014 the eqt call center received a call from a member of the public about noise at comet compressor station. The call center contacted operations personnel to respond and operations personnel arrived at approximately 2:10 am to find the esd had activated, an esd valve had not closed and gas was venting at the station site. Gas control also contacted operations and were notified personnel were in route. The applicable valves were shut which stopped the venting. Once calculations were completed it was determined the gas loss was greater than the 3 mmcf for reporting. The initial esd was determined to be caused by a bad gas detector sensor which was replaced. It appears the valve did not close due to moisture in the supply gas line causing freeze off.
Detailed record list
Report Received Date
2014-12-18 00:00:00
Iyear
2014
Report Number
20140144
Supplemental Number
16587
Report Type
Original Final
Operator Id
31604
Name
Eqt Midstream
Operator Street Address
2200 Energy Drive
Operator City Name
Canonsburg
Operator State Abbreviation
PA
Operator Postal Code
15317
Local Datetime
2014-11-19 01:30:00
Location Latitude
39.31709
Location Longitude
-80.15808
Nrc Rpt Num
1101425
Nrc Rpt Datetime
2014-11-19 08:03:00
Commodity Released Type
Natural Gas
Unintentional Release
5000
Intentional Release
0
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2014-11-19 01:40:00
Restart Datetime
2014-11-19 02:50:00
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Incident Identified Datetime
2014-11-19 01:30:00
On Site Datetime
2014-11-19 02:10:00
On Off Shore
Onshore
Onshore State Abbreviation
Wv
Onshore Postal Code
26330
Onshore City Name
Bridgeport
Onshore County Name
Taylor
Designated Location
Survey Station No.
Designated Name
0+00 Gsf608
Pipe Fac Name
Comet Compressor Station
Segment Name
Comet Compressor Station
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
Onshore Compressor Station Equipment And Piping
Item Involved
Other
Item Involved Details
Esd System
Installation Year
1970
Material Involved
Carbon Steel
Release Type
Other
Release Type Details
Extended Venting Of Esd System
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
218
Heat Damage Ind
No
Non Heat Damage Ind
No
Hca Fatalities Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
22050
Est Cost Intentional Release
0
Est Cost Prop Damage
0
Est Cost Emergency
200
Est Cost Other
0
Est Cost Other Details
200
Prpty
22250
Accident Psig
896
Mop Psig
1000
Mop Cfr Section
Not On Omb-Approved Form When Submitted
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
Notification From Public
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 gas release was from an esd caused by an invalid gas detector reading not monitored by gas control.
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
Esd System Failure Ind
Yes
Eq Additional Other Ind
Yes
Eq Additional Other Details
Esd Valve Did Not Close Due To Moisture In Supply Gas Which Caused Freeze Off
Preparer Name
J** L*******
Preparer Title
Manager Compliance
Preparer Email
J********@e**.com
Preparer Telephone
412-395-3135
Authorizer Name
J** L*******
Authorizer Title
Manager Compliance
Authorizer Telephone
412-395-3135
Authorizer Email
J********@e**.com
Narrative
At approximately 1:30 am november 19, 2014 the eqt call center received a call from a member of the public about noise at comet compressor station. The call center contacted operations personnel to respond and operations personnel arrived at approximately 2:10 am to find the esd had activated, an esd valve had not closed and gas was venting at the station site. Gas control also contacted operations and were notified personnel were in route. The applicable valves were shut which stopped the venting. Once calculations were completed it was determined the gas loss was greater than the 3 mmcf for reporting. The initial esd was determined to be caused by a bad gas detector sensor which was replaced. It appears the valve did not close due to moisture in the supply gas line causing freeze off.
| Report Received Date | 2014-12-18 00:00:00 |
|---|---|
| Iyear | 2014 |
| Report Number | 20140144 |
| Supplemental Number | 16587 |
| Report Type | Original Final |
| Operator Id | 31604 PHMSA Enforcement |
| Name | Eqt Midstream |
| Operator Street Address | 2200 Energy Drive |
| Operator City Name | Canonsburg |
| Operator State Abbreviation | PA |
| Operator Postal Code | 15317 |
| Local Datetime | 2014-11-19 01:30:00 |
| Location Latitude | 39.31709 Google Maps OpenStreetMap |
| Location Longitude | -80.15808 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1101425 NRC Report How to search |
| Nrc Rpt Datetime | 2014-11-19 08:03:00 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 5000 |
| Intentional Release | 0 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2014-11-19 01:40:00 |
| Restart Datetime | 2014-11-19 02:50:00 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2014-11-19 01:30:00 |
| On Site Datetime | 2014-11-19 02:10:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Wv |
| Onshore Postal Code | 26330 |
| Onshore City Name | Bridgeport |
| Onshore County Name | Taylor |
| Designated Location | Survey Station No. |
| Designated Name | 0+00 Gsf608 |
| Pipe Fac Name | Comet Compressor Station |
| Segment Name | Comet Compressor Station |
| 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 | Onshore Compressor Station Equipment And Piping |
| Item Involved | Other |
| Item Involved Details | Esd System |
| Installation Year | 1970 |
| Material Involved | Carbon Steel |
| Release Type | Other |
| Release Type Details | Extended Venting Of Esd System |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 218 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Hca Fatalities Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 22050 |
| Est Cost Intentional Release | 0 |
| Est Cost Prop Damage | 0 |
| Est Cost Emergency | 200 |
| Est Cost Other | 0 |
| Est Cost Other Details | 200 |
| Prpty | 22250 |
| Accident Psig | 896 |
| Mop Psig | 1000 |
| Mop Cfr Section | Not On Omb-Approved Form When Submitted 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 | Notification From Public |
| 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 gas release was from an esd caused by an invalid gas detector reading not monitored by gas control. |
| 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 |
| Esd System Failure Ind | Yes |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | Esd Valve Did Not Close Due To Moisture In Supply Gas Which Caused Freeze Off |
| Preparer Name | J** L******* |
| Preparer Title | Manager Compliance |
| Preparer Email | J********@e**.com |
| Preparer Telephone | 412-395-3135 |
| Authorizer Name | J** L******* |
| Authorizer Title | Manager Compliance |
| Authorizer Telephone | 412-395-3135 |
| Authorizer Email | J********@e**.com |
| Narrative | At approximately 1:30 am november 19, 2014 the eqt call center received a call from a member of the public about noise at comet compressor station. The call center contacted operations personnel to respond and operations personnel arrived at approximately 2:10 am to find the esd had activated, an esd valve had not closed and gas was venting at the station site. Gas control also contacted operations and were notified personnel were in route. The applicable valves were shut which stopped the venting. Once calculations were completed it was determined the gas loss was greater than the 3 mmcf for reporting. The initial esd was determined to be caused by a bad gas detector sensor which was replaced. It appears the valve did not close due to moisture in the supply gas line causing freeze off. |
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