Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2022-08-03 — TX
Operator
Exxonmobil Pipeline Company Llc
Cause
Equipment Failure
Commodity
Crude Oil
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$500
Incident datetime
2022-08-03 07:44
Report number
Location
TX
Narrative
Incident summary and consequence: on august 3, 2022, during normal operation, a 1" nipple associated with the valve body thermal relief system, on top of the mov-508, sheared off. The operations supervisor found the leak during an operational round and was able to shut down and isolate the delaware connector pipeline system (dcpl) within minutes. Following isolation, empco engineering calculated the estimated release volume to be 9.3 barrels. The valve body thermal relief system on mov-508 was replaced with stainless-steel tubing that is lighter and less brittle, and bracing was added to reduce fatigue stress from vibration. Prior to restarting the pipeline, empco operations and engineering inspected the pipeline manifold for fittings of similar design and materials. These fittings were replaced. The dcpl pipeline system was restarted at approximately 21:30 on 8/3/22. Cleanup efforts (all on operator controlled property): a vacuum truck was deployed, to remove all free standing oil. Absorbent pads were used to wipe and clean all oil from surrounding piping. All contaminated soil was excavated and placed in roll off bins that were profiled and sent to an approved waste site. Key investigation findings: the valve body thermal relief system on top of mov-508 was the proper material (316 ss) and installed according to design practices. The investigation team identified the primary cause of the equipment failure to be fatigue due to low stress and high cycle vibration of the thermal relief system. Other failure modes were ruled out through lab analysis. Operations and engineering took proactive measures to install additional bracing to minimize vibration fatigue of other dcpl manifold valve body relief systems with small bore piping. Preventing reoccurrence: empco has mitigated failure risk with other small bore piping that is on the dcpl manifold by: -modified connections to create more efficient routing, removing excess weight and reducing vibration -installed bracing on tubing/small bore connections to provide two plane vibration reduction supplemental final updates: - updated the cost totals for the accident. - updated typo errors in the part h narrative per PHMSA email.
Detailed record list
Report Received Date
2022-09-02 00:00:00
Iyear
2022
Report Number
20220201
Supplemental Number
37228
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
Local Datetime
2022-08-03 07:46:00
Time Zone
Central
Daylight Savings Ind
Yes
Location Latitude
31.77302
Location Longitude
-103.1106
Commodity Released Type
Crude Oil
Unintentional Release Bbls
9.3
Recovered Bbls
9.25
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
Incident Identified Datetime
2022-08-03 07:44:00
System Part Involved
Onshore Terminal/tank Farm Equipment And Piping
On Off Shore
Onshore
Status When Identified
Normal Operation, Includes Pauses Between Batches And During Maintenance
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2022-08-03 07:50:00
Restart Datetime
2022-08-03 21:30:00
Communication State Fed Ind
No
On Site Datetime
2022-08-03 07:44:00
Confirmed Discovery Datetime
2022-08-03 07:46:00
Nrc Rpt Datetime
2022-08-03 08:43:00
Nrc Rpt Num
1343401
Additional Nrc Report Numbers
48 Hr. Update Report #1343578
Ignite Ind
No
Notify Qualified Indiv Ind
Yes
Qualified Indiv Notif Datetime
2022-08-03 07:44:00
Oil Spill Removal Org Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Wink Terminal
Segment Name
Delaware Connector Pl Manifold (Tx-232)
Onshore State Abbreviation
Tx
Onshore Postal Code
79789
Onshore City Name
Wink
Onshore County Name
Winkler
Designated Location
Milepost
Designated Name
65.7
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
Tubing
Tubing Material
Stainless Steel
Tubing Type
Rigid
Installation Year
2020
Manufactured Year
Unknown
Material Involved
Material Other Than Carbon Steel
Material Details
Stainless Steel
Release Type
Leak
Leak Type
Crack
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
No
Commodity Reached Hca
No
Est Cost Oper Paid
0
Est Cost Gas Released
850
Est Cost Prop Damage
500
Est Cost Emergency
281000
Est Cost Environmental
169000
Est Cost Other
101000
Est Cost Other Details
Slurry Backfill & Liner Under Manifold, Fittings On Other Valves
Prpty
552350
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Accident Psig
9
Mop Psig
285
Mop Cfr Section
Component Design Pressure �195.406(A)(2)
Maop Established Date
2020-05-11 00:00:00
Maop Reversal Flow Ind
No
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
Controller actions were not the cause of the incident.
