Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2015-08-25 — OK
Operator
Oneok Ngl Pipeline, Llc
Cause
Incorrect Operation
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
2015-08-25 13:05
Report number
Location
OK
Narrative
At approximately 13:05 on august 25, 2015 ethane vapors were identified leaking between flanges on the newly installed customer custody meter skid at the oneok's west winfree station. Piping was isolated, and product removed from the system. Oneok's investigation determined the leak occurred because the flanges had not been properly tightened due to the torque wrench used during construction had failed. Oneok also identified the lock out/tag out procedures were inadequate and communications between the construction team and operations team were ineffective. The construction team failed to notify operations the flanges had not been tightened. Operations failed to properly isolate existing piping from new construction by failing to install a blanking plate. Inadequate lock out/tag out procedures failed to isolate electricity to a motor operated valve which allowed operations personnel to remotely open the valve and allow ethane to flanges, resulting in the release. A safety stand down was initiated and lock out/tag out procedures and the importance of communications were reviewed and corrected. 1/22/2019 narrative updated - neal jones
Detailed record list
Report Received Date
2015-09-24 00:00:00
Iyear
2015
Report Number
20150343
Supplemental Number
31528
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
2015-08-25 13:00:00
Location Latitude
29.845934
Location Longitude
-94.908022
Commodity Released Type
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Commodity Subtype
Other Hvl
Commodity Details
Ethane
Unintentional Release Bbls
26
Intentional Release Bbls
0
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
2015-08-25 13:05:00
System Part Involved
Onshore Pump/meter Station Equipment And Piping
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2015-08-25 13:06:00
Restart Datetime
2015-08-25 14:19:00
On Site Datetime
2015-08-25 13:05:00
Nrc Rpt Num
Nrc Notification Not Required
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Oneok West Winfree Station
Segment Name
Oneok West Winfree Station
Onshore State Abbreviation
Tx
Onshore Postal Code
77580
Onshore City Name
Mt. Belvieu
Onshore County Name
Chambers
Designated Location
Milepost/valve Station
Designated Name
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
Other
Item Involved Details
Flanges
Installation Year
2015
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Other
Leak Type Other
Flanges Not Properly Tightened
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
215
Est Cost Prop Damage
100
Est Cost Emergency
500
Est Cost Environmental
0
Est Cost Other
0
Prpty
815
Accident Psig
996
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
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 occurred
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Incorrect Operation
Cause Details
Equipment Not Installed Properly
Operation Type
Equipment Not Installed Properly
Related Inadequate Proc Ind
Yes
Related Failure Follow Ind
Yes
Category Type
Commissioning
Operator Qualification Ind
Yes
Qualified Individuals
Yes, They Were Qualified For The Task(S)
Preparer Name
N*** J****
Preparer Title
Regulatory Compliance Coordinator
Preparer Email
N*********@o****.com
Preparer Telephone
580-395-6304
Preparer Fax
580-395-2933
Prepared Date
2019-01-22 00:00:00
Authorizer Name
N*** J****
Authorizer Telephone
580-395-6304
Authorizer Title
Regulatory Compliance Coordinator
Authorizer Email
N*********@o****.com
Narrative
At approximately 13:05 on august 25, 2015 ethane vapors were identified leaking between flanges on the newly installed customer custody meter skid at the oneok's west winfree station. Piping was isolated, and product removed from the system. Oneok's investigation determined the leak occurred because the flanges had not been properly tightened due to the torque wrench used during construction had failed. Oneok also identified the lock out/tag out procedures were inadequate and communications between the construction team and operations team were ineffective. The construction team failed to notify operations the flanges had not been tightened. Operations failed to properly isolate existing piping from new construction by failing to install a blanking plate. Inadequate lock out/tag out procedures failed to isolate electricity to a motor operated valve which allowed operations personnel to remotely open the valve and allow ethane to flanges, resulting in the release. A safety stand down was initiated and lock out/tag out procedures and the importance of communications were reviewed and corrected. 1/22/2019 narrative updated - neal jones
| Report Received Date | 2015-09-24 00:00:00 |
|---|---|
| Iyear | 2015 |
| Report Number | 20150343 |
| Supplemental Number | 31528 |
| 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 | 2015-08-25 13:00:00 |
| Location Latitude | 29.845934 Google Maps OpenStreetMap |
| Location Longitude | -94.908022 Google Maps OpenStreetMap |
| Commodity Released Type | Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions |
| Commodity Subtype | Other Hvl |
| Commodity Details | Ethane |
| Unintentional Release Bbls | 26 |
| Intentional Release Bbls | 0 |
| 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 | 2015-08-25 13:05:00 |
| System Part Involved | Onshore Pump/meter Station Equipment And Piping |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2015-08-25 13:06:00 |
| Restart Datetime | 2015-08-25 14:19:00 |
| On Site Datetime | 2015-08-25 13:05:00 |
| 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 | Oneok West Winfree Station |
| Segment Name | Oneok West Winfree Station |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 77580 |
| Onshore City Name | Mt. Belvieu |
| Onshore County Name | Chambers |
| Designated Location | Milepost/valve Station |
| Designated Name | 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 | Other |
| Item Involved Details | Flanges |
| Installation Year | 2015 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Other |
| Leak Type Other | Flanges Not Properly Tightened |
| 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 | 215 |
| Est Cost Prop Damage | 100 |
| Est Cost Emergency | 500 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 815 |
| Accident Psig | 996 |
| 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 | 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 occurred |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Incorrect Operation |
| Cause Details | Equipment Not Installed Properly |
| Operation Type | Equipment Not Installed Properly |
| Related Inadequate Proc Ind | Yes |
| Related Failure Follow Ind | Yes |
| Category Type | Commissioning |
| Operator Qualification Ind | Yes |
| Qualified Individuals | Yes, They Were Qualified For The Task(S) |
| Preparer Name | N*** J**** |
| Preparer Title | Regulatory Compliance Coordinator |
| Preparer Email | N*********@o****.com |
| Preparer Telephone | 580-395-6304 |
| Preparer Fax | 580-395-2933 |
| Prepared Date | 2019-01-22 00:00:00 |
| Authorizer Name | N*** J**** |
| Authorizer Telephone | 580-395-6304 |
| Authorizer Title | Regulatory Compliance Coordinator |
| Authorizer Email | N*********@o****.com |
| Narrative | At approximately 13:05 on august 25, 2015 ethane vapors were identified leaking between flanges on the newly installed customer custody meter skid at the oneok's west winfree station. Piping was isolated, and product removed from the system. Oneok's investigation determined the leak occurred because the flanges had not been properly tightened due to the torque wrench used during construction had failed. Oneok also identified the lock out/tag out procedures were inadequate and communications between the construction team and operations team were ineffective. The construction team failed to notify operations the flanges had not been tightened. Operations failed to properly isolate existing piping from new construction by failing to install a blanking plate. Inadequate lock out/tag out procedures failed to isolate electricity to a motor operated valve which allowed operations personnel to remotely open the valve and allow ethane to flanges, resulting in the release. A safety stand down was initiated and lock out/tag out procedures and the importance of communications were reviewed and corrected. 1/22/2019 narrative updated - neal jones |
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