Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2019-05-29 — TX
Operator
Phillips 66 Pipeline Llc
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)
$145,000
Incident datetime
2019-05-29 08:45
Report number
Location
TX
Narrative
On wednesday, may 29, 2019 at approximately 8:45 am during a routine anamoly dig, the crew was removing coating and wrap and heard a hissing noise coming from a pin hole leak near a stopple fitting on the pr-01 pipeline. The crew exited the ditch and made notifications. The line was immediately shut down and isolated and the leak area was monitored. To repair the leak, the pipeline was purged with nitrogen purge and the section of the pipeline with the leak was replaced. The pipeline restarted at approximately 6 pm on sunday, june 2, 2019. The total leak volume was estimated at 0.98 barrels. The section of pipe that was removed has been sent to a lab for metallurgical analysis to determine the cause of the pinhole. This report will be finalized following obtaining the results of the analysis. 02/26/2020 update received preliminary metallurgical analysis shows that the failure appears to have been caused by soil side selective seam corrosion. A mechanical test is in progress to verify the results. 3/30/2020 update. Updated depth of cover due to discrepancy in API reports--tf 6/3/2020 final analysis. Final analysis concluded that the pipe leaked due to selective erw seam weld corrosion. The corrosion was entirely external and highly localized in a small zone of apparent coating failure at the 6:00 o'clock position. The erw seam weld was of good quality with no hook cracks or excessive internal flash. Internal corrosion was minimal and the pipe met the chemistry and mechanical properties requirements for API 5l gr. X-42. 9-10-2020 update request from aid updated the unknown frequency, year and manufacture of pipe. Corrected g-5 to a yes because there was damaged coating. --tf 9-15-2020 update due to error in pipe manufacture reporting--tf
Detailed record list
Report Received Date
2019-06-20 00:00:00
Iyear
2019
Report Number
20190198
Supplemental Number
34272
Report Type
Supplemental Final
Operator Id
31684
Name
Phillips 66 Pipeline Llc
Operator Street Address
2331 Citywest Blvd
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77042
Local Datetime
2019-05-29 08:45:00
Location Latitude
39.68194
Location Longitude
-104.78501
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
0.98
Intentional Release Bbls
0
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Contractor Working For The Operator
Incident Identified Datetime
2019-05-29 08:45:00
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2019-05-29 08:50:00
Restart Datetime
2019-06-02 18:00:00
On Site Datetime
2019-05-29 08:45:00
Nrc Rpt Datetime
2019-05-29 09:56:00
Nrc Rpt Num
1247141
Ignite Ind
No
Explode Ind
No
Upstream Valve Type Ind
Remotely Controlled
Downstream Valve Type Ind
Remotely Controlled
Num Pub Evacuated
0
Pipe Fac Name
Pr-01
Segment Name
Pr-01 Denver Junction To Kiowa
Onshore State Abbreviation
Co
Onshore Postal Code
80013
Onshore City Name
Aurora
Onshore County Name
Arapahoe
Designated Location
Milepost/valve Station
Designated Name
Mp 343
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Exposed Due To Excavation
Depth Of Cover
36
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Pipe
Pipe Type
Pipe Body
Pipe Diameter
6
Pipe Wall Thickness
0.188
Pipe Smys
42000
Pipe Specification
Api-5l
Pipe Seam Type
Erw - Low Frequency
Pipe Manufacturer
Republic Steel
Pipe Coating Type
Coal Tar
Installation Year
1950
Manufactured Year
Unknown
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Pinhole
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
60
Est Cost Prop Damage
145000
Est Cost Emergency
0
Est Cost Environmental
0
Est Cost Other
0
Prpty
145060
Accident Psig
1155
Mop Psig
1350
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
31928
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
Pinhole leak discovered during an anomaly dig. Controller had no affect on the incident.
