Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2023-11-29 — OK
Operator
Mid-Continent Fractionation And Storage, L.l.c.
Cause
Corrosion 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)
$1,000,000
Incident datetime
2023-11-29 00:00 UTC
Report number
Location
OK
Narrative
11/2 8:40am environmental specialist noticed a frost ball in the area and contacted supervisor who confirmed the leak as of 9:20am by use of hazgas monitor. Line segment was isolated shortly thereafter (~9:40am) and open to flare system in which remaining product in line was flared off. Extent of damage was ~10 feet in length with pin hole corrosion as primary cause of release. 3/19/2024 line was put back into service was damage segment was replaced with new pipe.
Detailed record list
Report Received Date
2023-11-29 00:00:00
Iyear
2023
Report Number
20230287
Supplemental Number
39426
Report Type
Supplemental Final
Operator Id
31816
Name
Mid-Continent Fractionation And Storage, L.l.c.
Operator Street Address
One Williams Center P.o. Box 645
Operator City Name
Tulsa
Operator State Abbreviation
OK
Operator Postal Code
74172
Time Zone
Central
Daylight Savings Ind
No
Location Latitude
38.370282
Location Longitude
-98.075563
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
23
Intentional Release Bbls
93
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
System Part Involved
Onshore Pipeline, Including Valve Sites
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
No
Nrc Rpt Num
1383265
Additional Nrc Report Numbers
48 Hour Follow Up - 1383399
Ignite Ind
No
Upstream Action Taken
Valve Closure
Upstream Valve Type Ind
Manual
Downstream Action Taken
Valve Closure
Downstream Valve Type Ind
Remotely Controlled
Num Pub Evacuated
0
Pipe Fac Name
Trunk C4 And C21-23 Lateral
Segment Name
843-T-T-T
Onshore State Abbreviation
Ks
Onshore Postal Code
66901
Onshore City Name
Not Within A Municipality
Onshore County Name
Rice
Designated Location
Survey Station No.
Designated Name
1+50
Federal
No
Location Type
Totally Contained On Operator-Controlled Property
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
108
Crossing
No
Pipe Facility Type
Intrastate
Item Involved
Pipe
Pipe Type
Pipe Body
Puddle Weld Ind
No
Pipe Diameter
8
Pipe Wall Thickness
0.188
Pipe Smys
35000
Pipe Specification
5l
Pipe Seam Type
Erw - High Frequency
Pipe Manufacturer
Unknown
Pipe Coating Type
Cold Applied Tape
Coating Applied Ind
Yes
Installation Year
Unknown
Manufactured Year
Unknown
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Pinhole
Wildlife Impact Ind
No
Soil Contamination
Yes
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
1000
Est Cost Prop Damage
1000000
Est Cost Emergency
1400
Est Cost Environmental
2000
Est Cost Other
0
Prpty
1004400
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Accident Psig
438
Mop Psig
740
Mop Cfr Section
Component Design Pressure �195.406(A)(2)
Maop Established Date
2012-06-14 00:00:00
Maop Reversal Flow Ind
No
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
1500
Internal Inspection Ind
No
Other Inspection Ind
Yes
Internal Inspection Details
Station Piping. Ili Tool Accommodation Is Not Required.
Operation Complications 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
Controller's action in this accident could not be a contributing factor as no alarms or alerts occurred requiring a response from the controller.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Corrosion Failure
Cause Details
External Corrosion
Internal External
External Corrosion
Visual Exam Results
Localized Pitting
Galvanic Corrosion Ind
Yes
Field Exam Basis Ind
Yes
Underground Location
Yes
Under Cathodic Protection Ind
Yes
Cathodic Pro Start Year
2005
Shielding Evident
Yes
Cathodic Survey Type
Yes
Cp Annual Survey Ind
Yes
Cp Annual Survey Year
2023
Prior Damage
Yes
Collected Data Ind
No
Has Hydrtst Conduc Before Ind
Yes
Hydrtst Most Rcnt Year
2012
Hydrtst Most Rcnt Pressure
1073
Direct Asmnt Conducted
No
Non Destructive Exam Ind
No
Pwf Construction Ind
Yes
Preparer Name
L***** H***
Preparer Title
Pipeline Safety Manager
Preparer Email
L**********@w*******.com
Preparer Telephone
9182404259
Prepared Date
2024-04-11 00:00:00
Local Contact Name
B**** S*****
Local Contact Email
B***********@w*******.com
Local Contact Telephone
6208342140
Authorizer Name
L***** H***
Authorizer Telephone
9182404259
Authorizer Title
Pipeline Safety Manager
Authorizer Email
L**********@w*******.com
Narrative
11/2 8:40am environmental specialist noticed a frost ball in the area and contacted supervisor who confirmed the leak as of 9:20am by use of hazgas monitor. Line segment was isolated shortly thereafter (~9:40am) and open to flare system in which remaining product in line was flared off. Extent of damage was ~10 feet in length with pin hole corrosion as primary cause of release. 3/19/2024 line was put back into service was damage segment was replaced with new pipe.
