Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2012-11-19 — ID
Operator
Avista Corp
Cause
Notification Issue
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$1,050
Incident datetime
2012-11-19 13:35
Report number
Location
ID, NEZ PERCE COUNTY
Narrative
On 11/19/2012 at approximately 1331-hours (pacific standard time) ml albright & sons construction dug into and severed a 4-inch steel high-pressure natural gas pipe within 5th street, between the intersections of beachey and dike bypass, in lewiston, id. The mainline, owned and operated by avista utilities, was operating at 289 psig (300 psig - system maop) at the time of the incident. The excavator dig-in resulted in blowing gas that ignited in explosion, which is believed to have been caused by an excavator backfire. The resulting fire totaled the excavator equipment involved in the incident and caused additional damage to a railroad cross-arm, an adjacent warehouse structure and local electric distribution facilities (also owned and operated by avista utilities). It is avista's understanding that the contractor was operating using locates from a one-call ticket that had expired 14-days prior to the incident and marks were no longer fully visible. Avista dispatch was notified of the incident at approximately 1335-hours. Avista personnel were en-route by 1338-hours and on location by 1351-hours. Gas flow was isolated at 1355-hours by closing three system eop valves (avista valve #s lec 128, lec 130 & lec 542) within close vicinity to the area. At this time local fire department responders were able to contain the fire. Police also responded and local media followed the incident closely. There were no deaths and only minor injuries (no hospitalization required) as a result of the event. Avista gas construction crews worked to repair damaged gas facilities over the next 9-days following the dig-in. The system was repaired, re-tested and restored to full operation by 1530-hours on 11/28/2012. Only one avista natural gas customer lost service as a result of these events. The resulting operator and non-operator damage costs from the event are estimated to exceed $50,000 which is the reason for this reportable. The details related to these costs have been provided based upon the best available information at this time. We plan to report supplemental information if necessary when it becomes available.
Detailed record list
Occurred At
2012-11-19 13:35:00
Year
2012
Report Received Date
2012-12-18 00:00:00
Iyear
2012.0
Report Number
20120104.0
Supplemental Number
15654.0
Report Type
Supplemental Final
Operator Id
31232
Name
Avista Corp
Operator Street Address
1411 East Mission Avenue
Operator City Name
Spokane
Operator State Abbreviation
WA
Operator Postal Code
99220
Local Datetime
2012-11-19 13:31:00
Location Street Address
5th Street Between Beachey And Dike Bypass (North Of Rr Tracks)
Location City Name
Lewiston
Location County Name
Nez Perce County
Location State Abbreviation
ID
Location Postal Code
83501-0000
Location Latitude
46.42374
Location Longitude
-117.02699
Nrc Rpt Datetime
2012-11-19 15:11:00
Nrc Rpt Num
1031098
Commodity Released Type
Natural Gas
Unintentional Release
411.0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
Yes
Explode Ind
Yes
Num Pub Evacuated
30.0
Incident Identified Datetime
2012-11-19 13:35:00
On Site Datetime
2012-11-19 13:51:00
Federal
No
Location Type
Public Property
Incident Area Type
Underground
Incident Area Subtype
Exposed Due To Excavation
Depth Of Cover
60.0
Crossing
No
Pipe Facility Type
Privately Owned
System Part Involved
Main
Installation Year
1956.0
Pipe Diameter
4.5
Pipe Specification
Unknown
Pipe Manufacturer
Unknown
Material Involved
Steel
Steel Seam Type
Other
Steel Seam Type Details
Unknown
Wt Steel
0.188
Release Type
Mechanical Puncture
Puncture Axial
1.0
Puncture Circum
12.6
Class Location Type
Class 3 Location
Est Cost Oper Paid
237000.0
Est Cost Prop Damage
1050.0
Est Cost Emergency
4320.0
Est Cost Other
6380.0
Est Cost Other Details
Electric Facilities Owned/operated By Avista Utilities
Est Cost Unintentional Release
1483.0
Prpty
250233.0
Commercial Affected
1.0
Industrial Affected
0.0
Residences Affected
0.0
Accident Psig
289.0
Normal Psig
289.0
Mop Psig
