Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2024-04-30 — AZ
Operator
Southwest Gas Corp
Cause
Other Outside Force Damage
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$250,000
Incident datetime
2024-04-30 00:00 UTC
Report number
Location
AZ, MARICOPA
Narrative
Acc- pl2024-0058 on april 15, 2024 at 10:35 southwest gas (swg) dispatch was notified by the phoenix fire department of a vehicle that had collided with regulator station (dr #423886) at the northwest corner of 27th avenue and northern avenue in phoenix, arizona. Construction crews responded and discovered a multiple-vehicle accident had caused one vehicle to collide with the regulator station and sheared off the above-ground 2-inch bypass pipe from the regulator station resulting in a release of gas. Gas flow was controlled utilizing three valves to isolate the damaged regulator station and gas off at 12:22. Approximately 555 individuals were evacuated from a school as a precaution by the fire department. Three people were transported to the hospital due to minor injuries sustained in the vehicle accidents. There were no outages, or fatalities due to the gas incident. The district regulator station was temporarily taken out of service for replacement / relocation at a later date. On april 15, 2024, the arizona corporation commission (acc) was telephonically notified at 11:27 of the incident involving the evacuation of the school and that estimated incident costs would exceed $139,700. On april 15, 2024, PHMSA/nrc was telephonically notified at 11:40 that incident costs would exceed $139,700 and was assigned nrc report #1396485. On april 16, 2024, a follow-up PHMSA/nrc was telephonically updated at 14:11 and was assigned nrc report #1396605.
Detailed record list
Report Received Date
2024-04-30 00:00:00
Iyear
2024.0
Report Number
20240027.0
Supplemental Number
39503.0
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
89113.0
Time Zone
Mountain
Daylight Savings Ind
No
Location Street Address
27th Ave & Northern Ave
Location City Name
Phoenix
Location County Name
Maricopa
Location State Abbreviation
AZ
Location Postal Code
85051.0
Location Latitude
33.55328089
Location Longitude
-112.1171602
Flow Cont Key Crit Ind
Yes
Nrc Rpt Num
1396485.0
Additional Nrc Report Numbers
1396605.0
Commodity Released Type
Natural Gas
Unintentional Release
11773.13
Intentional Release
0.29
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
No
Num Pub Evacuated
555.0
Federal
No
Location Type
Utility Right-Of-Way / Easement
Incident Area Type
Aboveground
Incident Area Subtype
Typical Aboveground Facility Piping Or Appurtenance (E.g. Value Or Regulator Station, Outdoor Meter Set)
Crossing
No
Pipe Facility Type
Investor Owned
System Part Involved
District Regulator/metering Station
Installation Year
2019.0
Material Involved
Steel
Steel Seam Type
Longitudinal Erw - High Frequency
Wt Steel
0.375
Release Type
Other
Release Type Details
District Regulator Station 2-Inch Bypass Broken When Struck By Third-Party Vehicle.