| Report Received Date | 2023-11-29 00:00:00 |
|---|---|
| Iyear | 2023 |
| Report Number | 20230287 |
| Supplemental Number | 39426 |
| Report Type | Supplemental Final |
| Operator Id | 31816 PHMSA Enforcement |
| Name | Mid-Continent Fractionation And Storage, L.l.c. |
| Operator Street Address | One Williams Center P.o. Box 645 |
| Operator City Name | Tulsa |
| Operator State Abbreviation | OK |
| Operator Postal Code | 74172 |
| Time Zone | Central |
| Daylight Savings Ind | No |
| Location Latitude | 38.370282 Google Maps OpenStreetMap |
| Location Longitude | -98.075563 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 | 23 |
| Intentional Release Bbls | 93 |
| Recovered Bbls | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| 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 | No |
| Nrc Rpt Num | 1383265 NRC Report How to search |
| Additional Nrc Report Numbers | 48 Hour Follow Up - 1383399 |
| Ignite Ind | No |
| Upstream Action Taken | Valve Closure |
| Upstream Valve Type Ind | Manual |
| Downstream Action Taken | Valve Closure |
| Downstream Valve Type Ind | Remotely Controlled |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Trunk C4 And C21-23 Lateral |
| Segment Name | 843-T-T-T |
| Onshore State Abbreviation | Ks |
| Onshore Postal Code | 66901 |
| Onshore City Name | Not Within A Municipality |
| Onshore County Name | Rice |
| Designated Location | Survey Station No. |
| Designated Name | 1+50 |
| Federal | No |
| Location Type | Totally Contained On Operator-Controlled Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 108 |
| Crossing | No |
| Pipe Facility Type | Intrastate |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Puddle Weld Ind | No |
| Pipe Diameter | 8 |
| Pipe Wall Thickness | 0.188 |
| Pipe Smys | 35000 |
| Pipe Specification | 5l |
| Pipe Seam Type | Erw - High Frequency |
| Pipe Manufacturer | Unknown |
| Pipe Coating Type | Cold Applied Tape |
| Coating Applied Ind | Yes |
| Installation Year | Unknown |
| Manufactured Year | Unknown |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Pinhole |
| Wildlife Impact Ind | No |
| Soil Contamination | Yes |
| 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 | 1000 |
| Est Cost Prop Damage | 1000000 |
| Est Cost Emergency | 1400 |
| Est Cost Environmental | 2000 |
| Est Cost Other | 0 |
| Prpty | 1004400 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Accident Psig | 438 |
| Mop Psig | 740 |
| Mop Cfr Section | Component Design Pressure �195.406(A)(2) View CFR 49 §192 |
| Maop Established Date | 2012-06-14 00:00:00 |
| Maop Reversal Flow Ind | No |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 1500 |
| Internal Inspection Ind | No |
| Other Inspection Ind | Yes |
| Internal Inspection Details | Station Piping. Ili Tool Accommodation Is Not Required. |
| Operation Complications 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 | Controller's action in this accident could not be a contributing factor as no alarms or alerts occurred requiring a response from the controller. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Corrosion Failure |
| Cause Details | External Corrosion |
| Internal External | External Corrosion |
| Visual Exam Results | Localized Pitting |
| Galvanic Corrosion Ind | Yes |
| Field Exam Basis Ind | Yes |
| Underground Location | Yes |
| Under Cathodic Protection Ind | Yes |
| Cathodic Pro Start Year | 2005 |
| Shielding Evident | Yes |
| Cathodic Survey Type | Yes |
| Cp Annual Survey Ind | Yes |
| Cp Annual Survey Year | 2023 |
| Prior Damage | Yes |
| Collected Data Ind | No |
| Has Hydrtst Conduc Before Ind | Yes |
| Hydrtst Most Rcnt Year | 2012 |
| Hydrtst Most Rcnt Pressure | 1073 |
| Direct Asmnt Conducted | No |
| Non Destructive Exam Ind | No |
| Pwf Construction Ind | Yes |
| Preparer Name | L***** H*** |
| Preparer Title | Pipeline Safety Manager |
| Preparer Email | L**********@w*******.com |
| Preparer Telephone | 9182404259 |
| Prepared Date | 2024-04-11 00:00:00 |
| Local Contact Name | B**** S***** |
| Local Contact Email | B***********@w*******.com |
| Local Contact Telephone | 6208342140 |
| Authorizer Name | L***** H*** |
| Authorizer Telephone | 9182404259 |
| Authorizer Title | Pipeline Safety Manager |
| Authorizer Email | L**********@w*******.com |
| Narrative | 11/2 8:40am environmental specialist noticed a frost ball in the area and contacted supervisor who confirmed the leak as of 9:20am by use of hazgas monitor. Line segment was isolated shortly thereafter (~9:40am) and open to flare system in which remaining product in line was flared off. Extent of damage was ~10 feet in length with pin hole corrosion as primary cause of release. 3/19/2024 line was put back into service was damage segment was replaced with new pipe. |
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