Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2014-06-23 — TX
Operator
Dcp Midstream
Cause
Equipment Failure
Commodity
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$0
Incident datetime
2014-06-23 04:10
Report number
Location
TX
Narrative
At approximately 4:10 am at dcp midstream ramsey meter station located near orla, tx, one of the relief valves relieved at 1300 psig, venting approximately 473 barrels of ngl to atmosphere. Mop of the system is 1440 psig. Dcp hcc received the first alarm at 2:46 am. At 4:10 am the controller notified ramsey plant that they were seeing gas detector alarms. The ramsey operator confirmed visual that the relief valve was venting at 4:40 am. Dcp controller instructed ramsey operator to cut back on the flow to lower the pressure on the system. At 6 am dcp controller notified the field supervisor of the release. The field supervisor dispatched field technician to the site to investigate the release. At 6:38 am dcp hcc ngl supervisor instructed the controller to shut down the magellan lateral. At 9:40 am ngl field technician was on site and visually confirmed that the relief valve was no longer relieving product. However, visual indicators confirmed that a release had occurred on the relief valve. The relief valve was iced over. At 9:50 am ngl hcc supervisor instructed the controller to start-up the magellan lateral. Ngl field technician was on-site monitoring facility. The investigation determined that dcp will remove the relief valve from the customer's piping upstream of the dcp high pressure shutdown valve. Relief valve is not needed at this location for pressure control. Supplemental - 10/6/2014 relief valve was removed from upstream of esdv and pressure transmitter was relocated from upstream of esdv to downstream on 8/4/2014. The fire and thermal expansion relief valves on meter run were changed out to anderson greenwood's at the same time for better reliability.
Detailed record list
Report Received Date
2014-07-10 00:00:00
Iyear
2014
Report Number
20140262
Supplemental Number
19784
Report Type
Supplemental Final
Operator Id
31130
Name
Dcp Midstream
Operator Street Address
2331 Citywest Blvd. Hq-08-S812-02
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77042
Local Datetime
2014-06-23 04:10:00
Location Latitude
31.553051
Location Longitude
-104.11549
Commodity Released Type
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Commodity Subtype
Lpg (Liquefied Petroleum Gas) / Ngl (Natural Gas Liquid)
Unintentional Release Bbls
473
Intentional Release Bbls
0
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Cpm Leak Detection System Or Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Calculations)
Incident Identified Datetime
2014-06-23 04:10:00
System Part Involved
Onshore Pump/meter Station Equipment And Piping
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2014-06-23 06:38:00
Restart Datetime
2014-06-23 09:50:00
On Site Datetime
2014-06-23 04:40:00
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Ramsey Meter Station
Segment Name
Magellan Lateral Mg-1
Onshore State Abbreviation
Tx
Onshore Postal Code
79770
Onshore City Name
Orla
Onshore County Name
Culverson
Designated Location
Milepost/valve Station
Designated Name
Ramsey Meter
Federal
No
Location Type
Totally Contained On Operator-Controlled Property
Incident Area Type
Aboveground
Incident Area Subtype
Typical Aboveground Facility Piping Or Appurtenance
Crossing
No
Pipe Facility Type
Intrastate
Item Involved
Other
Item Involved Details
Relief Valve
Installation Year
2013
Material Involved
Carbon Steel
Release Type
Other
Release Type Details
Relief Valve Released
Wildlife Impact Ind
No
Soil Contamination
No
Long Term Assessment
No
Remediation Ind
No
Water Contam Ind
No
Could Be Hca
No
Commodity Reached Hca
No
Est Cost Oper Paid
0
Est Cost Gas Released
1892
Est Cost Prop Damage
0
Est Cost Emergency
0
Est Cost Environmental
0
Est Cost Other
0
Prpty
1892
Accident Psig
1300
Mop Psig
1440
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Pipeline Function
> 20% Smys Regulated Transmission
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
Yes
Scada Conf Ind
Yes
Cpm In Place Ind
Yes
Cpm Operating Ind
Yes
Cpm Functional Ind
Yes
Cpm Detection Ind
Yes
Cpm Conf Ind
Yes
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
Dcp conducted an investigation of the controllers response to the release and it was determined that it was the result of improper design of the metering 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
Relief Valve Ind
Yes
Eq Additional Other Ind
Yes
Eq Additional Other Details
Relief Valve Was Installed On The Customer Side Of Esdv - Needs Relocated
Preparer Name
B****** C P*****
Preparer Title
Director Ngl Compliance
Preparer Email
B*******@d***********.com
Preparer Telephone
713-268-7400
Preparer Fax
713-735-3110
Prepared Date
2014-10-09 00:00:00
Authorizer Name
D**** L M*****
Authorizer Telephone
303-605-2214
Authorizer Title
Dir Pipeline Compliance And Integrity
Authorizer Email
D*******@d***********.com
Narrative
At approximately 4:10 am at dcp midstream ramsey meter station located near orla, tx, one of the relief valves relieved at 1300 psig, venting approximately 473 barrels of ngl to atmosphere. Mop of the system is 1440 psig. Dcp hcc received the first alarm at 2:46 am. At 4:10 am the controller notified ramsey plant that they were seeing gas detector alarms. The ramsey operator confirmed visual that the relief valve was venting at 4:40 am. Dcp controller instructed ramsey operator to cut back on the flow to lower the pressure on the system. At 6 am dcp controller notified the field supervisor of the release. The field supervisor dispatched field technician to the site to investigate the release. At 6:38 am dcp hcc ngl supervisor instructed the controller to shut down the magellan lateral. At 9:40 am ngl field technician was on site and visually confirmed that the relief valve was no longer relieving product. However, visual indicators confirmed that a release had occurred on the relief valve. The relief valve was iced over. At 9:50 am ngl hcc supervisor instructed the controller to start-up the magellan lateral. Ngl field technician was on-site monitoring facility. The investigation determined that dcp will remove the relief valve from the customer's piping upstream of the dcp high pressure shutdown valve. Relief valve is not needed at this location for pressure control. Supplemental - 10/6/2014 relief valve was removed from upstream of esdv and pressure transmitter was relocated from upstream of esdv to downstream on 8/4/2014. The fire and thermal expansion relief valves on meter run were changed out to anderson greenwood's at the same time for better reliability.
