Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2021-07-08 — WA
Operator
Cascade Natural Gas Corp
Cause
Excavation Issue
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$8,000
Incident datetime
2021-07-08 11:57
Report number
Location
WA, FRANKLIN
Narrative
At 11:57 a.M. Pst on july 8, 2021, a third party excavator was crossing an exposed 8" pipeline. While tunneling under the exposed pipeline with an excavator, the 3rd party excavator struck the 8" pipeline. The line strike resulted in a 2" by 6" hole in the pipeline. Cng personnel used existing line stopper fittings (stopple fittings) to control the release which allowed the temporary installation of a plidco clamp. The permanent repair was completed at 4:15 p.M. Pst on 7/14/2021. Per �192.5 class locations, this line strike occurred in a class 1 location. Per internal procedures, all distribution pipelines (less than 20% smys) are classified as class 3, unless located in a class 4 location. April 5, 2021 (part e 3.B date maop established:) is the date this pipeline was downrated to a 200 psig maop.
Detailed record list
Occurred At
2021-07-08 11:57:00
Year
2021
Report Received Date
2021-08-02 00:00:00
Iyear
2021.0
Report Number
20210066.0
Supplemental Number
35563.0
Report Type
Supplemental Final
Operator Id
2128
Name
Cascade Natural Gas Corp
Operator Street Address
8113 W. Grandridge Blvd
Operator City Name
Kennewick
Operator State Abbreviation
WA
Operator Postal Code
99336
Local Datetime
2021-07-08 16:00:00
Time Zone
Pacific
Daylight Savings Ind
Yes
Location Street Address
Intersection Of Foster Wells Rd And Capitol Ave
Location City Name
Pasco
Location County Name
Franklin
Location State Abbreviation
WA
Location Postal Code
99301
Location Latitude
46.28317076
Location Longitude
-119.0877897
Flow Cont Stopple Fitng Ind
Yes
Nrc Rpt Datetime
2021-07-08 16:10:00
Nrc Rpt Num
1310098
Additional Nrc Report Numbers
1310225
Commodity Released Type
Natural Gas
Unintentional Release
6637.0
Intentional Release
0.0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
No
Num Pub Evacuated
0.0
Incident Identified Datetime
2021-07-08 11:57:00
Communication State Fed Ind
Yes
Party Initiated Communication
Operator
Initial Responder Com Datetime
2021-07-08 11:57:00
On Site Datetime
2021-07-08 11:40:00
Federal
No
Location Type
Public Property
Incident Area Type
Underground
Incident Area Subtype
Under Pavement
Depth Of Cover
84.0
Other Underground Facilities
No
Crossing
No
Pipe Facility Type
Investor Owned
System Part Involved
Main
Installation Year
1958.0
Pipe Diameter
8.0
Pipe Specification
Unknown
Pipe Manufacturer
Unknown
Material Involved
Steel
Steel Seam Type
Longitudinal Erw - Unknown Frequency
Wt Steel
0.188
Release Type
Mechanical Puncture
Puncture Axial
2.0
Puncture Circum
6.0
Class Location Type
Class 1 Location
Est Cost Oper Paid
4000.0
Est Cost Prop Damage
8000.0
Est Cost Emergency
17000.0
Est Cost Other
0.0
Gas Cost In Mcf
4.5
Est Cost Unintentional Release
29867.0
Est Cost Intentional Release
0.0
Prpty
58867.0
Commercial Affected
0.0
Industrial Affected
0.0
Residences Affected
0.0
Num Persons Hosp Not Ovnght
0.0
Num Injured Treated By Emt
0.0
Num Resident Building Affctd
0.0
Num Business Building Affctd
0.0
Accident Psig
178.0
Normal Psig
185.0
Mop Psig
200.0
Mop Cfr Section
192.619(A)(3)
Maop Established Date
2021-04-05 00:00:00
Accident Pressure
Pressure Did Not Exceed Maop
Gas Odorized System Type
Injection Pump
Gas Odorized Lvl Not Msrd Ind
Yes
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
No
Scada Conf Ind
No
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
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