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
Selective Seam Corrosion Ind
Yes
Metallurgical Basis Ind
Yes
Underground Location
Yes
Under Cathodic Protection Ind
Yes
Cathodic Pro Start Year
1979
Shielding Evident
Unknown
Cathodic Survey Type
Yes
Cp Annual Survey Ind
Yes
Other Cp Survey Ind
Yes
Cp Annual Survey Year
2018
Other Cp Survey Year
2019
Prior Damage
Yes
Collected Data Ind
Yes
Axial Magnetic Flx Lkg Ind
Yes
Cir Trn Wave Mgn Flx Lkg Ind
Yes
Axial Recent Year
2018
Circ Wave Recent Year
2012
Geometry Recent Year
2018
Other Recent Year
2018
Has Hydrtst Conduc Before Ind
Yes
Hydrtst Most Rcnt Year
1994
Hydrtst Most Rcnt Pressure
1916
Direct Asmnt Conducted
No
Non Destructive Exam Ind
No
Preparer Name
J*** R********
Preparer Title
Dot Coordinator
Preparer Email
J***************@p**.com
Preparer Telephone
806-318-9269
Prepared Date
2020-09-15 00:00:00
Authorizer Name
T*** F****
Authorizer Telephone
8327651632
Authorizer Title
Director Dot Compliance
Authorizer Email
T***********@p**.com
Narrative
On wednesday, may 29, 2019 at approximately 8:45 am during a routine anamoly dig, the crew was removing coating and wrap and heard a hissing noise coming from a pin hole leak near a stopple fitting on the pr-01 pipeline. The crew exited the ditch and made notifications. The line was immediately shut down and isolated and the leak area was monitored. To repair the leak, the pipeline was purged with nitrogen purge and the section of the pipeline with the leak was replaced. The pipeline restarted at approximately 6 pm on sunday, june 2, 2019. The total leak volume was estimated at 0.98 barrels. The section of pipe that was removed has been sent to a lab for metallurgical analysis to determine the cause of the pinhole. This report will be finalized following obtaining the results of the analysis. 02/26/2020 update received preliminary metallurgical analysis shows that the failure appears to have been caused by soil side selective seam corrosion. A mechanical test is in progress to verify the results. 3/30/2020 update. Updated depth of cover due to discrepancy in API reports--tf 6/3/2020 final analysis. Final analysis concluded that the pipe leaked due to selective erw seam weld corrosion. The corrosion was entirely external and highly localized in a small zone of apparent coating failure at the 6:00 o'clock position. The erw seam weld was of good quality with no hook cracks or excessive internal flash. Internal corrosion was minimal and the pipe met the chemistry and mechanical properties requirements for API 5l gr. X-42. 9-10-2020 update request from aid updated the unknown frequency, year and manufacture of pipe. Corrected g-5 to a yes because there was damaged coating. --tf 9-15-2020 update due to error in pipe manufacture reporting--tf
| Report Received Date | 2019-06-20 00:00:00 |
|---|---|
| Iyear | 2019 |
| Report Number | 20190198 |
| Supplemental Number | 34272 |
| Report Type | Supplemental Final |
| Operator Id | 31684 PHMSA Enforcement |
| Name | Phillips 66 Pipeline Llc |
| Operator Street Address | 2331 Citywest Blvd |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77042 |
| Local Datetime | 2019-05-29 08:45:00 |
| Location Latitude | 39.68194 Google Maps OpenStreetMap |
| Location Longitude | -104.78501 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 | 0.98 |
| Intentional Release Bbls | 0 |
| Recovered Bbls | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Contractor Working For The Operator |
| Incident Identified Datetime | 2019-05-29 08:45:00 |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2019-05-29 08:50:00 |
| Restart Datetime | 2019-06-02 18:00:00 |
| On Site Datetime | 2019-05-29 08:45:00 |
| Nrc Rpt Datetime | 2019-05-29 09:56:00 |
| Nrc Rpt Num | 1247141 NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Upstream Valve Type Ind | Remotely Controlled |
| Downstream Valve Type Ind | Remotely Controlled |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Pr-01 |
| Segment Name | Pr-01 Denver Junction To Kiowa |
| Onshore State Abbreviation | Co |
| Onshore Postal Code | 80013 |
