Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2022-08-15 — OK
Operator
Oneok Ngl Pipeline, 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)
$1,200
Incident datetime
2022-08-15 16:42
Report number
Location
OK
Narrative
At approximately 4:42 pm on 8/15/2022, a oneok ombs operator identified vapors from the door of sterling 3 filter vessel 204. The operator immediately notified pipeline control, and the sterling 3 trap valves were closed to isolate the system. The sterling 3 filter vessel inlet valve was closed to further isolate the filter vessel, and hydrocarbons were removed. An operator identified the vessel door gasket as the source of the vapors. The operator removed and replaced the filter vessel door gasket and the filter vessel was returned to service. The failed gasket has been sent for material analysis to identify the contributing factors of the failure. A supplemental report will be submitted pending the material analysis and oneok completing its investigation. Supplemental update 11/3/2022 failure analysis of the o-ring/gasket identified that the cause of failure was due to high velocity mechanical shear fracture in a direction parallel to the vessel radius. Deformation and stretching of the polymer lateral and in-plane occurred over the entire break surface, and the metallic helical spring had also failed due to rapid shear overload. Polymer material characteristics, such as compounds present, glass transition temperature, and durometer hardness confirmed that fundamental material properties of the failed o-ring did not contribute to the cause or mechanism of o-ring failure. As a result of the failure analysis report and oneoks causemap investigation, the following mitigation steps have been taken to prevent future re-occurrence of o-ring/gasket failure. 1. Onsite training with the manufacture of the filter door occurred on august 31, 2022 to ensure oneok is completing proper installation of the o-ring/gasket during a filter change. 2. A work order will be created after each filter change at this location to check the filter door for leaks.
Detailed record list
Report Received Date
2022-09-13 00:00:00
Iyear
2022
Report Number
20220212
Supplemental Number
37315
Report Type
Supplemental Final
Operator Id
32109
Name
Oneok Ngl Pipeline, Llc
Operator Street Address
100 West Fifth Street
Operator City Name
Tulsa
Operator State Abbreviation
OK
Operator Postal Code
74103
Local Datetime
2022-08-15 16:27:00
Time Zone
Central
Daylight Savings Ind
Yes
Location Latitude
29.85382
Location Longitude
-94.89298
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
2.66
Intentional Release Bbls
12
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
2022-08-15 16:42:00
System Part Involved
Onshore Pump/meter Station 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
2022-08-15 16:43:00
Restart Datetime
2022-08-15 19:16:00
Communication State Fed Ind
Yes
Party Initiated Communication
Operator
Initial Responder Com Datetime
2022-08-15 16:43:00
On Site Datetime
2022-08-15 16:42:00
Confirmed Discovery Datetime
2022-08-15 16:42:00
Nrc Rpt Num
Nrc Notification Not Required
Ignite Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Mont Belvieu Pump Station Sterling 3
Segment Name
460
Onshore State Abbreviation
Tx
Onshore Postal Code
77580
Onshore City Name
Mont Belvieu
Onshore County Name
Chambers
Designated Location
Survey Station No.
Designated Name
Pump Station
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
Filter/strainer/separator
Installation Year
2014
Manufactured Year
2013
Material Involved
Material Other Than Carbon Steel
Material Details
Viton Door Gasket
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
Commercially Nav Ind
Yes
Commercially Nav Yes No
Yes
High Pop Ind
Yes
High Pop Yes No
Yes
Other Pop Ind
Yes
Other Pop Yes No
Yes
Usa Drinking Ind
Yes
Usa Drinking Yes No
Yes
Usa Ecological Ind
Yes
Usa Ecological Yes No
Yes
Est Cost Oper Paid
0
Est Cost Gas Released
500
Est Cost Prop Damage
1200
Est Cost Emergency
1000
Est Cost Environmental
0
Est Cost Other
0
Prpty
2700
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Accident Psig
1231
Mop Psig
1440
Mop Cfr Section
Subpart E Pressure Test �195.406(A)(3)
Maop Established Date
2014-05-13 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
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
The accident was due to part/material failure with no other contributing factors.
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
O-Ring
Eq Additional Other Ind
Yes
Eq Additional Other Details
See Supplemental Narrative Part H
Preparer Name
M***** C********
Preparer Title
Regulatory Compliance Specialist
Preparer Email
M***************@o****.com
Preparer Telephone
2542928911
Prepared Date
2022-11-03 00:00:00
Local Contact Name
M***** C********
Local Contact Email
M***************@o****.com
Local Contact Telephone
2542928911
Authorizer Name
M***** C********
Authorizer Telephone
2542928911
Authorizer Title
Regulatory Compliance Specialist
Authorizer Email
M***************@o****.com
Narrative
At approximately 4:42 pm on 8/15/2022, a oneok ombs operator identified vapors from the door of sterling 3 filter vessel 204. The operator immediately notified pipeline control, and the sterling 3 trap valves were closed to isolate the system. The sterling 3 filter vessel inlet valve was closed to further isolate the filter vessel, and hydrocarbons were removed. An operator identified the vessel door gasket as the source of the vapors. The operator removed and replaced the filter vessel door gasket and the filter vessel was returned to service. The failed gasket has been sent for material analysis to identify the contributing factors of the failure. A supplemental report will be submitted pending the material analysis and oneok completing its investigation. Supplemental update 11/3/2022 failure analysis of the o-ring/gasket identified that the cause of failure was due to high velocity mechanical shear fracture in a direction parallel to the vessel radius. Deformation and stretching of the polymer lateral and in-plane occurred over the entire break surface, and the metallic helical spring had also failed due to rapid shear overload. Polymer material characteristics, such as compounds present, glass transition temperature, and durometer hardness confirmed that fundamental material properties of the failed o-ring did not contribute to the cause or mechanism of o-ring failure. As a result of the failure analysis report and oneoks causemap investigation, the following mitigation steps have been taken to prevent future re-occurrence of o-ring/gasket failure. 1. Onsite training with the manufacture of the filter door occurred on august 31, 2022 to ensure oneok is completing proper installation of the o-ring/gasket during a filter change. 2. A work order will be created after each filter change at this location to check the filter door for leaks.
