Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2017-01-19 — WA
Operator
Cascade Natural Gas Corp
Cause
Pipe, Weld, Or Joint Failure
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$365
Incident datetime
2017-01-19 07:24
Report number
Location
WA, CHELAN
Narrative
The cascade natural gas corporation (cngc) pipeline affected was a 2" steel main that was installed in 1967. The pipeline separated at a girth weld causing the unintentional release of more than 3 million cubic feet of gas, total gas loss was estimated to be 3,875 mcf. The area in which the release occurred was experiencing extreme cold weather and substantial underground frost. The damage to the pipeline observed was consistent with damage caused by frost heave. Frost heave is thought to be a contributing factor to the release. The separated girth weld was retained by cngc and underwent an examination by qualified staff. The examination concluded that the weld had failed and cngc classified the leak as a "pipe, weld or joint failure" as a result. The sub cause was determined to be a construction defect caused by poor workmanship. Cngc worked closely with emergency responders and quickly mobilized resources and equipment to ensure public safety. No injuries, damage to property (other than cngc pipeline) or ignition occurred.
Detailed record list
Occurred At
2017-01-19 07:24:00
Year
2017
Report Received Date
2017-02-06 00:00:00
Iyear
2017.0
Report Number
20170015.0
Supplemental Number
16512.0
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
2017-01-19 18:24:00
Location Street Address
1317 South Hills Drive
Location City Name
Wenatchee
Location County Name
Chelan
Location State Abbreviation
WA
Location Postal Code
98801-1985
Location Latitude
47.405795
Location Longitude
-120.332825
Nrc Rpt Datetime
2017-01-23 14:11:00
Nrc Rpt Num
1169311
Commodity Released Type
Natural Gas
Unintentional Release
3875.0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0.0
Incident Identified Datetime
2017-01-19 07:24:00
On Site Datetime
2017-01-19 07:50:00
Federal
No
Location Type
Public Property
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
34.0
Crossing
No
Pipe Facility Type
Privately Owned
System Part Involved
Main
Installation Year
1967.0
Pipe Diameter
2.375
Pipe Specification
Api 5l
Pipe Manufacturer
Unknown
Material Involved
Steel
Steel Seam Type
Other
Steel Seam Type Details
Unknown
Wt Steel
0.154
Release Type
Rupture
Rupture Orient
Circumferential
Rupture Length
6.5
Rupture Width
2.1
Class Location Type
Class 3 Location
Est Cost Oper Paid
2000.0
Est Cost Prop Damage
365.0
Est Cost Emergency
7642.0
Est Cost Other
0.0
Est Cost Unintentional Release
20000.0
Prpty
30007.0
Commercial Affected
0.0
Industrial Affected
0.0
Residences Affected
1.0
Accident Psig
54.0
Normal Psig
54.0
Mop Psig
60.0
Accident Pressure
Pressure Did Not Exceed Maop
Scada In Place Ind
No
Accident Identifier
Notification From Emergency Responder
Investigation Status
No, the facility was not monitored by a controller(s) at the time of the incident
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Pipe, Weld, Or Joint Failure
Cause Details
Butt Weld
Pwjf Failure Type
Butt Weld
Butt Weld Subtype
Pipe
Additional Other Ind
Yes
Additional Factor Details
None
Result Construction Ind
Yes
Result Construction Subtype
Poor Workmanship
Hydrotest Conducted Ind
No
Preparer Name
C**** G******
Preparer Title
Manager Standards And Compliance
Preparer Email
C******************@c***.com
Preparer Telephone
509-531-6427
Authorizer Name
M*** E*****
Authorizer Title
Director Operation Services
Authorizer Telephone
509-734-4576
Authorizer Email
M**********@c***.com
Narrative
The cascade natural gas corporation (cngc) pipeline affected was a 2" steel main that was installed in 1967. The pipeline separated at a girth weld causing the unintentional release of more than 3 million cubic feet of gas, total gas loss was estimated to be 3,875 mcf. The area in which the release occurred was experiencing extreme cold weather and substantial underground frost. The damage to the pipeline observed was consistent with damage caused by frost heave. Frost heave is thought to be a contributing factor to the release. The separated girth weld was retained by cngc and underwent an examination by qualified staff. The examination concluded that the weld had failed and cngc classified the leak as a "pipe, weld or joint failure" as a result. The sub cause was determined to be a construction defect caused by poor workmanship. Cngc worked closely with emergency responders and quickly mobilized resources and equipment to ensure public safety. No injuries, damage to property (other than cngc pipeline) or ignition occurred.
