Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2015-02-03 — NV
Operator
Southwest Gas Corp
Cause
Pipe, Weld, Or Joint Failure
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$383
Incident datetime
2015-02-03 08:34
Report number
Location
NV, CLARK COUNTY
Narrative
During a leak survey, southwest gas discovered a hazardous leak on a 4-inch aldyl a main and 4-inch aldyl a socket fusion tee at 2398 south boulder highway in henderson, nevada. The flow of gas to the section of pipe was discontinued in order to complete the repair, resulting in an outage of five thousand and eighty-one active customers. The costs of southwest gas' emergency response, leak locating, facility repair and service restoration resulted in the incident meeting PHMSA/DOT notification criteria. Part a, 10: estimated volume of gas released: 0.026 thousand cubic feet (mcf) part c, 2a: year 4-inch aldyl a main installed, 1978 year 4-inch aldyl a socket fusion tee installed, 1984 part g5: additional cause: fusion joint: 19. Specify: socket, heat fusion 20. Year installed: 1984 21. Other attributes: 4-inch aldyl a 22a. First material being joined: polyethylene (pe) 22b. Second material being joined: polyethylene (pe) 4-inch aldyl a main - slow crack growth resulting from pipe deflection creating a stress concentrator at the entrance to the socket fused header. 4-inch aldyl a socket fusion - slow crack growth resulting from non-fusion from debris at the pipe to socket fusion interface at the pipe end-point. This was driven by pipe deflection creating a stress concentrator at the pipe end-point interface with the socket-fused fitting
Detailed record list
Occurred At
2015-02-03 08:34:00
Year
2015
Report Received Date
2015-03-05 00:00:00
Iyear
2015.0
Report Number
20150019.0
Supplemental Number
16110.0
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
2015-02-03 13:05:00
Location Street Address
2398 South Boulder Highway
Location City Name
Henderson
Location County Name
Clark County
Location State Abbreviation
NV
Location Postal Code
89002
Location Latitude
35.99701
Location Longitude
-114.93314
Nrc Rpt Datetime
2015-02-03 13:17:00
Nrc Rpt Num
1107258
Commodity Released Type
Natural Gas
Unintentional Release
0.0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0.0
Incident Identified Datetime
2015-02-03 08:34:00
On Site Datetime
2015-02-03 08:34:00
Federal
No
Location Type
Public Property
Incident Area Type
Underground
Incident Area Subtype
Under Pavement
Depth Of Cover
55.0
Crossing
No
Pipe Facility Type
Investor Owned
System Part Involved
Main
Installation Year
1978.0
Pipe Diameter
4.0
Pipe Specification
Astm D2513
Pipe Manufacturer
Dupont
Material Involved
Plastic
Plastic Type
Polyethylene (Pe)
Plastic Sdr
11
Material Pe Pipe Code
2306
Release Type
Leak
Leak Type
Crack
Class Location Type
Class 3 Location
Est Cost Oper Paid
0.0
Est Cost Prop Damage
383.0
Est Cost Emergency
231183.0
Est Cost Other
0.0
Est Cost Unintentional Release
0.0
Prpty
231566.0
Commercial Affected
71.0
Industrial Affected
1.0
Residences Affected
5009.0
Accident Psig
47.0
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
Pipe, Weld, Or Joint Failure
Cause Details
Body Of Pipe
Pwjf Failure Type
Body Of Pipe
Pipe Body Subtype
Crack
Additional Pipe Bend Ind
Yes
Result Material Ind
Yes
Result Material Subtype
Other
Result Material Details
Slow Crack Growth
Hydrotest Conducted Ind
No
Preparer Name
B***** Y****
Preparer Title
Compliance Specialist
Preparer Email
B***********@s****.com
Preparer Telephone
(702) 365-2213
Preparer Fax
(702) 221-4116
Authorizer Name
T***** C*****
Authorizer Title
Director Of Gas Operations
Authorizer Telephone
(702) 365-2028
Authorizer Email
T************@s****.com
Narrative
During a leak survey, southwest gas discovered a hazardous leak on a 4-inch aldyl a main and 4-inch aldyl a socket fusion tee at 2398 south boulder highway in henderson, nevada. The flow of gas to the section of pipe was discontinued in order to complete the repair, resulting in an outage of five thousand and eighty-one active customers. The costs of southwest gas' emergency response, leak locating, facility repair and service restoration resulted in the incident meeting PHMSA/DOT notification criteria. Part a, 10: estimated volume of gas released: 0.026 thousand cubic feet (mcf) part c, 2a: year 4-inch aldyl a main installed, 1978 year 4-inch aldyl a socket fusion tee installed, 1984 part g5: additional cause: fusion joint: 19. Specify: socket, heat fusion 20. Year installed: 1984 21. Other attributes: 4-inch aldyl a 22a. First material being joined: polyethylene (pe) 22b. Second material being joined: polyethylene (pe) 4-inch aldyl a main - slow crack growth resulting from pipe deflection creating a stress concentrator at the entrance to the socket fused header. 4-inch aldyl a socket fusion - slow crack growth resulting from non-fusion from debris at the pipe to socket fusion interface at the pipe end-point. This was driven by pipe deflection creating a stress concentrator at the pipe end-point interface with the socket-fused fitting
