Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2024-06-06 — TX
Operator
Northwest Pipeline Llc
Cause
Material Failure Of Pipe Or Weld
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$256,000
Incident datetime
2024-06-06 00:00 UTC
Report number
Location
TX
Narrative
On thursday, may 9th, williams called the nrc to report an incident on line 2443 in the northwest pipeline system near mp 112.5 in wolf creek, oregon. Original nrc# 1398534. The incident occurred during the removal of coating on the pipeline while completing an exploratory dig based on an ili run. Cause of the leak is currently under investigation. The leak was temporarily remediated with a plidco leak clamp. There is a pressure reduction on the line since the onset of the digs. Considered reportable due to an approximate cost to repair of $200,000. Permanent repair by cut out is expected to be completed june 15th.
Detailed record list
Report Received Date
2024-06-06 00:00:00
Iyear
2024
Report Number
20240075
Supplemental Number
39827
Report Type
Supplemental Final
Operator Id
13845
Name
Northwest Pipeline Llc
Operator Street Address
2800 Post Oak Blvd
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77056
Time Zone
Pacific
Daylight Savings Ind
Yes
Location Latitude
42.69755643
Location Longitude
-123.3861667
Nrc Rpt Num
1398534
Additional Nrc Report Numbers
1398579
Commodity Released Type
Natural Gas
Unintentional Release
11
Intentional Release
0
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Status When Identified
Normal Operation, Includes Pauses During Maintenance
Shutdown Due Accident Ind
No
Shutdown Explain
Pin Hole Leak Identified. Temporary Plidco Leak Clamp Applied W/o Shutdown
Communication State Fed Ind
No
Ignite Ind
No
Upstream Action Taken
Operational Control
Upstream Oprtnl Cntrl Detail
Pin Hole Leak Identified. Temporary Plidco Leak Clamp Applied. No Additional Control Required
Downstream Action Taken
Operational Control
Downstream Oprtnl Cntrl Detail
Pin Hole Leak Identified. Temporary Plidco Leak Clamp Applied. No Additional Control Required
Num Pub Evacuated
0
On Off Shore
Onshore
Onshore State Abbreviation
Or
Onshore Postal Code
97497
Onshore City Name
Wolf Creek
Onshore County Name
Josephine
Designated Location
Milepost
Designated Name
112.5
Pipe Fac Name
Grants Pass Lateral
Segment Name
2443
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Exposed Due To Excavation
Depth Of Cover
48
Other Underground Facilities
No
Crossing
No
Pipe Facility Type
Interstate
System Part Involved
Onshore Pipeline, Including Valve Sites
Item Involved
Pipe
Pipe Type
Pipe Body
Pipe Diameter
10.75
Puddle Weld Ind
No
Pipe Wall Thickness
0.188
Pipe Smys
52000
Pipe Specification
Api 5lx
Pipe Seam Type
Longitudinal Erw - Low Frequency
Pipe Manufacturer
Kaiser Steel Corporation
Pipe Coating Type
Epoxy
Coating Applied Ind
No
Installation Year
1963
Manufactured Year
1963
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Pinhole
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
341
Heat Damage Ind
No
Non Heat Damage Ind
No
Did Occur In Mca Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
55
Est Cost Intentional Release
0
Est Cost Prop Damage
256000
Est Cost Emergency
0
Est Cost Other
0
Gas Cost In Mcf
5
Prpty
256055
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Wildlife Impact Ind
No
Accident Psig
600
Gas Flow In Pipe In Mcf
8000
Mop Psig
896
Mop Cfr Section
192.619(C)
Maop Established Date
2002-10-14 00:00:00
Maop Reversal Flow Ind
No
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
Yes
Exceed Restriction Ind
No
Phmsa Restriction Ind
Not Mandated
Gas Required Odorized Ind
Yes
Gas Odorized Ind
Yes
Length Segment Isolated
73660
Internal Inspection Ind
Yes
Operation Complications Ind
No
Pipeline Function
Transmission System
Scada In Place Ind
No
Accident Identifier
Other
Accident Details
Dig Investigation Following Ili Tool Survey
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
Leak identified during anomaly dig. Anomaly identified during ili tool run. Leak was too small to cause a drop in line pressure.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Material Failure Of Pipe Or Weld
Cause Details
Environmental Cracking-Related
Pwjf Failure Type
Environmental Cracking-Related
Field Exam Ind
Yes
Stress Subtype
Stress Corrosion Cracking
Post Constr Pressure Test Val