300.0
Accident Pressure
Pressure Did Not Exceed Maop
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
Contractor Working For The Operator
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
Apparent cause was an excavator dig-in
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
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
2012420218
Locator Type
Contract Locator
Visible Marks
No
Service Interruption
Yes
Service Interruption Hours
218.0
Root Cause Category
Notification Issue
Root Cause Type
No Notification Made To The One-Call Center/811
Preparer Name
S*** R* S******
Preparer Title
Natural Gas Distribution Engineer
Preparer Email
S***********@a*********.com
Preparer Telephone
509-495-4883
Preparer Fax
509-777-9855
Authorizer Name
J*** M********
Authorizer Title
Gas Compliance Manger
Authorizer Telephone
509-495-2760
Authorizer Email
J*************@a*********.com
Narrative
On 11/19/2012 at approximately 1331-hours (pacific standard time) ml albright & sons construction dug into and severed a 4-inch steel high-pressure natural gas pipe within 5th street, between the intersections of beachey and dike bypass, in lewiston, id. The mainline, owned and operated by avista utilities, was operating at 289 psig (300 psig - system maop) at the time of the incident. The excavator dig-in resulted in blowing gas that ignited in explosion, which is believed to have been caused by an excavator backfire. The resulting fire totaled the excavator equipment involved in the incident and caused additional damage to a railroad cross-arm, an adjacent warehouse structure and local electric distribution facilities (also owned and operated by avista utilities). It is avista's understanding that the contractor was operating using locates from a one-call ticket that had expired 14-days prior to the incident and marks were no longer fully visible. Avista dispatch was notified of the incident at approximately 1335-hours. Avista personnel were en-route by 1338-hours and on location by 1351-hours. Gas flow was isolated at 1355-hours by closing three system eop valves (avista valve #s lec 128, lec 130 & lec 542) within close vicinity to the area. At this time local fire department responders were able to contain the fire. Police also responded and local media followed the incident closely. There were no deaths and only minor injuries (no hospitalization required) as a result of the event. Avista gas construction crews worked to repair damaged gas facilities over the next 9-days following the dig-in. The system was repaired, re-tested and restored to full operation by 1530-hours on 11/28/2012. Only one avista natural gas customer lost service as a result of these events. The resulting operator and non-operator damage costs from the event are estimated to exceed $50,000 which is the reason for this reportable. The details related to these costs have been provided based upon the best available information at this time. We plan to report supplemental information if necessary when it becomes available.
| Occurred At | 2012-11-19 13:35:00 |
|---|---|
| Year | 2012 |
| Report Received Date | 2012-12-18 00:00:00 |
| Iyear | 2012.0 |
| Report Number | 20120104.0 |
| Supplemental Number | 15654.0 |
| Report Type | Supplemental Final |
| Operator Id | 31232 PHMSA Enforcement |
| Name | Avista Corp |
| Operator Street Address | 1411 East Mission Avenue |
| Operator City Name | Spokane |
| Operator State Abbreviation | WA |
| Operator Postal Code | 99220 |
| Local Datetime | 2012-11-19 13:31:00 |
| Location Street Address | 5th Street Between Beachey And Dike Bypass (North Of Rr Tracks) |
| Location City Name | Lewiston |
| Location County Name | Nez Perce County |
| Location State Abbreviation | ID |
| Location Postal Code | 83501-0000 |
| Location Latitude | 46.42374 Google Maps OpenStreetMap |
| Location Longitude | -117.02699 Google Maps OpenStreetMap |
| Nrc Rpt Datetime | 2012-11-19 15:11:00 |
| Nrc Rpt Num | 1031098 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 411.0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | Yes |
| Explode Ind | Yes |
| Num Pub Evacuated | 30.0 |
| Incident Identified Datetime | 2012-11-19 13:35:00 |
| On Site Datetime | 2012-11-19 13:51:00 |
