Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2015-03-09 — TX
Operator
Enterprise Products Operating Llc
Cause
Equipment Failure
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$225
Incident datetime
2015-03-09 06:00
Report number
Location
TX
Narrative
At 06:00 operations technician arrived at the real compressor station and discovered a relief valve venting natural gas to atmosphere on the c-200 compressor unit. Technician responded immediately and closed the isolation valve to the 3x4" relief valve thus, ending the event. This unit has two relief valves on the unit operating in parallel as a redundant system. Upon further investigation, it was determined that the relief valve lifted prematurely due to a leak on the sensing line for the relief valve due to excessive vibration. The sensing line tubing was replaced with additional supports to prevent future recurrence.
Detailed record list
Report Received Date
2015-04-02 00:00:00
Iyear
2015
Report Number
20150047
Supplemental Number
16710
Report Type
Original Final
Operator Id
31618
Name
Enterprise Products Operating Llc
Operator Street Address
1100 Louisiana Street
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Local Datetime
2015-03-09 05:00:00
Location Latitude
30.014769
Location Longitude
-99.500719
Nrc Rpt Num
1109995
Nrc Rpt Datetime
2015-03-09 07:40:00
Commodity Released Type
Natural Gas
Unintentional Release
6600
Intentional Release
0
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Shutdown Due Accident Ind
No
Shutdown Explain
Compressor Unit Was Not Shut Down Due To Having Redundant Relief Valves
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Incident Identified Datetime
2015-03-09 06:00:00
On Site Datetime
2015-03-09 06:00:00
On Off Shore
Onshore
Onshore State Abbreviation
Tx
Onshore Postal Code
78873
Onshore City Name
Leaky
Onshore County Name
Real
Designated Location
Milepost
Designated Name
Real Station
Pipe Fac Name
G************************@ ***********************
Segment Name
Line 146-Grey Ranch-New Braunfels
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
Intrastate
System Part Involved
Onshore Compressor Station Equipment And Piping
Item Involved
Valve
Valve Type
Relief Valve
Installation Year
2006
Material Involved
Carbon Steel
Release Type
Other
Release Type Details
Relief Valve Relieved Prematurely Due To Leak In Sensing Line Caused By Excessive Vibration
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
644
Heat Damage Ind
No
Non Heat Damage Ind
No
Hca Fatalities Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
16480
Est Cost Intentional Release
0
Est Cost Prop Damage
225
Est Cost Emergency
0
Est Cost Other
0
Prpty
16705
Accident Psig
765
Mop Psig
858
Mop Cfr Section
192.619(A)(1)
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
Yes
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
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
No, the operator did not find that an investigation of the controller(s) actions or control room issues was necessary. Since the controller or control room did not cause nor contribute to the incident. No pressure alarm thresholds were met; no alarms were activated. No other factors were determined requiring an investigation.
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 Relieved Prematurely Due To Leak In Sensing Line.
Preparer Name
M****** D* S****
Preparer Title
Compliance Specialist
Preparer Email
M******@e****.com
Preparer Telephone
713-381-5650
Authorizer Name
M****** D* S****
Authorizer Title
Compliance Specialist
Authorizer Telephone
713-381-5650
Authorizer Email
M******@e****.com
Narrative
At 06:00 operations technician arrived at the real compressor station and discovered a relief valve venting natural gas to atmosphere on the c-200 compressor unit. Technician responded immediately and closed the isolation valve to the 3x4" relief valve thus, ending the event. This unit has two relief valves on the unit operating in parallel as a redundant system. Upon further investigation, it was determined that the relief valve lifted prematurely due to a leak on the sensing line for the relief valve due to excessive vibration. The sensing line tubing was replaced with additional supports to prevent future recurrence.
| Report Received Date | 2015-04-02 00:00:00 |
|---|---|
| Iyear | 2015 |
| Report Number | 20150047 |
| Supplemental Number | 16710 |
| Report Type | Original Final |
| Operator Id | 31618 PHMSA Enforcement |
| Name | Enterprise Products Operating Llc |
| Operator Street Address | 1100 Louisiana Street |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77002 |
| Local Datetime | 2015-03-09 05:00:00 |
| Location Latitude | 30.014769 Google Maps OpenStreetMap |
| Location Longitude | -99.500719 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1109995 NRC Report How to search |
| Nrc Rpt Datetime | 2015-03-09 07:40:00 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 6600 |
| Intentional Release | 0 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | Compressor Unit Was Not Shut Down Due To Having Redundant Relief Valves |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2015-03-09 06:00:00 |
| On Site Datetime | 2015-03-09 06:00:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 78873 |
| Onshore City Name | Leaky |
| Onshore County Name | Real |
| Designated Location | Milepost |
| Designated Name | Real Station |
| Pipe Fac Name | G************************@ *********************** |
| Segment Name | Line 146-Grey Ranch-New Braunfels |
| 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 | Intrastate |
| System Part Involved | Onshore Compressor Station Equipment And Piping |
| Item Involved | Valve |
| Valve Type | Relief Valve |
| Installation Year | 2006 |
| Material Involved | Carbon Steel |
| Release Type | Other |
| Release Type Details | Relief Valve Relieved Prematurely Due To Leak In Sensing Line Caused By Excessive Vibration |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 644 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Hca Fatalities Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 16480 |
| Est Cost Intentional Release | 0 |
| Est Cost Prop Damage | 225 |
| Est Cost Emergency | 0 |
| Est Cost Other | 0 |
| Prpty | 16705 |
| Accident Psig | 765 |
| Mop Psig | 858 |
| Mop Cfr Section | 192.619(A)(1) 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 | Yes |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| 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 | No, the operator did not find that an investigation of the controller(s) actions or control room issues was necessary. Since the controller or control room did not cause nor contribute to the incident. No pressure alarm thresholds were met; no alarms were activated. No other factors were determined requiring an investigation. |
| 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 Relieved Prematurely Due To Leak In Sensing Line. |
| Preparer Name | M****** D* S**** |
| Preparer Title | Compliance Specialist |
| Preparer Email | M******@e****.com |
| Preparer Telephone | 713-381-5650 |
| Authorizer Name | M****** D* S**** |
| Authorizer Title | Compliance Specialist |
| Authorizer Telephone | 713-381-5650 |
| Authorizer Email | M******@e****.com |
| Narrative | At 06:00 operations technician arrived at the real compressor station and discovered a relief valve venting natural gas to atmosphere on the c-200 compressor unit. Technician responded immediately and closed the isolation valve to the 3x4" relief valve thus, ending the event. This unit has two relief valves on the unit operating in parallel as a redundant system. Upon further investigation, it was determined that the relief valve lifted prematurely due to a leak on the sensing line for the relief valve due to excessive vibration. The sensing line tubing was replaced with additional supports to prevent future recurrence. |
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