Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2017-05-13 — 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)
$100
Incident datetime
2017-05-13 22:18
Report number
Location
OK
Narrative
At approximately 22:20 on 5/13/2017, oneok tulsa control received a priority 1 station lock out alarm due to gas detect at oneok's enterprise east delivery. Oneok personnel were immediately dispatched to the location. Upon arrival oneok personnel began isolating the leak on the oneok 246a meter and blowing down the meter through the enterprise east flare system. Once product had been removed from the meter, it was determined 3/4" pipe nipple, on the thermal relief line, for the inlet of the meter, had developed a crack and failed, causing the release. Oneok's investigation determined a 3/4" check valve on the thermal piping, had failed in the open position, allowing, high rates of product to flow through the 3/4" piping. Oneok replaced the 3/4" pipe nipple along with the check valve on the thermal piping. Oneok is it the process of replacing check valves located in similar operations, to prevent future failures.
Detailed record list
Report Received Date
2017-06-08 00:00:00
Iyear
2017
Report Number
20170189
Supplemental Number
22396
Report Type
Original 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
2017-05-13 22:18:00
Location Latitude
29.841234
Location Longitude
-94.892437
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
8.45
Intentional Release Bbls
22
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Cpm Leak Detection System Or Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Calculations)
Incident Identified Datetime
2017-05-13 22:18:00
System Part Involved
Onshore Pump/meter Station Equipment And Piping
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2017-05-13 22:18:00
Restart Datetime
2017-05-14 04:20:00
On Site Datetime
2017-05-13 22:26:00
Nrc Rpt Num
Nrc Notification Not Required
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Enterprise East Facility
Segment Name
Enterprise East 246a Meter
Onshore State Abbreviation
Tx
Onshore Postal Code
77580
Onshore City Name
Mont Belvieu
Onshore County Name
Chambers
Designated Location
Survey Station No.
Designated Name
Meter 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
Intrastate
Item Involved
Relief Line And Relief Equipment
Installation Year
2016
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
Yes
Other Pop Ind
Yes
Other Pop Yes No
Yes
Est Cost Oper Paid
0
Est Cost Gas Released
1125
Est Cost Prop Damage
100
Est Cost Emergency
300
Est Cost Environmental
0
Est Cost Other
0
Prpty
1525
Accident Psig
1116
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
Yes
Scada Conf Ind
No
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
High Flow Rate Caused Vibration In Relief Line.
Preparer Name
N*** J****
Preparer Title
Requlatory Compliance Supervisor
Preparer Email
N*********@o****.com
Preparer Telephone
580-395-6304
Preparer Fax
580-395-2933
Prepared Date
2017-06-08 00:00:00
Authorizer Name
N*** J****
Authorizer Telephone
580-395-6304
Authorizer Title
Regulatory Compliance Supervisor
Authorizer Email
N*********@o****.com
Narrative
At approximately 22:20 on 5/13/2017, oneok tulsa control received a priority 1 station lock out alarm due to gas detect at oneok's enterprise east delivery. Oneok personnel were immediately dispatched to the location. Upon arrival oneok personnel began isolating the leak on the oneok 246a meter and blowing down the meter through the enterprise east flare system. Once product had been removed from the meter, it was determined 3/4" pipe nipple, on the thermal relief line, for the inlet of the meter, had developed a crack and failed, causing the release. Oneok's investigation determined a 3/4" check valve on the thermal piping, had failed in the open position, allowing, high rates of product to flow through the 3/4" piping. Oneok replaced the 3/4" pipe nipple along with the check valve on the thermal piping. Oneok is it the process of replacing check valves located in similar operations, to prevent future failures.
| Report Received Date | 2017-06-08 00:00:00 |
|---|---|
| Iyear | 2017 |
| Report Number | 20170189 |
| Supplemental Number | 22396 |
| Report Type | Original 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 | 2017-05-13 22:18:00 |
| Location Latitude | 29.841234 Google Maps OpenStreetMap |
| Location Longitude | -94.892437 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 | 8.45 |
| Intentional Release Bbls | 22 |
| Recovered Bbls | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Cpm Leak Detection System Or Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Calculations) |
| Incident Identified Datetime | 2017-05-13 22:18:00 |
| System Part Involved | Onshore Pump/meter Station Equipment And Piping |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2017-05-13 22:18:00 |
| Restart Datetime | 2017-05-14 04:20:00 |
| On Site Datetime | 2017-05-13 22:26:00 |
| 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 | Enterprise East Facility |
| Segment Name | Enterprise East 246a Meter |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 77580 |
| Onshore City Name | Mont Belvieu |
| Onshore County Name | Chambers |
| Designated Location | Survey Station No. |
| Designated Name | Meter 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 | Intrastate |
| Item Involved | Relief Line And Relief Equipment |
| Installation Year | 2016 |
| 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 | Yes |
| Other Pop Ind | Yes |
| Other Pop Yes No | Yes |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 1125 |
| Est Cost Prop Damage | 100 |
| Est Cost Emergency | 300 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 1525 |
| Accident Psig | 1116 |
| 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 | Yes |
| Scada Conf Ind | No |
| 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 | High Flow Rate Caused Vibration In Relief Line. |
| Preparer Name | N*** J**** |
| Preparer Title | Requlatory Compliance Supervisor |
| Preparer Email | N*********@o****.com |
| Preparer Telephone | 580-395-6304 |
| Preparer Fax | 580-395-2933 |
| Prepared Date | 2017-06-08 00:00:00 |
| Authorizer Name | N*** J**** |
| Authorizer Telephone | 580-395-6304 |
| Authorizer Title | Regulatory Compliance Supervisor |
| Authorizer Email | N*********@o****.com |
| Narrative | At approximately 22:20 on 5/13/2017, oneok tulsa control received a priority 1 station lock out alarm due to gas detect at oneok's enterprise east delivery. Oneok personnel were immediately dispatched to the location. Upon arrival oneok personnel began isolating the leak on the oneok 246a meter and blowing down the meter through the enterprise east flare system. Once product had been removed from the meter, it was determined 3/4" pipe nipple, on the thermal relief line, for the inlet of the meter, had developed a crack and failed, causing the release. Oneok's investigation determined a 3/4" check valve on the thermal piping, had failed in the open position, allowing, high rates of product to flow through the 3/4" piping. Oneok replaced the 3/4" pipe nipple along with the check valve on the thermal piping. Oneok is it the process of replacing check valves located in similar operations, to prevent future failures. |
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