Puncture was not identified via scada due to operator personnel on site when the line was punctured.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Excavation Damage
Cause Details
Excavation Damage By Third Party
Ex Party Type
Excavation Damage By Third Party
Prior Notification Ind
Yes
One Call System Ind
Yes
State Law Exempt Ind
No
Notify Cga Dirt
No
Public Row Ind
Yes
Public Subtype
City Street
Excavator Type
Contractor
Excavator Equipment
Backhoe/trackhoe
Work Performed
Sewer (Sanitary/storm)
One Call Notified Ind
Yes
One Call Ticket Num
21275913
Locator Type
Utility Owner
Visible Marks
Yes
Service Interruption
No
Root Cause Category
Excavation Issue
Root Cause Type
Excavator Failed To Maintain Clearance After Verifying Marks
Preparer Name
G*** W******
Preparer Title
Manager Policy And Procedure
Preparer Email
G***********@m**.com
Preparer Telephone
208-377-6032
Local Contact Name
G*** W******
Local Contact Email
G***********@m**.com
Local Contact Telephone
208-377-6032
Authorizer Name
G*** W******
Authorizer Title
Manager Policy And Procedure
Authorizer Telephone
208-377-6032
Authorizer Email
G***********@m**.com
Narrative
At 11:57 a.M. Pst on july 8, 2021, a third party excavator was crossing an exposed 8" pipeline. While tunneling under the exposed pipeline with an excavator, the 3rd party excavator struck the 8" pipeline. The line strike resulted in a 2" by 6" hole in the pipeline. Cng personnel used existing line stopper fittings (stopple fittings) to control the release which allowed the temporary installation of a plidco clamp. The permanent repair was completed at 4:15 p.M. Pst on 7/14/2021. Per �192.5 class locations, this line strike occurred in a class 1 location. Per internal procedures, all distribution pipelines (less than 20% smys) are classified as class 3, unless located in a class 4 location. April 5, 2021 (part e 3.B date maop established:) is the date this pipeline was downrated to a 200 psig maop.
| Occurred At | 2021-07-08 11:57:00 |
|---|---|
| Year | 2021 |
| Report Received Date | 2021-08-02 00:00:00 |
| Iyear | 2021.0 |
| Report Number | 20210066.0 |
| Supplemental Number | 35563.0 |
| Report Type | Supplemental Final |
| Operator Id | 2128 PHMSA Enforcement |
| Name | Cascade Natural Gas Corp |
| Operator Street Address | 8113 W. Grandridge Blvd |
| Operator City Name | Kennewick |
| Operator State Abbreviation | WA |
| Operator Postal Code | 99336 |
| Local Datetime | 2021-07-08 16:00:00 |
| Time Zone | Pacific |
| Daylight Savings Ind | Yes |
| Location Street Address | Intersection Of Foster Wells Rd And Capitol Ave |
| Location City Name | Pasco |
| Location County Name | Franklin |
| Location State Abbreviation | WA |
| Location Postal Code | 99301 |
| Location Latitude | 46.28317076 Google Maps OpenStreetMap |
| Location Longitude | -119.0877897 Google Maps OpenStreetMap |
| Flow Cont Stopple Fitng Ind | Yes |
| Nrc Rpt Datetime | 2021-07-08 16:10:00 |
| Nrc Rpt Num | 1310098 NRC Report How to search |
| Additional Nrc Report Numbers | 1310225 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 6637.0 |
| Intentional Release | 0.0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | No |
| Num Pub Evacuated | 0.0 |
| Incident Identified Datetime | 2021-07-08 11:57:00 |
| Communication State Fed Ind | Yes |
| Party Initiated Communication | Operator |
| Initial Responder Com Datetime | 2021-07-08 11:57:00 |
| On Site Datetime | 2021-07-08 11:40:00 |
| Federal | No |
| Location Type | Public Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Pavement |
| Depth Of Cover | 84.0 |
| Other Underground Facilities | No |
