Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2018-06-19 — 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)
$0
Incident datetime
2018-06-19 12:30
Report number
Location
OK
Narrative
A flash fire occurred on june 19, 2018, at the oneok ngl pipeline, sterling iii groveton pump station while personnel were welding a flange on pump header piping during construction/maintenance work. The fire was immediately extinguished and there were no injuries. The pump station piping had been isolated (air gapped); products evacuated, nitrogen purged, and then left open to atmosphere for 24 hours prior to the beginning of the work. During the course of the work, crews had cut the piping going to the pump and had successfully installed the first flange. The fire occurred during the installation of the second flange on the same piping. The fire immediately burned itself out, and the fire watch discharged a fire extinguisher. The incident occurred simultaneously with valve maintenance activity that was occurring in close proximity. The pipe had been evacuated and, as an additional precaution, hydrocarbon monitoring was in place both upstream and downstream of the valve work, without any hydrocarbon detection. However, the addition of the valve work may have resulted in undetected hydrocarbons impacting the welding operation. After the incident, all work was stopped and the work procedures were reviewed. The hot work was terminated until the valve maintenance was completed. Upon completion of the valve work, the area was verified to be hydrocarbon free, and the welding was completed without incident. As a result of the incident, oneok has re-emphasized the hazards of simultaneous work and is reviewing future scheduled work activities in order to better manage the hazards associated with simultaneous work. Updated 8/20/18: updated number of company employees drug tested to 6. Zero test failures.
Detailed record list
Report Received Date
2018-07-19 00:00:00
Iyear
2018
Report Number
20180207
Supplemental Number
30822
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
2018-06-19 12:30:00
Location Latitude
31.0525
Location Longitude
-95.2443
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
0.02
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
2018-06-19 12:30:00
System Part Involved
Onshore Pump/meter Station Equipment And Piping
On Off Shore
Onshore
Shutdown Due Accident Ind
No
Shutdown Explain
Facility Was Isolated And Shutdown Previously To Release
On Site Datetime
2018-06-19 12:30:00
Nrc Rpt Datetime
2018-06-22 11:16:00
Nrc Rpt Num
1216109
Ignite Ind
Yes
Explode Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Oneok Groveton Pump Station
Segment Name
Oneok Sterling Iii Pipeline Index #10547
Onshore State Abbreviation
Tx
Onshore Postal Code
75845
Onshore City Name
Not Within A Municipality
Onshore County Name
Trinity
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
Flange Assembly
Installation Year
2018
Material Involved
Carbon Steel
Release Type
Other
Release Type Details
Flash Fire From Residual Gas While Welding A Flange To Station Piping.
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
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
0
Est Cost Prop Damage
0
Est Cost Emergency
50
Est Cost Environmental
0
Est Cost Other
0
Prpty
50
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
No controller actions had taken place. Pump station was isolated from pipeline and shutdown. Station was under local control.
Employee Drug Test Ind
Yes
Contractor Drug Test Ind
No
Num Employees Tested
6
Num Employees Failed
0
Cause
Incorrect Operation
Cause Details
Other Incorrect Operation
Operation Type
Other Incorrect Operation
Operation Details
Multiple Construction And Maintenance Tasks Were Occurring Simultaneously At The Pump Station. Station Had Been Air Gapped Nitrogen Purged And Hydrocarbons Vented For More Than 24 Hours. The Addition Of The Valve Work While Conducting Hot Work May Have Resulted In Undetected Hydrocarbons Impacting The Welding.
Related Inadequate Proc Ind
Yes
Category Type
Other Maintenance
Operator Qualification Ind
Yes
Qualified Individuals
Yes, They Were Qualified For The Task(S)
Preparer Name
N*** J****
Preparer Title
Requlatory Compliance Manager
Preparer Email
N*********@o****.com
Preparer Telephone
580-395-6304
Preparer Fax
580-395-2933
Prepared Date
2018-08-20 00:00:00
Authorizer Name
N*** J****
Authorizer Telephone
580-395-6304
Authorizer Title
Regulatory Compliance Manager
Authorizer Email
N*********@o****.com
Narrative
A flash fire occurred on june 19, 2018, at the oneok ngl pipeline, sterling iii groveton pump station while personnel were welding a flange on pump header piping during construction/maintenance work. The fire was immediately extinguished and there were no injuries. The pump station piping had been isolated (air gapped); products evacuated, nitrogen purged, and then left open to atmosphere for 24 hours prior to the beginning of the work. During the course of the work, crews had cut the piping going to the pump and had successfully installed the first flange. The fire occurred during the installation of the second flange on the same piping. The fire immediately burned itself out, and the fire watch discharged a fire extinguisher. The incident occurred simultaneously with valve maintenance activity that was occurring in close proximity. The pipe had been evacuated and, as an additional precaution, hydrocarbon monitoring was in place both upstream and downstream of the valve work, without any hydrocarbon detection. However, the addition of the valve work may have resulted in undetected hydrocarbons impacting the welding operation. After the incident, all work was stopped and the work procedures were reviewed. The hot work was terminated until the valve maintenance was completed. Upon completion of the valve work, the area was verified to be hydrocarbon free, and the welding was completed without incident. As a result of the incident, oneok has re-emphasized the hazards of simultaneous work and is reviewing future scheduled work activities in order to better manage the hazards associated with simultaneous work. Updated 8/20/18: updated number of company employees drug tested to 6. Zero test failures.
