Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2020-07-06 — TX
Operator
Exxonmobil Pipeline Co
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)
$15,000
Incident datetime
2020-07-06 08:00
Report number
Location
TX
Narrative
While conducting daily audio, visual, and olfactory (avo) walkthrough within the mont belvieu storage, the operator detected a fugitive emission coming from tx-213 ethylene trap at 8:00 a.M. While working to mitigate emission source, operations coordinated efforts to activate bypass operations, allowing to isolate the leak source, perform maintenance, remove the valve, and send off valve for repair. A failure analysis was conducted on the valve, concluding external corrosion around the machined sealing surface of the valve stem. An estimated .212 barrels / 8.898 gallons / 19.210 pounds of ethylene was released to the atmosphere.
Detailed record list
Report Received Date
2020-08-05 00:00:00
Iyear
2020
Report Number
20200224
Supplemental Number
34110
Report Type
Original Final
Operator Id
4906
Name
Exxonmobil Pipeline Co
Operator Street Address
22777 Springwoods Village Parkway E2.2b-Emp
Operator City Name
Spring
Operator State Abbreviation
TX
Operator Postal Code
77389
Local Datetime
2020-07-06 08:00:00
Location Latitude
29.846481
Location Longitude
-94.903728
Commodity Released Type
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Commodity Subtype
Other Hvl
Commodity Details
Ethylene
Unintentional Release Bbls
0.21
Intentional Release Bbls
0
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
Incident Identified Datetime
2020-07-06 08:00:00
System Part Involved
Onshore Equipment And Piping Associated With Belowground Storage
On Off Shore
Onshore
Shutdown Due Accident Ind
No
Shutdown Explain
Opened Manual Bypass Valve Around The Trap To Isolate
On Site Datetime
2020-07-06 08:00:00
Nrc Rpt Num
Nrc Notification Not Required
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Mont Belvieu Storage Facility
Segment Name
Tx-213 Valve Trap
Onshore State Abbreviation
Tx
Onshore Postal Code
77580
Onshore City Name
Mont Belvieu
Onshore County Name
Chambers
Designated Location
Milepost/valve Station
Designated Name
Tx-213 Trap
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
Valve
Valve Type
Auxiliary Or Other Valve
Installation Year
Unknown
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Seal Or Packing
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
0
Est Cost Prop Damage
15000
Est Cost Emergency
0
Est Cost Environmental
0
Est Cost Other
0
Prpty
15000
Accident Psig
1250
Mop Psig
2160
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Pipeline Function
> 20% Smys Regulated Transmission
Scada In Place Ind
No
Cpm In Place Ind
No
Investigation Status
No, the facility was not monitored by a controller(s) at the time of the accident
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Other Equipment Failure
Eq Failure Type
Other Equipment Failure
Failure Details
Valve Packing Leak
Eq Additional Other Ind
Yes
Eq Additional Other Details
Corrosion Around The Machined Sealing Surface Of The Valve Stem
Preparer Name
D**** R* S*****
Preparer Title
Pipeline Safety Advisor
Preparer Email
D*************@e*********.com
Preparer Telephone
8326247531
Prepared Date
2020-08-05 00:00:00
Authorizer Name
C******* B* H********
Authorizer Telephone
8326247920
Authorizer Title
Empco Sshe Manager
Authorizer Email
C*******************@e*********.com
Narrative
While conducting daily audio, visual, and olfactory (avo) walkthrough within the mont belvieu storage, the operator detected a fugitive emission coming from tx-213 ethylene trap at 8:00 a.M. While working to mitigate emission source, operations coordinated efforts to activate bypass operations, allowing to isolate the leak source, perform maintenance, remove the valve, and send off valve for repair. A failure analysis was conducted on the valve, concluding external corrosion around the machined sealing surface of the valve stem. An estimated .212 barrels / 8.898 gallons / 19.210 pounds of ethylene was released to the atmosphere.
| Report Received Date | 2020-08-05 00:00:00 |
|---|---|
| Iyear | 2020 |
| Report Number | 20200224 |
| Supplemental Number | 34110 |
| Report Type | Original Final |
| Operator Id | 4906 PHMSA Enforcement |
| Name | Exxonmobil Pipeline Co |
| Operator Street Address | 22777 Springwoods Village Parkway E2.2b-Emp |
| Operator City Name | Spring |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77389 |
| Local Datetime | 2020-07-06 08:00:00 |
| Location Latitude | 29.846481 Google Maps OpenStreetMap |
| Location Longitude | -94.903728 Google Maps OpenStreetMap |
| Commodity Released Type | Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions |
| Commodity Subtype | Other Hvl |
| Commodity Details | Ethylene |
| Unintentional Release Bbls | 0.21 |
| Intentional Release Bbls | 0 |
| Recovered Bbls | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| Incident Identified Datetime | 2020-07-06 08:00:00 |
| System Part Involved | Onshore Equipment And Piping Associated With Belowground Storage |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | Opened Manual Bypass Valve Around The Trap To Isolate |
| On Site Datetime | 2020-07-06 08:00:00 |
| Nrc Rpt Num | Nrc Notification Not Required NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Mont Belvieu Storage Facility |
| Segment Name | Tx-213 Valve Trap |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 77580 |
| Onshore City Name | Mont Belvieu |
| Onshore County Name | Chambers |
| Designated Location | Milepost/valve Station |
| Designated Name | Tx-213 Trap |
| 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 | Valve |
| Valve Type | Auxiliary Or Other Valve |
| Installation Year | Unknown |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Seal Or Packing |
| 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 | 0 |
| Est Cost Prop Damage | 15000 |
| Est Cost Emergency | 0 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 15000 |
| Accident Psig | 1250 |
| Mop Psig | 2160 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Pipeline Function | > 20% Smys Regulated Transmission |
| Scada In Place Ind | No |
| Cpm In Place Ind | No |
| Investigation Status | No, the facility was not monitored by a controller(s) at the time of the accident |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Other Equipment Failure |
| Eq Failure Type | Other Equipment Failure |
| Failure Details | Valve Packing Leak |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | Corrosion Around The Machined Sealing Surface Of The Valve Stem |
| Preparer Name | D**** R* S***** |
| Preparer Title | Pipeline Safety Advisor |
| Preparer Email | D*************@e*********.com |
| Preparer Telephone | 8326247531 |
| Prepared Date | 2020-08-05 00:00:00 |
| Authorizer Name | C******* B* H******** |
| Authorizer Telephone | 8326247920 |
| Authorizer Title | Empco Sshe Manager |
| Authorizer Email | C*******************@e*********.com |
| Narrative | While conducting daily audio, visual, and olfactory (avo) walkthrough within the mont belvieu storage, the operator detected a fugitive emission coming from tx-213 ethylene trap at 8:00 a.M. While working to mitigate emission source, operations coordinated efforts to activate bypass operations, allowing to isolate the leak source, perform maintenance, remove the valve, and send off valve for repair. A failure analysis was conducted on the valve, concluding external corrosion around the machined sealing surface of the valve stem. An estimated .212 barrels / 8.898 gallons / 19.210 pounds of ethylene was released to the atmosphere. |
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