Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2024-10-29 — TX
Operator
Mid - Valley Pipeline Co
Cause
Incorrect Operation
Commodity
Crude Oil
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$0
Incident datetime
2024-10-29 00:00 UTC
Report number
Location
TX
Narrative
On 10/04/24 at approximately 18:00, a small flash fire occurred at lima mvpl terminal while welding to install a fabricated assembly in order to affect a pressure test the 20-inch ashland spur line. Tack welds were completed on the assembly and as contract crew was beginning the weld root pass a small flash occurred due to vapors passing mud plug. Line is non-piggable and dependent on drain up to evacuate line. Operations held a safety stand down after the flashfire. Cold cut tack welds to remove fabricated assembly for inspection and also, inspected the 20-inch spur line. After satisfactory inspection, proceeded with installation of fabricated assembly and pressure test. The investigation determined that the mud plug failed likely due to being installed too far in advance of the welding activities which may have allowed it to dry to an extent that the sealing capabilities were compromised and the plug was made with insufficient thickness for the diameter of pipe. The contractors qualifications were removed and involved individuals are being retrained.
Detailed record list
Report Received Date
2024-10-29 00:00:00
Iyear
2024
Report Number
20240259
Supplemental Number
40280
Report Type
Supplemental Final
Operator Id
12470
Name
Mid - Valley Pipeline Co
Operator Street Address
1300 Main Street
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Time Zone
Eastern
Daylight Savings Ind
Yes
Location Latitude
40.70502
Location Longitude
-84.12333
Commodity Released Type
Crude Oil
Unintentional Release Bbls
0.1
Recovered Bbls
0.1
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Contractor Working For The Operator
System Part Involved
Onshore Terminal/tank Farm Equipment And Piping
On Off Shore
Onshore
Status When Identified
Normal Operation, Includes Pauses Between Batches And During Maintenance
Shutdown Due Accident Ind
No
Shutdown Explain
Already Shutdown
Communication State Fed Ind
No
Nrc Rpt Num
1412849
Additional Nrc Report Numbers
1412985
Ignite Ind
Yes
How Extinguished
Allowed To Burn Out
Consumed By Fire In Barrels
0.1
Explode Ind
No
Notify Qualified Indiv Ind
Yes
Oil Spill Removal Org Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Lima Station
Segment Name
28008 - 20-Inch Ashland Spur Line
Onshore State Abbreviation
Oh
Onshore Postal Code
45804
Onshore City Name
Not Within A Municipality
Onshore County Name
Allen
Designated Location
Survey Station No.
Designated Name
0+00
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
Other
Item Involved Details
Isolation Mud Plug
Installation Year
2024
Manufactured Year
Unknown
Material Involved
Material Other Than Carbon Steel
Material Details
Bentonite Mud Plug
Release Type
Other
Release Type Details
Flash Fire Due To Hydrocarbon Vapors Passing By Isolation Mud Plug
Wildlife Impact Ind
No
Soil Contamination
No
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
Est Cost Oper Paid
0
Est Cost Gas Released
1
Est Cost Prop Damage
0
Est Cost Emergency
1000
Est Cost Environmental
0
Est Cost Other
0
Prpty
1001
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Accident Psig
0
Mop Psig
275
Mop Cfr Section
Component Design Pressure �195.406(A)(2)
Maop Established Date
1985-11-14 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
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
A review of the accident determined that there were no control room actions that contributed to the event.
Employee Drug Test Ind
No
Contractor Drug Test Ind
Yes
Num Contractors Tested
5
Num Contractors Failed
0
Cause
Incorrect Operation
Cause Details
Equipment Not Installed Properly
Operation Type
Equipment Not Installed Properly
Related Failure Follow Ind
Yes
Category Type
Other Maintenance
Operator Qualification Ind
Yes
Qualified Individuals
Yes, They Were Qualified For The Task(S)
Preparer Name
T*** N*******
Preparer Title
Director - Dot Compliance
Preparer Email
T************@e*************.com
Preparer Telephone
713-989-7126
Prepared Date
2024-12-04 00:00:00
Authorizer Name
T*** N*******
Authorizer Telephone
713-989-7126
Authorizer Title
Director - Dot Compliance
Authorizer Email
T************@e*************.com
Narrative
On 10/04/24 at approximately 18:00, a small flash fire occurred at lima mvpl terminal while welding to install a fabricated assembly in order to affect a pressure test the 20-inch ashland spur line. Tack welds were completed on the assembly and as contract crew was beginning the weld root pass a small flash occurred due to vapors passing mud plug. Line is non-piggable and dependent on drain up to evacuate line. Operations held a safety stand down after the flashfire. Cold cut tack welds to remove fabricated assembly for inspection and also, inspected the 20-inch spur line. After satisfactory inspection, proceeded with installation of fabricated assembly and pressure test. The investigation determined that the mud plug failed likely due to being installed too far in advance of the welding activities which may have allowed it to dry to an extent that the sealing capabilities were compromised and the plug was made with insufficient thickness for the diameter of pipe. The contractors qualifications were removed and involved individuals are being retrained.