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
Pipe Nipple
Additional Vibration Ind
Yes
Preparer Name
R***** P S**********
Preparer Title
Pipeline Safety Advisor
Preparer Email
R*******************@e*********.com
Preparer Telephone
832-625-3838
Prepared Date
2022-10-14 00:00:00
Local Contact Name
J**** S******
Local Contact Email
J************@e*********.com
Local Contact Telephone
903-879-0794
Authorizer Name
T****** B*****
Authorizer Telephone
832-624-7775
Authorizer Title
Regulatory Compliance Supervisor
Authorizer Email
T***************@e*********.com
Narrative
Incident summary and consequence: on august 3, 2022, during normal operation, a 1" nipple associated with the valve body thermal relief system, on top of the mov-508, sheared off. The operations supervisor found the leak during an operational round and was able to shut down and isolate the delaware connector pipeline system (dcpl) within minutes. Following isolation, empco engineering calculated the estimated release volume to be 9.3 barrels. The valve body thermal relief system on mov-508 was replaced with stainless-steel tubing that is lighter and less brittle, and bracing was added to reduce fatigue stress from vibration. Prior to restarting the pipeline, empco operations and engineering inspected the pipeline manifold for fittings of similar design and materials. These fittings were replaced. The dcpl pipeline system was restarted at approximately 21:30 on 8/3/22. Cleanup efforts (all on operator controlled property): a vacuum truck was deployed, to remove all free standing oil. Absorbent pads were used to wipe and clean all oil from surrounding piping. All contaminated soil was excavated and placed in roll off bins that were profiled and sent to an approved waste site. Key investigation findings: the valve body thermal relief system on top of mov-508 was the proper material (316 ss) and installed according to design practices. The investigation team identified the primary cause of the equipment failure to be fatigue due to low stress and high cycle vibration of the thermal relief system. Other failure modes were ruled out through lab analysis. Operations and engineering took proactive measures to install additional bracing to minimize vibration fatigue of other dcpl manifold valve body relief systems with small bore piping. Preventing reoccurrence: empco has mitigated failure risk with other small bore piping that is on the dcpl manifold by: -modified connections to create more efficient routing, removing excess weight and reducing vibration -installed bracing on tubing/small bore connections to provide two plane vibration reduction supplemental final updates: - updated the cost totals for the accident. - updated typo errors in the part h narrative per PHMSA email.
| Report Received Date | 2022-09-02 00:00:00 |
|---|---|
| Iyear | 2022 |
| Report Number | 20220201 |
| Supplemental Number | 37228 |
| 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 |
| Local Datetime | 2022-08-03 07:46:00 |
| Time Zone | Central |
| Daylight Savings Ind | Yes |
| Location Latitude | 31.77302 Google Maps OpenStreetMap |
| Location Longitude | -103.1106 Google Maps OpenStreetMap |
| Commodity Released Type | Crude Oil |
| Unintentional Release Bbls | 9.3 |
| Recovered Bbls | 9.25 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| Incident Identified Datetime | 2022-08-03 07:44:00 |
| System Part Involved | Onshore Terminal/tank Farm Equipment And Piping |
| On Off Shore | Onshore |
| Status When Identified | Normal Operation, Includes Pauses Between Batches And During Maintenance |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2022-08-03 07:50:00 |
| Restart Datetime | 2022-08-03 21:30:00 |
| Communication State Fed Ind | No |
| On Site Datetime | 2022-08-03 07:44:00 |
| Confirmed Discovery Datetime | 2022-08-03 07:46:00 |
| Nrc Rpt Datetime | 2022-08-03 08:43:00 |
| Nrc Rpt Num | 1343401 NRC Report How to search |
| Additional Nrc Report Numbers | 48 Hr. Update Report #1343578 |
| Ignite Ind | No |
| Notify Qualified Indiv Ind | Yes |
| Qualified Indiv Notif Datetime | 2022-08-03 07:44:00 |
| Oil Spill Removal Org Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Wink Terminal |
