Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2020-10-31 — 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)
$350
Incident datetime
2020-10-31 22:50
Report number
Location
OK
Narrative
At 22:50 on october 31, 2020 magellan operations personnel discovered product leaking from a cracked nipple on a sample port. While isolating the line, the nipple completely failed and additional product was released. Metallurgical analysis indicates that the nipple failure occurred in stages. Corrosion occurred at the root of the thread and an unknown event caused a partial fracture of the nipple. This initial fracture was exposed to the environment and additional corrosion occurred at the fracture surface. The final brittle fracture of the nipple occurred just before or when the operator attempted to shut the valve on october 31st. No evidence of fatigue crack growth was found. Supplemental/final 2/16/2021- updated g6, part h.
Detailed record list
Report Received Date
2020-11-30 00:00:00
Iyear
2020
Report Number
20200322
Supplemental Number
34866
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
2020-10-31 23:05:00
Location Latitude
44.732898
Location Longitude
-93.19669
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
98
Recovered Bbls
70
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
Incident Identified Datetime
2020-10-31 22:50:00
System Part Involved
Onshore Pump/meter Station Equipment And Piping
On Off Shore
Onshore
Shutdown Due Accident Ind
No
Shutdown Explain
The Pipeline Was Already Shut-In Due To Scheduling Downtime.
On Site Datetime
2020-10-31 22:50:00
Nrc Rpt Datetime
2020-10-31 23:24:00
Nrc Rpt Num
1291157
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Rosemount
Segment Name
Rosemount - Willmar #6-12in/ Id 6310
Onshore State Abbreviation
Mn
Onshore Postal Code
55124
Onshore City Name
Apple Valley
Onshore County Name
Dakota
Designated Location
Milepost/valve Station
Designated Name
0
Federal
No
Location Type
Originated On Operator-Controlled Property, But Then Flowed Or Migrated Off The Property
Incident Area Type
Aboveground
Incident Area Subtype
Typical Aboveground Facility Piping Or Appurtenance
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Other
Item Involved Details
1/2" Pipe Nipple
Installation Year
1960
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Crack
Wildlife Impact Ind
No
Soil Contamination
Yes
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
Usa Drinking Ind
Yes
Usa Drinking Yes No
Yes
Est Cost Oper Paid
0
Est Cost Gas Released
4385
Est Cost Prop Damage
350
Est Cost Emergency
145000
Est Cost Environmental
0
Est Cost Other
0
Prpty
149735
Accident Psig
281
Mop Psig
1186
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
The release was below detectable thresholds within the scada/cpm systems.
Employee Drug Test Ind
Yes
Contractor Drug Test Ind
No
Num Employees Tested
1
Num Employees Failed
0
Cause
Equipment Failure
Cause Details
Threaded Connection/coupling Failure
Eq Failure Type
Threaded Connection/coupling Failure
Other Stripped Ind
Pipe Nipple
Eq Additional Other Ind
Yes
Eq Additional Other Details
Corroded Threading
Preparer Name
S****** L******
Preparer Title
Ai Analyst
Preparer Email
S**************@m*********.com
Preparer Telephone
9185747327
Preparer Fax
918-574-7376
Prepared Date
2021-02-16 00:00:00
Authorizer Name
G**** R****
Authorizer Telephone
918-574-7165
Authorizer Title
Supervisor Integrity Management
Authorizer Email
G**********@m*********.com
Narrative
At 22:50 on october 31, 2020 magellan operations personnel discovered product leaking from a cracked nipple on a sample port. While isolating the line, the nipple completely failed and additional product was released. Metallurgical analysis indicates that the nipple failure occurred in stages. Corrosion occurred at the root of the thread and an unknown event caused a partial fracture of the nipple. This initial fracture was exposed to the environment and additional corrosion occurred at the fracture surface. The final brittle fracture of the nipple occurred just before or when the operator attempted to shut the valve on october 31st. No evidence of fatigue crack growth was found. Supplemental/final 2/16/2021- updated g6, part h.
| Report Received Date | 2020-11-30 00:00:00 |
|---|---|
| Iyear | 2020 |
| Report Number | 20200322 |
| Supplemental Number | 34866 |
| 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 | 2020-10-31 23:05:00 |
| Location Latitude | 44.732898 Google Maps OpenStreetMap |
| Location Longitude | -93.19669 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 | 98 |
| Recovered Bbls | 70 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| Incident Identified Datetime | 2020-10-31 22:50:00 |
| System Part Involved | Onshore Pump/meter Station Equipment And Piping |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | The Pipeline Was Already Shut-In Due To Scheduling Downtime. |
| On Site Datetime | 2020-10-31 22:50:00 |
| Nrc Rpt Datetime | 2020-10-31 23:24:00 |
| Nrc Rpt Num | 1291157 NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Rosemount |
| Segment Name | Rosemount - Willmar #6-12in/ Id 6310 |
| Onshore State Abbreviation | Mn |
| Onshore Postal Code | 55124 |
| Onshore City Name | Apple Valley |
| Onshore County Name | Dakota |
| Designated Location | Milepost/valve Station |
| Designated Name | 0 |
| Federal | No |
| Location Type | Originated On Operator-Controlled Property, But Then Flowed Or Migrated Off The Property |
| Incident Area Type | Aboveground |
| Incident Area Subtype | Typical Aboveground Facility Piping Or Appurtenance |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Other |
| Item Involved Details | 1/2" Pipe Nipple |
| Installation Year | 1960 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Crack |
| Wildlife Impact Ind | No |
| Soil Contamination | Yes |
| 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 |
| Usa Drinking Ind | Yes |
| Usa Drinking Yes No | Yes |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 4385 |
| Est Cost Prop Damage | 350 |
| Est Cost Emergency | 145000 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 149735 |
| Accident Psig | 281 |
| Mop Psig | 1186 |
| 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 | The release was below detectable thresholds within the scada/cpm systems. |
| Employee Drug Test Ind | Yes |
| Contractor Drug Test Ind | No |
| Num Employees Tested | 1 |
| Num Employees Failed | 0 |
| Cause | Equipment Failure |
| Cause Details | Threaded Connection/coupling Failure |
| Eq Failure Type | Threaded Connection/coupling Failure |
| Other Stripped Ind | Pipe Nipple |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | Corroded Threading |
| Preparer Name | S****** L****** |
| Preparer Title | Ai Analyst |
| Preparer Email | S**************@m*********.com |
| Preparer Telephone | 9185747327 |
| Preparer Fax | 918-574-7376 |
| Prepared Date | 2021-02-16 00:00:00 |
| Authorizer Name | G**** R**** |
| Authorizer Telephone | 918-574-7165 |
| Authorizer Title | Supervisor Integrity Management |
| Authorizer Email | G**********@m*********.com |
| Narrative | At 22:50 on october 31, 2020 magellan operations personnel discovered product leaking from a cracked nipple on a sample port. While isolating the line, the nipple completely failed and additional product was released. Metallurgical analysis indicates that the nipple failure occurred in stages. Corrosion occurred at the root of the thread and an unknown event caused a partial fracture of the nipple. This initial fracture was exposed to the environment and additional corrosion occurred at the fracture surface. The final brittle fracture of the nipple occurred just before or when the operator attempted to shut the valve on october 31st. No evidence of fatigue crack growth was found. Supplemental/final 2/16/2021- updated g6, part h. |
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