| Report Received Date | 2024-10-29 00:00:00 |
|---|---|
| Iyear | 2024 |
| Report Number | 20240259 |
| Supplemental Number | 40280 |
| Report Type | Supplemental Final |
| Operator Id | 12470 PHMSA Enforcement |
| Name | Mid - Valley Pipeline Co |
| Operator Street Address | 1300 Main Street |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77002 |
| Time Zone | Eastern |
| Daylight Savings Ind | Yes |
| Location Latitude | 40.70502 Google Maps OpenStreetMap |
| Location Longitude | -84.12333 Google Maps OpenStreetMap |
| Commodity Released Type | Crude Oil |
| Unintentional Release Bbls | 0.1 |
| Recovered Bbls | 0.1 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Contractor Working For The Operator |
| System Part Involved | Onshore Terminal/tank Farm Equipment And Piping |
| On Off Shore | Onshore |
| Status When Identified | Normal Operation, Includes Pauses Between Batches And During Maintenance |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | Already Shutdown |
| Communication State Fed Ind | No |
| Nrc Rpt Num | 1412849 NRC Report How to search |
| Additional Nrc Report Numbers | 1412985 |
| Ignite Ind | Yes |
| How Extinguished | Allowed To Burn Out |
| Consumed By Fire In Barrels | 0.1 |
| Explode Ind | No |
| Notify Qualified Indiv Ind | Yes |
| Oil Spill Removal Org Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Lima Station |
| Segment Name | 28008 - 20-Inch Ashland Spur Line |
| Onshore State Abbreviation | Oh |
| Onshore Postal Code | 45804 |
| Onshore City Name | Not Within A Municipality |
| Onshore County Name | Allen |
| Designated Location | Survey Station No. |
| Designated Name | 0+00 |
| 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 | Other |
| Item Involved Details | Isolation Mud Plug |
| Installation Year | 2024 |
| Manufactured Year | Unknown |
| Material Involved | Material Other Than Carbon Steel |
| Material Details | Bentonite Mud Plug |
| Release Type | Other |
| Release Type Details | Flash Fire Due To Hydrocarbon Vapors Passing By Isolation Mud Plug |
| Wildlife Impact Ind | No |
| Soil Contamination | No |
| 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 |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 1 |
| Est Cost Prop Damage | 0 |
| Est Cost Emergency | 1000 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 1001 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Accident Psig | 0 |
| Mop Psig | 275 |
| Mop Cfr Section | Component Design Pressure �195.406(A)(2) View CFR 49 §192 |
| Maop Established Date | 1985-11-14 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 | 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 | A review of the accident determined that there were no control room actions that contributed to the event. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | Yes |
| Num Contractors Tested | 5 |
| Num Contractors Failed | 0 |
| Cause | Incorrect Operation |
| Cause Details | Equipment Not Installed Properly |
| Operation Type | Equipment Not Installed Properly |
| Related Failure Follow Ind | Yes |
| Category Type | Other Maintenance |
| Operator Qualification Ind | Yes |
| Qualified Individuals | Yes, They Were Qualified For The Task(S) |
| Preparer Name | T*** N******* |
| Preparer Title | Director - Dot Compliance |
| Preparer Email | T************@e*************.com |
| Preparer Telephone | 713-989-7126 |
| Prepared Date | 2024-12-04 00:00:00 |
| Authorizer Name | T*** N******* |
| Authorizer Telephone | 713-989-7126 |
| Authorizer Title | Director - Dot Compliance |
| Authorizer Email | T************@e*************.com |
| Narrative | On 10/04/24 at approximately 18:00, a small flash fire occurred at lima mvpl terminal while welding to install a fabricated assembly in order to affect a pressure test the 20-inch ashland spur line. Tack welds were completed on the assembly and as contract crew was beginning the weld root pass a small flash occurred due to vapors passing mud plug. Line is non-piggable and dependent on drain up to evacuate line. Operations held a safety stand down after the flashfire. Cold cut tack welds to remove fabricated assembly for inspection and also, inspected the 20-inch spur line. After satisfactory inspection, proceeded with installation of fabricated assembly and pressure test. The investigation determined that the mud plug failed likely due to being installed too far in advance of the welding activities which may have allowed it to dry to an extent that the sealing capabilities were compromised and the plug was made with insufficient thickness for the diameter of pipe. The contractors qualifications were removed and involved individuals are being retrained. |
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