Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2018-06-14 — NV
Operator
Southwest Gas Corp
Cause
Other Outside Force Damage
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$5,598
Incident datetime
2018-06-14 07:42
Report number
Location
NV, CLARK COUNTY
Narrative
Operator was notified on june 14, 2018 at 07:05 pdt by las vegas valley water district, of a leak on facility due to an adjacent leaking water line. A hazardous grade 1 leak was discovered on a 4-inch steel pipe located at 99 convention center drive in las vegas, nv. The flow of gas to the section of pipe was taken out of service while repairs were completed which resulted in a service outage of 16 commercial customers. From the start of the incident until its conclusion, the operator shared information and kept the public utilities commission of nevada (pucn) informed as events were taking place. After the incident, the operator and the pucn were in communication concerning the root cause and the post-incident summary. Part a, 4: based on communications that the public utilities commission of nevada's regulatory operations staff had with the pipeline and hazardous materials safety administration's accident investigation division, "local time and date of the incident" reflects the time operator personnel was notified by las vegas valley water district of a possible leak on the pipeline. At that time, no incident reporting criteria had been met. Part a, 6: southwest gas notified the national response center (nrc) telephonically of the incident on june 20, 2018 at 12:35 pdt, due to increasing costs associated with dewatering and purging activities, that would possibly meet the $50,000 reportable criteria. The nrc issued report number 1215896 for the incident. Southwest gas provided a 48-hour update telephonically to the nrc on june 22, 2018 at 11:47 pdt and advised that the incident did not meet $50,000 damage criteria. An email was also sent to peter.Katchmar@DOT.Gov advising the same. The nrc issued report number 1216106 for the follow up report. On september 13, 2018, operator determined that estimated cost of emergency response had increased over 20 percent, meeting the $50,000 reportable damage criteria largely due to company personnel overtime labor loadings. Based upon this information, the pucn was advised of the updated cost and operator was directed to submit the written report by october 13, 2018. Part c, 5 and g4: gas pipe wall was eroded-through by water jetting from an adjacent leaking water pipeline. The leaking stream of pressurized water mixed with soil and sand to create an erosive slurry that continually impinged upon the steel gas pipe wall resulting in the leak. Supplemental: part a, 13a: corrected local time & date of shutdown from 10:19 to 09:32.
Detailed record list
Occurred At
2018-06-14 07:42:00
Year
2018
Report Received Date
2018-10-05 00:00:00
Iyear
2018.0
Report Number
20180091.0
Supplemental Number
31387.0
Report Type
Supplemental Final
Operator Id
18536
Name
Southwest Gas Corp
Operator Street Address
5241 Spring Mountain Road
Operator City Name
Las Vegas
Operator State Abbreviation
NV
Operator Postal Code
89103
Local Datetime
2018-06-14 07:05:00
Location Street Address
99 Convention Center Drive
Location City Name
Las Vegas
Location County Name
Clark County
Location State Abbreviation
NV
Location Postal Code
89109
Location Latitude
36.13234
Location Longitude
-115.16353
Nrc Rpt Datetime
2018-06-20 12:35:00
Nrc Rpt Num
1215896
Commodity Released Type
Natural Gas
Unintentional Release
30.0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
3.0
Incident Identified Datetime
2018-06-14 07:42:00
On Site Datetime
2018-06-14 07:35:00
Federal
No
Location Type
Public Property
Incident Area Type
Underground
Incident Area Subtype
Under Pavement
Depth Of Cover
40.0
Crossing
No
Pipe Facility Type
Investor Owned
System Part Involved
Main
Installation Year
1955.0
Pipe Diameter
4.0
Pipe Specification
Api 5l
Pipe Manufacturer
Unknown
Material Involved
Steel
Steel Seam Type
Other
Steel Seam Type Details
Unknown
Wt Steel
0.135
Release Type
Leak
Leak Type
Other
Leak Type Other
See Part H For Information
Class Location Type
Class 4 Location
Est Cost Oper Paid
0.0
Est Cost Prop Damage
5598.0
Est Cost Emergency
72745.0
Est Cost Other
0.0
Est Cost Unintentional Release
68.0
Prpty
78411.0
Commercial Affected
16.0
Industrial Affected
0.0
Residences Affected
0.0
Accident Psig
33.0
Normal Psig
33.0
Mop Psig
33.0
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
No
Cause
Other Outside Force Damage
Cause Details
Other Outside Force Damage
Outside Force Type
Other Outside Force Damage
Osf Other Details
Pressurized Water Line Leak. See Part H For Additional Information.
