Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2024-08-29 — TX
Operator
Exxonmobil Pipeline Company Llc
Cause
Equipment Failure
Commodity
Crude Oil
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$0
Incident datetime
2024-08-29 00:00 UTC
Report number
Location
TX
Narrative
The trap door was replaced with a newly designed enclosure on august 28th, 2024, and the trap was recommissioned on september 19th, 2024. Updates made to this report: -updated total costs -updated this narrative above incident summary: on tuesday, july 30, 2024, a crew arrived onsite to remove a cleaning pig from the scraper trap door at the texas city scraper trap site. (in accordance with a 3rd party lease agreement). The crew completed loto/drain-up, opened the trap door, installed a new o-ring per procedures, and closed the trap door. The line was restarted on july 31st per schedule and a third-party operator identified that the trap door, which is located within a third-party facility, was leaking. The line was immediately shutdown after identification. The release was contained all onsite and cleaned up. Root cause: the scraper trap door pinched/stressed the o-ring at the 12 o'clock position causing failure of the seal and release of crude oil. Contributing factors: o-ring position on threads increases likelihood of damage during door closure. Preventing re-occurrence: the scraper trap door was replaced on august 28th, 2024, with a new trap door that will reduce the likelihood of a pinched o-ring during closure.
Detailed record list
Report Received Date
2024-08-29 00:00:00
Iyear
2024
Report Number
20240205
Supplemental Number
40208
Report Type
Supplemental Final
Operator Id
4906
Name
Exxonmobil Pipeline Company Llc
Operator Street Address
22777 Springwoods Village Parkway E2.2b-Emp
Operator City Name
Spring
Operator State Abbreviation
TX
Operator Postal Code
77389
Time Zone
Central
Daylight Savings Ind
Yes
Location Latitude
29.34896
Location Longitude
-94.93969
Commodity Released Type
Crude Oil
Unintentional Release Bbls
16.24
Recovered Bbls
16.24
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Other
Accident Details
Third Party That Was Onsite
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Status When Identified
Normal Operation, Includes Pauses Between Batches And During Maintenance
Shutdown Due Accident Ind
Yes
Communication State Fed Ind
Yes
Party Initiated Communication
Operator
Nrc Rpt Num
1406481
Additional Nrc Report Numbers
1406979
Ignite Ind
No
Upstream Action Taken
Valve Closure
Upstream Valve Type Ind
Remotely Controlled
Downstream Action Taken
Valve Closure
Downstream Valve Type Ind
Remotely Controlled
Notify Qualified Indiv Ind
Yes
Oil Spill Removal Org Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Texas City Tx-226b Receipt Trap
Segment Name
Tx-226b
Onshore State Abbreviation
Tx
Onshore Postal Code
77590
Onshore City Name
Texas City
Onshore County Name
Galveston
Designated Location
Survey Station No.
Designated Name
2403+04
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
Scraper/pig Trap
Installation Year
Unknown
Manufactured Year
Unknown
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
Other Pop Ind
Yes
Other Pop Yes No
No
Est Cost Oper Paid
0
Est Cost Gas Released
1500
Est Cost Prop Damage
0
Est Cost Emergency
251467
Est Cost Environmental
26533
Est Cost Other
0
Prpty
279500
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Accident Psig
80
Mop Psig
720
Mop Cfr Section
Subpart E Pressure Test �195.406(A)(3)
Maop Established Date
1987-05-07 00:00:00
Maop Reversal Flow Ind
No
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
50
Internal Inspection Ind
Yes
Operation Complications 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
Occ did not receive any indications of a leak and followed shutdown procedures appropriately once notified by 3rd party.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Threaded Connection/coupling Failure
Eq Failure Type
Threaded Connection/coupling Failure
Other Stripped Ind
Other
Other Stripped Details
O-Ring Failure On Threaded Scraper Trap Door/enclosure
Eq Additional Other Ind
Yes
Eq Additional Other Details
Pinched/nicked By Trap Door During Closure Due To Poor Design Of Threaded Door
Pwf Design Ind
Yes
Preparer Name
R***** P S**********
Preparer Title
Dot Pipeline Safety Advisor
Preparer Email
R*******************@e*********.com
Preparer Telephone
618-267-9641
Prepared Date
2024-11-11 00:00:00
Authorizer Name
L**** E B******
Authorizer Telephone
281-382-6003
Authorizer Title
Regulatory Compliance Supervisor
Authorizer Email
L**************@e*********.com
Narrative
The trap door was replaced with a newly designed enclosure on august 28th, 2024, and the trap was recommissioned on september 19th, 2024. Updates made to this report: -updated total costs -updated this narrative above incident summary: on tuesday, july 30, 2024, a crew arrived onsite to remove a cleaning pig from the scraper trap door at the texas city scraper trap site. (in accordance with a 3rd party lease agreement). The crew completed loto/drain-up, opened the trap door, installed a new o-ring per procedures, and closed the trap door. The line was restarted on july 31st per schedule and a third-party operator identified that the trap door, which is located within a third-party facility, was leaking. The line was immediately shutdown after identification. The release was contained all onsite and cleaned up. Root cause: the scraper trap door pinched/stressed the o-ring at the 12 o'clock position causing failure of the seal and release of crude oil. Contributing factors: o-ring position on threads increases likelihood of damage during door closure. Preventing re-occurrence: the scraper trap door was replaced on august 28th, 2024, with a new trap door that will reduce the likelihood of a pinched o-ring during closure.
