HL incident on 2023-09-20 — OK

Operator
Williams Field Services
Cause
Equipment Failure
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)
$480,958
Incident datetime
2023-09-20 00:00 UTC
Report number
Location
OK
Narrative
Operator personnel replaced outboard seal on p-100 located at mcdonald ps couple hours prior to accident occurring. The seal was replaced due to indication of the primary seal leaking. Replacement packing was in long term storage. Root cause of failure was confirmed to be improper maintenance which lead to degradation of the pump seal. 14:57 local time pipeline control received an alarm notification of a fire detector shutdown alarm, which automatically shuts isolation valves to/from the mainline and shuts off pumps such that product source was prevented to the fire path. Fire was confirmed by site camera at 14:59. At approximately 15:40 pm local operations was on-site and stood by with local fire department away from scene until a work plan could be decided. The initial plan was to let the fire burn out and continue to monitor line pressures on system, at 15:55 it was determined that the thermal check valve was leaking by slightly and the pump loop pressure was not dropping as expected. Due to the lack of isolation path to the thermal check valve and the site condition was satisfactory for personnel entry site entry was decided once a safe work plan was developed and approved. Entry to site was made at 19:00pm to close the isolation vale to the check valve, light flare, and open path to flare. At 20:49pm fire was put out as all product was consumed to flare. Station was put back into service 8/26 11:00am local time. Second redundant pump (p-200) was put into service 8/30/23 10am local time. P-100 still out of service.
Detailed record list
Report Received Date
2023-09-20 00:00:00
Iyear
2023
Report Number
20230223
Supplemental Number
38915
Report Type
Supplemental Final
Operator Id
Name
Williams Field Services
Operator Street Address
One Williams Center Wrc-3
Operator City Name
Tulsa
Operator State Abbreviation
OK
Operator Postal Code
74172
Time Zone
Central
Daylight Savings Ind
Yes
Location Latitude
Location Longitude
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
32
Intentional Release Bbls
20
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Or Pack Calculations)
System Part Involved
Onshore Pump/meter Station Equipment And Piping
On Off Shore
Onshore
Status When Identified
Normal Operation, Includes Pauses Between Batches And During Maintenance
Shutdown Due Accident Ind
Yes
Communication State Fed Ind
Yes
Party Initiated Communication
Operator
Nrc Rpt Num
Additional Nrc Report Numbers
48 Hour Follow-Up - 1377411
Ignite Ind
Yes
How Extinguished
Allowed To Burn Out
Consumed By Fire In Barrels
32
Explode Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Mcdonald Ps
Segment Name
Overland Pass Pipeline (Oppl)
Onshore State Abbreviation
Ks
Onshore Postal Code
67745
Onshore City Name
Not Within A Municipality
Onshore County Name
Rawlins
Designated Location
Milepost
Designated Name
543.46
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
Pump
Pump Type
Centrifugal
Pump Service Type
Mainline
Installation Year
2023
Manufactured Year
Unknown
Material Involved
Material Other Than Carbon Steel
Material Details
Antimony / Tungsten Carbide & 316ss
Release Type
Leak
Leak Type
Seal Or Packing
Wildlife Impact Ind
No
Soil Contamination
No
Long Term Assessment
No
Remediation Ind
No
Water Contam Ind
No
Could Be Hca
No
Commodity Reached Hca
No
Est Cost Oper Paid
0
Est Cost Gas Released
1550
Est Cost Prop Damage
480958
Est Cost Emergency
2000
Est Cost Environmental
0
Est Cost Other
0
Prpty
484508
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Accident Psig
931
Mop Psig
1440
Mop Cfr Section
Component Design Pressure �195.406(A)(2)
Maop Established Date
2009-08-25 00:00:00
Maop Reversal Flow Ind
No
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
Pump station was operating at normal conditions and seal failure could not be caused by any action by a controller. Personnel who completed work on pump prior to accident were drug tested per 49 cfr 199.
Employee Drug Test Ind
Yes
Contractor Drug Test Ind
No
Num Employees Tested
3
Num Employees Failed
0
Cause
Equipment Failure
Cause Details
Pump Or Pump-Related Equipment
Eq Failure Type
Pump Or Pump-Related Equipment
Other Pump Ind
Seal/packing Failure
Additional Improper Mntnce Ind
Yes
Preparer Name
L***** H***
Preparer Title
Pipeline Safety Manager
Preparer Email
L**********@w*******.com
Preparer Telephone
9182404259
Preparer Fax
9182404259
Prepared Date
2023-12-06 00:00:00
Local Contact Name
T* S********
Local Contact Email
T***********@w*******.com
Local Contact Telephone
6208342162
Authorizer Name
L***** H***
Authorizer Telephone
9182404259
Authorizer Title
Pipeline Safety Manager
Authorizer Email
L**********@w*******.com
Narrative
Operator personnel replaced outboard seal on p-100 located at mcdonald ps couple hours prior to accident occurring. The seal was replaced due to indication of the primary seal leaking. Replacement packing was in long term storage. Root cause of failure was confirmed to be improper maintenance which lead to degradation of the pump seal. 14:57 local time pipeline control received an alarm notification of a fire detector shutdown alarm, which automatically shuts isolation valves to/from the mainline and shuts off pumps such that product source was prevented to the fire path. Fire was confirmed by site camera at 14:59. At approximately 15:40 pm local operations was on-site and stood by with local fire department away from scene until a work plan could be decided. The initial plan was to let the fire burn out and continue to monitor line pressures on system, at 15:55 it was determined that the thermal check valve was leaking by slightly and the pump loop pressure was not dropping as expected. Due to the lack of isolation path to the thermal check valve and the site condition was satisfactory for personnel entry site entry was decided once a safe work plan was developed and approved. Entry to site was made at 19:00pm to close the isolation vale to the check valve, light flare, and open path to flare. At 20:49pm fire was put out as all product was consumed to flare. Station was put back into service 8/26 11:00am local time. Second redundant pump (p-200) was put into service 8/30/23 10am local time. P-100 still out of service.
