Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2011-11-01 — NV
Operator
Southwest Gas Corp
Cause
Locating Issue
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$855
Incident datetime
2011-11-01 01:54
Report number
Location
NV, CLARK
Narrative
An operator working for c.G. And b. Enterprises struck and damaged a six-inch pe main with a trackhoe while excavating to install a water line in the intersection of saint rose parkway and eastern avenue in henderson. Line location marks were provided for this section of main, however, the marks were not within twenty-four inches of the facility. No death or injury resulted from the incident and service to 2317 active customers was restored after the main was repaired. The incident was telephonically reported to the national response center when the estimated incident cost to southwest gas was determined to exceed 50,000 dollars. Supplemental: following the report submitted on november 29, 2011, additional details were discovered. After the excavator failed to manually determine the location of the distribution main within the area marked by southwest gas, the excavator did not contact the one-call center or southwest gas to request additional location information as required. Instead, the excavator began powered excavation operations and damaged the distribution main. Supplemental: following the report submitted on december 9, 2011, additional details were discovered. The excavator was not required by state law to request additional location informaion. Accordingly, the predominant cause was incorrect facility records/maps.
Detailed record list
Occurred At
2011-11-01 01:54:00
Year
2011
Report Received Date
2011-11-29 00:00:00
Iyear
2011.0
Report Number
20110388.0
Supplemental Number
15428.0
Report Type
Supplemental 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
2011-11-01 01:23:00
Location Street Address
Saint Rose Parkway And Eastern Avenue
Location City Name
Henderson
Location County Name
Clark
Location State Abbreviation
NV
Location Postal Code
89052
Location Latitude
36.00706
Location Longitude
-115.11393
Nrc Rpt Datetime
2011-11-09 08:19:00
Nrc Rpt Num
995019
Commodity Released Type
Natural Gas
Unintentional Release
646.0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0.0
Incident Identified Datetime
2011-11-01 01:54:00
On Site Datetime
2011-11-01 01:54:00
Federal
No
Location Type
Public Property
Incident Area Type
Underground
Incident Area Subtype
Exposed Due To Excavation
Depth Of Cover
96.0
Crossing
No
Pipe Facility Type
Privately Owned
System Part Involved
Main
Installation Year
1995.0
Pipe Diameter
6.625
Pipe Specification
Astm D2513
Pipe Manufacturer
Phillips
Material Involved
Plastic
Plastic Type
Polyethylene (Pe)
Wt Plastic
0.602
Material Pe Pipe Code
3408
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
855.0
Est Cost Emergency
71620.0
Est Cost Other
0.0
Est Cost Unintentional Release
2396.0
Prpty
74871.0
Commercial Affected
52.0
Industrial Affected
0.0
Residences Affected
2265.0
Accident Psig
55.0
Normal Psig
55.0
Mop Psig
60.0
Accident Pressure
Pressure Did Not Exceed Maop
Scada In Place Ind
No
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Contractor Working For The Operator
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
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
State Highway
Excavator Type
Contractor
Excavator Equipment
Backhoe/trackhoe
Work Performed
Water
One Call Notified Ind
Yes
One Call Ticket Num
336024
One Call Center Name
Usa North
Locator Type
Contract Locator
Visible Marks
Yes
Service Interruption
Yes
Service Interruption Hours
16.0
Root Cause Category
Locating Issue
Root Cause Type
Facility Not Marked Due To Incorrect Facility Records/maps
Preparer Name
K**** E******
Preparer Title
Administrator Of Compliance
Preparer Email
K************@s****.com
Preparer Telephone
(702) 365-2324
Preparer Fax
(702) 221-4116
Authorizer Name
P*** A*****
Authorizer Title
Director Of Gas Operations
Authorizer Telephone
(702) 365-2207
Authorizer Email
P**********@s****.com
Narrative
An operator working for c.G. And b. Enterprises struck and damaged a six-inch pe main with a trackhoe while excavating to install a water line in the intersection of saint rose parkway and eastern avenue in henderson. Line location marks were provided for this section of main, however, the marks were not within twenty-four inches of the facility. No death or injury resulted from the incident and service to 2317 active customers was restored after the main was repaired. The incident was telephonically reported to the national response center when the estimated incident cost to southwest gas was determined to exceed 50,000 dollars. Supplemental: following the report submitted on november 29, 2011, additional details were discovered. After the excavator failed to manually determine the location of the distribution main within the area marked by southwest gas, the excavator did not contact the one-call center or southwest gas to request additional location information as required. Instead, the excavator began powered excavation operations and damaged the distribution main. Supplemental: following the report submitted on december 9, 2011, additional details were discovered. The excavator was not required by state law to request additional location informaion. Accordingly, the predominant cause was incorrect facility records/maps.