Unknown
Collected Data Ind
Yes
Axial Magnetic Flx Lkg Ind
Yes
Cir Trn Wave Mgn Flx Lkg Ind
Yes
Geometry Deformation Ind
Yes
Emat Ind
Yes
Other Tool Tech Ind
Yes
Axial Recent Year
2024
Axial Rcnt Propul Method
Free Swimming
Axial Rcnt Attuned Detect
Metal Loss
Axial Rcnt Atnd Dtct Metal
High Resolution
Axial Previous Year
2020
Axial Prev Propul Method
Free Swimming
Axial Prev Attuned Detect
Metal Loss
Axial Prev Atnd Dtct Metal
High Resolution
Circ Wave Recent Year
2024
Circ Wv Rcnt Propul Method
Free Swimming
Circ Wv Rcnt Resolution
High Resolution
Circ Wv Previous Year
2020
Circ Wv Prev Propul Method
Free Swimming
Circ Wv Prev Resolution
Standard Resolution
Geometry Recent Year
2024
Geometry Rcnt Propul Method
Free Swimming
Geometry Rcnt Resolution
High Resolution
Geometrt Rcnt Measur Cups
No Cups
Geometry Previous Year
2020
Geometry Prev Propul Method
Free Swimming
Geometry Prev Resolution
High Resolution
Geometrt Prev Measur Cups
No Cups
Emat Recent Year
2024
Emat Rcnt Propul Method
Free Swimming
Emat Previous Year
2020
Emat Prev Propul Method
Free Swimming
Other Tool
Idd-Sm (Circumferential Crack)
Other Recent Year
2024
Other Rcnt Propul Method
Free Swimming
Has Hydrtst Conduc Before Ind
No
Direct Asmnt Conducted
No
Non Destructive Exam Ind
No
Preparer Name
C********** E*****
Preparer Title
Senior Engineer
Preparer Email
C***********@w*******.com
Preparer Telephone
570-406-0743
Authorizer Name
E*** W****
Authorizer Title
Manager Pipeline Safety
Authorizer Telephone
713-215-3459
Authorizer Email
E*********@w*******.com
Narrative
On thursday, may 9th, williams called the nrc to report an incident on line 2443 in the northwest pipeline system near mp 112.5 in wolf creek, oregon. Original nrc# 1398534. The incident occurred during the removal of coating on the pipeline while completing an exploratory dig based on an ili run. Cause of the leak is currently under investigation. The leak was temporarily remediated with a plidco leak clamp. There is a pressure reduction on the line since the onset of the digs. Considered reportable due to an approximate cost to repair of $200,000. Permanent repair by cut out is expected to be completed june 15th.
| Report Received Date | 2024-06-06 00:00:00 |
|---|---|
| Iyear | 2024 |
| Report Number | 20240075 |
| Supplemental Number | 39827 |
| Report Type | Supplemental Final |
| Operator Id | 13845 PHMSA Enforcement |
| Name | Northwest Pipeline Llc |
| Operator Street Address | 2800 Post Oak Blvd |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77056 |
| Time Zone | Pacific |
| Daylight Savings Ind | Yes |
| Location Latitude | 42.69755643 Google Maps OpenStreetMap |
| Location Longitude | -123.3861667 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1398534 NRC Report How to search |
| Additional Nrc Report Numbers | 1398579 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 11 |
| Intentional Release | 0 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Status When Identified | Normal Operation, Includes Pauses During Maintenance |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | Pin Hole Leak Identified. Temporary Plidco Leak Clamp Applied W/o Shutdown |
| Communication State Fed Ind | No |
| Ignite Ind | No |
| Upstream Action Taken | Operational Control |
| Upstream Oprtnl Cntrl Detail | Pin Hole Leak Identified. Temporary Plidco Leak Clamp Applied. No Additional Control Required |
| Downstream Action Taken | Operational Control |
| Downstream Oprtnl Cntrl Detail | Pin Hole Leak Identified. Temporary Plidco Leak Clamp Applied. No Additional Control Required |
| Num Pub Evacuated | 0 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Or |
| Onshore Postal Code | 97497 |
| Onshore City Name | Wolf Creek |
| Onshore County Name | Josephine |
| Designated Location | Milepost |
| Designated Name | 112.5 |
| Pipe Fac Name | Grants Pass Lateral |
| Segment Name | 2443 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Exposed Due To Excavation |
| Depth Of Cover | 48 |
| Other Underground Facilities | No |
| Crossing | No |
| Pipe Facility Type | Interstate |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Pipe Diameter | 10.75 |
| Puddle Weld Ind | No |
| Pipe Wall Thickness | 0.188 |
| Pipe Smys | 52000 |
| Pipe Specification | Api 5lx |
| Pipe Seam Type | Longitudinal Erw - Low Frequency |
