Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2020-08-03 — TX
Operator
Enterprise Products Operating Llc
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)
$2,500
Incident datetime
2020-08-03 20:40
Report number
Location
TX
Narrative
At approximately 19:44 ct on 08/03/2020, enterprise pipeline control received a hazardous gas detector alarm at the mont belvieu south terminal. An enterprise employee was dispatched to the site arriving at 20:30. The source of the release was located and line was isolated. Enterprise blew down approximately 1300 barrels to reduce line pressure to 0 psi, monitoring lel levels throughout. A gasket on a valve failed allowing product to escape. There was no indication that the pressure exceeded the mop of the system and the enterprise system was not flowing at the time of the release. The failed garlock gasket was replaced with a flexitallic gasket to stop the leak from recurring. Garlock gaskets will be replaced with flexitallic gaskets within this facility to prevent recurrence of a similar event. Nrc initial call # 1283608, nrc 48-hr follow-up # 1283776.
Detailed record list
Report Received Date
2020-09-02 00:00:00
Iyear
2020
Report Number
20200240
Supplemental Number
34446
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
Local Datetime
2020-08-03 20:40:00
Location Latitude
29.846515
Location Longitude
-94.896464
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
27.56
Intentional Release Bbls
1300
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
2020-08-03 20:40:00
System Part Involved
Onshore Terminal/tank Farm Equipment And Piping
On Off Shore
Onshore
Shutdown Due Accident Ind
No
Shutdown Explain
Pipeline Was Not Operating At The Time Of The Release
On Site Datetime
2020-08-03 20:30:00
Nrc Rpt Datetime
2020-08-03 22:53:00
Nrc Rpt Num
1283608
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Mont Belvieu South Terminal
Segment Name
P63a
Onshore State Abbreviation
Tx
Onshore Postal Code
77580
Onshore City Name
Mont Belvieu
Onshore County Name
Chambers
Designated Location
Milepost/valve Station
Designated Name
187+48
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
Interstate
Item Involved
Flange Assembly
Installation Year
Unknown
Material Involved
Material Other Than Carbon Steel
Material Details
Gylon
Release Type
Leak
Leak Type
Connection Failure
Wildlife Impact Ind
No
Soil Contamination
No
Long Term Assessment
No
Remediation Ind
No
Water Contam Ind
No
Could Be Hca
Yes
Commodity Reached Hca
Yes
Other Pop Ind
Yes
Other Pop Yes No
Yes
Usa Drinking Ind
Yes
Usa Drinking Yes No
Yes
Est Cost Oper Paid
0
Est Cost Gas Released
28241
Est Cost Prop Damage
2500
Est Cost Emergency
0
Est Cost Environmental
0
Est Cost Other
0
Prpty
30741
Accident Psig
1350
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
No
Cpm Conf Ind
No
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
Control room was not a causal factor
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Non-Threaded Connection Failure
Eq Failure Type
Non-Threaded Connection Failure
Other Non Threaded Ind
Gasket
Eq Additional Other Ind
Yes
Eq Additional Other Details
Gasket Was 50+ Years Old
Preparer Name
D**** B*****
Preparer Title
Pipeline Compliance Engineer
Preparer Email
D*******@e****.com
Preparer Telephone
7133815647
Prepared Date
2020-10-29 00:00:00
Authorizer Name
D**** B*****
Authorizer Telephone
7133815647
Authorizer Title
Pipeline Compliance Engineer
Authorizer Email
D*******@e****.com
Narrative
At approximately 19:44 ct on 08/03/2020, enterprise pipeline control received a hazardous gas detector alarm at the mont belvieu south terminal. An enterprise employee was dispatched to the site arriving at 20:30. The source of the release was located and line was isolated. Enterprise blew down approximately 1300 barrels to reduce line pressure to 0 psi, monitoring lel levels throughout. A gasket on a valve failed allowing product to escape. There was no indication that the pressure exceeded the mop of the system and the enterprise system was not flowing at the time of the release. The failed garlock gasket was replaced with a flexitallic gasket to stop the leak from recurring. Garlock gaskets will be replaced with flexitallic gaskets within this facility to prevent recurrence of a similar event. Nrc initial call # 1283608, nrc 48-hr follow-up # 1283776.
| Report Received Date | 2020-09-02 00:00:00 |
|---|---|
| Iyear | 2020 |
| Report Number | 20200240 |
| Supplemental Number | 34446 |
| 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 |
| Local Datetime | 2020-08-03 20:40:00 |
| Location Latitude | 29.846515 Google Maps OpenStreetMap |
| Location Longitude | -94.896464 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 | 27.56 |
| Intentional Release Bbls | 1300 |
| 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 | 2020-08-03 20:40:00 |
| System Part Involved | Onshore Terminal/tank Farm Equipment And Piping |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | Pipeline Was Not Operating At The Time Of The Release |
| On Site Datetime | 2020-08-03 20:30:00 |
| Nrc Rpt Datetime | 2020-08-03 22:53:00 |
| Nrc Rpt Num | 1283608 NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Mont Belvieu South Terminal |
| Segment Name | P63a |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 77580 |
| Onshore City Name | Mont Belvieu |
| Onshore County Name | Chambers |
| Designated Location | Milepost/valve Station |
| Designated Name | 187+48 |
| 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 | Interstate |
| Item Involved | Flange Assembly |
| Installation Year | Unknown |
| Material Involved | Material Other Than Carbon Steel |
| Material Details | Gylon |
| Release Type | Leak |
| Leak Type | Connection Failure |
| Wildlife Impact Ind | No |
| Soil Contamination | No |
| Long Term Assessment | No |
| Remediation Ind | No |
| Water Contam Ind | No |
| Could Be Hca | Yes |
| Commodity Reached Hca | Yes |
| Other Pop Ind | Yes |
| Other Pop Yes No | Yes |
| Usa Drinking Ind | Yes |
| Usa Drinking Yes No | Yes |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 28241 |
| Est Cost Prop Damage | 2500 |
| Est Cost Emergency | 0 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 30741 |
| Accident Psig | 1350 |
| 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 | No |
| Cpm Conf Ind | No |
| 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 | Control room was not a causal factor |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Non-Threaded Connection Failure |
| Eq Failure Type | Non-Threaded Connection Failure |
| Other Non Threaded Ind | Gasket |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | Gasket Was 50+ Years Old |
| Preparer Name | D**** B***** |
| Preparer Title | Pipeline Compliance Engineer |
| Preparer Email | D*******@e****.com |
| Preparer Telephone | 7133815647 |
| Prepared Date | 2020-10-29 00:00:00 |
| Authorizer Name | D**** B***** |
| Authorizer Telephone | 7133815647 |
| Authorizer Title | Pipeline Compliance Engineer |
| Authorizer Email | D*******@e****.com |
| Narrative | At approximately 19:44 ct on 08/03/2020, enterprise pipeline control received a hazardous gas detector alarm at the mont belvieu south terminal. An enterprise employee was dispatched to the site arriving at 20:30. The source of the release was located and line was isolated. Enterprise blew down approximately 1300 barrels to reduce line pressure to 0 psi, monitoring lel levels throughout. A gasket on a valve failed allowing product to escape. There was no indication that the pressure exceeded the mop of the system and the enterprise system was not flowing at the time of the release. The failed garlock gasket was replaced with a flexitallic gasket to stop the leak from recurring. Garlock gaskets will be replaced with flexitallic gaskets within this facility to prevent recurrence of a similar event. Nrc initial call # 1283608, nrc 48-hr follow-up # 1283776. |
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