Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2021-10-23 — TX
Operator
Dixie Pipeline Company Llc
Cause
Material Failure Of Pipe Or Weld
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)
$300,000
Incident datetime
2021-10-23 10:44
Report number
Location
TX
Narrative
On may 23, 2021 at 09:05, enterprise houston control center (hcc) received a call from a landowner in seale, alabama reporting ice on the ground with a smell. At 10:44 enterprise confirmed a leak at mp 23.625 on the pipeline right-of-way and immediately isolated the section of pipeline. Enterprise determined the event to be reportable at 11:20 and reported to the nrc at 11:59. The pipeline was pigged to remove product from the pipeline and purged with nitrogen. A 70 feet section of mainline pipe was cut and removed from service. A new section of mainline pipe was pressure tested, installed, purged and returned to service. A 19.27 feet of mainline pipe containing the leak location was examined by metallurgical analysis. The results of the metallurgical analysis indicated that the leak occurred at a colony of interlinked, intergranular cracks consistent with high ph stress corrosion cracking (scc) were located in the base metal, near the seam weld, at the 9:24 orientation. A likely contributing factor to the failure/cracking was residual stresses from the seam welding process based on the presence of the cracking adjacent to the seam weld. The PHMSA accident division was notified on 10/23/2021 at 12:00. The 48-hour update to the nrc took place on 10/25/2021 at 09:16 # 1320339.
Detailed record list
Report Received Date
2021-11-19 00:00:00
Iyear
2021
Report Number
20210328
Supplemental Number
36583
Report Type
Supplemental Final
Operator Id
3445
Name
Dixie Pipeline Company Llc
Operator Street Address
1100 Louisiana St.
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Local Datetime
2021-10-23 09:05:00
Time Zone
Central
Daylight Savings Ind
Yes
Location Latitude
32.340554
Location Longitude
-85.092995
Commodity Released Type
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Commodity Subtype
Other Hvl
Commodity Details
Propane
Unintentional Release Bbls
15
Intentional Release Bbls
868
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Notification From Public
Incident Identified Datetime
2021-10-23 10:44:00
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
Shutdown Datetime
2021-10-23 10:44:00
Restart Datetime
2021-11-01 10:25:00
Communication State Fed Ind
No
On Site Datetime
2021-10-23 10:44:00
Confirmed Discovery Datetime
2021-10-23 10:44:00
Nrc Rpt Datetime
2021-10-23 11:59:00
Nrc Rpt Num
1320220
Additional Nrc Report Numbers
1320339
Ignite Ind
No
Upstream Action Taken
Valve Closure
Upstream Valve Close Datetime
2021-10-23 10:44:00
Upstream Valve Type Ind
Remotely Controlled
Downstream Action Taken
Valve Closure
Downstream Vlv Close Datetime
2021-10-23 10:44:00
Downstream Valve Type Ind
Remotely Controlled
Num Pub Evacuated
0
Pipe Fac Name
Opelika - Alma (Spur Line)
Segment Name
Dixie/119
Onshore State Abbreviation
Al
Onshore Postal Code
36875
Onshore City Name
Seale
Onshore County Name
Russell
Designated Location
Milepost
Designated Name
23.64
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
48
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Pipe
Pipe Type
Pipe Body
Puddle Weld Ind
No
Pipe Diameter
6.625
Pipe Wall Thickness
0.172
Pipe Smys
42000
Pipe Specification
Api-5l
Pipe Seam Type
Erw - High Frequency
Pipe Manufacturer
American Steel
Pipe Coating Type
Coal Tar
Coating Applied Ind
Unknown
Installation Year
1965
Manufactured Year
1965
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Crack
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
58500
Est Cost Prop Damage
300000
Est Cost Emergency
10000
Est Cost Environmental
0
Est Cost Other
0
Prpty
368500
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Accident Psig
425
Mop Psig
1358
Mop Cfr Section
Subpart E Pressure Test �195.406(A)(3)
Maop Established Date
2003-04-30 00:00:00
Maop Reversal Flow Ind
No
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
180365
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
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
This was a crack in the pipeline which caused the leak.