| Crossing | No |
| Pipe Facility Type | Investor Owned |
| System Part Involved | Main |
| Installation Year | 1958.0 |
| Pipe Diameter | 8.0 |
| Pipe Specification | Unknown |
| Pipe Manufacturer | Unknown |
| Material Involved | Steel |
| Steel Seam Type | Longitudinal Erw - Unknown Frequency |
| Wt Steel | 0.188 |
| Release Type | Mechanical Puncture |
| Puncture Axial | 2.0 |
| Puncture Circum | 6.0 |
| Class Location Type | Class 1 Location |
| Est Cost Oper Paid | 4000.0 |
| Est Cost Prop Damage | 8000.0 |
| Est Cost Emergency | 17000.0 |
| Est Cost Other | 0.0 |
| Gas Cost In Mcf | 4.5 |
| Est Cost Unintentional Release | 29867.0 |
| Est Cost Intentional Release | 0.0 |
| Prpty | 58867.0 |
| Commercial Affected | 0.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 0.0 |
| Num Persons Hosp Not Ovnght | 0.0 |
| Num Injured Treated By Emt | 0.0 |
| Num Resident Building Affctd | 0.0 |
| Num Business Building Affctd | 0.0 |
| Accident Psig | 178.0 |
| Normal Psig | 185.0 |
| Mop Psig | 200.0 |
| Mop Cfr Section | 192.619(A)(3) View CFR 49 §192 |
| Maop Established Date | 2021-04-05 00:00:00 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Gas Odorized System Type | Injection Pump |
| Gas Odorized Lvl Not Msrd Ind | Yes |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | No |
| Scada Conf Ind | No |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| 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 | Puncture was not identified via scada due to operator personnel on site when the line was punctured. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Excavation Damage |
| Cause Details | Excavation Damage By Third Party |
| Ex Party Type | Excavation Damage By Third Party |
| Prior Notification Ind | Yes |
| One Call System Ind | Yes |
| State Law Exempt Ind | No |
| Notify Cga Dirt | No |
| Public Row Ind | Yes |
| Public Subtype | City Street |
| Excavator Type | Contractor |
| Excavator Equipment | Backhoe/trackhoe |
| Work Performed | Sewer (Sanitary/storm) |
| One Call Notified Ind | Yes |
| One Call Ticket Num | 21275913 |
| Locator Type | Utility Owner |
| Visible Marks | Yes |
| Service Interruption | No |
| Root Cause Category | Excavation Issue |
| Root Cause Type | Excavator Failed To Maintain Clearance After Verifying Marks |
| Preparer Name | G*** W****** |
| Preparer Title | Manager Policy And Procedure |
| Preparer Email | G***********@m**.com |
| Preparer Telephone | 208-377-6032 |
| Local Contact Name | G*** W****** |
| Local Contact Email | G***********@m**.com |
| Local Contact Telephone | 208-377-6032 |
| Authorizer Name | G*** W****** |
| Authorizer Title | Manager Policy And Procedure |
| Authorizer Telephone | 208-377-6032 |
| Authorizer Email | G***********@m**.com |
| Narrative | At 11:57 a.M. Pst on july 8, 2021, a third party excavator was crossing an exposed 8" pipeline. While tunneling under the exposed pipeline with an excavator, the 3rd party excavator struck the 8" pipeline. The line strike resulted in a 2" by 6" hole in the pipeline. Cng personnel used existing line stopper fittings (stopple fittings) to control the release which allowed the temporary installation of a plidco clamp. The permanent repair was completed at 4:15 p.M. Pst on 7/14/2021. Per �192.5 class locations, this line strike occurred in a class 1 location. Per internal procedures, all distribution pipelines (less than 20% smys) are classified as class 3, unless located in a class 4 location. April 5, 2021 (part e 3.B date maop established:) is the date this pipeline was downrated to a 200 psig maop. |
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