Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2019-12-04 — TX
Operator
Sfpp, Lp
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)
$80,000
Incident datetime
2019-12-04 14:51
Report number
Location
TX
Narrative
The station operator discovered a leak on the ls-105 24" east surge line w1 near tank w-1 manifold valve. At the time of the discovery watson was supplying the east tube from tank w-16 (jet fuel). The east surge line was then drained and the product pool near the w-1 valve was pulled back into the surge line. At this time, there appears to be an issue with the east surge line below grade near the w-1 east surge line valve, as the leak appeared to originate at the valve stem at a bolted connection. An investigation into the failure and cause of the leak is still pending and future supplemental report will provide a cause. Update 6/24/2020 for supplemental/final submission - after multiple failure analysis evaluations, and a thorough review of all available information and data, the investigation concluded that the probable failure of the hydraulic control block internal reliefs resulted in excess pressure applied to the valve during actuation. This resulted in the damage to the valve bonnet bolts and allowed the bonnet to separate from the valve body. This combined with the damage to the valve slips and sealing surfaces provided a flow path for product to release from the valve.
Detailed record list
Report Received Date
2019-12-23 00:00:00
Iyear
2019
Report Number
20190397
Supplemental Number
33946
Report Type
Supplemental Final
Operator Id
18092
Name
Sfpp, Lp
Operator Street Address
1001 Louisiana St., Suite 1000
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Local Datetime
2019-12-04 14:51:00
Location Latitude
33.845853
Location Longitude
-118.233501
Commodity Released Type
Refined And/or Petroleum Product (Non-Hvl) Which Is A Liquid At Ambient Conditions
Commodity Subtype
Diesel, Fuel Oil, Kerosene, Jet Fuel
Unintentional Release Bbls
23.9
Recovered Bbls
23
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
Incident Identified Datetime
2019-12-04 14:51:00
System Part Involved
Onshore Terminal/tank Farm Equipment And Piping
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2019-12-04 14:51:00
Restart Datetime
2019-12-04 15:10:00
On Site Datetime
2019-12-04 14:51:00
Nrc Rpt Datetime
2019-12-04 15:11:00
Nrc Rpt Num
1265539
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Watson Station
Segment Name
Ls-105 24" East Surge Line W1
Onshore State Abbreviation
Ca
Onshore Postal Code
90810
Onshore City Name
Carson
Onshore County Name
Los Angeles
Designated Location
Milepost/valve Station
Designated Name
0
Federal
No
Location Type
Totally Contained On Operator-Controlled Property
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
30
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Valve
Valve Type
Auxiliary Or Other Valve
Installation Year
1955
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Seal Or Packing
Wildlife Impact Ind
No
Soil Contamination
Yes
Long Term Assessment
Yes
Remediation Ind
Yes
Soil Remed Ind
Yes
Water Contam Ind
No
Could Be Hca
Yes
Commodity Reached Hca
Yes
High Pop Ind
Yes
High Pop Yes No
Yes
Usa Drinking Ind
Yes
Usa Drinking Yes No
Yes
Est Cost Oper Paid
0
Est Cost Gas Released
1965
Est Cost Prop Damage
80000
Est Cost Emergency
9000
Est Cost Environmental
10000
Est Cost Other
0
Prpty
100965
Accident Psig
20
Mop Psig
150
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
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 performance of a covered function of the controller did not cause or contribute to this accident. Leak was discovered by the operator performing a shift inspection.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Malfunction Of Control/relief Equipment
Eq Failure Type
Malfunction Of Control/relief Equipment
Relief Valve Ind
Yes
Additional Overpressure Ind
Yes
Preparer Name
W*** S******
Preparer Title
Pipeline Technical Specialist
Preparer Email
W***********@k***********.com
Preparer Telephone
661-304-6971
Prepared Date
2020-06-24 00:00:00
Authorizer Name
Q****** F******
Authorizer Telephone
770-751-4240
Authorizer Title
Director Compliance Codes And Standards
Authorizer Email
Q**************@k***********.com
Narrative
The station operator discovered a leak on the ls-105 24" east surge line w1 near tank w-1 manifold valve. At the time of the discovery watson was supplying the east tube from tank w-16 (jet fuel). The east surge line was then drained and the product pool near the w-1 valve was pulled back into the surge line. At this time, there appears to be an issue with the east surge line below grade near the w-1 east surge line valve, as the leak appeared to originate at the valve stem at a bolted connection. An investigation into the failure and cause of the leak is still pending and future supplemental report will provide a cause. Update 6/24/2020 for supplemental/final submission - after multiple failure analysis evaluations, and a thorough review of all available information and data, the investigation concluded that the probable failure of the hydraulic control block internal reliefs resulted in excess pressure applied to the valve during actuation. This resulted in the damage to the valve bonnet bolts and allowed the bonnet to separate from the valve body. This combined with the damage to the valve slips and sealing surfaces provided a flow path for product to release from the valve.
