Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2016-10-19 — OR
Operator
Northwest Natural Gas Co
Cause
Notification Issue
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
1 injury
Property damage (nominal)
$35,000
Incident datetime
2016-10-19 08:51
Report number
Location
OR, MULTNOMAH
Narrative
At approximately 8:51am on october 19, 2016 nw natural received notification of damage to a 1" service line at nw 23rd avenue and glisan street in portland. The service was damaged by loy clark during the course of their excavation for a third party. The natural gas ignited at 9:38am resulting in the loss of a structure at 500/510 nw 23rd avenue. A nw natural first responder arrived on site at 9:10am. Gas was controlled at 9:52am by closing a 2-inch valve located at the intersection of nw 22nd avenue and nw glisan street. Gas service was interrupted to 126 customers. All costs reported in part d are preliminary estimates and will be updated on supplemental reports. Historical perspective: on july 12th 2016, a locate request (ticket 16173103) for installing electric primary and service was called in by loy clark and, was accurately marked by locating inc. For the area where loy clark was excavating on october 19th, 2016. Marks from this ticket were still visible and accurate. On september 12th, 2016, a locate request for replacing telephone and cable tv mainline was called in by loy clark. The locate description for this request was close to, but did not cover, the area where loy clark was excavating on october 19th, 2016. Locate ticket number 16229204. On october 19th, 2016, during the course of excavation on part of the sidewalk on nw glisan within the area covered by the july 12th, 2016 locate, an employee with loy clark pipeline hit the gas service to 500 nw 23rd with a back hoe causing the service line to be pulled out of and separated from the fitting of the dresser valve. The operator did not employ hand tools or other non-invasive methods to determine the exact location of the underground service. Loy clark reported they were performing communication work on october 19th, 2016. The loy clark employees were digging outside of the locate area that had been called in by loy clark for communications work (locate ticket number 16229204).
Detailed record list
Occurred At
2016-10-19 08:51:00
Year
2016
Report Received Date
2016-11-18 00:00:00
Iyear
2016.0
Report Number
20160118.0
Supplemental Number
16728.0
Report Type
Supplemental Final
Operator Id
13840
Name
Northwest Natural Gas Co
Operator Street Address
250 Sw Taylor St
Operator City Name
Portland
Operator State Abbreviation
OR
Operator Postal Code
97204
Local Datetime
2016-10-19 09:38:00
Location Street Address
500 Nw 23rd Ave
Location City Name
Portland
Location County Name
Multnomah
Location State Abbreviation
OR
Location Postal Code
97210-3712
Location Latitude
45.526403
Location Longitude
-122.698367
Nrc Rpt Datetime
2016-10-19 11:30:00
Nrc Rpt Num
1161960
Commodity Released Type
Natural Gas
Unintentional Release
52.0
Fatality Ind
No
Fatal
0
Injury Ind
Yes
Num Emp Injuries
0
Num Contr Injuries
0
Num Er Injuries
1
Num Worker Injuries
0
Num Gp Injuries
0
Injure
1
Ignite Ind
Yes
Explode Ind
Yes
Num Pub Evacuated
50.0
Incident Identified Datetime
2016-10-19 08:51:00
On Site Datetime
2016-10-19 09:10:00
Federal
No
Location Type
Public Property
Incident Area Type
Underground
Incident Area Subtype
Exposed Due To Excavation
Depth Of Cover
30.0
Crossing
No
Pipe Facility Type
Investor Owned
System Part Involved
Service
Installation Year
1985.0
Pipe Diameter
1.0
Pipe Specification
Unknown
Pipe Manufacturer
Unknown
Material Involved
Steel
Wt Steel
0.133
Release Type
Leak
Leak Type
Connection Failure
Class Location Type
Class 3 Location
Est Cost Oper Paid
15000000.0
Est Cost Prop Damage
35000.0
Est Cost Emergency
85000.0
Est Cost Other
0.0
Est Cost Unintentional Release
182.0
Prpty
15120182.0
Commercial Affected
15.0
Industrial Affected
0.0
Residences Affected
111.0
Accident Psig
50.0
Normal Psig
50.0
Mop Psig
57.0
Accident Pressure
Pressure Did Not Exceed Maop
Scada In Place Ind
No
Accident Identifier
Notification From Third Party That Caused The Incident
