Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2018-06-20 — TX
Operator
Exxonmobil Pipeline Co
Cause
Equipment Failure
Commodity
Refined And/or Petroleum Product (Non-Hvl) Which Is A Liquid At Ambient Conditions
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$1,500
Incident datetime
2018-06-20 01:23
Report number
Location
TX
Narrative
At 1:23 a.M., exxonmobil pipeline company (empco) operations control center (occ) received a call from exxonmobil baytown refinery regarding a smell of gasoline in the area near baytown products 1 station. Immediately thereafter, occ shutdown the potentially affected pipeline segment and notified field operations. Upon development of safety plan, technician entered site at 2:00 a.M. To investigate. At 4:00 a.M., the technician noticed that the trunnion bolts on the very bottom of the valve had backed out from the valve body. Due to close the proximity of the valve to the ground surface, the bolts were not readily apparent. The release was reported to national response center at 4:26 a.M. And railroad commission of texas at 4:36 a.M. The site was then isolated, and spill clean-up was completed. Post-incident analysis indicates that the trunnion bolts were mis-sized (at least 1/4" too short) at the time of the 2014 valve rebuild by the third-party manufacturer/vendor. Following the incident, an experienced contractor and field engineer reviewed the valve specs and reinstalled the equipment to proper specs using more appropriately-sized bolts. Based upon the valve design and mechanics, the release appears to have occurred only during an approximate 4-second period while the valve was in transit and was calculated to be approximately 2.5 barrels. In terms of preventive measures in the future, field operations has informed the vendor/manufacturer of the incident and to revise specs to have the correct size trunnion bolts. In addition, field operation will be assessing similar 4-way valves. [9/19/2018- brian pierzina, sr. Accident investigator, advised to revise the time of the incident from 4:00 a.M. To 1:23 a.M. And type of leak (part c) from "other" to "seal or packing."]
Detailed record list
Report Received Date
2018-07-19 00:00:00
Iyear
2018
Report Number
20180205
Supplemental Number
31079
Report Type
Supplemental 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
2018-06-20 01:23:00
Location Latitude
29.75738
Location Longitude
-94.99958
Commodity Released Type
Refined And/or Petroleum Product (Non-Hvl) Which Is A Liquid At Ambient Conditions
Commodity Subtype
Gasoline (Non-Ethanol)
Unintentional Release Bbls
2.5
Recovered Bbls
2.5
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Other
Accident Details
Adjacent Affiliate Operator Notified Empco Occ Of Gasoline Odor
Incident Identified Datetime
2018-06-20 01:23:00
System Part Involved
Onshore Pump/meter Station Equipment And Piping
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2018-06-20 01:23:00
Restart Datetime
2018-06-20 17:21:00
On Site Datetime
2018-06-20 02:00:00
Nrc Rpt Datetime
2018-06-20 04:26:00
Nrc Rpt Num
1215833
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Baytown Products 1 Pump Station
Segment Name
Bipl
Onshore State Abbreviation
Tx
Onshore Postal Code
77520
Onshore City Name
Baytown
Onshore County Name
Harris
Designated Location
Milepost/valve Station
Designated Name
Bt Prod 1
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
2014
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Seal Or Packing
Wildlife Impact Ind
No
Soil Contamination
Yes
Long Term Assessment
No
Remediation Ind
Yes
Soil Remed Ind
Yes
Water Contam Ind
No
Could Be Hca
Yes
Commodity Reached Hca
Yes
High Pop Ind
Yes
High Pop Yes No
Yes
Usa Drinking Ind
Yes
Usa Drinking Yes No
Yes
Est Cost Oper Paid
0
Est Cost Gas Released
300
Est Cost Prop Damage
1500
Est Cost Emergency
0
Est Cost Environmental
12000
Est Cost Other
11190
Est Cost Other Details
Labor For Recovery And Equipment Repair
Prpty
24990
Accident Psig
144.6
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
No
Scada Conf Ind
No
Cpm In Place 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
The 4-way prover valve where the incident occurred is not monitored by occ.
Employee Drug Test Ind
Yes
Contractor Drug Test Ind
No
Num Employees Tested
1
Num Employees Failed
0
Cause
Equipment Failure
Cause Details
Threaded Connection/coupling Failure
Eq Failure Type
Threaded Connection/coupling Failure
Other Stripped Ind
Other
Other Stripped Details
Trunnion Bolts On The Bottom Of The 4-Way Valve Backed Out.
Additional Installation Ind
Yes
Preparer Name
D**** S*****
Preparer Title
Pipeline Safety Advisor
Preparer Email
D*************@e*********.com
Preparer Telephone
832-624-7531
Prepared Date
2018-10-16 00:00:00
Authorizer Name
C******* H********
Authorizer Telephone
832-624-7920
Authorizer Title
Exxonmobil Pipeline Company Sshe Manager
Authorizer Email
C*******************@e*********.com
Narrative
At 1:23 a.M., exxonmobil pipeline company (empco) operations control center (occ) received a call from exxonmobil baytown refinery regarding a smell of gasoline in the area near baytown products 1 station. Immediately thereafter, occ shutdown the potentially affected pipeline segment and notified field operations. Upon development of safety plan, technician entered site at 2:00 a.M. To investigate. At 4:00 a.M., the technician noticed that the trunnion bolts on the very bottom of the valve had backed out from the valve body. Due to close the proximity of the valve to the ground surface, the bolts were not readily apparent. The release was reported to national response center at 4:26 a.M. And railroad commission of texas at 4:36 a.M. The site was then isolated, and spill clean-up was completed. Post-incident analysis indicates that the trunnion bolts were mis-sized (at least 1/4" too short) at the time of the 2014 valve rebuild by the third-party manufacturer/vendor. Following the incident, an experienced contractor and field engineer reviewed the valve specs and reinstalled the equipment to proper specs using more appropriately-sized bolts. Based upon the valve design and mechanics, the release appears to have occurred only during an approximate 4-second period while the valve was in transit and was calculated to be approximately 2.5 barrels. In terms of preventive measures in the future, field operations has informed the vendor/manufacturer of the incident and to revise specs to have the correct size trunnion bolts. In addition, field operation will be assessing similar 4-way valves. [9/19/2018- brian pierzina, sr. Accident investigator, advised to revise the time of the incident from 4:00 a.M. To 1:23 a.M. And type of leak (part c) from "other" to "seal or packing."]