| Onshore City Name | Aurora |
| Onshore County Name | Arapahoe |
| Designated Location | Milepost/valve Station |
| Designated Name | Mp 343 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Exposed Due To Excavation |
| Depth Of Cover | 36 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Pipe Diameter | 6 |
| Pipe Wall Thickness | 0.188 |
| Pipe Smys | 42000 |
| Pipe Specification | Api-5l |
| Pipe Seam Type | Erw - Low Frequency |
| Pipe Manufacturer | Republic Steel |
| Pipe Coating Type | Coal Tar |
| Installation Year | 1950 |
| Manufactured Year | Unknown |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Pinhole |
| 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 | 60 |
| Est Cost Prop Damage | 145000 |
| Est Cost Emergency | 0 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 145060 |
| Accident Psig | 1155 |
| Mop Psig | 1350 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 31928 |
| 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 | Pinhole leak discovered during an anomaly dig. Controller had no affect on the incident. |
| 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 |
| Selective Seam Corrosion Ind | Yes |
| Metallurgical Basis Ind | Yes |
| Underground Location | Yes |
| Under Cathodic Protection Ind | Yes |
| Cathodic Pro Start Year | 1979 |
| Shielding Evident | Unknown |
| Cathodic Survey Type | Yes |
| Cp Annual Survey Ind | Yes |
| Other Cp Survey Ind | Yes |
| Cp Annual Survey Year | 2018 |
| Other Cp Survey Year | 2019 |
| Prior Damage | Yes |
| Collected Data Ind | Yes |
| Axial Magnetic Flx Lkg Ind | Yes |
| Cir Trn Wave Mgn Flx Lkg Ind | Yes |
| Axial Recent Year | 2018 |
| Circ Wave Recent Year | 2012 |
| Geometry Recent Year | 2018 |
| Other Recent Year | 2018 |
| Has Hydrtst Conduc Before Ind | Yes |
| Hydrtst Most Rcnt Year | 1994 |
| Hydrtst Most Rcnt Pressure | 1916 |
| Direct Asmnt Conducted | No |
| Non Destructive Exam Ind | No |
| Preparer Name | J*** R******** |
| Preparer Title | Dot Coordinator |
| Preparer Email | J***************@p**.com |
| Preparer Telephone | 806-318-9269 |
| Prepared Date | 2020-09-15 00:00:00 |
| Authorizer Name | T*** F**** |
| Authorizer Telephone | 8327651632 |
| Authorizer Title | Director Dot Compliance |
| Authorizer Email | T***********@p**.com |
| Narrative | On wednesday, may 29, 2019 at approximately 8:45 am during a routine anamoly dig, the crew was removing coating and wrap and heard a hissing noise coming from a pin hole leak near a stopple fitting on the pr-01 pipeline. The crew exited the ditch and made notifications. The line was immediately shut down and isolated and the leak area was monitored. To repair the leak, the pipeline was purged with nitrogen purge and the section of the pipeline with the leak was replaced. The pipeline restarted at approximately 6 pm on sunday, june 2, 2019. The total leak volume was estimated at 0.98 barrels. The section of pipe that was removed has been sent to a lab for metallurgical analysis to determine the cause of the pinhole. This report will be finalized following obtaining the results of the analysis. 02/26/2020 update received preliminary metallurgical analysis shows that the failure appears to have been caused by soil side selective seam corrosion. A mechanical test is in progress to verify the results. 3/30/2020 update. Updated depth of cover due to discrepancy in API reports--tf 6/3/2020 final analysis. Final analysis concluded that the pipe leaked due to selective erw seam weld corrosion. The corrosion was entirely external and highly localized in a small zone of apparent coating failure at the 6:00 o'clock position. The erw seam weld was of good quality with no hook cracks or excessive internal flash. Internal corrosion was minimal and the pipe met the chemistry and mechanical properties requirements for API 5l gr. X-42. 9-10-2020 update request from aid updated the unknown frequency, year and manufacture of pipe. Corrected g-5 to a yes because there was damaged coating. --tf 9-15-2020 update due to error in pipe manufacture reporting--tf |
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