Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2023-08-04 — TX
Operator
Mid - Valley Pipeline Co
Cause
Material Failure Of Pipe Or Weld
Commodity
Crude Oil
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$155,000
Incident datetime
2023-08-04 00:00 UTC
Report number
Location
TX
Narrative
On 7/5/23 at approximately 16:18 et the control center received a line imbalance alarm and began shutting the pipeline down. Investigation into the alarm began while the line was setup for a static pressure test to confirm integrity. Aerial patrol was initiated, and the static test was completed with no indication of a release. The line imbalance was believed to be due to a measurement issue. The line was cleared for restart at approximately 21:04. At approximately 22:00 aerial patrol identified a stain on row north of cygnet. Line was shutdown again at approximately 22:04. Approximately 2 barrels of crude oil released to the soil. Oil spill response contractors were mobilized to cleanup released product. A plidco clamp was installed on 7/6/23 and the line was restarted on 7/7/23. After ili assessment the failed section will be cut out and replaced. The failed section will be analyzed for cause and a supplemental report will be filed. Supplemental: the failed section of pipe was cut out and replaced in january 2024. The failed section was sent for metallurgical analysis. The cause of the failure was determined by metallurgical analysis to be a leak located at a colony of axially oriented, interlinked near neutral ph stress corrosion cracks that were located at an area of externa corrosion and a dent. An ultrasonic crack tool ili assessment was conducted in december 2023. Tool data will be reviewed for similar issues once received and remedial measures taken accordingly.
Detailed record list
Report Received Date
2023-08-04 00:00:00
Iyear
2023
Report Number
20230178
Supplemental Number
39337
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
41.29919
Location Longitude
-83.61619
Commodity Released Type
Crude Oil
Unintentional Release Bbls
2
Recovered Bbls
2
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 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
Yes
Party Initiated Communication
Operator
Nrc Rpt Num
1372213
Additional Nrc Report Numbers
1372326
Ignite Ind
No
Upstream Action Taken
Valve Closure
Upstream Valve Type Ind
Remotely Controlled
Downstream Action Taken
Valve Closure
Downstream Valve Type Ind
Manual
Notify Qualified Indiv Ind
Yes
Oil Spill Removal Org Ind
Yes
Osro Arrived On Site Dt
7/5/2023 23:30
Num Pub Evacuated
0
Pipe Fac Name
Mid Valley Pipeline
Segment Name
28003.02 Cygnet To Samaria 22-Inch
Onshore State Abbreviation
Oh
Onshore Postal Code
43413
Onshore City Name
Cygnet
Onshore County Name
Wood
Designated Location
Milepost
Designated Name
51
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
42
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Pipe
Pipe Type
Pipe Body
Puddle Weld Ind
No
Pipe Diameter
22
Pipe Wall Thickness
0.344
Pipe Smys
35000
Pipe Specification
Grade B
Pipe Seam Type
Seamless
Pipe Manufacturer
Unknown
Pipe Coating Type
Asphalt
Coating Applied Ind
Unknown
Installation Year
1949
Manufactured Year
Unknown
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Crack
Wildlife Impact Ind
No
Soil Contamination
Yes
Long Term Assessment
No
Remediation Ind
Yes
Soil Remed Ind
Yes
Water Contam Ind
No
Could Be Hca
No
Commodity Reached Hca
No
Est Cost Oper Paid
25000
Est Cost Gas Released
150
Est Cost Prop Damage
155000
Est Cost Emergency
200000
Est Cost Environmental
29000
Est Cost Other
2055
Est Cost Other Details
Aerial Patrol To Locate Release
Prpty
411205
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Accident Psig
200
Mop Psig
788
Mop Cfr Section
Internal Design Pressure �195.406(A)(1)
Maop Established Date
1969-04-23 00:00:00
Maop Reversal Flow Ind
No
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
5450
Internal Inspection Ind
Yes
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
Yes
Scada Conf Ind
Yes
Cpm In Place Ind
Yes
Cpm Operating Ind
Yes
Cpm Functional Ind
Yes
Cpm Detection Ind
Yes
Cpm Conf Ind
Yes
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
No
Cause
Material Failure Of Pipe Or Weld
Cause Details
Environmental Cracking-Related
Metallurgical Ind
Yes
Failure Type
Environmental Cracking-Related
Stress Subtype
Stress Corrosion Cracking
Additional Dent Ind
Yes
Pwf Additional Other Ind
Yes
Collected Data Ind
Yes
Axial Magnetic Flx Lkg Ind
Yes