| Report Received Date | 2022-09-13 00:00:00 |
|---|---|
| Iyear | 2022 |
| Report Number | 20220212 |
| Supplemental Number | 37315 |
| Report Type | Supplemental Final |
| Operator Id | 32109 PHMSA Enforcement |
| Name | Oneok Ngl Pipeline, Llc |
| Operator Street Address | 100 West Fifth Street |
| Operator City Name | Tulsa |
| Operator State Abbreviation | OK |
| Operator Postal Code | 74103 |
| Local Datetime | 2022-08-15 16:27:00 |
| Time Zone | Central |
| Daylight Savings Ind | Yes |
| Location Latitude | 29.85382 Google Maps OpenStreetMap |
| Location Longitude | -94.89298 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 | 2.66 |
| Intentional Release Bbls | 12 |
| 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 | 2022-08-15 16:42:00 |
| System Part Involved | Onshore Pump/meter Station 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 | 2022-08-15 16:43:00 |
| Restart Datetime | 2022-08-15 19:16:00 |
| Communication State Fed Ind | Yes |
| Party Initiated Communication | Operator |
| Initial Responder Com Datetime | 2022-08-15 16:43:00 |
| On Site Datetime | 2022-08-15 16:42:00 |
| Confirmed Discovery Datetime | 2022-08-15 16:42:00 |
| Nrc Rpt Num | Nrc Notification Not Required NRC Report How to search |
| Ignite Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Mont Belvieu Pump Station Sterling 3 |
| Segment Name | 460 |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 77580 |
| Onshore City Name | Mont Belvieu |
| Onshore County Name | Chambers |
| Designated Location | Survey Station No. |
| Designated Name | Pump Station |
| 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 | Filter/strainer/separator |
| Installation Year | 2014 |
| Manufactured Year | 2013 |
| Material Involved | Material Other Than Carbon Steel |
| Material Details | Viton Door Gasket |
| 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 |
| Commercially Nav Ind | Yes |
| Commercially Nav Yes No | Yes |
| High Pop Ind | Yes |
| High Pop Yes No | Yes |
| Other Pop Ind | Yes |
| Other Pop Yes No | Yes |
| Usa Drinking Ind | Yes |
| Usa Drinking Yes No | Yes |
| Usa Ecological Ind | Yes |
| Usa Ecological Yes No | Yes |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 500 |
| Est Cost Prop Damage | 1200 |
| Est Cost Emergency | 1000 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 2700 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Accident Psig | 1231 |
| Mop Psig | 1440 |
| Mop Cfr Section | Subpart E Pressure Test �195.406(A)(3) View CFR 49 §192 |
| Maop Established Date | 2014-05-13 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 | 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 | The accident was due to part/material failure with no other contributing factors. |
| 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 | O-Ring |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | See Supplemental Narrative Part H |
| Preparer Name | M***** C******** |
| Preparer Title | Regulatory Compliance Specialist |
| Preparer Email | M***************@o****.com |
| Preparer Telephone | 2542928911 |
| Prepared Date | 2022-11-03 00:00:00 |
| Local Contact Name | M***** C******** |
| Local Contact Email | M***************@o****.com |
| Local Contact Telephone | 2542928911 |
| Authorizer Name | M***** C******** |
| Authorizer Telephone | 2542928911 |
| Authorizer Title | Regulatory Compliance Specialist |
| Authorizer Email | M***************@o****.com |
| Narrative | At approximately 4:42 pm on 8/15/2022, a oneok ombs operator identified vapors from the door of sterling 3 filter vessel 204. The operator immediately notified pipeline control, and the sterling 3 trap valves were closed to isolate the system. The sterling 3 filter vessel inlet valve was closed to further isolate the filter vessel, and hydrocarbons were removed. An operator identified the vessel door gasket as the source of the vapors. The operator removed and replaced the filter vessel door gasket and the filter vessel was returned to service. The failed gasket has been sent for material analysis to identify the contributing factors of the failure. A supplemental report will be submitted pending the material analysis and oneok completing its investigation. Supplemental update 11/3/2022 failure analysis of the o-ring/gasket identified that the cause of failure was due to high velocity mechanical shear fracture in a direction parallel to the vessel radius. Deformation and stretching of the polymer lateral and in-plane occurred over the entire break surface, and the metallic helical spring had also failed due to rapid shear overload. Polymer material characteristics, such as compounds present, glass transition temperature, and durometer hardness confirmed that fundamental material properties of the failed o-ring did not contribute to the cause or mechanism of o-ring failure. As a result of the failure analysis report and oneoks causemap investigation, the following mitigation steps have been taken to prevent future re-occurrence of o-ring/gasket failure. 1. Onsite training with the manufacture of the filter door occurred on august 31, 2022 to ensure oneok is completing proper installation of the o-ring/gasket during a filter change. 2. A work order will be created after each filter change at this location to check the filter door for leaks. |
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