Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2019-10-22 — 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)
$6,400
Incident datetime
2019-10-22 03:50
Report number
Location
OK
Narrative
On 10/22/19 at 3:50 am, plant operators identified vapor leaking from a 3/4" threaded nipple on sterling 2 pump header. Pump header isolated and product removed. Oneok replaced failed 3/4" nipple and associated ball valve. Pipeline was returned to service. Oneok determined pipe nipple failed due to high cycle fatigue (vibration) caused by the pipeline control valve. Oneok conducted vibration study after installation of new pipeline control valve and vibration was reduced to an acceptable level. Additionally, oneok replaced all similar threaded nipples on the sterling 2 pipeline header system.
Detailed record list
Report Received Date
2019-11-21 00:00:00
Iyear
2019
Report Number
20190348
Supplemental Number
33285
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
2019-10-22 03:50:00
Location Latitude
36.77402
Location Longitude
-97.75716
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
8
Intentional Release Bbls
20
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
2019-10-22 03:50:00
System Part Involved
Onshore Pump/meter Station Equipment And Piping
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2019-10-22 04:22:00
Restart Datetime
2019-10-22 12:56:00
On Site Datetime
2019-10-22 03:50:00
Nrc Rpt Num
Nrc Notification Not Required
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Medford Sterling 2 Pump Station
Segment Name
Medford Sterling 2 Pipeline (Oneok Index #10182)
Onshore State Abbreviation
Ok
Onshore Postal Code
73759
Onshore City Name
Not Within A Municipality
Onshore County Name
Grant
Designated Location
Milepost/valve Station
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
Other
Item Involved Details
Threaded Nipple
Installation Year
2019
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Crack
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
No
Est Cost Oper Paid
0
Est Cost Gas Released
134
Est Cost Prop Damage
6400
Est Cost Emergency
500
Est Cost Environmental
0
Est Cost Other
0
Prpty
7034
Accident Psig
1300
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
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
No controller actions had taken place prior to the release.
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
Eq Additional Other Ind
Yes
Eq Additional Other Details
Pipeline Control Valve Causing Vibration
Preparer Name
P**** G**** R****
Preparer Title
Regulatory Compliance Coordinator
Preparer Email
P***************@o****.com
Preparer Telephone
5803956238
Prepared Date
2020-02-05 00:00:00
Authorizer Name
W***** A****
Authorizer Telephone
918-591-5081
Authorizer Title
Vp Ngl Pipelines And Terminials
Authorizer Email
W***********@o****.com
Narrative
On 10/22/19 at 3:50 am, plant operators identified vapor leaking from a 3/4" threaded nipple on sterling 2 pump header. Pump header isolated and product removed. Oneok replaced failed 3/4" nipple and associated ball valve. Pipeline was returned to service. Oneok determined pipe nipple failed due to high cycle fatigue (vibration) caused by the pipeline control valve. Oneok conducted vibration study after installation of new pipeline control valve and vibration was reduced to an acceptable level. Additionally, oneok replaced all similar threaded nipples on the sterling 2 pipeline header system.
| Report Received Date | 2019-11-21 00:00:00 |
|---|---|
| Iyear | 2019 |
| Report Number | 20190348 |
| Supplemental Number | 33285 |
| 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 | 2019-10-22 03:50:00 |
| Location Latitude | 36.77402 Google Maps OpenStreetMap |
| Location Longitude | -97.75716 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 | 8 |
| Intentional Release Bbls | 20 |
| 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 | 2019-10-22 03:50:00 |
| System Part Involved | Onshore Pump/meter Station Equipment And Piping |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2019-10-22 04:22:00 |
| Restart Datetime | 2019-10-22 12:56:00 |
| On Site Datetime | 2019-10-22 03:50:00 |
| 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 | Medford Sterling 2 Pump Station |
| Segment Name | Medford Sterling 2 Pipeline (Oneok Index #10182) |
| Onshore State Abbreviation | Ok |
| Onshore Postal Code | 73759 |
| Onshore City Name | Not Within A Municipality |
| Onshore County Name | Grant |
| Designated Location | Milepost/valve Station |
| 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 | Other |
| Item Involved Details | Threaded Nipple |
| Installation Year | 2019 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Crack |
| 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 | No |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 134 |
| Est Cost Prop Damage | 6400 |
| Est Cost Emergency | 500 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 7034 |
| Accident Psig | 1300 |
| 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 | 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 | No controller actions had taken place prior to the release. |
| 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 |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | Pipeline Control Valve Causing Vibration |
| Preparer Name | P**** G**** R**** |
| Preparer Title | Regulatory Compliance Coordinator |
| Preparer Email | P***************@o****.com |
| Preparer Telephone | 5803956238 |
| Prepared Date | 2020-02-05 00:00:00 |
| Authorizer Name | W***** A**** |
| Authorizer Telephone | 918-591-5081 |
| Authorizer Title | Vp Ngl Pipelines And Terminials |
| Authorizer Email | W***********@o****.com |
| Narrative | On 10/22/19 at 3:50 am, plant operators identified vapor leaking from a 3/4" threaded nipple on sterling 2 pump header. Pump header isolated and product removed. Oneok replaced failed 3/4" nipple and associated ball valve. Pipeline was returned to service. Oneok determined pipe nipple failed due to high cycle fatigue (vibration) caused by the pipeline control valve. Oneok conducted vibration study after installation of new pipeline control valve and vibration was reduced to an acceptable level. Additionally, oneok replaced all similar threaded nipples on the sterling 2 pipeline header system. |
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