Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2021-03-21 — OK
Operator
Magellan Pipeline Company, 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)
$275,000
Incident datetime
2021-03-21 21:52
Report number
Location
OK
Narrative
At 20:52 on march 21st, 2021, magellan operations control initiated a stop command for the henrietta unit. The unit continued to show a run status and a magellan technician was immediately dispatched to troubleshoot the issue. At 21:52, operations control received a call from a 3rd party reporting a fire at the henrietta pump station. A code red event was initiated and the henrietta fire department arrived onsite and extinguished the fire. A de minimus volume of product was released and there were no indications that product reached the ground. An incident investigation was performed and determined the cause of the failure to be a failure with the run relay. The run status in the plc was a reflection of the run control output status. A stop command from the controller caused the run relay output to drop out, however, the run relay failed and welded in the closed position. This caused the motor starter to not respond to the stop command from the plc system. The suction and discharge valves on the unit closed as expected during the shutdown sequence. The unit continued to operate against the closed valves, increasing the temperature of the product, which ultimately caused the inboard mechanical seal to fail. To prevent future occurrence, the run and stop relay outputs from the mainline starter will be separated. Additionally, emergency shutdown relays will be installed and wired directly into the circuit breaker feeding the motor starter for all active stations on the orion pipeline system. A process will also be developed to evaluate the controls system architecture for all assets owned by the previous operator. Supplemental/final (09-20-2021) part g, h
Detailed record list
Report Received Date
2021-04-20 00:00:00
Iyear
2021
Report Number
20210125
Supplemental Number
35752
Report Type
Supplemental Final
Operator Id
22610
Name
Magellan Pipeline Company, Lp
Operator Street Address
100 West 5th Street
Operator City Name
Tulsa
Operator State Abbreviation
OK
Operator Postal Code
74103
Local Datetime
2021-03-21 21:52:00
Location Latitude
33.832361
Location Longitude
-98.2779
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
0.1
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Notification From Public
Incident Identified Datetime
2021-03-21 21:52:00
System Part Involved
Onshore Pump/meter Station Equipment And Piping
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2021-03-21 20:47:00
Restart Datetime
2021-03-23 18:28:00
On Site Datetime
2021-03-21 23:16:00
Nrc Rpt Datetime
2021-03-21 22:25:00
Nrc Rpt Num
1300946
Ignite Ind
Yes
Explode Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Henrietta Station
Segment Name
Fac Id 737
Onshore State Abbreviation
Tx
Onshore Postal Code
76365
Onshore City Name
Not Within A Municipality
Onshore County Name
Clay
Designated Location
Milepost/valve Station
Designated Name
0
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
Installation Year
1997
Material Involved
Carbon Steel
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
31
Est Cost Prop Damage
275000
Est Cost Emergency
18046
Est Cost Environmental
0
Est Cost Other
0
Prpty
293077
Accident Psig
400
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
Release was below detectable thresholds within cpm/scada systems.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Other Equipment Failure
Eq Failure Type
Other Equipment Failure
Failure Details
Relay Failure
Additional Alarm Ind
Yes
Preparer Name
S****** L******
Preparer Title
Ai Analyst
Preparer Email
S**************@m*********.com
Preparer Telephone
918-574-7327
Preparer Fax
918-574-7376
Prepared Date
2021-09-20 00:00:00
Authorizer Name
G**** R****
Authorizer Telephone
918-574-7165
Authorizer Title
Supervisor Integrity Management
Authorizer Email
G**********@m*********.com
Narrative
At 20:52 on march 21st, 2021, magellan operations control initiated a stop command for the henrietta unit. The unit continued to show a run status and a magellan technician was immediately dispatched to troubleshoot the issue. At 21:52, operations control received a call from a 3rd party reporting a fire at the henrietta pump station. A code red event was initiated and the henrietta fire department arrived onsite and extinguished the fire. A de minimus volume of product was released and there were no indications that product reached the ground. An incident investigation was performed and determined the cause of the failure to be a failure with the run relay. The run status in the plc was a reflection of the run control output status. A stop command from the controller caused the run relay output to drop out, however, the run relay failed and welded in the closed position. This caused the motor starter to not respond to the stop command from the plc system. The suction and discharge valves on the unit closed as expected during the shutdown sequence. The unit continued to operate against the closed valves, increasing the temperature of the product, which ultimately caused the inboard mechanical seal to fail. To prevent future occurrence, the run and stop relay outputs from the mainline starter will be separated. Additionally, emergency shutdown relays will be installed and wired directly into the circuit breaker feeding the motor starter for all active stations on the orion pipeline system. A process will also be developed to evaluate the controls system architecture for all assets owned by the previous operator. Supplemental/final (09-20-2021) part g, h