| Report Received Date | 2024-08-29 00:00:00 |
|---|---|
| Iyear | 2024 |
| Report Number | 20240205 |
| Supplemental Number | 40208 |
| Report Type | Supplemental Final |
| Operator Id | 4906 PHMSA Enforcement |
| Name | Exxonmobil Pipeline Company Llc |
| Operator Street Address | 22777 Springwoods Village Parkway E2.2b-Emp |
| Operator City Name | Spring |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77389 |
| Time Zone | Central |
| Daylight Savings Ind | Yes |
| Location Latitude | 29.34896 Google Maps OpenStreetMap |
| Location Longitude | -94.93969 Google Maps OpenStreetMap |
| Commodity Released Type | Crude Oil |
| Unintentional Release Bbls | 16.24 |
| Recovered Bbls | 16.24 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Other |
| Accident Details | Third Party That Was Onsite |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Status When Identified | Normal Operation, Includes Pauses Between Batches And During Maintenance |
| Shutdown Due Accident Ind | Yes |
| Communication State Fed Ind | Yes |
| Party Initiated Communication | Operator |
| Nrc Rpt Num | 1406481 NRC Report How to search |
| Additional Nrc Report Numbers | 1406979 |
| Ignite Ind | No |
| Upstream Action Taken | Valve Closure |
| Upstream Valve Type Ind | Remotely Controlled |
| Downstream Action Taken | Valve Closure |
| Downstream Valve Type Ind | Remotely Controlled |
| Notify Qualified Indiv Ind | Yes |
| Oil Spill Removal Org Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Texas City Tx-226b Receipt Trap |
| Segment Name | Tx-226b |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 77590 |
| Onshore City Name | Texas City |
| Onshore County Name | Galveston |
| Designated Location | Survey Station No. |
| Designated Name | 2403+04 |
| 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 | Scraper/pig Trap |
| Installation Year | Unknown |
| Manufactured Year | Unknown |
| 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 |
| Other Pop Ind | Yes |
| Other Pop Yes No | No |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 1500 |
| Est Cost Prop Damage | 0 |
| Est Cost Emergency | 251467 |
| Est Cost Environmental | 26533 |
| Est Cost Other | 0 |
| Prpty | 279500 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Accident Psig | 80 |
| Mop Psig | 720 |
| Mop Cfr Section | Subpart E Pressure Test �195.406(A)(3) View CFR 49 §192 |
| Maop Established Date | 1987-05-07 00:00:00 |
| Maop Reversal Flow Ind | No |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 50 |
| Internal Inspection Ind | Yes |
| Operation Complications 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 | Occ did not receive any indications of a leak and followed shutdown procedures appropriately once notified by 3rd party. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Threaded Connection/coupling Failure |
| Eq Failure Type | Threaded Connection/coupling Failure |
| Other Stripped Ind | Other |
| Other Stripped Details | O-Ring Failure On Threaded Scraper Trap Door/enclosure |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | Pinched/nicked By Trap Door During Closure Due To Poor Design Of Threaded Door |
| Pwf Design Ind | Yes |
| Preparer Name | R***** P S********** |
| Preparer Title | Dot Pipeline Safety Advisor |
| Preparer Email | R*******************@e*********.com |
| Preparer Telephone | 618-267-9641 |
| Prepared Date | 2024-11-11 00:00:00 |
| Authorizer Name | L**** E B****** |
| Authorizer Telephone | 281-382-6003 |
| Authorizer Title | Regulatory Compliance Supervisor |
| Authorizer Email | L**************@e*********.com |
| Narrative | The trap door was replaced with a newly designed enclosure on august 28th, 2024, and the trap was recommissioned on september 19th, 2024. Updates made to this report: -updated total costs -updated this narrative above incident summary: on tuesday, july 30, 2024, a crew arrived onsite to remove a cleaning pig from the scraper trap door at the texas city scraper trap site. (in accordance with a 3rd party lease agreement). The crew completed loto/drain-up, opened the trap door, installed a new o-ring per procedures, and closed the trap door. The line was restarted on july 31st per schedule and a third-party operator identified that the trap door, which is located within a third-party facility, was leaking. The line was immediately shutdown after identification. The release was contained all onsite and cleaned up. Root cause: the scraper trap door pinched/stressed the o-ring at the 12 o'clock position causing failure of the seal and release of crude oil. Contributing factors: o-ring position on threads increases likelihood of damage during door closure. Preventing re-occurrence: the scraper trap door was replaced on august 28th, 2024, with a new trap door that will reduce the likelihood of a pinched o-ring during closure. |
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