GTG incident on 2013-11-30 — TX

Operator
Northern Border Pipeline Company
Cause
Equipment Failure
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities 0 injuries
Property damage (nominal)
$1,508
Incident datetime
2013-11-30 16:15
Report number
Location
TX
Narrative
At 13:51 on 11/30/2013 the station control panel programmable logic controller (plc) failed due to a digital input card failure. The plc failure caused the station to shut down and blow down. The station isolation valves and blowdown valve operated correctly and vented the station main gas piping. At the same time, the fuel gas vent valves opened, but the fuel gas isolation valves, hv-1014 and hv-1036 failed to close. The on-call technician arrived at the station at 16:15 and discovered gas venting through the fuel gas vent valves. At 16:25 the fuel gas vent valves were manually closed. The station was restored to service at 01:15 12/01/2013.
Detailed record list
Report Received Date
2013-12-30 00:00:00
Iyear
2013
Report Number
20130121
Supplemental Number
16303
Report Type
Supplemental Final
Operator Id
Name
Northern Border Pipeline Company
Operator Street Address
700 Louisiana Street Suite 700
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Local Datetime
2013-11-30 14:30:00
Location Latitude
Location Longitude
Nrc Rpt Num
Nrc Rpt Datetime
2013-11-30 18:13:00
Commodity Released Type
Natural Gas
Unintentional Release
11450
Intentional Release
0
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2013-11-30 14:30:00
Restart Datetime
2013-12-01 01:15:00
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Incident Identified Datetime
2013-11-30 16:15:00
On Site Datetime
2013-11-30 16:15:00
On Off Shore
Onshore
Onshore State Abbreviation
Nd
Onshore Postal Code
58835
Onshore City Name
Arnegard
Onshore County Name
Mckenzie
Designated Location
Milepost
Designated Name
36.2
Pipe Fac Name
Cs04 Arnegard Compressor Station
Segment Name
Northern Border Mainline Valve 15
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
Valve
Valve Type
Auxiliary Or Other Valve
Installation Year
1982
Material Involved
Carbon Steel
Release Type
Other
Release Type Details
Incomplete Closing Of Compressor Station Fuel Gas Supply Isolation Valves
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
1098
Heat Damage Ind
No
Non Heat Damage Ind
No
Hca Fatalities Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
45494
Est Cost Intentional Release
0
Est Cost Prop Damage
1508
Est Cost Emergency
300
Est Cost Other
0
Prpty
47302
Accident Psig
1235
Mop Psig
1445
Mop Cfr Section
Not On Omb-Approved Form When Submitted
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
No
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, specify investigation result(s): (select all that apply)
Invest No Control Room Ind
Yes
Invest No Controller Ind
Yes
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
Instrumentation Ind
Yes
Eq Additional Other Ind
Yes
Eq Additional Other Details
Debris In Control Valve
Preparer Name
K*** S****
Preparer Title
Compliance Specialist
Preparer Email
K*********@t**********.com
Preparer Telephone
(509) 533-2848
Preparer Fax
(509) 533-2993
Authorizer Name
K*** S****
Authorizer Title
Compliance Specialist
Authorizer Telephone
(509) 533-2848
Authorizer Email
K*********@t**********.com
Narrative
At 13:51 on 11/30/2013 the station control panel programmable logic controller (plc) failed due to a digital input card failure. The plc failure caused the station to shut down and blow down. The station isolation valves and blowdown valve operated correctly and vented the station main gas piping. At the same time, the fuel gas vent valves opened, but the fuel gas isolation valves, hv-1014 and hv-1036 failed to close. The on-call technician arrived at the station at 16:15 and discovered gas venting through the fuel gas vent valves. At 16:25 the fuel gas vent valves were manually closed. The station was restored to service at 01:15 12/01/2013.
Report Received Date 2013-12-30 00:00:00
Iyear 2013
Report Number 20130121
Supplemental Number 16303
Report Type Supplemental Final
Operator Id 13769 PHMSA Enforcement
Name Northern Border Pipeline Company
Operator Street Address 700 Louisiana Street Suite 700
Operator City Name Houston
Operator State Abbreviation TX
Operator Postal Code 77002
Local Datetime 2013-11-30 14:30:00
Location Latitude 47.769032 Google Maps OpenStreetMap
Location Longitude -103.499694 Google Maps OpenStreetMap
Nrc Rpt Num 1067182 NRC Report How to search
Nrc Rpt Datetime 2013-11-30 18:13:00
Commodity Released Type Natural Gas
Unintentional Release 11450
Intentional Release 0
Accompanying Liquid 0
Fatality Ind No
Fatal 0
Injury Ind No
Injure 0
Shutdown Due Accident Ind Yes
Shutdown Datetime 2013-11-30 14:30:00
Restart Datetime 2013-12-01 01:15:00
Ignite Ind No
Explode Ind No
Num Pub Evacuated 0
Incident Identified Datetime 2013-11-30 16:15:00
On Site Datetime 2013-11-30 16:15:00
On Off Shore Onshore
Onshore State Abbreviation Nd
Onshore Postal Code 58835
Onshore City Name Arnegard
Onshore County Name Mckenzie
Designated Location Milepost
Designated Name 36.2
Pipe Fac Name Cs04 Arnegard Compressor Station
Segment Name Northern Border Mainline Valve 15
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 Valve
Valve Type Auxiliary Or Other Valve
Installation Year 1982
Material Involved Carbon Steel
Release Type Other
Release Type Details Incomplete Closing Of Compressor Station Fuel Gas Supply Isolation Valves
Class Location Type Class 1 Location
Could Be Hca No
Pir Radius 1098
Heat Damage Ind No
Non Heat Damage Ind No
Hca Fatalities Ind No
Est Cost Oper Paid 0
Est Cost Unintentional Release 45494
Est Cost Intentional Release 0
Est Cost Prop Damage 1508
Est Cost Emergency 300
Est Cost Other 0
Prpty 47302
Accident Psig 1235
Mop Psig 1445
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 System
Scada In Place Ind Yes
Scada Operating Ind Yes
Scada Functional Ind No
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, specify investigation result(s): (select all that apply)
Invest No Control Room Ind Yes
Invest No Controller Ind Yes
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
Instrumentation Ind Yes
Eq Additional Other Ind Yes
Eq Additional Other Details Debris In Control Valve
Preparer Name K*** S****
Preparer Title Compliance Specialist
Preparer Email K*********@t**********.com
Preparer Telephone (509) 533-2848
Preparer Fax (509) 533-2993
Authorizer Name K*** S****
Authorizer Title Compliance Specialist
Authorizer Telephone (509) 533-2848
Authorizer Email K*********@t**********.com
Narrative At 13:51 on 11/30/2013 the station control panel programmable logic controller (plc) failed due to a digital input card failure. The plc failure caused the station to shut down and blow down. The station isolation valves and blowdown valve operated correctly and vented the station main gas piping. At the same time, the fuel gas vent valves opened, but the fuel gas isolation valves, hv-1014 and hv-1036 failed to close. The on-call technician arrived at the station at 16:15 and discovered gas venting through the fuel gas vent valves. At 16:25 the fuel gas vent valves were manually closed. The station was restored to service at 01:15 12/01/2013.

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