| Occurred At | 2011-11-01 01:54:00 |
|---|---|
| Year | 2011 |
| Report Received Date | 2011-11-29 00:00:00 |
| Iyear | 2011.0 |
| Report Number | 20110388.0 |
| Supplemental Number | 15428.0 |
| Report Type | Supplemental 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 | 2011-11-01 01:23:00 |
| Location Street Address | Saint Rose Parkway And Eastern Avenue |
| Location City Name | Henderson |
| Location County Name | Clark |
| Location State Abbreviation | NV |
| Location Postal Code | 89052 |
| Location Latitude | 36.00706 Google Maps OpenStreetMap |
| Location Longitude | -115.11393 Google Maps OpenStreetMap |
| Nrc Rpt Datetime | 2011-11-09 08:19:00 |
| Nrc Rpt Num | 995019 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 646.0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0.0 |
| Incident Identified Datetime | 2011-11-01 01:54:00 |
| On Site Datetime | 2011-11-01 01:54:00 |
| Federal | No |
| Location Type | Public Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Exposed Due To Excavation |
| Depth Of Cover | 96.0 |
| Crossing | No |
| Pipe Facility Type | Privately Owned |
| System Part Involved | Main |
| Installation Year | 1995.0 |
| Pipe Diameter | 6.625 |
| Pipe Specification | Astm D2513 |
| Pipe Manufacturer | Phillips |
| Material Involved | Plastic |
| Plastic Type | Polyethylene (Pe) |
| Wt Plastic | 0.602 |
| Material Pe Pipe Code | 3408 |
| 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 | 855.0 |
| Est Cost Emergency | 71620.0 |
| Est Cost Other | 0.0 |
| Est Cost Unintentional Release | 2396.0 |
| Prpty | 74871.0 |
| Commercial Affected | 52.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 2265.0 |
| Accident Psig | 55.0 |
| Normal Psig | 55.0 |
| Mop Psig | 60.0 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Scada In Place Ind | No |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Contractor Working For The Operator |
| 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 | 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 | State Highway |
| Excavator Type | Contractor |
| Excavator Equipment | Backhoe/trackhoe |
| Work Performed | Water |
| One Call Notified Ind | Yes |
| One Call Ticket Num | 336024 |
| One Call Center Name | Usa North |
| Locator Type | Contract Locator |
| Visible Marks | Yes |
| Service Interruption | Yes |
| Service Interruption Hours | 16.0 |
| Root Cause Category | Locating Issue |
| Root Cause Type | Facility Not Marked Due To Incorrect Facility Records/maps |
| Preparer Name | K**** E****** |
| Preparer Title | Administrator Of Compliance |
| Preparer Email | K************@s****.com |
| Preparer Telephone | (702) 365-2324 |
| Preparer Fax | (702) 221-4116 |
| Authorizer Name | P*** A***** |
| Authorizer Title | Director Of Gas Operations |
| Authorizer Telephone | (702) 365-2207 |
| Authorizer Email | P**********@s****.com |
| Narrative | An operator working for c.G. And b. Enterprises struck and damaged a six-inch pe main with a trackhoe while excavating to install a water line in the intersection of saint rose parkway and eastern avenue in henderson. Line location marks were provided for this section of main, however, the marks were not within twenty-four inches of the facility. No death or injury resulted from the incident and service to 2317 active customers was restored after the main was repaired. The incident was telephonically reported to the national response center when the estimated incident cost to southwest gas was determined to exceed 50,000 dollars. Supplemental: following the report submitted on november 29, 2011, additional details were discovered. After the excavator failed to manually determine the location of the distribution main within the area marked by southwest gas, the excavator did not contact the one-call center or southwest gas to request additional location information as required. Instead, the excavator began powered excavation operations and damaged the distribution main. Supplemental: following the report submitted on december 9, 2011, additional details were discovered. The excavator was not required by state law to request additional location informaion. Accordingly, the predominant cause was incorrect facility records/maps. |
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