| Segment Name | Delaware Connector Pl Manifold (Tx-232) |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 79789 |
| Onshore City Name | Wink |
| Onshore County Name | Winkler |
| Designated Location | Milepost |
| Designated Name | 65.7 |
| 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 | Tubing |
| Tubing Material | Stainless Steel |
| Tubing Type | Rigid |
| Installation Year | 2020 |
| Manufactured Year | Unknown |
| Material Involved | Material Other Than Carbon Steel |
| Material Details | Stainless Steel |
| Release Type | Leak |
| Leak Type | Crack |
| 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 | No |
| Commodity Reached Hca | No |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 850 |
| Est Cost Prop Damage | 500 |
| Est Cost Emergency | 281000 |
| Est Cost Environmental | 169000 |
| Est Cost Other | 101000 |
| Est Cost Other Details | Slurry Backfill & Liner Under Manifold, Fittings On Other Valves |
| Prpty | 552350 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Accident Psig | 9 |
| Mop Psig | 285 |
| Mop Cfr Section | Component Design Pressure �195.406(A)(2) View CFR 49 §192 |
| Maop Established Date | 2020-05-11 00:00:00 |
| Maop Reversal Flow Ind | No |
| 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 | Controller actions were not the cause of the incident. |
| 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 | Pipe Nipple |
| Additional Vibration Ind | Yes |
| Preparer Name | R***** P S********** |
| Preparer Title | Pipeline Safety Advisor |
| Preparer Email | R*******************@e*********.com |
| Preparer Telephone | 832-625-3838 |
| Prepared Date | 2022-10-14 00:00:00 |
| Local Contact Name | J**** S****** |
| Local Contact Email | J************@e*********.com |
| Local Contact Telephone | 903-879-0794 |
| Authorizer Name | T****** B***** |
| Authorizer Telephone | 832-624-7775 |
| Authorizer Title | Regulatory Compliance Supervisor |
| Authorizer Email | T***************@e*********.com |
| Narrative | Incident summary and consequence: on august 3, 2022, during normal operation, a 1" nipple associated with the valve body thermal relief system, on top of the mov-508, sheared off. The operations supervisor found the leak during an operational round and was able to shut down and isolate the delaware connector pipeline system (dcpl) within minutes. Following isolation, empco engineering calculated the estimated release volume to be 9.3 barrels. The valve body thermal relief system on mov-508 was replaced with stainless-steel tubing that is lighter and less brittle, and bracing was added to reduce fatigue stress from vibration. Prior to restarting the pipeline, empco operations and engineering inspected the pipeline manifold for fittings of similar design and materials. These fittings were replaced. The dcpl pipeline system was restarted at approximately 21:30 on 8/3/22. Cleanup efforts (all on operator controlled property): a vacuum truck was deployed, to remove all free standing oil. Absorbent pads were used to wipe and clean all oil from surrounding piping. All contaminated soil was excavated and placed in roll off bins that were profiled and sent to an approved waste site. Key investigation findings: the valve body thermal relief system on top of mov-508 was the proper material (316 ss) and installed according to design practices. The investigation team identified the primary cause of the equipment failure to be fatigue due to low stress and high cycle vibration of the thermal relief system. Other failure modes were ruled out through lab analysis. Operations and engineering took proactive measures to install additional bracing to minimize vibration fatigue of other dcpl manifold valve body relief systems with small bore piping. Preventing reoccurrence: empco has mitigated failure risk with other small bore piping that is on the dcpl manifold by: -modified connections to create more efficient routing, removing excess weight and reducing vibration -installed bracing on tubing/small bore connections to provide two plane vibration reduction supplemental final updates: - updated the cost totals for the accident. - updated typo errors in the part h narrative per PHMSA email. |
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