Class Location Type
Class 3 Location
Est Cost Oper Paid
20000.0
Est Cost Prop Damage
250000.0
Est Cost Emergency
21512.0
Est Cost Other
0.0
Gas Cost In Mcf
1.1414
Est Cost Unintentional Release
13438.0
Est Cost Intentional Release
0.0
Prpty
304950.0
Commercial Affected
0.0
Industrial Affected
0.0
Residences Affected
0.0
Num Persons Hosp Not Ovnght
3.0
Num Injured Treated By Emt
0.0
Num Resident Building Affctd
0.0
Num Business Building Affctd
4.0
Accident Psig
388.0
Normal Psig
388.0
Mop Psig
400.0
Mop Cfr Section
192.619(A)(4)
Maop Established Date
1987-05-14 00:00:00
Accident Pressure
Pressure Did Not Exceed Maop
Gas Odorized System Type
Injection Pump
Gas Odorized Level
0.2
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
No
Scada Conf Ind
No
Accident Identifier
Notification From Emergency Responder
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
Reg station was hit by a 3rd party vehicle.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Other Outside Force Damage
Cause Details
Damage By Car, Truck, Or Other Motorized Vehicle/equipment Not Engaged In Excavation
Outside Force Type
Damage By Car, Truck, Or Other Motorized Vehicle/equipment Not Engaged In Excavation
Vehicle Subtype
Third Party
Driver Issued Citation Ind
Unknown
Driver In Control Ind
Unknown
Estimated Speed
Unknown
Vehicle Type
Small Truck
Vehicle Travel From
Roadway
Vehicle Travel Distance Ft
10
Protections Installed Ind
Yes
Protection Bollards Post Ind
Yes
Preparer Name
S**** L* B****
Preparer Title
Administrator Division Compliance
Preparer Email
S**********@s****.com
Preparer Telephone
6027230987
Preparer Fax
6024845322
Local Contact Name
S**** L* B****
Local Contact Email
S**********@s****.com
Local Contact Telephone
6027230987
Authorizer Name
R***** M****
Authorizer Title
Director Central Support
Authorizer Telephone
6024845367
Authorizer Email
R***********@s****.com
Narrative
Acc- pl2024-0058 on april 15, 2024 at 10:35 southwest gas (swg) dispatch was notified by the phoenix fire department of a vehicle that had collided with regulator station (dr #423886) at the northwest corner of 27th avenue and northern avenue in phoenix, arizona. Construction crews responded and discovered a multiple-vehicle accident had caused one vehicle to collide with the regulator station and sheared off the above-ground 2-inch bypass pipe from the regulator station resulting in a release of gas. Gas flow was controlled utilizing three valves to isolate the damaged regulator station and gas off at 12:22. Approximately 555 individuals were evacuated from a school as a precaution by the fire department. Three people were transported to the hospital due to minor injuries sustained in the vehicle accidents. There were no outages, or fatalities due to the gas incident. The district regulator station was temporarily taken out of service for replacement / relocation at a later date. On april 15, 2024, the arizona corporation commission (acc) was telephonically notified at 11:27 of the incident involving the evacuation of the school and that estimated incident costs would exceed $139,700. On april 15, 2024, PHMSA/nrc was telephonically notified at 11:40 that incident costs would exceed $139,700 and was assigned nrc report #1396485. On april 16, 2024, a follow-up PHMSA/nrc was telephonically updated at 14:11 and was assigned nrc report #1396605.
| Report Received Date | 2024-04-30 00:00:00 |
|---|---|
| Iyear | 2024.0 |
| Report Number | 20240027.0 |
| Supplemental Number | 39503.0 |
| 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 | 89113.0 |
| Time Zone | Mountain |
| Daylight Savings Ind | No |
| Location Street Address | 27th Ave & Northern Ave |
| Location City Name | Phoenix |
| Location County Name | Maricopa |
| Location State Abbreviation | AZ |
| Location Postal Code | 85051.0 |
| Location Latitude | 33.55328089 Google Maps OpenStreetMap |
| Location Longitude | -112.1171602 Google Maps OpenStreetMap |
| Flow Cont Key Crit Ind | Yes |
| Nrc Rpt Num | 1396485.0 NRC Report How to search |
| Additional Nrc Report Numbers | 1396605.0 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 11773.13 |
| Intentional Release | 0.29 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | No |
| Num Pub Evacuated | 555.0 |
| Federal | No |
| Location Type | Utility Right-Of-Way / Easement |