Investigation Status
No, the facility was not monitored by a controller(s) at the time of the incident
Employee Drug Test Ind
Yes
Num Employees Tested
5
Num Employees Failed
0
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
Notify Cga Dirt
No
Public Row Ind
Yes
Public Subtype
City Street
Excavator Type
Contractor
Excavator Equipment
Backhoe/trackhoe
Work Performed
Cable Tv
One Call Notified Ind
Yes
One Call Ticket Num
16229204
Locator Type
Contract Locator
Visible Marks
No
Service Interruption
Yes
Service Interruption Hours
32.0
Root Cause Category
Notification Issue
Root Cause Type
No Notification Made To The One-Call Center/811
Preparer Name
J** K*****
Preparer Title
Senior Manager Code Compliance
Preparer Email
J**@n********.com
Preparer Telephone
503-226-4211
Authorizer Name
J* R* G*******
Authorizer Title
Senior Manager Code Compliance
Authorizer Telephone
503-226-4211
Authorizer Email
J**@n********.com
Narrative
At approximately 8:51am on october 19, 2016 nw natural received notification of damage to a 1" service line at nw 23rd avenue and glisan street in portland. The service was damaged by loy clark during the course of their excavation for a third party. The natural gas ignited at 9:38am resulting in the loss of a structure at 500/510 nw 23rd avenue. A nw natural first responder arrived on site at 9:10am. Gas was controlled at 9:52am by closing a 2-inch valve located at the intersection of nw 22nd avenue and nw glisan street. Gas service was interrupted to 126 customers. All costs reported in part d are preliminary estimates and will be updated on supplemental reports. Historical perspective: on july 12th 2016, a locate request (ticket 16173103) for installing electric primary and service was called in by loy clark and, was accurately marked by locating inc. For the area where loy clark was excavating on october 19th, 2016. Marks from this ticket were still visible and accurate. On september 12th, 2016, a locate request for replacing telephone and cable tv mainline was called in by loy clark. The locate description for this request was close to, but did not cover, the area where loy clark was excavating on october 19th, 2016. Locate ticket number 16229204. On october 19th, 2016, during the course of excavation on part of the sidewalk on nw glisan within the area covered by the july 12th, 2016 locate, an employee with loy clark pipeline hit the gas service to 500 nw 23rd with a back hoe causing the service line to be pulled out of and separated from the fitting of the dresser valve. The operator did not employ hand tools or other non-invasive methods to determine the exact location of the underground service. Loy clark reported they were performing communication work on october 19th, 2016. The loy clark employees were digging outside of the locate area that had been called in by loy clark for communications work (locate ticket number 16229204).
| Occurred At | 2016-10-19 08:51:00 |
|---|---|
| Year | 2016 |
| Report Received Date | 2016-11-18 00:00:00 |
| Iyear | 2016.0 |
| Report Number | 20160118.0 |
| Supplemental Number | 16728.0 |
| Report Type | Supplemental Final |
| Operator Id | 13840 PHMSA Enforcement |
| Name | Northwest Natural Gas Co |
| Operator Street Address | 250 Sw Taylor St |
| Operator City Name | Portland |
| Operator State Abbreviation | OR |
| Operator Postal Code | 97204 |
| Local Datetime | 2016-10-19 09:38:00 |
| Location Street Address | 500 Nw 23rd Ave |
| Location City Name | Portland |
| Location County Name | Multnomah |
| Location State Abbreviation | OR |
| Location Postal Code | 97210-3712 |
| Location Latitude | 45.526403 Google Maps OpenStreetMap |
| Location Longitude | -122.698367 Google Maps OpenStreetMap |
| Nrc Rpt Datetime | 2016-10-19 11:30:00 |
| Nrc Rpt Num | 1161960 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 52.0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | Yes |
| Num Emp Injuries | 0 |
| Num Contr Injuries | 0 |
| Num Er Injuries | 1 |
| Num Worker Injuries | 0 |
| Num Gp Injuries | 0 |
| Injure | 1 |
| Ignite Ind | Yes |
| Explode Ind | Yes |
| Num Pub Evacuated | 50.0 |
| Incident Identified Datetime | 2016-10-19 08:51:00 |