| Report Received Date | 2021-04-20 00:00:00 |
|---|---|
| Iyear | 2021 |
| Report Number | 20210125 |
| Supplemental Number | 35752 |
| Report Type | Supplemental Final |
| Operator Id | 22610 PHMSA Enforcement |
| Name | Magellan Pipeline Company, Lp |
| Operator Street Address | 100 West 5th Street |
| Operator City Name | Tulsa |
| Operator State Abbreviation | OK |
| Operator Postal Code | 74103 |
| Local Datetime | 2021-03-21 21:52:00 |
| Location Latitude | 33.832361 Google Maps OpenStreetMap |
| Location Longitude | -98.2779 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 | 0.1 |
| Recovered Bbls | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Notification From Public |
| Incident Identified Datetime | 2021-03-21 21:52:00 |
| System Part Involved | Onshore Pump/meter Station Equipment And Piping |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2021-03-21 20:47:00 |
| Restart Datetime | 2021-03-23 18:28:00 |
| On Site Datetime | 2021-03-21 23:16:00 |
| Nrc Rpt Datetime | 2021-03-21 22:25:00 |
| Nrc Rpt Num | 1300946 NRC Report How to search |
| Ignite Ind | Yes |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Henrietta Station |
| Segment Name | Fac Id 737 |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 76365 |
| Onshore City Name | Not Within A Municipality |
| Onshore County Name | Clay |
| Designated Location | Milepost/valve Station |
| Designated Name | 0 |
| 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 |
| Installation Year | 1997 |
| Material Involved | Carbon Steel |
| 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 | 31 |
| Est Cost Prop Damage | 275000 |
| Est Cost Emergency | 18046 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 293077 |
| Accident Psig | 400 |
| 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 | Release was below detectable thresholds within cpm/scada systems. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Other Equipment Failure |
| Eq Failure Type | Other Equipment Failure |
| Failure Details | Relay Failure |
| Additional Alarm Ind | Yes |
| Preparer Name | S****** L****** |
| Preparer Title | Ai Analyst |
| Preparer Email | S**************@m*********.com |
| Preparer Telephone | 918-574-7327 |
| Preparer Fax | 918-574-7376 |
| Prepared Date | 2021-09-20 00:00:00 |
| Authorizer Name | G**** R**** |
| Authorizer Telephone | 918-574-7165 |
| Authorizer Title | Supervisor Integrity Management |
| Authorizer Email | G**********@m*********.com |
| Narrative | At 20:52 on march 21st, 2021, magellan operations control initiated a stop command for the henrietta unit. The unit continued to show a run status and a magellan technician was immediately dispatched to troubleshoot the issue. At 21:52, operations control received a call from a 3rd party reporting a fire at the henrietta pump station. A code red event was initiated and the henrietta fire department arrived onsite and extinguished the fire. A de minimus volume of product was released and there were no indications that product reached the ground. An incident investigation was performed and determined the cause of the failure to be a failure with the run relay. The run status in the plc was a reflection of the run control output status. A stop command from the controller caused the run relay output to drop out, however, the run relay failed and welded in the closed position. This caused the motor starter to not respond to the stop command from the plc system. The suction and discharge valves on the unit closed as expected during the shutdown sequence. The unit continued to operate against the closed valves, increasing the temperature of the product, which ultimately caused the inboard mechanical seal to fail. To prevent future occurrence, the run and stop relay outputs from the mainline starter will be separated. Additionally, emergency shutdown relays will be installed and wired directly into the circuit breaker feeding the motor starter for all active stations on the orion pipeline system. A process will also be developed to evaluate the controls system architecture for all assets owned by the previous operator. Supplemental/final (09-20-2021) part g, h |
External Resources
PHMSA pipeline safety insights.
Product
Features
Company
All rights reserved. Copyright © by ClearPHMSA