Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2015-12-24 — TX
Operator
Mojave Pipeline Operating Company
Cause
Equipment Failure
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$3,129
Incident datetime
2015-12-24 20:08
Report number
Location
TX
Narrative
On 12/24/15 at 6:30 pm pst, the daggett fire department notified mojave km personnel of an odor complaint coming from the daggett compressor station. At 6:39 pm: a technician was dispatched to investigate the complaint. At 8:08 pm: the technician arrived on site and after inspecting the site he discovered that the unit vent valve was open and venting gas. At 8:42 pm: the tech manually isolated the leak by closing the loading valve. At 10:12 pm: the nrc was notified of the release by km codes and standards personnel. An internal investigation was performed and it was determined that the root cause for this incident involved a faulty limit switch that resulted in a suction valve not closing properly. Mojave personnel were attempting to start this unit at daggett station as a part of their annual maintenance on december 22, 2015. Daggett station was offline at the time of the incident. The limit switch was replaced and frequency of inspections/maintenance on limit switches and valves have been increased.
Detailed record list
Report Received Date
2016-01-20 00:00:00
Iyear
2015
Report Number
20160006
Supplemental Number
17089
Report Type
Supplemental Final
Operator Id
Name
Mojave Pipeline Operating Company
Operator Street Address
1001 Louisiana St, Suite 1000
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Local Datetime
2015-12-24 20:08:00
Location Latitude
34.851389
Location Longitude
-116.8503609
Nrc Rpt Num
1136620
Nrc Rpt Datetime
2015-12-25 22:12:00
Commodity Released Type
Natural Gas
Unintentional Release
14707
Intentional Release
20
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Shutdown Due Accident Ind
No
Shutdown Explain
Station Was Offline Since Jan 2015.
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Incident Identified Datetime
2015-12-24 20:08:00
On Site Datetime
2015-12-24 20:08:00
On Off Shore
Onshore
Onshore State Abbreviation
Ca
Onshore Postal Code
92327
Onshore City Name
Daggett
Onshore County Name
San Bernadino
Designated Location
Survey Station No.
Designated Name
Daggett Stn.
Pipe Fac Name
Mojave Daggett Compressor Station
Segment Name
Mojave Daggett Compressor Station
Federal
Yes
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
Instrumentation
Installation Year
1992
Material Involved
Material Other Than Carbon Steel Or Plastic
Material Details
Faulty Limit Switch
Release Type
Other
Release Type Details
Faulty Limit Switch For The Suction Valve Was Out Of Adjustment, Indicated To Control Room That Suction Valve Was Fully Closed. Valve Did Not Close Properly, Allowing Gas To Vent Out To Atmosphere.
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
127
Heat Damage Ind
No
Non Heat Damage Ind
No
Hca Fatalities Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
29414
Est Cost Intentional Release
40
Est Cost Prop Damage
3129
Est Cost Emergency
0
Est Cost Other
0
Prpty
32583
Accident Psig
57
Mop Psig
941
Mop Cfr Section
Other
Mop Cfr Section Details
Pressure Test
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
No
Pipeline Function
Transmission System
Scada In Place Ind
No
Accident Identifier
Notification From Emergency Responder
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
Equipment Failure
Cause Details
Compressor Or Compressor-Related Equipment
Eq Failure Type
Compressor Or Compressor-Related Equipment
Other Compressor Ind
Other
Other Compressor Details
Faulty Limit Switch
Eq Additional Other Ind
Yes
Eq Additional Other Details
Faulty Limit Switch
Preparer Name
V****** B******
Preparer Title
Pipeline Engineer I-Compliance
Preparer Email
V**************@k***********.com
Preparer Telephone
7134204810
Authorizer Name
V****** B******
Authorizer Title
Pipeline Engineer I-Compliance
Authorizer Telephone
7134204810
Authorizer Email
V**************@k***********.com
Narrative
On 12/24/15 at 6:30 pm pst, the daggett fire department notified mojave km personnel of an odor complaint coming from the daggett compressor station. At 6:39 pm: a technician was dispatched to investigate the complaint. At 8:08 pm: the technician arrived on site and after inspecting the site he discovered that the unit vent valve was open and venting gas. At 8:42 pm: the tech manually isolated the leak by closing the loading valve. At 10:12 pm: the nrc was notified of the release by km codes and standards personnel. An internal investigation was performed and it was determined that the root cause for this incident involved a faulty limit switch that resulted in a suction valve not closing properly. Mojave personnel were attempting to start this unit at daggett station as a part of their annual maintenance on december 22, 2015. Daggett station was offline at the time of the incident. The limit switch was replaced and frequency of inspections/maintenance on limit switches and valves have been increased.