| Report Received Date | 2019-12-23 00:00:00 |
|---|---|
| Iyear | 2019 |
| Report Number | 20190397 |
| Supplemental Number | 33946 |
| Report Type | Supplemental Final |
| Operator Id | 18092 PHMSA Enforcement |
| Name | Sfpp, Lp |
| Operator Street Address | 1001 Louisiana St., Suite 1000 |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77002 |
| Local Datetime | 2019-12-04 14:51:00 |
| Location Latitude | 33.845853 Google Maps OpenStreetMap |
| Location Longitude | -118.233501 Google Maps OpenStreetMap |
| Commodity Released Type | Refined And/or Petroleum Product (Non-Hvl) Which Is A Liquid At Ambient Conditions |
| Commodity Subtype | Diesel, Fuel Oil, Kerosene, Jet Fuel |
| Unintentional Release Bbls | 23.9 |
| Recovered Bbls | 23 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| Incident Identified Datetime | 2019-12-04 14:51:00 |
| System Part Involved | Onshore Terminal/tank Farm Equipment And Piping |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2019-12-04 14:51:00 |
| Restart Datetime | 2019-12-04 15:10:00 |
| On Site Datetime | 2019-12-04 14:51:00 |
| Nrc Rpt Datetime | 2019-12-04 15:11:00 |
| Nrc Rpt Num | 1265539 NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Watson Station |
| Segment Name | Ls-105 24" East Surge Line W1 |
| Onshore State Abbreviation | Ca |
| Onshore Postal Code | 90810 |
| Onshore City Name | Carson |
| Onshore County Name | Los Angeles |
| Designated Location | Milepost/valve Station |
| Designated Name | 0 |
| Federal | No |
| Location Type | Totally Contained On Operator-Controlled Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 30 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Valve |
| Valve Type | Auxiliary Or Other Valve |
| Installation Year | 1955 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Seal Or Packing |
| Wildlife Impact Ind | No |
| Soil Contamination | Yes |
| Long Term Assessment | Yes |
| Remediation Ind | Yes |
| Soil Remed Ind | Yes |
| Water Contam Ind | No |
| Could Be Hca | Yes |
| Commodity Reached Hca | Yes |
| High Pop Ind | Yes |
| High Pop Yes No | Yes |
| Usa Drinking Ind | Yes |
| Usa Drinking Yes No | Yes |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 1965 |
| Est Cost Prop Damage | 80000 |
| Est Cost Emergency | 9000 |
| Est Cost Environmental | 10000 |
| Est Cost Other | 0 |
| Prpty | 100965 |
| Accident Psig | 20 |
| Mop Psig | 150 |
| 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 | 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 performance of a covered function of the controller did not cause or contribute to this accident. Leak was discovered by the operator performing a shift inspection. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Malfunction Of Control/relief Equipment |
| Eq Failure Type | Malfunction Of Control/relief Equipment |
| Relief Valve Ind | Yes |
| Additional Overpressure Ind | Yes |
| Preparer Name | W*** S****** |
| Preparer Title | Pipeline Technical Specialist |
| Preparer Email | W***********@k***********.com |
| Preparer Telephone | 661-304-6971 |
| Prepared Date | 2020-06-24 00:00:00 |
| Authorizer Name | Q****** F****** |
| Authorizer Telephone | 770-751-4240 |
| Authorizer Title | Director Compliance Codes And Standards |
| Authorizer Email | Q**************@k***********.com |
| Narrative | The station operator discovered a leak on the ls-105 24" east surge line w1 near tank w-1 manifold valve. At the time of the discovery watson was supplying the east tube from tank w-16 (jet fuel). The east surge line was then drained and the product pool near the w-1 valve was pulled back into the surge line. At this time, there appears to be an issue with the east surge line below grade near the w-1 east surge line valve, as the leak appeared to originate at the valve stem at a bolted connection. An investigation into the failure and cause of the leak is still pending and future supplemental report will provide a cause. Update 6/24/2020 for supplemental/final submission - after multiple failure analysis evaluations, and a thorough review of all available information and data, the investigation concluded that the probable failure of the hydraulic control block internal reliefs resulted in excess pressure applied to the valve during actuation. This resulted in the damage to the valve bonnet bolts and allowed the bonnet to separate from the valve body. This combined with the damage to the valve slips and sealing surfaces provided a flow path for product to release from the valve. |
External Resources
PHMSA pipeline safety insights.
Product
Features
Company
All rights reserved. Copyright © by ClearPHMSA