Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2019-02-08 — AZ
Operator
Southwest Gas Corp
Cause
Locating Issue
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$1,680
Incident datetime
2019-02-08 13:15
Report number
Location
AZ, PIMA
Narrative
On february 8, 2019, a four inch steel distribution main located at prudence road and calle madero was hit and damaged by a third party excavator. Thirty five individuals were evacuated from multiple buildings due to the proximity of escaping gas. A valve isolation plan was utilized to safely control the flow of gas and resulted in an outage of 956 accounts. Repairs to the damaged facility were completed 7.5 hours after initial shutdown and the isolated sections were placed back into service. On february 9, 2019, at 1830 hours, customer relights were completed and door tags were hung for the remaining cgi's. There were no injuries or fatalities as a result of this incident.
Detailed record list
Occurred At
2019-02-08 13:15:00
Year
2019
Report Received Date
2019-03-05 00:00:00
Iyear
2019.0
Report Number
20190022.0
Supplemental Number
31738.0
Report Type
Original Final
Operator Id
18536
Name
Southwest Gas Corp
Operator Street Address
8360 S. Durango Drive
Operator City Name
Las Vegas
Operator State Abbreviation
NV
Operator Postal Code
89113
Local Datetime
2019-02-08 13:15:00
Location Street Address
Prudence And Calle Madero
Location City Name
Tucson
Location County Name
Pima
Location State Abbreviation
AZ
Location Postal Code
85710
Location Latitude
32.2178
Location Longitude
-110.83233
Nrc Rpt Datetime
2019-02-08 15:20:00
Nrc Rpt Num
1237225
Commodity Released Type
Natural Gas
Unintentional Release
249.0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
35.0
Incident Identified Datetime
2019-02-08 13:15:00
On Site Datetime
2019-02-08 13:28:00
Federal
No
Location Type
Utility Right-Of-Way / Easement
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
84.0
Crossing
No
Pipe Facility Type
Privately Owned
System Part Involved
Main
Installation Year
1986.0
Pipe Diameter
4.5
Pipe Specification
Api 5lx
Pipe Manufacturer
Unknown
Material Involved
Steel
Steel Seam Type
Other
Steel Seam Type Details
Erw
Wt Steel
0.188
Release Type
Mechanical Puncture
Puncture Axial
2.0
Puncture Circum
2.0
Class Location Type
Class 3 Location
Est Cost Oper Paid
0.0
Est Cost Prop Damage
1680.0
Est Cost Emergency
1000.0
Est Cost Other
47320.0
Est Cost Other Details
Relights
Est Cost Unintentional Release
1494.0
Prpty
51494.0
Commercial Affected
63.0
Industrial Affected
0.0
Residences Affected
893.0
Accident Psig
60.0
Normal Psig
60.0
Mop Psig
60.0
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
No
Contractor Drug Test Ind
Yes
Num Contractors Tested
1
Num Contractors Failed
1
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 Util Easement Row Ind
Yes
Excavator Type
Utility
Excavator Equipment
Auger
Work Performed
Pole
One Call Notified Ind
Yes
One Call Ticket Num
2.01901e+12
Locator Type
Contract Locator
Visible Marks
Yes
Service Interruption
Yes
Service Interruption Hours
8.0
Root Cause Category
Locating Issue
Root Cause Type
Facility Not Marked Due To Incomplete Marks At Damage Location
Preparer Name
M*** H********
Preparer Title
Administrator-Division Compliance
Preparer Email
M*************@s****.com
Preparer Telephone
520-794-6108
Preparer Fax
520-794-6166
Authorizer Name
T*** D*****
Authorizer Title
Director-Gas Operations
Authorizer Telephone
520-794-6066
Authorizer Email
T**********@s****.com
Narrative
On february 8, 2019, a four inch steel distribution main located at prudence road and calle madero was hit and damaged by a third party excavator. Thirty five individuals were evacuated from multiple buildings due to the proximity of escaping gas. A valve isolation plan was utilized to safely control the flow of gas and resulted in an outage of 956 accounts. Repairs to the damaged facility were completed 7.5 hours after initial shutdown and the isolated sections were placed back into service. On february 9, 2019, at 1830 hours, customer relights were completed and door tags were hung for the remaining cgi's. There were no injuries or fatalities as a result of this incident.