| Report Received Date | 2016-01-20 00:00:00 |
|---|---|
| Iyear | 2015 |
| Report Number | 20160006 |
| Supplemental Number | 17089 |
| Report Type | Supplemental Final |
| Operator Id | 840 PHMSA Enforcement |
| Name | Mojave Pipeline Operating Company |
| Operator Street Address | 1001 Louisiana St, Suite 1000 |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77002 |
| Local Datetime | 2015-12-24 20:08:00 |
| Location Latitude | 34.851389 Google Maps OpenStreetMap |
| Location Longitude | -116.8503609 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1136620 NRC Report How to search |
| Nrc Rpt Datetime | 2015-12-25 22:12:00 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 14707 |
| Intentional Release | 20 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | Station Was Offline Since Jan 2015. |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2015-12-24 20:08:00 |
| On Site Datetime | 2015-12-24 20:08:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Ca |
| Onshore Postal Code | 92327 |
| Onshore City Name | Daggett |
| Onshore County Name | San Bernadino |
| Designated Location | Survey Station No. |
| Designated Name | Daggett Stn. |
| Pipe Fac Name | Mojave Daggett Compressor Station |
| Segment Name | Mojave Daggett Compressor Station |
| Federal | Yes |
| 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 | Instrumentation |
| Installation Year | 1992 |
| Material Involved | Material Other Than Carbon Steel Or Plastic |
| Material Details | Faulty Limit Switch |
| Release Type | Other |
| Release Type Details | Faulty Limit Switch For The Suction Valve Was Out Of Adjustment, Indicated To Control Room That Suction Valve Was Fully Closed. Valve Did Not Close Properly, Allowing Gas To Vent Out To Atmosphere. |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 127 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Hca Fatalities Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 29414 |
| Est Cost Intentional Release | 40 |
| Est Cost Prop Damage | 3129 |
| Est Cost Emergency | 0 |
| Est Cost Other | 0 |
| Prpty | 32583 |
| Accident Psig | 57 |
| Mop Psig | 941 |
| Mop Cfr Section | Other View CFR 49 §192 |
| Mop Cfr Section Details | Pressure Test |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Pressure Restriction Ind | No |
| Pipeline Function | Transmission System |
| Scada In Place Ind | No |
| Accident Identifier | Notification From Emergency Responder |
| 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 | Equipment Failure |
| Cause Details | Compressor Or Compressor-Related Equipment |
| Eq Failure Type | Compressor Or Compressor-Related Equipment |
| Other Compressor Ind | Other |
| Other Compressor Details | Faulty Limit Switch |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | Faulty Limit Switch |
| Preparer Name | V****** B****** |
| Preparer Title | Pipeline Engineer I-Compliance |
| Preparer Email | V**************@k***********.com |
| Preparer Telephone | 7134204810 |
| Authorizer Name | V****** B****** |
| Authorizer Title | Pipeline Engineer I-Compliance |
| Authorizer Telephone | 7134204810 |
| Authorizer Email | V**************@k***********.com |
| Narrative | On 12/24/15 at 6:30 pm pst, the daggett fire department notified mojave km personnel of an odor complaint coming from the daggett compressor station. At 6:39 pm: a technician was dispatched to investigate the complaint. At 8:08 pm: the technician arrived on site and after inspecting the site he discovered that the unit vent valve was open and venting gas. At 8:42 pm: the tech manually isolated the leak by closing the loading valve. At 10:12 pm: the nrc was notified of the release by km codes and standards personnel. An internal investigation was performed and it was determined that the root cause for this incident involved a faulty limit switch that resulted in a suction valve not closing properly. Mojave personnel were attempting to start this unit at daggett station as a part of their annual maintenance on december 22, 2015. Daggett station was offline at the time of the incident. The limit switch was replaced and frequency of inspections/maintenance on limit switches and valves have been increased. |
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