Report Received Date 2023-09-20 00:00:00
Iyear 2023
Report Number 20230223
Supplemental Number 38915
Report Type Supplemental Final
Operator Id 30826 PHMSA Enforcement
Name Williams Field Services
Operator Street Address One Williams Center Wrc-3
Operator City Name Tulsa
Operator State Abbreviation OK
Operator Postal Code 74172
Time Zone Central
Daylight Savings Ind Yes
Location Latitude 39.674353 Google Maps OpenStreetMap
Location Longitude -101.336132 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 32
Intentional Release Bbls 20
Recovered Bbls 0
Fatality Ind No
Fatal 0
Injury Ind No
Injure 0
Accident Identifier Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Or Pack Calculations)
System Part Involved Onshore Pump/meter Station Equipment And Piping
On Off Shore Onshore
Status When Identified Normal Operation, Includes Pauses Between Batches And During Maintenance
Shutdown Due Accident Ind Yes
Communication State Fed Ind Yes
Party Initiated Communication Operator
Nrc Rpt Num 1377299 NRC Report How to search
Additional Nrc Report Numbers 48 Hour Follow-Up - 1377411
Ignite Ind Yes
How Extinguished Allowed To Burn Out
Consumed By Fire In Barrels 32
Explode Ind No
Num Pub Evacuated 0
Pipe Fac Name Mcdonald Ps
Segment Name Overland Pass Pipeline (Oppl)
Onshore State Abbreviation Ks
Onshore Postal Code 67745
Onshore City Name Not Within A Municipality
Onshore County Name Rawlins
Designated Location Milepost
Designated Name 543.46
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 Pump
Pump Type Centrifugal
Pump Service Type Mainline
Installation Year 2023
Manufactured Year Unknown
Material Involved Material Other Than Carbon Steel
Material Details Antimony / Tungsten Carbide & 316ss
Release Type Leak
Leak Type Seal Or Packing
Wildlife Impact Ind No
Soil Contamination No
Long Term Assessment No
Remediation Ind No
Water Contam Ind No
Could Be Hca No
Commodity Reached Hca No
Est Cost Oper Paid 0
Est Cost Gas Released 1550
Est Cost Prop Damage 480958
Est Cost Emergency 2000
Est Cost Environmental 0
Est Cost Other 0
Prpty 484508
Num Persons Hosp Not Ovnght 0
Num Injured Treated By Emt 0
Num Resident Building Affctd 0
Num Business Building Affctd 0
Accident Psig 931
Mop Psig 1440
Mop Cfr Section Component Design Pressure �195.406(A)(2) View CFR 49 §192
Maop Established Date 2009-08-25 00:00:00
Maop Reversal Flow Ind No
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 Pump station was operating at normal conditions and seal failure could not be caused by any action by a controller. Personnel who completed work on pump prior to accident were drug tested per 49 cfr 199.
Employee Drug Test Ind Yes
Contractor Drug Test Ind No
Num Employees Tested 3
Num Employees Failed 0
Cause Equipment Failure
Cause Details Pump Or Pump-Related Equipment
Eq Failure Type Pump Or Pump-Related Equipment
Other Pump Ind Seal/packing Failure
Additional Improper Mntnce Ind Yes
Preparer Name L***** H***
Preparer Title Pipeline Safety Manager
Preparer Email L**********@w*******.com
Preparer Telephone 9182404259
Preparer Fax 9182404259
Prepared Date 2023-12-06 00:00:00
Local Contact Name T* S********
Local Contact Email T***********@w*******.com
Local Contact Telephone 6208342162
Authorizer Name L***** H***
Authorizer Telephone 9182404259
Authorizer Title Pipeline Safety Manager
Authorizer Email L**********@w*******.com
Narrative Operator personnel replaced outboard seal on p-100 located at mcdonald ps couple hours prior to accident occurring. The seal was replaced due to indication of the primary seal leaking. Replacement packing was in long term storage. Root cause of failure was confirmed to be improper maintenance which lead to degradation of the pump seal. 14:57 local time pipeline control received an alarm notification of a fire detector shutdown alarm, which automatically shuts isolation valves to/from the mainline and shuts off pumps such that product source was prevented to the fire path. Fire was confirmed by site camera at 14:59. At approximately 15:40 pm local operations was on-site and stood by with local fire department away from scene until a work plan could be decided. The initial plan was to let the fire burn out and continue to monitor line pressures on system, at 15:55 it was determined that the thermal check valve was leaking by slightly and the pump loop pressure was not dropping as expected. Due to the lack of isolation path to the thermal check valve and the site condition was satisfactory for personnel entry site entry was decided once a safe work plan was developed and approved. Entry to site was made at 19:00pm to close the isolation vale to the check valve, light flare, and open path to flare. At 20:49pm fire was put out as all product was consumed to flare. Station was put back into service 8/26 11:00am local time. Second redundant pump (p-200) was put into service 8/30/23 10am local time. P-100 still out of service.

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