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 Crack Ind
Yes
Collected Data Ind
Yes
Axial Magnetic Flx Lkg Ind
Yes
Axial Recent Year
2020
Axial Rcnt Propul Method
Free Swimming
Axial Rcnt Attuned Detect
Metal Loss
Axial Rcnt Atnd Dtct Metal
Standard Resolution
Axial Previous Year
2015
Axial Prev Propul Method
Free Swimming
Axial Prev Attuned Detect
Metal Loss
Axial Prev Atnd Dtct Metal
Standard Resolution
Has Hydrtst Conduc Before Ind
Yes
Hydrtst Most Rcnt Year
2003
Hydrtst Most Rcnt Pressure
1912
Direct Asmnt Conducted
No
Non Destructive Exam Ind
No
Preparer Name
N***** L* G*** J**
Preparer Title
Senior Pipeline Compliance Specialist
Preparer Email
N****@e****.com
Preparer Telephone
985-493-4629
Prepared Date
2022-04-14 00:00:00
Local Contact Name
N***** L* G*** J**
Local Contact Email
N****@e****.com
Local Contact Telephone
985-493-4629
Authorizer Name
N*** T*****
Authorizer Telephone
713-381-2493
Authorizer Title
Senior Compliance Manager
Authorizer Email
N*******@e****.com
Narrative
On may 23, 2021 at 09:05, enterprise houston control center (hcc) received a call from a landowner in seale, alabama reporting ice on the ground with a smell. At 10:44 enterprise confirmed a leak at mp 23.625 on the pipeline right-of-way and immediately isolated the section of pipeline. Enterprise determined the event to be reportable at 11:20 and reported to the nrc at 11:59. The pipeline was pigged to remove product from the pipeline and purged with nitrogen. A 70 feet section of mainline pipe was cut and removed from service. A new section of mainline pipe was pressure tested, installed, purged and returned to service. A 19.27 feet of mainline pipe containing the leak location was examined by metallurgical analysis. The results of the metallurgical analysis indicated that the leak occurred at a colony of interlinked, intergranular cracks consistent with high ph stress corrosion cracking (scc) were located in the base metal, near the seam weld, at the 9:24 orientation. A likely contributing factor to the failure/cracking was residual stresses from the seam welding process based on the presence of the cracking adjacent to the seam weld. The PHMSA accident division was notified on 10/23/2021 at 12:00. The 48-hour update to the nrc took place on 10/25/2021 at 09:16 # 1320339.
| Report Received Date | 2021-11-19 00:00:00 |
|---|---|
| Iyear | 2021 |
| Report Number | 20210328 |
| Supplemental Number | 36583 |
| Report Type | Supplemental Final |
| Operator Id | 3445 PHMSA Enforcement |
| Name | Dixie Pipeline Company Llc |
| Operator Street Address | 1100 Louisiana St. |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77002 |
| Local Datetime | 2021-10-23 09:05:00 |
| Time Zone | Central |
| Daylight Savings Ind | Yes |
| Location Latitude | 32.340554 Google Maps OpenStreetMap |
| Location Longitude | -85.092995 Google Maps OpenStreetMap |
| Commodity Released Type | Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions |
| Commodity Subtype | Other Hvl |
| Commodity Details | Propane |
| Unintentional Release Bbls | 15 |
| Intentional Release Bbls | 868 |
| Recovered Bbls | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Notification From Public |
| Incident Identified Datetime | 2021-10-23 10:44:00 |
| 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 |
| Shutdown Datetime | 2021-10-23 10:44:00 |
| Restart Datetime | 2021-11-01 10:25:00 |
| Communication State Fed Ind | No |
| On Site Datetime | 2021-10-23 10:44:00 |
| Confirmed Discovery Datetime | 2021-10-23 10:44:00 |
| Nrc Rpt Datetime | 2021-10-23 11:59:00 |
| Nrc Rpt Num | 1320220 NRC Report How to search |
| Additional Nrc Report Numbers | 1320339 |
| Ignite Ind | No |
| Upstream Action Taken | Valve Closure |
| Upstream Valve Close Datetime | 2021-10-23 10:44:00 |
| Upstream Valve Type Ind | Remotely Controlled |
| Downstream Action Taken | Valve Closure |
| Downstream Vlv Close Datetime | 2021-10-23 10:44:00 |