Ultrasonic Ind
Yes
Geometry Deformation Ind
Yes
Axial Recent Year
2018
Axial Rcnt Propul Method
Free Swimming
Axial Rcnt Attuned Detect
Metal Loss
Axial Rcnt Atnd Dtct Metal
High Resolution
Axial Previous Year
2014
Axial Prev Propul Method
Free Swimming
Axial Prev Attuned Detect
Metal Loss
Axial Prev Atnd Dtct Metal
High Resolution
Ultrasonic Recent Year
2016
Ultrasonic Rcnt Propul Method
Free Swimming
Ultrasonic Rcnt Attuned
Crack
Geometry Recent Year
2018
Geometry Rcnt Propul Method
Free Swimming
Geometry Rcnt Resolution
High Resolution
Geometrt Rcnt Measur Cups
No Cups
Geometry Previous Year
2014
Geometry Prev Propul Method
Free Swimming
Geometry Prev Resolution
High Resolution
Geometrt Prev Measur Cups
No Cups
Has Hydrtst Conduc Before Ind
Yes
Hydrtst Most Rcnt Year
1969
Hydrtst Most Rcnt Pressure
994
Direct Asmnt Conducted
No
Non Destructive Exam Ind
No
Extrnl Cor Galvanic Ind
Yes
Preparer Name
T*** N*******
Preparer Title
Director - Dot Compliance
Preparer Email
T************@e*************.com
Preparer Telephone
713-989-7126
Prepared Date
2024-03-18 00:00:00
Authorizer Name
T*** N*******
Authorizer Telephone
713-989-7126
Authorizer Title
Director - Dot Compliance
Authorizer Email
T************@e*************.com
Narrative
On 7/5/23 at approximately 16:18 et the control center received a line imbalance alarm and began shutting the pipeline down. Investigation into the alarm began while the line was setup for a static pressure test to confirm integrity. Aerial patrol was initiated, and the static test was completed with no indication of a release. The line imbalance was believed to be due to a measurement issue. The line was cleared for restart at approximately 21:04. At approximately 22:00 aerial patrol identified a stain on row north of cygnet. Line was shutdown again at approximately 22:04. Approximately 2 barrels of crude oil released to the soil. Oil spill response contractors were mobilized to cleanup released product. A plidco clamp was installed on 7/6/23 and the line was restarted on 7/7/23. After ili assessment the failed section will be cut out and replaced. The failed section will be analyzed for cause and a supplemental report will be filed. Supplemental: the failed section of pipe was cut out and replaced in january 2024. The failed section was sent for metallurgical analysis. The cause of the failure was determined by metallurgical analysis to be a leak located at a colony of axially oriented, interlinked near neutral ph stress corrosion cracks that were located at an area of externa corrosion and a dent. An ultrasonic crack tool ili assessment was conducted in december 2023. Tool data will be reviewed for similar issues once received and remedial measures taken accordingly.
| Report Received Date | 2023-08-04 00:00:00 |
|---|---|
| Iyear | 2023 |
| Report Number | 20230178 |
| Supplemental Number | 39337 |
| 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 | 41.29919 Google Maps OpenStreetMap |
| Location Longitude | -83.61619 Google Maps OpenStreetMap |
| Commodity Released Type | Crude Oil |
| Unintentional Release Bbls | 2 |
| Recovered Bbls | 2 |
| 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 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 | Yes |
| Party Initiated Communication | Operator |
| Nrc Rpt Num | 1372213 NRC Report How to search |
| Additional Nrc Report Numbers | 1372326 |
| Ignite Ind | No |
| Upstream Action Taken | Valve Closure |
| Upstream Valve Type Ind | Remotely Controlled |
| Downstream Action Taken | Valve Closure |
| Downstream Valve Type Ind | Manual |
| Notify Qualified Indiv Ind | Yes |
| Oil Spill Removal Org Ind | Yes |
| Osro Arrived On Site Dt | 7/5/2023 23:30 |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Mid Valley Pipeline |
| Segment Name | 28003.02 Cygnet To Samaria 22-Inch |
| Onshore State Abbreviation | Oh |
| Onshore Postal Code | 43413 |
| Onshore City Name | Cygnet |
| Onshore County Name | Wood |
| Designated Location | Milepost |
| Designated Name | 51 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 42 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Puddle Weld Ind | No |
| Pipe Diameter | 22 |
| Pipe Wall Thickness | 0.344 |
| Pipe Smys | 35000 |
| Pipe Specification | Grade B |
| Pipe Seam Type | Seamless |
| Pipe Manufacturer | Unknown |
| Pipe Coating Type | Asphalt |
| Coating Applied Ind | Unknown |
| Installation Year | 1949 |
| Manufactured Year | Unknown |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Crack |
