Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2012-11-24 — OK
Operator
Explorer Pipeline Co
Cause
Equipment Failure
Commodity
Refined And/or Petroleum Product (Non-Hvl) Which Is A Liquid At Ambient Conditions
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$30,000
Incident datetime
2012-11-24 08:34
Report number
Location
OK
Narrative
On november 24, 2012 explorer pipelines huntsville, texas pump station experienced a release of 86 barrels of gasoline/transmix from a valve bonnet o-ring failure. The valve involved is a station valve associated with unit number one pump suction. At the time of the incident that pump station was isolated from the pipeline. Explorers scada received a station hazardous atmosphere alarm at 07:08 on november 24, 2012 after which time the controller conducted a controlled shut down of the pipeline and dispatched personnel to the station. Explorer personnel arrived at the station at 08:34 and confirmed a release. Much of the station consists of below grade piping or is inside station vaults. Maintenance crews arrived at the pump station at 10:30 on november 24, 2012 to locate the potential source and begin recovery and remediation. At 09:10 on november 25, 2012 the source was identified and confirmed to be the bonnet o-ring. At 09:12 on november 25, 2012 it was determined that the cost associated with the release would exceed $50,000 and the national response center was notified. All free-phase product was removed and any petroleum impacted soil is being excavated and tested for proper disposal. All remediation costs are included under emergency response as long term remediation is not expected. The viton o-ring was submitted to a third-party for a failure analysis to determine the source of the failure. The failure analysis indicated no physical or chemical evidence or chemical attack or chemical penetration. The entire o-ring revealed no evidence of end-to-end sealing (vulcanized) and therefore no failure of any joined ends. The microscopic evaluation showed evidence of impressions indicating particulate within the sealing surface and evidence of material loss due to debris abrasion along the primary id surfaces. However, the failure analysis could not provide definitive reasons for the leak other than the evidence of material loss and abrasions.
Detailed record list
Report Received Date
2012-12-21 00:00:00
Iyear
2012
Report Number
20120373
Supplemental Number
18529
Report Type
Supplemental Final
Operator Id
4805
Name
Explorer Pipeline Co
Operator Street Address
Po Box 2650
Operator City Name
Tulsa
Operator State Abbreviation
OK
Operator Postal Code
74101
Local Datetime
2012-11-24 07:08:00
Location Latitude
30.84377614
Location Longitude
-95.49514204
Commodity Released Type
Refined And/or Petroleum Product (Non-Hvl) Which Is A Liquid At Ambient Conditions
Commodity Subtype
Gasoline (Non-Ethanol)
Unintentional Release Bbls
86
Intentional Release Bbls
0
Recovered Bbls
86
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
2012-11-24 08:34:00
System Part Involved
Onshore Pump/meter Station Equipment And Piping
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2012-11-24 07:18:00
Restart Datetime
2012-11-24 15:30:00
On Site Datetime
2012-11-24 10:30:00
Nrc Rpt Datetime
2012-11-25 11:10:00
Nrc Rpt Num
1031466
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Huntsville Pump Station
Segment Name
Huntsville Pump Station
Onshore State Abbreviation
Tx
Onshore Postal Code
77320
Onshore City Name
Huntsville
Onshore County Name
Walker
Designated Location
Milepost/valve Station
Designated Name
151
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
Valve
Valve Type
Auxiliary Or Other Valve
Installation Year
1971
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Seal Or Packing
Wildlife Impact Ind
No
Soil Contamination
Yes
Long Term Assessment
No
Remediation Ind
Yes
Soil Remed Ind
Yes
Water Contam Ind
No
Could Be Hca
Yes
Commodity Reached Hca
No
Est Cost Oper Paid
0
Est Cost Gas Released
6700
Est Cost Prop Damage
30000
Est Cost Emergency
200000
Est Cost Environmental
259000
Est Cost Other
0
Prpty
495700
Accident Psig
500.4
Mop Psig
960
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
The station was isolated from the pipeline and the controllers actions did not cause or contribute to the incident.
Employee Drug Test Ind
Yes
Contractor Drug Test Ind
No
Num Employees Tested
1
Num Employees Failed
0
Cause
Equipment Failure
Cause Details
Other Equipment Failure
Eq Failure Type
Other Equipment Failure
Failure Details
Bonnet O-Ring On Unit 1 Suction Valve.
Eq Additional Other Ind
Yes
Eq Additional Other Details
Bonnet O-Ring On Unit 1 Suction Valve.
Preparer Name
K**** E* B****
Preparer Title
Dot Administrator
Preparer Email
K*****@e***.com
Preparer Telephone
9184935104
Prepared Date
2013-09-10 00:00:00
Authorizer Name
J** S****
Authorizer Telephone
9184935143
Authorizer Title
Director Hsse And Engineering
Authorizer Email
J*****@e***.com
Narrative
On november 24, 2012 explorer pipelines huntsville, texas pump station experienced a release of 86 barrels of gasoline/transmix from a valve bonnet o-ring failure. The valve involved is a station valve associated with unit number one pump suction. At the time of the incident that pump station was isolated from the pipeline. Explorers scada received a station hazardous atmosphere alarm at 07:08 on november 24, 2012 after which time the controller conducted a controlled shut down of the pipeline and dispatched personnel to the station. Explorer personnel arrived at the station at 08:34 and confirmed a release. Much of the station consists of below grade piping or is inside station vaults. Maintenance crews arrived at the pump station at 10:30 on november 24, 2012 to locate the potential source and begin recovery and remediation. At 09:10 on november 25, 2012 the source was identified and confirmed to be the bonnet o-ring. At 09:12 on november 25, 2012 it was determined that the cost associated with the release would exceed $50,000 and the national response center was notified. All free-phase product was removed and any petroleum impacted soil is being excavated and tested for proper disposal. All remediation costs are included under emergency response as long term remediation is not expected. The viton o-ring was submitted to a third-party for a failure analysis to determine the source of the failure. The failure analysis indicated no physical or chemical evidence or chemical attack or chemical penetration. The entire o-ring revealed no evidence of end-to-end sealing (vulcanized) and therefore no failure of any joined ends. The microscopic evaluation showed evidence of impressions indicating particulate within the sealing surface and evidence of material loss due to debris abrasion along the primary id surfaces. However, the failure analysis could not provide definitive reasons for the leak other than the evidence of material loss and abrasions.