| Downstream Valve Type Ind | Remotely Controlled |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Opelika - Alma (Spur Line) |
| Segment Name | Dixie/119 |
| Onshore State Abbreviation | Al |
| Onshore Postal Code | 36875 |
| Onshore City Name | Seale |
| Onshore County Name | Russell |
| Designated Location | Milepost |
| Designated Name | 23.64 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 48 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Puddle Weld Ind | No |
| Pipe Diameter | 6.625 |
| Pipe Wall Thickness | 0.172 |
| Pipe Smys | 42000 |
| Pipe Specification | Api-5l |
| Pipe Seam Type | Erw - High Frequency |
| Pipe Manufacturer | American Steel |
| Pipe Coating Type | Coal Tar |
| Coating Applied Ind | Unknown |
| Installation Year | 1965 |
| Manufactured Year | 1965 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Crack |
| 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 | 58500 |
| Est Cost Prop Damage | 300000 |
| Est Cost Emergency | 10000 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 368500 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Accident Psig | 425 |
| Mop Psig | 1358 |
| Mop Cfr Section | Subpart E Pressure Test �195.406(A)(3) View CFR 49 §192 |
| Maop Established Date | 2003-04-30 00:00:00 |
| Maop Reversal Flow Ind | No |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 180365 |
| 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 | 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 | This was a crack in the pipeline which caused the leak. |
| 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 Crack Ind | Yes |
| Collected Data Ind | Yes |
| Axial Magnetic Flx Lkg Ind | Yes |
| Axial Recent Year | 2020 |
| Axial Rcnt Propul Method | Free Swimming |
| Axial Rcnt Attuned Detect | Metal Loss |
| Axial Rcnt Atnd Dtct Metal | Standard Resolution |
| Axial Previous Year | 2015 |
| Axial Prev Propul Method | Free Swimming |
| Axial Prev Attuned Detect | Metal Loss |
| Axial Prev Atnd Dtct Metal | Standard Resolution |
| Has Hydrtst Conduc Before Ind | Yes |
| Hydrtst Most Rcnt Year | 2003 |
| Hydrtst Most Rcnt Pressure | 1912 |
| Direct Asmnt Conducted | No |
| Non Destructive Exam Ind | No |
| Preparer Name | N***** L* G*** J** |
| Preparer Title | Senior Pipeline Compliance Specialist |
| Preparer Email | N****@e****.com |
| Preparer Telephone | 985-493-4629 |
| Prepared Date | 2022-04-14 00:00:00 |
| Local Contact Name | N***** L* G*** J** |
| Local Contact Email | N****@e****.com |
| Local Contact Telephone | 985-493-4629 |
| Authorizer Name | N*** T***** |
| Authorizer Telephone | 713-381-2493 |
| Authorizer Title | Senior Compliance Manager |
| Authorizer Email | N*******@e****.com |
| Narrative | On may 23, 2021 at 09:05, enterprise houston control center (hcc) received a call from a landowner in seale, alabama reporting ice on the ground with a smell. At 10:44 enterprise confirmed a leak at mp 23.625 on the pipeline right-of-way and immediately isolated the section of pipeline. Enterprise determined the event to be reportable at 11:20 and reported to the nrc at 11:59. The pipeline was pigged to remove product from the pipeline and purged with nitrogen. A 70 feet section of mainline pipe was cut and removed from service. A new section of mainline pipe was pressure tested, installed, purged and returned to service. A 19.27 feet of mainline pipe containing the leak location was examined by metallurgical analysis. The results of the metallurgical analysis indicated that the leak occurred at a colony of interlinked, intergranular cracks consistent with high ph stress corrosion cracking (scc) were located in the base metal, near the seam weld, at the 9:24 orientation. A likely contributing factor to the failure/cracking was residual stresses from the seam welding process based on the presence of the cracking adjacent to the seam weld. The PHMSA accident division was notified on 10/23/2021 at 12:00. The 48-hour update to the nrc took place on 10/25/2021 at 09:16 # 1320339. |
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