Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2015-11-05 — 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)
$750
Incident datetime
2015-11-05 18:00
Report number
Location
OK
Narrative
On november 5th, 2015, a flash fire incident occurred at arbuckle pipeline's enterprise-targa delivery facility located in mont belvieu, tx. This facility is owned by oneok arbuckle pipeline, l.L.C. And operated by oneok ngl pipeline, l.L.C. ('oneok'). The flash fire occurred during the course of changing the filter elements contained in a horizontal pipeline delivery filter used in mixed natural gas liquid (y-grade) service at the facility. As part of the filter element change process, the filter vessel was isolated, the product was evacuated through flaring, and the vessel was steamed to a temperature of 200�f in an effort to remove residual hydrocarbons. Subsequently, lockout-tagout was applied, a permit issued (allowing hot work), and contract personnel commenced with opening the vessel to change the elements. Atmospheric monitoring was performed at the vessel door prior to removing the dirty filter elements and a zero percent lower explosive limit was observed. During the element change process, while the new (clean) filter elements were being secured to the filter rods using a cordless impact wrench, a flash fire occurred. Oneok conducted an investigation into the incident. We believe that the continuous atmospheric monitoring did not detect the residual hydrocarbons contained in the vessel which ignited. We further believe the ignition may have been a result of the cordless impact wrench itself or as a direct result of using the device. In response to the incident, oneok has made changes to the facility's filter change procedure which now provides additional detail as to how continuous atmospheric monitoring should occur and eliminates any use of cordless impact wrenches.
Detailed record list
Report Received Date
2015-12-03 00:00:00
Iyear
2015
Report Number
20150445
Supplemental Number
21465
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
2015-11-05 18:00:00
Location Latitude
29.86
Location Longitude
-94.9017
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
0.1
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
Contractor Working For The Operator
Incident Identified Datetime
2015-11-05 18:00:00
System Part Involved
Onshore Pump/meter Station Equipment And Piping
On Off Shore
Onshore
Shutdown Due Accident Ind
No
Shutdown Explain
Incident Occurred At Filter Vessel, Vessel Was Off Line, Pipeline Continued Flow
On Site Datetime
2015-11-05 18:00:00
Nrc Rpt Datetime
2015-11-05 18:50:00
Nrc Rpt Num
1132691
Ignite Ind
Yes
Explode Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Arbuckle Pipeline - Enterprise-Targa Delivery
Segment Name
Oneok Site 525 - Arbuckle Enterprise Targa Del.
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
Interstate
Item Involved
Tank/vessel
Tank Vessel Subtype
Other
Tank Vessel Details
Filter Vessel
Installation Year
2010
Material Involved
Carbon Steel
Release Type
Other
Release Type Details
Residual Hydrocarbons
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
2
Est Cost Prop Damage
750
Est Cost Emergency
250
Est Cost Environmental
0
Est Cost Other
0
Prpty
1002
Accident Psig
0
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
Filter vessel was off line at the time of the incident. Controllers did not have any actions associated with the incident.
Employee Drug Test Ind
Yes
Contractor Drug Test Ind
Yes
Num Employees Tested
1
Num Employees Failed
0
Num Contractors Tested
3
Num Contractors Failed
0
Cause
Incorrect Operation
Cause Details
Other Incorrect Operation
Operation Type
Other Incorrect Operation
Operation Details
Procedures Were Inadequate And Existing Procedures Were Not Followed.
Related Inadequate Proc Ind
Yes
Related Failure Follow Ind
Yes
Category Type
Routine Maintenance
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
2016-06-27 00:00:00
Authorizer Name
N*** J****
Authorizer Telephone
580-395-6304
Authorizer Title
Regulatory Compliance Coordinator
Authorizer Email
N*********@o****.com
Narrative
On november 5th, 2015, a flash fire incident occurred at arbuckle pipeline's enterprise-targa delivery facility located in mont belvieu, tx. This facility is owned by oneok arbuckle pipeline, l.L.C. And operated by oneok ngl pipeline, l.L.C. ('oneok'). The flash fire occurred during the course of changing the filter elements contained in a horizontal pipeline delivery filter used in mixed natural gas liquid (y-grade) service at the facility. As part of the filter element change process, the filter vessel was isolated, the product was evacuated through flaring, and the vessel was steamed to a temperature of 200�f in an effort to remove residual hydrocarbons. Subsequently, lockout-tagout was applied, a permit issued (allowing hot work), and contract personnel commenced with opening the vessel to change the elements. Atmospheric monitoring was performed at the vessel door prior to removing the dirty filter elements and a zero percent lower explosive limit was observed. During the element change process, while the new (clean) filter elements were being secured to the filter rods using a cordless impact wrench, a flash fire occurred. Oneok conducted an investigation into the incident. We believe that the continuous atmospheric monitoring did not detect the residual hydrocarbons contained in the vessel which ignited. We further believe the ignition may have been a result of the cordless impact wrench itself or as a direct result of using the device. In response to the incident, oneok has made changes to the facility's filter change procedure which now provides additional detail as to how continuous atmospheric monitoring should occur and eliminates any use of cordless impact wrenches.