| Federal | No |
| Location Type | Public Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Exposed Due To Excavation |
| Depth Of Cover | 60.0 |
| Crossing | No |
| Pipe Facility Type | Privately Owned |
| System Part Involved | Main |
| Installation Year | 1956.0 |
| Pipe Diameter | 4.5 |
| Pipe Specification | Unknown |
| Pipe Manufacturer | Unknown |
| Material Involved | Steel |
| Steel Seam Type | Other |
| Steel Seam Type Details | Unknown |
| Wt Steel | 0.188 |
| Release Type | Mechanical Puncture |
| Puncture Axial | 1.0 |
| Puncture Circum | 12.6 |
| Class Location Type | Class 3 Location |
| Est Cost Oper Paid | 237000.0 |
| Est Cost Prop Damage | 1050.0 |
| Est Cost Emergency | 4320.0 |
| Est Cost Other | 6380.0 |
| Est Cost Other Details | Electric Facilities Owned/operated By Avista Utilities |
| Est Cost Unintentional Release | 1483.0 |
| Prpty | 250233.0 |
| Commercial Affected | 1.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 0.0 |
| Accident Psig | 289.0 |
| Normal Psig | 289.0 |
| Mop Psig | 300.0 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| 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 | Contractor Working For The Operator |
| 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 | Apparent cause was an excavator dig-in |
| 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 | 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 | 2012420218 |
| Locator Type | Contract Locator |
| Visible Marks | No |
| Service Interruption | Yes |
| Service Interruption Hours | 218.0 |
| Root Cause Category | Notification Issue |
| Root Cause Type | No Notification Made To The One-Call Center/811 |
| Preparer Name | S*** R* S****** |
| Preparer Title | Natural Gas Distribution Engineer |
| Preparer Email | S***********@a*********.com |
| Preparer Telephone | 509-495-4883 |
| Preparer Fax | 509-777-9855 |
| Authorizer Name | J*** M******** |
| Authorizer Title | Gas Compliance Manger |
| Authorizer Telephone | 509-495-2760 |
| Authorizer Email | J*************@a*********.com |
| Narrative | On 11/19/2012 at approximately 1331-hours (pacific standard time) ml albright & sons construction dug into and severed a 4-inch steel high-pressure natural gas pipe within 5th street, between the intersections of beachey and dike bypass, in lewiston, id. The mainline, owned and operated by avista utilities, was operating at 289 psig (300 psig - system maop) at the time of the incident. The excavator dig-in resulted in blowing gas that ignited in explosion, which is believed to have been caused by an excavator backfire. The resulting fire totaled the excavator equipment involved in the incident and caused additional damage to a railroad cross-arm, an adjacent warehouse structure and local electric distribution facilities (also owned and operated by avista utilities). It is avista's understanding that the contractor was operating using locates from a one-call ticket that had expired 14-days prior to the incident and marks were no longer fully visible. Avista dispatch was notified of the incident at approximately 1335-hours. Avista personnel were en-route by 1338-hours and on location by 1351-hours. Gas flow was isolated at 1355-hours by closing three system eop valves (avista valve #s lec 128, lec 130 & lec 542) within close vicinity to the area. At this time local fire department responders were able to contain the fire. Police also responded and local media followed the incident closely. There were no deaths and only minor injuries (no hospitalization required) as a result of the event. Avista gas construction crews worked to repair damaged gas facilities over the next 9-days following the dig-in. The system was repaired, re-tested and restored to full operation by 1530-hours on 11/28/2012. Only one avista natural gas customer lost service as a result of these events. The resulting operator and non-operator damage costs from the event are estimated to exceed $50,000 which is the reason for this reportable. The details related to these costs have been provided based upon the best available information at this time. We plan to report supplemental information if necessary when it becomes available. |
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