| Report Received Date | 2018-07-19 00:00:00 |
|---|---|
| Iyear | 2018 |
| Report Number | 20180207 |
| Supplemental Number | 30822 |
| 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 | 2018-06-19 12:30:00 |
| Location Latitude | 31.0525 Google Maps OpenStreetMap |
| Location Longitude | -95.2443 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 | 0.02 |
| 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 | 2018-06-19 12:30:00 |
| System Part Involved | Onshore Pump/meter Station Equipment And Piping |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | Facility Was Isolated And Shutdown Previously To Release |
| On Site Datetime | 2018-06-19 12:30:00 |
| Nrc Rpt Datetime | 2018-06-22 11:16:00 |
| Nrc Rpt Num | 1216109 NRC Report How to search |
| Ignite Ind | Yes |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Oneok Groveton Pump Station |
| Segment Name | Oneok Sterling Iii Pipeline Index #10547 |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 75845 |
| Onshore City Name | Not Within A Municipality |
| Onshore County Name | Trinity |
| 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 | Flange Assembly |
| Installation Year | 2018 |
| Material Involved | Carbon Steel |
| Release Type | Other |
| Release Type Details | Flash Fire From Residual Gas While Welding A Flange To Station Piping. |
| 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 |
| 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 | 0 |
| Est Cost Prop Damage | 0 |
| Est Cost Emergency | 50 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 50 |
| 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 | No controller actions had taken place. Pump station was isolated from pipeline and shutdown. Station was under local control. |
| Employee Drug Test Ind | Yes |
| Contractor Drug Test Ind | No |
| Num Employees Tested | 6 |
| Num Employees Failed | 0 |
| Cause | Incorrect Operation |
| Cause Details | Other Incorrect Operation |
| Operation Type | Other Incorrect Operation |
| Operation Details | Multiple Construction And Maintenance Tasks Were Occurring Simultaneously At The Pump Station. Station Had Been Air Gapped Nitrogen Purged And Hydrocarbons Vented For More Than 24 Hours. The Addition Of The Valve Work While Conducting Hot Work May Have Resulted In Undetected Hydrocarbons Impacting The Welding. |
| Related Inadequate Proc Ind | Yes |
| Category Type | Other Maintenance |
| Operator Qualification Ind | Yes |
| Qualified Individuals | Yes, They Were Qualified For The Task(S) |
| Preparer Name | N*** J**** |
| Preparer Title | Requlatory Compliance Manager |
| Preparer Email | N*********@o****.com |
| Preparer Telephone | 580-395-6304 |
| Preparer Fax | 580-395-2933 |
| Prepared Date | 2018-08-20 00:00:00 |
| Authorizer Name | N*** J**** |
| Authorizer Telephone | 580-395-6304 |
| Authorizer Title | Regulatory Compliance Manager |
| Authorizer Email | N*********@o****.com |
| Narrative | A flash fire occurred on june 19, 2018, at the oneok ngl pipeline, sterling iii groveton pump station while personnel were welding a flange on pump header piping during construction/maintenance work. The fire was immediately extinguished and there were no injuries. The pump station piping had been isolated (air gapped); products evacuated, nitrogen purged, and then left open to atmosphere for 24 hours prior to the beginning of the work. During the course of the work, crews had cut the piping going to the pump and had successfully installed the first flange. The fire occurred during the installation of the second flange on the same piping. The fire immediately burned itself out, and the fire watch discharged a fire extinguisher. The incident occurred simultaneously with valve maintenance activity that was occurring in close proximity. The pipe had been evacuated and, as an additional precaution, hydrocarbon monitoring was in place both upstream and downstream of the valve work, without any hydrocarbon detection. However, the addition of the valve work may have resulted in undetected hydrocarbons impacting the welding operation. After the incident, all work was stopped and the work procedures were reviewed. The hot work was terminated until the valve maintenance was completed. Upon completion of the valve work, the area was verified to be hydrocarbon free, and the welding was completed without incident. As a result of the incident, oneok has re-emphasized the hazards of simultaneous work and is reviewing future scheduled work activities in order to better manage the hazards associated with simultaneous work. Updated 8/20/18: updated number of company employees drug tested to 6. Zero test failures. |
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