| Pipe Manufacturer | Kaiser Steel Corporation |
| Pipe Coating Type | Epoxy |
| Coating Applied Ind | No |
| Installation Year | 1963 |
| Manufactured Year | 1963 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Pinhole |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 341 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Did Occur In Mca Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 55 |
| Est Cost Intentional Release | 0 |
| Est Cost Prop Damage | 256000 |
| Est Cost Emergency | 0 |
| Est Cost Other | 0 |
| Gas Cost In Mcf | 5 |
| Prpty | 256055 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Wildlife Impact Ind | No |
| Accident Psig | 600 |
| Gas Flow In Pipe In Mcf | 8000 |
| Mop Psig | 896 |
| Mop Cfr Section | 192.619(C) View CFR 49 §192 |
| Maop Established Date | 2002-10-14 00:00:00 |
| Maop Reversal Flow Ind | No |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Pressure Restriction Ind | Yes |
| Exceed Restriction Ind | No |
| Phmsa Restriction Ind | Not Mandated |
| Gas Required Odorized Ind | Yes |
| Gas Odorized Ind | Yes |
| Length Segment Isolated | 73660 |
| Internal Inspection Ind | Yes |
| Operation Complications Ind | No |
| Pipeline Function | Transmission System |
| Scada In Place Ind | No |
| Accident Identifier | Other |
| Accident Details | Dig Investigation Following Ili Tool Survey |
| 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 | Leak identified during anomaly dig. Anomaly identified during ili tool run. Leak was too small to cause a drop in line pressure. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Material Failure Of Pipe Or Weld |
| Cause Details | Environmental Cracking-Related |
| Pwjf Failure Type | Environmental Cracking-Related |
| Field Exam Ind | Yes |
| Stress Subtype | Stress Corrosion Cracking |
| Post Constr Pressure Test Val | Unknown |
| Collected Data Ind | Yes |
| Axial Magnetic Flx Lkg Ind | Yes |
| Cir Trn Wave Mgn Flx Lkg Ind | Yes |
| Geometry Deformation Ind | Yes |
| Emat Ind | Yes |
| Other Tool Tech Ind | Yes |
| Axial Recent Year | 2024 |
| Axial Rcnt Propul Method | Free Swimming |
| Axial Rcnt Attuned Detect | Metal Loss |
| Axial Rcnt Atnd Dtct Metal | High Resolution |
| Axial Previous Year | 2020 |
| Axial Prev Propul Method | Free Swimming |
| Axial Prev Attuned Detect | Metal Loss |
| Axial Prev Atnd Dtct Metal | High Resolution |
| Circ Wave Recent Year | 2024 |
| Circ Wv Rcnt Propul Method | Free Swimming |
| Circ Wv Rcnt Resolution | High Resolution |
| Circ Wv Previous Year | 2020 |
| Circ Wv Prev Propul Method | Free Swimming |
| Circ Wv Prev Resolution | Standard Resolution |
| Geometry Recent Year | 2024 |
| Geometry Rcnt Propul Method | Free Swimming |
| Geometry Rcnt Resolution | High Resolution |
| Geometrt Rcnt Measur Cups | No Cups |
| Geometry Previous Year | 2020 |
| Geometry Prev Propul Method | Free Swimming |
| Geometry Prev Resolution | High Resolution |
| Geometrt Prev Measur Cups | No Cups |
| Emat Recent Year | 2024 |
| Emat Rcnt Propul Method | Free Swimming |
| Emat Previous Year | 2020 |
| Emat Prev Propul Method | Free Swimming |
| Other Tool | Idd-Sm (Circumferential Crack) |
| Other Recent Year | 2024 |
| Other Rcnt Propul Method | Free Swimming |
| Has Hydrtst Conduc Before Ind | No |
| Direct Asmnt Conducted | No |
| Non Destructive Exam Ind | No |
| Preparer Name | C********** E***** |
| Preparer Title | Senior Engineer |
| Preparer Email | C***********@w*******.com |
| Preparer Telephone | 570-406-0743 |
| Authorizer Name | E*** W**** |
| Authorizer Title | Manager Pipeline Safety |
| Authorizer Telephone | 713-215-3459 |
| Authorizer Email | E*********@w*******.com |
| Narrative | On thursday, may 9th, williams called the nrc to report an incident on line 2443 in the northwest pipeline system near mp 112.5 in wolf creek, oregon. Original nrc# 1398534. The incident occurred during the removal of coating on the pipeline while completing an exploratory dig based on an ili run. Cause of the leak is currently under investigation. The leak was temporarily remediated with a plidco leak clamp. There is a pressure reduction on the line since the onset of the digs. Considered reportable due to an approximate cost to repair of $200,000. Permanent repair by cut out is expected to be completed june 15th. |
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