Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2023-05-01 — TX
Operator
Enterprise Products Operating Llc
Cause
Equipment Failure
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$0
Incident datetime
2023-05-01 00:00 UTC
Report number
Location
TX
Narrative
On april 12, 2023, at about 1420hrs operations technician was contacted by a guard at a neighboring road concerning a sound coming from the pearsall compressor station. The technician notified hcc of the report and headed to the station to investigate. At about 1517hrs, the technician received additional information from the guard and notified hcc who shut down the compressor. At about 1630hrs, the technician arrived at the station and confirmed the psv on unit 1 had relieved. The psv was disassembled, and condensate was found in the sensing tube and pilot, causing the psv to lift prematurely. The pilot was rebuilt using new parts, and a drain line with a liquids trap was fitted to the pilot. On april 13, at 1623hrs, after reviewing scada information, enterprise determined the relief valve discharged 4.7 mmscf of natural gas, thus, meeting the definition of an incident per 49 cfr 191.3. The trrc was notified on at 1638hrs, incident number 2822.
Detailed record list
Report Received Date
2023-05-01 00:00:00
Iyear
2023
Report Number
20230040
Supplemental Number
38502
Report Type
Supplemental 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
Time Zone
Central
Daylight Savings Ind
Yes
Location Latitude
28.745223
Location Longitude
-99.015645
Nrc Rpt Num
1364703
Additional Nrc Report Numbers
1364857
Commodity Released Type
Natural Gas
Unintentional Release
4700
Intentional Release
0
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Status When Identified
Normal Operation, Includes Pauses During Maintenance
Shutdown Due Accident Ind
Yes
Communication State Fed Ind
No
Ignite Ind
No
Num Pub Evacuated
0
On Off Shore
Onshore
Onshore State Abbreviation
Tx
Onshore Postal Code
78061
Onshore City Name
Pearsall
Onshore County Name
Frio
Designated Location
Not Applicable
Pipe Fac Name
Pearsall Compressor Station
Segment Name
Compressor, Unit-1
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
Regulator/control Valve
Installation Year
Unknown
Manufactured Year
Unknown
Material Involved
Material Other Than Carbon Steel Or Plastic
Material Details
Psv Consumable Parts
Release Type
Leak
Leak Type
Other
Leak Type Other
Psv Opened Up Prematurely
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
99
Heat Damage Ind
No
Non Heat Damage Ind
No
Did Occur In Mca Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
34780
Est Cost Intentional Release
0
Est Cost Prop Damage
0
Est Cost Emergency
0
Est Cost Other
2000
Est Cost Other Details
Third-Party Repair, Test And Calibrate Unit-1 Discharge Psv's Pilot
Gas Cost In Mcf
7.4
Prpty
36780
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Wildlife Impact Ind
No
Accident Psig
995
Gas Flow In Pipe In Mcf
90000
Mop Psig
1099
Mop Cfr Section
192.619(A)(1)
Maop Established Date
2019-11-15 00:00:00
Maop Reversal Flow Ind
No
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
No
Gas Required Odorized Ind
No
Pipeline Function
Type C Gathering
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
No
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 event was due to equipment failure and the controller shut down the unit upon notification of the failure.
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
Other Control Relief Ind
Yes
Other Control Relief Details
Compressor-Related Equipment: Compressor (Unit 1) Discharge Psv (Pressure Safety Valve).
Eq Additional Other Ind
Yes
Eq Additional Other Details
Condensate In Tubing & Pilot, And Normal Wear Of Pilot's Consumable Kit
Preparer Name
A*** S******
Preparer Title
Sr. Pipeline Compliance Specialist
Preparer Email
A*******@e****.com
Preparer Telephone
713-381-6741
Authorizer Name
N*** T*****
Authorizer Title
Sr. Compliance Manager
Authorizer Telephone
713-381-2493
Authorizer Email
N*******@e****.com
Narrative
On april 12, 2023, at about 1420hrs operations technician was contacted by a guard at a neighboring road concerning a sound coming from the pearsall compressor station. The technician notified hcc of the report and headed to the station to investigate. At about 1517hrs, the technician received additional information from the guard and notified hcc who shut down the compressor. At about 1630hrs, the technician arrived at the station and confirmed the psv on unit 1 had relieved. The psv was disassembled, and condensate was found in the sensing tube and pilot, causing the psv to lift prematurely. The pilot was rebuilt using new parts, and a drain line with a liquids trap was fitted to the pilot. On april 13, at 1623hrs, after reviewing scada information, enterprise determined the relief valve discharged 4.7 mmscf of natural gas, thus, meeting the definition of an incident per 49 cfr 191.3. The trrc was notified on at 1638hrs, incident number 2822.