| Wildlife Impact Ind | No |
| Soil Contamination | Yes |
| Long Term Assessment | No |
| Remediation Ind | Yes |
| Soil Remed Ind | Yes |
| Water Contam Ind | No |
| Could Be Hca | No |
| Commodity Reached Hca | No |
| Est Cost Oper Paid | 25000 |
| Est Cost Gas Released | 150 |
| Est Cost Prop Damage | 155000 |
| Est Cost Emergency | 200000 |
| Est Cost Environmental | 29000 |
| Est Cost Other | 2055 |
| Est Cost Other Details | Aerial Patrol To Locate Release |
| Prpty | 411205 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Accident Psig | 200 |
| Mop Psig | 788 |
| Mop Cfr Section | Internal Design Pressure �195.406(A)(1) View CFR 49 §192 |
| Maop Established Date | 1969-04-23 00:00:00 |
| Maop Reversal Flow Ind | No |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 5450 |
| Internal Inspection Ind | Yes |
| 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 | Yes |
| Scada Conf Ind | Yes |
| Cpm In Place Ind | Yes |
| Cpm Operating Ind | Yes |
| Cpm Functional Ind | Yes |
| Cpm Detection Ind | Yes |
| Cpm Conf Ind | Yes |
| 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 | No |
| Cause | Material Failure Of Pipe Or Weld |
| Cause Details | Environmental Cracking-Related |
| Metallurgical Ind | Yes |
| Failure Type | Environmental Cracking-Related |
| Stress Subtype | Stress Corrosion Cracking |
| Additional Dent Ind | Yes |
| Pwf Additional Other Ind | Yes |
| Collected Data Ind | Yes |
| Axial Magnetic Flx Lkg Ind | Yes |
| Ultrasonic Ind | Yes |
| Geometry Deformation Ind | Yes |
| Axial Recent Year | 2018 |
| Axial Rcnt Propul Method | Free Swimming |
| Axial Rcnt Attuned Detect | Metal Loss |
| Axial Rcnt Atnd Dtct Metal | High Resolution |
| Axial Previous Year | 2014 |
| Axial Prev Propul Method | Free Swimming |
| Axial Prev Attuned Detect | Metal Loss |
| Axial Prev Atnd Dtct Metal | High Resolution |
| Ultrasonic Recent Year | 2016 |
| Ultrasonic Rcnt Propul Method | Free Swimming |
| Ultrasonic Rcnt Attuned | Crack |
| Geometry Recent Year | 2018 |
| Geometry Rcnt Propul Method | Free Swimming |
| Geometry Rcnt Resolution | High Resolution |
| Geometrt Rcnt Measur Cups | No Cups |
| Geometry Previous Year | 2014 |
| Geometry Prev Propul Method | Free Swimming |
| Geometry Prev Resolution | High Resolution |
| Geometrt Prev Measur Cups | No Cups |
| Has Hydrtst Conduc Before Ind | Yes |
| Hydrtst Most Rcnt Year | 1969 |
| Hydrtst Most Rcnt Pressure | 994 |
| Direct Asmnt Conducted | No |
| Non Destructive Exam Ind | No |
| Extrnl Cor Galvanic Ind | Yes |
| Preparer Name | T*** N******* |
| Preparer Title | Director - Dot Compliance |
| Preparer Email | T************@e*************.com |
| Preparer Telephone | 713-989-7126 |
| Prepared Date | 2024-03-18 00:00:00 |
| Authorizer Name | T*** N******* |
| Authorizer Telephone | 713-989-7126 |
| Authorizer Title | Director - Dot Compliance |
| Authorizer Email | T************@e*************.com |
| Narrative | On 7/5/23 at approximately 16:18 et the control center received a line imbalance alarm and began shutting the pipeline down. Investigation into the alarm began while the line was setup for a static pressure test to confirm integrity. Aerial patrol was initiated, and the static test was completed with no indication of a release. The line imbalance was believed to be due to a measurement issue. The line was cleared for restart at approximately 21:04. At approximately 22:00 aerial patrol identified a stain on row north of cygnet. Line was shutdown again at approximately 22:04. Approximately 2 barrels of crude oil released to the soil. Oil spill response contractors were mobilized to cleanup released product. A plidco clamp was installed on 7/6/23 and the line was restarted on 7/7/23. After ili assessment the failed section will be cut out and replaced. The failed section will be analyzed for cause and a supplemental report will be filed. Supplemental: the failed section of pipe was cut out and replaced in january 2024. The failed section was sent for metallurgical analysis. The cause of the failure was determined by metallurgical analysis to be a leak located at a colony of axially oriented, interlinked near neutral ph stress corrosion cracks that were located at an area of externa corrosion and a dent. An ultrasonic crack tool ili assessment was conducted in december 2023. Tool data will be reviewed for similar issues once received and remedial measures taken accordingly. |
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