| Incident Area Type | Aboveground |
| Incident Area Subtype | Typical Aboveground Facility Piping Or Appurtenance (E.g. Value Or Regulator Station, Outdoor Meter Set) |
| Crossing | No |
| Pipe Facility Type | Investor Owned |
| System Part Involved | District Regulator/metering Station |
| Installation Year | 2019.0 |
| Material Involved | Steel |
| Steel Seam Type | Longitudinal Erw - High Frequency |
| Wt Steel | 0.375 |
| Release Type | Other |
| Release Type Details | District Regulator Station 2-Inch Bypass Broken When Struck By Third-Party Vehicle. |
| Class Location Type | Class 3 Location |
| Est Cost Oper Paid | 20000.0 |
| Est Cost Prop Damage | 250000.0 |
| Est Cost Emergency | 21512.0 |
| Est Cost Other | 0.0 |
| Gas Cost In Mcf | 1.1414 |
| Est Cost Unintentional Release | 13438.0 |
| Est Cost Intentional Release | 0.0 |
| Prpty | 304950.0 |
| Commercial Affected | 0.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 0.0 |
| Num Persons Hosp Not Ovnght | 3.0 |
| Num Injured Treated By Emt | 0.0 |
| Num Resident Building Affctd | 0.0 |
| Num Business Building Affctd | 4.0 |
| Accident Psig | 388.0 |
| Normal Psig | 388.0 |
| Mop Psig | 400.0 |
| Mop Cfr Section | 192.619(A)(4) View CFR 49 §192 |
| Maop Established Date | 1987-05-14 00:00:00 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Gas Odorized System Type | Injection Pump |
| Gas Odorized Level | 0.2 |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | No |
| Scada Conf Ind | No |
| Accident Identifier | Notification From Emergency Responder |
| 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 | Reg station was hit by a 3rd party vehicle. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Other Outside Force Damage |
| Cause Details | Damage By Car, Truck, Or Other Motorized Vehicle/equipment Not Engaged In Excavation |
| Outside Force Type | Damage By Car, Truck, Or Other Motorized Vehicle/equipment Not Engaged In Excavation |
| Vehicle Subtype | Third Party |
| Driver Issued Citation Ind | Unknown |
| Driver In Control Ind | Unknown |
| Estimated Speed | Unknown |
| Vehicle Type | Small Truck |
| Vehicle Travel From | Roadway |
| Vehicle Travel Distance Ft | 10 |
| Protections Installed Ind | Yes |
| Protection Bollards Post Ind | Yes |
| Preparer Name | S**** L* B**** |
| Preparer Title | Administrator Division Compliance |
| Preparer Email | S**********@s****.com |
| Preparer Telephone | 6027230987 |
| Preparer Fax | 6024845322 |
| Local Contact Name | S**** L* B**** |
| Local Contact Email | S**********@s****.com |
| Local Contact Telephone | 6027230987 |
| Authorizer Name | R***** M**** |
| Authorizer Title | Director Central Support |
| Authorizer Telephone | 6024845367 |
| Authorizer Email | R***********@s****.com |
| Narrative | Acc- pl2024-0058 on april 15, 2024 at 10:35 southwest gas (swg) dispatch was notified by the phoenix fire department of a vehicle that had collided with regulator station (dr #423886) at the northwest corner of 27th avenue and northern avenue in phoenix, arizona. Construction crews responded and discovered a multiple-vehicle accident had caused one vehicle to collide with the regulator station and sheared off the above-ground 2-inch bypass pipe from the regulator station resulting in a release of gas. Gas flow was controlled utilizing three valves to isolate the damaged regulator station and gas off at 12:22. Approximately 555 individuals were evacuated from a school as a precaution by the fire department. Three people were transported to the hospital due to minor injuries sustained in the vehicle accidents. There were no outages, or fatalities due to the gas incident. The district regulator station was temporarily taken out of service for replacement / relocation at a later date. On april 15, 2024, the arizona corporation commission (acc) was telephonically notified at 11:27 of the incident involving the evacuation of the school and that estimated incident costs would exceed $139,700. On april 15, 2024, PHMSA/nrc was telephonically notified at 11:40 that incident costs would exceed $139,700 and was assigned nrc report #1396485. On april 16, 2024, a follow-up PHMSA/nrc was telephonically updated at 14:11 and was assigned nrc report #1396605. |
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