| Report Received Date | 2015-12-03 00:00:00 |
|---|---|
| Iyear | 2015 |
| Report Number | 20150445 |
| Supplemental Number | 21465 |
| 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 | 2015-11-05 18:00:00 |
| Location Latitude | 29.86 Google Maps OpenStreetMap |
| Location Longitude | -94.9017 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 | 0.1 |
| 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 | Contractor Working For The Operator |
| Incident Identified Datetime | 2015-11-05 18:00:00 |
| System Part Involved | Onshore Pump/meter Station Equipment And Piping |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | Incident Occurred At Filter Vessel, Vessel Was Off Line, Pipeline Continued Flow |
| On Site Datetime | 2015-11-05 18:00:00 |
| Nrc Rpt Datetime | 2015-11-05 18:50:00 |
| Nrc Rpt Num | 1132691 NRC Report How to search |
| Ignite Ind | Yes |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Arbuckle Pipeline - Enterprise-Targa Delivery |
| Segment Name | Oneok Site 525 - Arbuckle Enterprise Targa Del. |
| 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 | Interstate |
| Item Involved | Tank/vessel |
| Tank Vessel Subtype | Other |
| Tank Vessel Details | Filter Vessel |
| Installation Year | 2010 |
| Material Involved | Carbon Steel |
| Release Type | Other |
| Release Type Details | Residual Hydrocarbons |
| 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 | 2 |
| Est Cost Prop Damage | 750 |
| Est Cost Emergency | 250 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 1002 |
| Accident Psig | 0 |
| 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 | Filter vessel was off line at the time of the incident. Controllers did not have any actions associated with the incident. |
| Employee Drug Test Ind | Yes |
| Contractor Drug Test Ind | Yes |
| Num Employees Tested | 1 |
| Num Employees Failed | 0 |
| Num Contractors Tested | 3 |
| Num Contractors Failed | 0 |
| Cause | Incorrect Operation |
| Cause Details | Other Incorrect Operation |
| Operation Type | Other Incorrect Operation |
| Operation Details | Procedures Were Inadequate And Existing Procedures Were Not Followed. |
| Related Inadequate Proc Ind | Yes |
| Related Failure Follow Ind | Yes |
| Category Type | Routine Maintenance |
| 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 | 2016-06-27 00:00:00 |
| Authorizer Name | N*** J**** |
| Authorizer Telephone | 580-395-6304 |
| Authorizer Title | Regulatory Compliance Coordinator |
| Authorizer Email | N*********@o****.com |
| Narrative | On november 5th, 2015, a flash fire incident occurred at arbuckle pipeline's enterprise-targa delivery facility located in mont belvieu, tx. This facility is owned by oneok arbuckle pipeline, l.L.C. And operated by oneok ngl pipeline, l.L.C. ('oneok'). The flash fire occurred during the course of changing the filter elements contained in a horizontal pipeline delivery filter used in mixed natural gas liquid (y-grade) service at the facility. As part of the filter element change process, the filter vessel was isolated, the product was evacuated through flaring, and the vessel was steamed to a temperature of 200�f in an effort to remove residual hydrocarbons. Subsequently, lockout-tagout was applied, a permit issued (allowing hot work), and contract personnel commenced with opening the vessel to change the elements. Atmospheric monitoring was performed at the vessel door prior to removing the dirty filter elements and a zero percent lower explosive limit was observed. During the element change process, while the new (clean) filter elements were being secured to the filter rods using a cordless impact wrench, a flash fire occurred. Oneok conducted an investigation into the incident. We believe that the continuous atmospheric monitoring did not detect the residual hydrocarbons contained in the vessel which ignited. We further believe the ignition may have been a result of the cordless impact wrench itself or as a direct result of using the device. In response to the incident, oneok has made changes to the facility's filter change procedure which now provides additional detail as to how continuous atmospheric monitoring should occur and eliminates any use of cordless impact wrenches. |
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