| Report Received Date | 2014-07-10 00:00:00 |
|---|---|
| Iyear | 2014 |
| Report Number | 20140262 |
| Supplemental Number | 19784 |
| Report Type | Supplemental Final |
| Operator Id | 31130 PHMSA Enforcement |
| Name | Dcp Midstream |
| Operator Street Address | 2331 Citywest Blvd. Hq-08-S812-02 |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77042 |
| Local Datetime | 2014-06-23 04:10:00 |
| Location Latitude | 31.553051 Google Maps OpenStreetMap |
| Location Longitude | -104.11549 Google Maps OpenStreetMap |
| Commodity Released Type | Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions |
| Commodity Subtype | Lpg (Liquefied Petroleum Gas) / Ngl (Natural Gas Liquid) |
| Unintentional Release Bbls | 473 |
| Intentional Release Bbls | 0 |
| Recovered Bbls | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Cpm Leak Detection System Or Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Calculations) |
| Incident Identified Datetime | 2014-06-23 04:10:00 |
| System Part Involved | Onshore Pump/meter Station Equipment And Piping |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2014-06-23 06:38:00 |
| Restart Datetime | 2014-06-23 09:50:00 |
| On Site Datetime | 2014-06-23 04:40:00 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Ramsey Meter Station |
| Segment Name | Magellan Lateral Mg-1 |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 79770 |
| Onshore City Name | Orla |
| Onshore County Name | Culverson |
| Designated Location | Milepost/valve Station |
| Designated Name | Ramsey Meter |
| Federal | No |
| Location Type | Totally Contained On Operator-Controlled Property |
| Incident Area Type | Aboveground |
| Incident Area Subtype | Typical Aboveground Facility Piping Or Appurtenance |
| Crossing | No |
| Pipe Facility Type | Intrastate |
| Item Involved | Other |
| Item Involved Details | Relief Valve |
| Installation Year | 2013 |
| Material Involved | Carbon Steel |
| Release Type | Other |
| Release Type Details | Relief Valve Released |
| Wildlife Impact Ind | No |
| Soil Contamination | No |
| Long Term Assessment | No |
| Remediation Ind | No |
| Water Contam Ind | No |
| Could Be Hca | No |
| Commodity Reached Hca | No |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 1892 |
| Est Cost Prop Damage | 0 |
| Est Cost Emergency | 0 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 1892 |
| Accident Psig | 1300 |
| Mop Psig | 1440 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Pipeline Function | > 20% Smys Regulated Transmission |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | Yes |
| Scada Conf Ind | Yes |
| Cpm In Place Ind | Yes |
| Cpm Operating Ind | Yes |
| Cpm Functional Ind | Yes |
| Cpm Detection Ind | Yes |
| Cpm Conf Ind | Yes |
| 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 | Dcp conducted an investigation of the controllers response to the release and it was determined that it was the result of improper design of the metering 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 |
| Relief Valve Ind | Yes |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | Relief Valve Was Installed On The Customer Side Of Esdv - Needs Relocated |
| Preparer Name | B****** C P***** |
| Preparer Title | Director Ngl Compliance |
| Preparer Email | B*******@d***********.com |
| Preparer Telephone | 713-268-7400 |
| Preparer Fax | 713-735-3110 |
| Prepared Date | 2014-10-09 00:00:00 |
| Authorizer Name | D**** L M***** |
| Authorizer Telephone | 303-605-2214 |
| Authorizer Title | Dir Pipeline Compliance And Integrity |
| Authorizer Email | D*******@d***********.com |
| Narrative | At approximately 4:10 am at dcp midstream ramsey meter station located near orla, tx, one of the relief valves relieved at 1300 psig, venting approximately 473 barrels of ngl to atmosphere. Mop of the system is 1440 psig. Dcp hcc received the first alarm at 2:46 am. At 4:10 am the controller notified ramsey plant that they were seeing gas detector alarms. The ramsey operator confirmed visual that the relief valve was venting at 4:40 am. Dcp controller instructed ramsey operator to cut back on the flow to lower the pressure on the system. At 6 am dcp controller notified the field supervisor of the release. The field supervisor dispatched field technician to the site to investigate the release. At 6:38 am dcp hcc ngl supervisor instructed the controller to shut down the magellan lateral. At 9:40 am ngl field technician was on site and visually confirmed that the relief valve was no longer relieving product. However, visual indicators confirmed that a release had occurred on the relief valve. The relief valve was iced over. At 9:50 am ngl hcc supervisor instructed the controller to start-up the magellan lateral. Ngl field technician was on-site monitoring facility. The investigation determined that dcp will remove the relief valve from the customer's piping upstream of the dcp high pressure shutdown valve. Relief valve is not needed at this location for pressure control. Supplemental - 10/6/2014 relief valve was removed from upstream of esdv and pressure transmitter was relocated from upstream of esdv to downstream on 8/4/2014. The fire and thermal expansion relief valves on meter run were changed out to anderson greenwood's at the same time for better reliability. |
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