| On Site Datetime | 2016-10-19 09:10:00 |
| Federal | No |
| Location Type | Public Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Exposed Due To Excavation |
| Depth Of Cover | 30.0 |
| Crossing | No |
| Pipe Facility Type | Investor Owned |
| System Part Involved | Service |
| Installation Year | 1985.0 |
| Pipe Diameter | 1.0 |
| Pipe Specification | Unknown |
| Pipe Manufacturer | Unknown |
| Material Involved | Steel |
| Wt Steel | 0.133 |
| Release Type | Leak |
| Leak Type | Connection Failure |
| Class Location Type | Class 3 Location |
| Est Cost Oper Paid | 15000000.0 |
| Est Cost Prop Damage | 35000.0 |
| Est Cost Emergency | 85000.0 |
| Est Cost Other | 0.0 |
| Est Cost Unintentional Release | 182.0 |
| Prpty | 15120182.0 |
| Commercial Affected | 15.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 111.0 |
| Accident Psig | 50.0 |
| Normal Psig | 50.0 |
| Mop Psig | 57.0 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Scada In Place Ind | No |
| Accident Identifier | Notification From Third Party That Caused The Incident |
| Investigation Status | No, the facility was not monitored by a controller(s) at the time of the incident |
| Employee Drug Test Ind | Yes |
| Num Employees Tested | 5 |
| Num Employees Failed | 0 |
| 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 |
| Notify Cga Dirt | No |
| Public Row Ind | Yes |
| Public Subtype | City Street |
| Excavator Type | Contractor |
| Excavator Equipment | Backhoe/trackhoe |
| Work Performed | Cable Tv |
| One Call Notified Ind | Yes |
| One Call Ticket Num | 16229204 |
| Locator Type | Contract Locator |
| Visible Marks | No |
| Service Interruption | Yes |
| Service Interruption Hours | 32.0 |
| Root Cause Category | Notification Issue |
| Root Cause Type | No Notification Made To The One-Call Center/811 |
| Preparer Name | J** K***** |
| Preparer Title | Senior Manager Code Compliance |
| Preparer Email | J**@n********.com |
| Preparer Telephone | 503-226-4211 |
| Authorizer Name | J* R* G******* |
| Authorizer Title | Senior Manager Code Compliance |
| Authorizer Telephone | 503-226-4211 |
| Authorizer Email | J**@n********.com |
| Narrative | At approximately 8:51am on october 19, 2016 nw natural received notification of damage to a 1" service line at nw 23rd avenue and glisan street in portland. The service was damaged by loy clark during the course of their excavation for a third party. The natural gas ignited at 9:38am resulting in the loss of a structure at 500/510 nw 23rd avenue. A nw natural first responder arrived on site at 9:10am. Gas was controlled at 9:52am by closing a 2-inch valve located at the intersection of nw 22nd avenue and nw glisan street. Gas service was interrupted to 126 customers. All costs reported in part d are preliminary estimates and will be updated on supplemental reports. Historical perspective: on july 12th 2016, a locate request (ticket 16173103) for installing electric primary and service was called in by loy clark and, was accurately marked by locating inc. For the area where loy clark was excavating on october 19th, 2016. Marks from this ticket were still visible and accurate. On september 12th, 2016, a locate request for replacing telephone and cable tv mainline was called in by loy clark. The locate description for this request was close to, but did not cover, the area where loy clark was excavating on october 19th, 2016. Locate ticket number 16229204. On october 19th, 2016, during the course of excavation on part of the sidewalk on nw glisan within the area covered by the july 12th, 2016 locate, an employee with loy clark pipeline hit the gas service to 500 nw 23rd with a back hoe causing the service line to be pulled out of and separated from the fitting of the dresser valve. The operator did not employ hand tools or other non-invasive methods to determine the exact location of the underground service. Loy clark reported they were performing communication work on october 19th, 2016. The loy clark employees were digging outside of the locate area that had been called in by loy clark for communications work (locate ticket number 16229204). |
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