| Report Received Date | 2012-12-21 00:00:00 |
|---|---|
| Iyear | 2012 |
| Report Number | 20120373 |
| Supplemental Number | 18529 |
| Report Type | Supplemental Final |
| Operator Id | 4805 PHMSA Enforcement |
| Name | Explorer Pipeline Co |
| Operator Street Address | Po Box 2650 |
| Operator City Name | Tulsa |
| Operator State Abbreviation | OK |
| Operator Postal Code | 74101 |
| Local Datetime | 2012-11-24 07:08:00 |
| Location Latitude | 30.84377614 Google Maps OpenStreetMap |
| Location Longitude | -95.49514204 Google Maps OpenStreetMap |
| Commodity Released Type | Refined And/or Petroleum Product (Non-Hvl) Which Is A Liquid At Ambient Conditions |
| Commodity Subtype | Gasoline (Non-Ethanol) |
| Unintentional Release Bbls | 86 |
| Intentional Release Bbls | 0 |
| Recovered Bbls | 86 |
| 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 | 2012-11-24 08:34:00 |
| System Part Involved | Onshore Pump/meter Station Equipment And Piping |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2012-11-24 07:18:00 |
| Restart Datetime | 2012-11-24 15:30:00 |
| On Site Datetime | 2012-11-24 10:30:00 |
| Nrc Rpt Datetime | 2012-11-25 11:10:00 |
| Nrc Rpt Num | 1031466 NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Huntsville Pump Station |
| Segment Name | Huntsville Pump Station |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 77320 |
| Onshore City Name | Huntsville |
| Onshore County Name | Walker |
| Designated Location | Milepost/valve Station |
| Designated Name | 151 |
| 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 | Valve |
| Valve Type | Auxiliary Or Other Valve |
| Installation Year | 1971 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Seal Or Packing |
| Wildlife Impact Ind | No |
| Soil Contamination | Yes |
| Long Term Assessment | No |
| Remediation Ind | Yes |
| Soil Remed Ind | Yes |
| Water Contam Ind | No |
| Could Be Hca | Yes |
| Commodity Reached Hca | No |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 6700 |
| Est Cost Prop Damage | 30000 |
| Est Cost Emergency | 200000 |
| Est Cost Environmental | 259000 |
| Est Cost Other | 0 |
| Prpty | 495700 |
| Accident Psig | 500.4 |
| Mop Psig | 960 |
| 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 | The station was isolated from the pipeline and the controllers actions did not cause or contribute to the incident. |
| Employee Drug Test Ind | Yes |
| Contractor Drug Test Ind | No |
| Num Employees Tested | 1 |
| Num Employees Failed | 0 |
| Cause | Equipment Failure |
| Cause Details | Other Equipment Failure |
| Eq Failure Type | Other Equipment Failure |
| Failure Details | Bonnet O-Ring On Unit 1 Suction Valve. |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | Bonnet O-Ring On Unit 1 Suction Valve. |
| Preparer Name | K**** E* B**** |
| Preparer Title | Dot Administrator |
| Preparer Email | K*****@e***.com |
| Preparer Telephone | 9184935104 |
| Prepared Date | 2013-09-10 00:00:00 |
| Authorizer Name | J** S**** |
| Authorizer Telephone | 9184935143 |
| Authorizer Title | Director Hsse And Engineering |
| Authorizer Email | J*****@e***.com |
| Narrative | On november 24, 2012 explorer pipelines huntsville, texas pump station experienced a release of 86 barrels of gasoline/transmix from a valve bonnet o-ring failure. The valve involved is a station valve associated with unit number one pump suction. At the time of the incident that pump station was isolated from the pipeline. Explorers scada received a station hazardous atmosphere alarm at 07:08 on november 24, 2012 after which time the controller conducted a controlled shut down of the pipeline and dispatched personnel to the station. Explorer personnel arrived at the station at 08:34 and confirmed a release. Much of the station consists of below grade piping or is inside station vaults. Maintenance crews arrived at the pump station at 10:30 on november 24, 2012 to locate the potential source and begin recovery and remediation. At 09:10 on november 25, 2012 the source was identified and confirmed to be the bonnet o-ring. At 09:12 on november 25, 2012 it was determined that the cost associated with the release would exceed $50,000 and the national response center was notified. All free-phase product was removed and any petroleum impacted soil is being excavated and tested for proper disposal. All remediation costs are included under emergency response as long term remediation is not expected. The viton o-ring was submitted to a third-party for a failure analysis to determine the source of the failure. The failure analysis indicated no physical or chemical evidence or chemical attack or chemical penetration. The entire o-ring revealed no evidence of end-to-end sealing (vulcanized) and therefore no failure of any joined ends. The microscopic evaluation showed evidence of impressions indicating particulate within the sealing surface and evidence of material loss due to debris abrasion along the primary id surfaces. However, the failure analysis could not provide definitive reasons for the leak other than the evidence of material loss and abrasions. |
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