| Occurred At | 2015-02-03 08:34:00 |
|---|---|
| Year | 2015 |
| Report Received Date | 2015-03-05 00:00:00 |
| Iyear | 2015.0 |
| Report Number | 20150019.0 |
| Supplemental Number | 16110.0 |
| 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 | 2015-02-03 13:05:00 |
| Location Street Address | 2398 South Boulder Highway |
| Location City Name | Henderson |
| Location County Name | Clark County |
| Location State Abbreviation | NV |
| Location Postal Code | 89002 |
| Location Latitude | 35.99701 Google Maps OpenStreetMap |
| Location Longitude | -114.93314 Google Maps OpenStreetMap |
| Nrc Rpt Datetime | 2015-02-03 13:17:00 |
| Nrc Rpt Num | 1107258 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 0.0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0.0 |
| Incident Identified Datetime | 2015-02-03 08:34:00 |
| On Site Datetime | 2015-02-03 08:34:00 |
| Federal | No |
| Location Type | Public Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Pavement |
| Depth Of Cover | 55.0 |
| Crossing | No |
| Pipe Facility Type | Investor Owned |
| System Part Involved | Main |
| Installation Year | 1978.0 |
| Pipe Diameter | 4.0 |
| Pipe Specification | Astm D2513 |
| Pipe Manufacturer | Dupont |
| Material Involved | Plastic |
| Plastic Type | Polyethylene (Pe) |
| Plastic Sdr | 11 |
| Material Pe Pipe Code | 2306 |
| Release Type | Leak |
| Leak Type | Crack |
| Class Location Type | Class 3 Location |
| Est Cost Oper Paid | 0.0 |
| Est Cost Prop Damage | 383.0 |
| Est Cost Emergency | 231183.0 |
| Est Cost Other | 0.0 |
| Est Cost Unintentional Release | 0.0 |
| Prpty | 231566.0 |
| Commercial Affected | 71.0 |
| Industrial Affected | 1.0 |
| Residences Affected | 5009.0 |
| Accident Psig | 47.0 |
| 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 | Pipe, Weld, Or Joint Failure |
| Cause Details | Body Of Pipe |
| Pwjf Failure Type | Body Of Pipe |
| Pipe Body Subtype | Crack |
| Additional Pipe Bend Ind | Yes |
| Result Material Ind | Yes |
| Result Material Subtype | Other |
| Result Material Details | Slow Crack Growth |
| Hydrotest Conducted Ind | No |
| Preparer Name | B***** Y**** |
| Preparer Title | Compliance Specialist |
| Preparer Email | B***********@s****.com |
| Preparer Telephone | (702) 365-2213 |
| Preparer Fax | (702) 221-4116 |
| Authorizer Name | T***** C***** |
| Authorizer Title | Director Of Gas Operations |
| Authorizer Telephone | (702) 365-2028 |
| Authorizer Email | T************@s****.com |
| Narrative | During a leak survey, southwest gas discovered a hazardous leak on a 4-inch aldyl a main and 4-inch aldyl a socket fusion tee at 2398 south boulder highway in henderson, nevada. The flow of gas to the section of pipe was discontinued in order to complete the repair, resulting in an outage of five thousand and eighty-one active customers. The costs of southwest gas' emergency response, leak locating, facility repair and service restoration resulted in the incident meeting PHMSA/DOT notification criteria. Part a, 10: estimated volume of gas released: 0.026 thousand cubic feet (mcf) part c, 2a: year 4-inch aldyl a main installed, 1978 year 4-inch aldyl a socket fusion tee installed, 1984 part g5: additional cause: fusion joint: 19. Specify: socket, heat fusion 20. Year installed: 1984 21. Other attributes: 4-inch aldyl a 22a. First material being joined: polyethylene (pe) 22b. Second material being joined: polyethylene (pe) 4-inch aldyl a main - slow crack growth resulting from pipe deflection creating a stress concentrator at the entrance to the socket fused header. 4-inch aldyl a socket fusion - slow crack growth resulting from non-fusion from debris at the pipe to socket fusion interface at the pipe end-point. This was driven by pipe deflection creating a stress concentrator at the pipe end-point interface with the socket-fused fitting |
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