| Report Received Date | 2018-07-19 00:00:00 |
|---|---|
| Iyear | 2018 |
| Report Number | 20180205 |
| Supplemental Number | 31079 |
| Report Type | Supplemental 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 | 2018-06-20 01:23:00 |
| Location Latitude | 29.75738 Google Maps OpenStreetMap |
| Location Longitude | -94.99958 Google Maps OpenStreetMap |
| Commodity Released Type | Refined And/or Petroleum Product (Non-Hvl) Which Is A Liquid At Ambient Conditions |
| Commodity Subtype | Gasoline (Non-Ethanol) |
| Unintentional Release Bbls | 2.5 |
| Recovered Bbls | 2.5 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Other |
| Accident Details | Adjacent Affiliate Operator Notified Empco Occ Of Gasoline Odor |
| Incident Identified Datetime | 2018-06-20 01:23:00 |
| System Part Involved | Onshore Pump/meter Station Equipment And Piping |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2018-06-20 01:23:00 |
| Restart Datetime | 2018-06-20 17:21:00 |
| On Site Datetime | 2018-06-20 02:00:00 |
| Nrc Rpt Datetime | 2018-06-20 04:26:00 |
| Nrc Rpt Num | 1215833 NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Baytown Products 1 Pump Station |
| Segment Name | Bipl |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 77520 |
| Onshore City Name | Baytown |
| Onshore County Name | Harris |
| Designated Location | Milepost/valve Station |
| Designated Name | Bt Prod 1 |
| 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 | 2014 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Seal Or Packing |
| Wildlife Impact Ind | No |
| Soil Contamination | Yes |
| Long Term Assessment | No |
| Remediation Ind | Yes |
| Soil Remed Ind | Yes |
| Water Contam Ind | No |
| Could Be Hca | Yes |
| Commodity Reached Hca | Yes |
| High Pop Ind | Yes |
| High Pop Yes No | Yes |
| Usa Drinking Ind | Yes |
| Usa Drinking Yes No | Yes |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 300 |
| Est Cost Prop Damage | 1500 |
| Est Cost Emergency | 0 |
| Est Cost Environmental | 12000 |
| Est Cost Other | 11190 |
| Est Cost Other Details | Labor For Recovery And Equipment Repair |
| Prpty | 24990 |
| Accident Psig | 144.6 |
| 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 | No |
| Scada Conf Ind | No |
| Cpm In Place 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 | The 4-way prover valve where the incident occurred is not monitored by occ. |
| Employee Drug Test Ind | Yes |
| Contractor Drug Test Ind | No |
| Num Employees Tested | 1 |
| Num Employees Failed | 0 |
| Cause | Equipment Failure |
| Cause Details | Threaded Connection/coupling Failure |
| Eq Failure Type | Threaded Connection/coupling Failure |
| Other Stripped Ind | Other |
| Other Stripped Details | Trunnion Bolts On The Bottom Of The 4-Way Valve Backed Out. |
| Additional Installation Ind | Yes |
| Preparer Name | D**** S***** |
| Preparer Title | Pipeline Safety Advisor |
| Preparer Email | D*************@e*********.com |
| Preparer Telephone | 832-624-7531 |
| Prepared Date | 2018-10-16 00:00:00 |
| Authorizer Name | C******* H******** |
| Authorizer Telephone | 832-624-7920 |
| Authorizer Title | Exxonmobil Pipeline Company Sshe Manager |
| Authorizer Email | C*******************@e*********.com |
| Narrative | At 1:23 a.M., exxonmobil pipeline company (empco) operations control center (occ) received a call from exxonmobil baytown refinery regarding a smell of gasoline in the area near baytown products 1 station. Immediately thereafter, occ shutdown the potentially affected pipeline segment and notified field operations. Upon development of safety plan, technician entered site at 2:00 a.M. To investigate. At 4:00 a.M., the technician noticed that the trunnion bolts on the very bottom of the valve had backed out from the valve body. Due to close the proximity of the valve to the ground surface, the bolts were not readily apparent. The release was reported to national response center at 4:26 a.M. And railroad commission of texas at 4:36 a.M. The site was then isolated, and spill clean-up was completed. Post-incident analysis indicates that the trunnion bolts were mis-sized (at least 1/4" too short) at the time of the 2014 valve rebuild by the third-party manufacturer/vendor. Following the incident, an experienced contractor and field engineer reviewed the valve specs and reinstalled the equipment to proper specs using more appropriately-sized bolts. Based upon the valve design and mechanics, the release appears to have occurred only during an approximate 4-second period while the valve was in transit and was calculated to be approximately 2.5 barrels. In terms of preventive measures in the future, field operations has informed the vendor/manufacturer of the incident and to revise specs to have the correct size trunnion bolts. In addition, field operation will be assessing similar 4-way valves. [9/19/2018- brian pierzina, sr. Accident investigator, advised to revise the time of the incident from 4:00 a.M. To 1:23 a.M. And type of leak (part c) from "other" to "seal or packing."] |
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