| Occurred At | 2017-01-19 07:24:00 |
|---|---|
| Year | 2017 |
| Report Received Date | 2017-02-06 00:00:00 |
| Iyear | 2017.0 |
| Report Number | 20170015.0 |
| Supplemental Number | 16512.0 |
| 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 | 2017-01-19 18:24:00 |
| Location Street Address | 1317 South Hills Drive |
| Location City Name | Wenatchee |
| Location County Name | Chelan |
| Location State Abbreviation | WA |
| Location Postal Code | 98801-1985 |
| Location Latitude | 47.405795 Google Maps OpenStreetMap |
| Location Longitude | -120.332825 Google Maps OpenStreetMap |
| Nrc Rpt Datetime | 2017-01-23 14:11:00 |
| Nrc Rpt Num | 1169311 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 3875.0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0.0 |
| Incident Identified Datetime | 2017-01-19 07:24:00 |
| On Site Datetime | 2017-01-19 07:50:00 |
| Federal | No |
| Location Type | Public Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 34.0 |
| Crossing | No |
| Pipe Facility Type | Privately Owned |
| System Part Involved | Main |
| Installation Year | 1967.0 |
| Pipe Diameter | 2.375 |
| Pipe Specification | Api 5l |
| Pipe Manufacturer | Unknown |
| Material Involved | Steel |
| Steel Seam Type | Other |
| Steel Seam Type Details | Unknown |
| Wt Steel | 0.154 |
| Release Type | Rupture |
| Rupture Orient | Circumferential |
| Rupture Length | 6.5 |
| Rupture Width | 2.1 |
| Class Location Type | Class 3 Location |
| Est Cost Oper Paid | 2000.0 |
| Est Cost Prop Damage | 365.0 |
| Est Cost Emergency | 7642.0 |
| Est Cost Other | 0.0 |
| Est Cost Unintentional Release | 20000.0 |
| Prpty | 30007.0 |
| Commercial Affected | 0.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 1.0 |
| Accident Psig | 54.0 |
| Normal Psig | 54.0 |
| Mop Psig | 60.0 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Scada In Place Ind | No |
| Accident Identifier | Notification From Emergency Responder |
| Investigation Status | No, the facility was not monitored by a controller(s) at the time of the incident |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Pipe, Weld, Or Joint Failure |
| Cause Details | Butt Weld |
| Pwjf Failure Type | Butt Weld |
| Butt Weld Subtype | Pipe |
| Additional Other Ind | Yes |
| Additional Factor Details | None |
| Result Construction Ind | Yes |
| Result Construction Subtype | Poor Workmanship |
| Hydrotest Conducted Ind | No |
| Preparer Name | C**** G****** |
| Preparer Title | Manager Standards And Compliance |
| Preparer Email | C******************@c***.com |
| Preparer Telephone | 509-531-6427 |
| Authorizer Name | M*** E***** |
| Authorizer Title | Director Operation Services |
| Authorizer Telephone | 509-734-4576 |
| Authorizer Email | M**********@c***.com |
| Narrative | The cascade natural gas corporation (cngc) pipeline affected was a 2" steel main that was installed in 1967. The pipeline separated at a girth weld causing the unintentional release of more than 3 million cubic feet of gas, total gas loss was estimated to be 3,875 mcf. The area in which the release occurred was experiencing extreme cold weather and substantial underground frost. The damage to the pipeline observed was consistent with damage caused by frost heave. Frost heave is thought to be a contributing factor to the release. The separated girth weld was retained by cngc and underwent an examination by qualified staff. The examination concluded that the weld had failed and cngc classified the leak as a "pipe, weld or joint failure" as a result. The sub cause was determined to be a construction defect caused by poor workmanship. Cngc worked closely with emergency responders and quickly mobilized resources and equipment to ensure public safety. No injuries, damage to property (other than cngc pipeline) or ignition occurred. |
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