Preparer Name
A**** B****
Preparer Title
Compliance Specialist
Preparer Email
A**********@s****.com
Preparer Telephone
702-365-2077
Preparer Fax
702-365-2205
Authorizer Name
A****** H****
Authorizer Title
Director Of Operations
Authorizer Telephone
702-365-2049
Authorizer Email
A************@s****.com
Narrative
O*****************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************@DOT.Gov advising the same. The nrc issued report number 1216106 for the follow up report. On september 13, 2018, operator determined that estimated cost of emergency response had increased over 20 percent, meeting the $50,000 reportable damage criteria largely due to company personnel overtime labor loadings. Based upon this information, the pucn was advised of the updated cost and operator was directed to submit the written report by october 13, 2018. Part c, 5 and g4: gas pipe wall was eroded-through by water jetting from an adjacent leaking water pipeline. The leaking stream of pressurized water mixed with soil and sand to create an erosive slurry that continually impinged upon the steel gas pipe wall resulting in the leak. *******************************************************************************************.
| Occurred At | 2018-06-14 07:42:00 |
|---|---|
| Year | 2018 |
| Report Received Date | 2018-10-05 00:00:00 |
| Iyear | 2018.0 |
| Report Number | 20180091.0 |
| Supplemental Number | 31387.0 |
| Report Type | Supplemental Final |
| Operator Id | 18536 PHMSA Enforcement |
| Name | Southwest Gas Corp |
| Operator Street Address | 5241 Spring Mountain Road |
| Operator City Name | Las Vegas |
| Operator State Abbreviation | NV |
| Operator Postal Code | 89103 |
| Local Datetime | 2018-06-14 07:05:00 |
| Location Street Address | 99 Convention Center Drive |
| Location City Name | Las Vegas |
| Location County Name | Clark County |
| Location State Abbreviation | NV |
| Location Postal Code | 89109 |
| Location Latitude | 36.13234 Google Maps OpenStreetMap |
| Location Longitude | -115.16353 Google Maps OpenStreetMap |
| Nrc Rpt Datetime | 2018-06-20 12:35:00 |
| Nrc Rpt Num | 1215896 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 30.0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 3.0 |
| Incident Identified Datetime | 2018-06-14 07:42:00 |
| On Site Datetime | 2018-06-14 07:35:00 |
| Federal | No |
| Location Type | Public Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Pavement |
| Depth Of Cover | 40.0 |
| Crossing | No |
| Pipe Facility Type | Investor Owned |
| System Part Involved | Main |
| Installation Year | 1955.0 |
| Pipe Diameter | 4.0 |
| Pipe Specification | Api 5l |
| Pipe Manufacturer | Unknown |
| Material Involved | Steel |
| Steel Seam Type | Other |
| Steel Seam Type Details | Unknown |
| Wt Steel | 0.135 |
| Release Type | Leak |
| Leak Type | Other |
| Leak Type Other | See Part H For Information |
| Class Location Type | Class 4 Location |
| Est Cost Oper Paid | 0.0 |
| Est Cost Prop Damage | 5598.0 |
| Est Cost Emergency | 72745.0 |
| Est Cost Other | 0.0 |
| Est Cost Unintentional Release | 68.0 |
| Prpty | 78411.0 |
| Commercial Affected | 16.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 0.0 |
| Accident Psig | 33.0 |
| Normal Psig | 33.0 |
| Mop Psig | 33.0 |
| 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 | No |
| Cause | Other Outside Force Damage |
| Cause Details | Other Outside Force Damage |
| Outside Force Type | Other Outside Force Damage |
| Osf Other Details | Pressurized Water Line Leak. See Part H For Additional Information. |
| Preparer Name | A**** B**** |
| Preparer Title | Compliance Specialist |
| Preparer Email | A**********@s****.com |
| Preparer Telephone | 702-365-2077 |
| Preparer Fax | 702-365-2205 |
| Authorizer Name | A****** H**** |
| Authorizer Title | Director Of Operations |
| Authorizer Telephone | 702-365-2049 |
| Authorizer Email | A************@s****.com |
| Narrative | O*****************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************@DOT.Gov advising the same. The nrc issued report number 1216106 for the follow up report. On september 13, 2018, operator determined that estimated cost of emergency response had increased over 20 percent, meeting the $50,000 reportable damage criteria largely due to company personnel overtime labor loadings. Based upon this information, the pucn was advised of the updated cost and operator was directed to submit the written report by october 13, 2018. Part c, 5 and g4: gas pipe wall was eroded-through by water jetting from an adjacent leaking water pipeline. The leaking stream of pressurized water mixed with soil and sand to create an erosive slurry that continually impinged upon the steel gas pipe wall resulting in the leak. *******************************************************************************************. |
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