| Report Received Date | 2023-05-01 00:00:00 |
|---|---|
| Iyear | 2023 |
| Report Number | 20230040 |
| Supplemental Number | 38502 |
| Report Type | Supplemental 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 |
| Time Zone | Central |
| Daylight Savings Ind | Yes |
| Location Latitude | 28.745223 Google Maps OpenStreetMap |
| Location Longitude | -99.015645 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1364703 NRC Report How to search |
| Additional Nrc Report Numbers | 1364857 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 4700 |
| Intentional Release | 0 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Status When Identified | Normal Operation, Includes Pauses During Maintenance |
| Shutdown Due Accident Ind | Yes |
| Communication State Fed Ind | No |
| Ignite Ind | No |
| Num Pub Evacuated | 0 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 78061 |
| Onshore City Name | Pearsall |
| Onshore County Name | Frio |
| Designated Location | Not Applicable |
| Pipe Fac Name | Pearsall Compressor Station |
| Segment Name | Compressor, Unit-1 |
| 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 | Regulator/control Valve |
| Installation Year | Unknown |
| Manufactured Year | Unknown |
| Material Involved | Material Other Than Carbon Steel Or Plastic |
| Material Details | Psv Consumable Parts |
| Release Type | Leak |
| Leak Type | Other |
| Leak Type Other | Psv Opened Up Prematurely |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 99 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Did Occur In Mca Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 34780 |
| Est Cost Intentional Release | 0 |
| Est Cost Prop Damage | 0 |
| Est Cost Emergency | 0 |
| Est Cost Other | 2000 |
| Est Cost Other Details | Third-Party Repair, Test And Calibrate Unit-1 Discharge Psv's Pilot |
| Gas Cost In Mcf | 7.4 |
| Prpty | 36780 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Wildlife Impact Ind | No |
| Accident Psig | 995 |
| Gas Flow In Pipe In Mcf | 90000 |
| Mop Psig | 1099 |
| Mop Cfr Section | 192.619(A)(1) View CFR 49 §192 |
| Maop Established Date | 2019-11-15 00:00:00 |
| Maop Reversal Flow Ind | No |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Pressure Restriction Ind | No |
| Gas Required Odorized Ind | No |
| Pipeline Function | Type C Gathering |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | No |
| 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 event was due to equipment failure and the controller shut down the unit upon notification of the failure. |
| 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 |
| Other Control Relief Ind | Yes |
| Other Control Relief Details | Compressor-Related Equipment: Compressor (Unit 1) Discharge Psv (Pressure Safety Valve). |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | Condensate In Tubing & Pilot, And Normal Wear Of Pilot's Consumable Kit |
| Preparer Name | A*** S****** |
| Preparer Title | Sr. Pipeline Compliance Specialist |
| Preparer Email | A*******@e****.com |
| Preparer Telephone | 713-381-6741 |
| Authorizer Name | N*** T***** |
| Authorizer Title | Sr. Compliance Manager |
| Authorizer Telephone | 713-381-2493 |
| Authorizer Email | N*******@e****.com |
| Narrative | On april 12, 2023, at about 1420hrs operations technician was contacted by a guard at a neighboring road concerning a sound coming from the pearsall compressor station. The technician notified hcc of the report and headed to the station to investigate. At about 1517hrs, the technician received additional information from the guard and notified hcc who shut down the compressor. At about 1630hrs, the technician arrived at the station and confirmed the psv on unit 1 had relieved. The psv was disassembled, and condensate was found in the sensing tube and pilot, causing the psv to lift prematurely. The pilot was rebuilt using new parts, and a drain line with a liquids trap was fitted to the pilot. On april 13, at 1623hrs, after reviewing scada information, enterprise determined the relief valve discharged 4.7 mmscf of natural gas, thus, meeting the definition of an incident per 49 cfr 191.3. The trrc was notified on at 1638hrs, incident number 2822. |
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