| Occurred At | 2019-02-08 13:15:00 |
|---|---|
| Year | 2019 |
| Report Received Date | 2019-03-05 00:00:00 |
| Iyear | 2019.0 |
| Report Number | 20190022.0 |
| Supplemental Number | 31738.0 |
| Report Type | Original Final |
| Operator Id | 18536 PHMSA Enforcement |
| Name | Southwest Gas Corp |
| Operator Street Address | 8360 S. Durango Drive |
| Operator City Name | Las Vegas |
| Operator State Abbreviation | NV |
| Operator Postal Code | 89113 |
| Local Datetime | 2019-02-08 13:15:00 |
| Location Street Address | Prudence And Calle Madero |
| Location City Name | Tucson |
| Location County Name | Pima |
| Location State Abbreviation | AZ |
| Location Postal Code | 85710 |
| Location Latitude | 32.2178 Google Maps OpenStreetMap |
| Location Longitude | -110.83233 Google Maps OpenStreetMap |
| Nrc Rpt Datetime | 2019-02-08 15:20:00 |
| Nrc Rpt Num | 1237225 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 249.0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 35.0 |
| Incident Identified Datetime | 2019-02-08 13:15:00 |
| On Site Datetime | 2019-02-08 13:28:00 |
| Federal | No |
| Location Type | Utility Right-Of-Way / Easement |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 84.0 |
| Crossing | No |
| Pipe Facility Type | Privately Owned |
| System Part Involved | Main |
| Installation Year | 1986.0 |
| Pipe Diameter | 4.5 |
| Pipe Specification | Api 5lx |
| Pipe Manufacturer | Unknown |
| Material Involved | Steel |
| Steel Seam Type | Other |
| Steel Seam Type Details | Erw |
| Wt Steel | 0.188 |
| Release Type | Mechanical Puncture |
| Puncture Axial | 2.0 |
| Puncture Circum | 2.0 |
| Class Location Type | Class 3 Location |
| Est Cost Oper Paid | 0.0 |
| Est Cost Prop Damage | 1680.0 |
| Est Cost Emergency | 1000.0 |
| Est Cost Other | 47320.0 |
| Est Cost Other Details | Relights |
| Est Cost Unintentional Release | 1494.0 |
| Prpty | 51494.0 |
| Commercial Affected | 63.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 893.0 |
| Accident Psig | 60.0 |
| Normal Psig | 60.0 |
| Mop Psig | 60.0 |
| 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 | No |
| Contractor Drug Test Ind | Yes |
| Num Contractors Tested | 1 |
| Num Contractors Failed | 1 |
| 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 Util Easement Row Ind | Yes |
| Excavator Type | Utility |
| Excavator Equipment | Auger |
| Work Performed | Pole |
| One Call Notified Ind | Yes |
| One Call Ticket Num | 2.01901e+12 |
| Locator Type | Contract Locator |
| Visible Marks | Yes |
| Service Interruption | Yes |
| Service Interruption Hours | 8.0 |
| Root Cause Category | Locating Issue |
| Root Cause Type | Facility Not Marked Due To Incomplete Marks At Damage Location |
| Preparer Name | M*** H******** |
| Preparer Title | Administrator-Division Compliance |
| Preparer Email | M*************@s****.com |
| Preparer Telephone | 520-794-6108 |
| Preparer Fax | 520-794-6166 |
| Authorizer Name | T*** D***** |
| Authorizer Title | Director-Gas Operations |
| Authorizer Telephone | 520-794-6066 |
| Authorizer Email | T**********@s****.com |
| Narrative | On february 8, 2019, a four inch steel distribution main located at prudence road and calle madero was hit and damaged by a third party excavator. Thirty five individuals were evacuated from multiple buildings due to the proximity of escaping gas. A valve isolation plan was utilized to safely control the flow of gas and resulted in an outage of 956 accounts. Repairs to the damaged facility were completed 7.5 hours after initial shutdown and the isolated sections were placed back into service. On february 9, 2019, at 1830 hours, customer relights were completed and door tags were hung for the remaining cgi's. There were no injuries or fatalities as a result of this incident. |
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