Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2012-04-17 — CA
Operator
Pacific Gas & Electric Co
Cause
Pipe, Weld, Or Joint Failure
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$51,000
Incident datetime
2012-04-17 11:20
Report number
Location
CA, SAN MATEO
Narrative
On april 17, 2012 a gas leak was found during routine leak survey on a 2-inch distribution feeder main (dfds3639) tapped directly off of transmission line 132 at mp 32.32. Upon excavation, three 2-inch girth welds were found leaking. On april 19, 2012 tl-132 was depressurized from mp 31.93 to mp 36.99 to make weld repairs on the 2-inch pipe. The repairs were completed on april 19, 2012 at 2030 hours and line 132 was repressurized. At 1330 hours on april 20, 2012, the cost of repairs was estimated to exceed $50,000 making this a reportable incident. There was no ignition, injuries or fatalities as a result of this incident. No customers lost service. The cause of this incident is faulty welds.
Detailed record list
Occurred At
2012-04-17 11:20:00
Year
2012
Report Received Date
2012-05-18 00:00:00
Iyear
2012.0
Report Number
20120040.0
Supplemental Number
15451.0
Report Type
Original Final
Operator Id
15007
Name
Pacific Gas & Electric Co
Operator Street Address
6121 Bollinger Canyon Rd.
Operator City Name
San Ramon
Operator State Abbreviation
CA
Operator Postal Code
94583
Local Datetime
2012-04-17 11:20:00
Location Street Address
Black Mountain Rd. & Denise Dr.
Location City Name
Hillsborough
Location County Name
San Mateo
Location State Abbreviation
CA
Location Postal Code
94010
Location Latitude
37.54541
Location Longitude
-122.36571
Nrc Rpt Datetime
2012-04-20 18:25:00
Nrc Rpt Num
1009267
Commodity Released Type
Natural Gas
Unintentional Release
872.0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0.0
Incident Identified Datetime
2012-04-17 11:20:00
On Site Datetime
2012-04-17 11:20:00
Federal
No
Location Type
Public Property
Incident Area Type
Underground
Incident Area Subtype
Under Pavement
Crossing
No
Pipe Facility Type
Privately Owned
System Part Involved
Main
Installation Year
2011.0
Pipe Diameter
2.0
Pipe Specification
Api 5l
Pipe Manufacturer
Unknown
Material Involved
Steel
Wt Steel
0.154
Release Type
Leak
Leak Type
Pinhole
Class Location Type
Class 3 Location
Est Cost Oper Paid
0.0
Est Cost Prop Damage
51000.0
Est Cost Emergency
0.0
Est Cost Other
0.0
Est Cost Unintentional Release
2600.0
Prpty
53600.0
Commercial Affected
0.0
Industrial Affected
0.0
Residences Affected
0.0
Accident Psig
285.0
Normal Psig
285.0
Mop Psig
400.0
Accident Pressure
Pressure Did Not Exceed Maop
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
No
Scada Conf Ind
No
Accident Identifier
Ground Patrol By Operator Or Its Contractor
Operator Type
Operator Employee
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
The leak was caused by a poor weld.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Pipe, Weld, Or Joint Failure
Cause Details
Butt Weld
Pwjf Failure Type
Butt Weld
Butt Weld Subtype
Other
Butt Weld Details
Tie-In Weld
Additional Arc Burn Ind
Yes
Additional Lack Fusion Ind
Yes
Result Construction Ind
Yes
Result Construction Subtype
Poor Workmanship
Hydrotest Conducted Ind
Yes
Hydrotest Conducted Year
2011
Hydrotest Pressure
700
Preparer Name
L******* D*******
Preparer Title
Sr. Program Manager
Preparer Email
L***@p**.com
Preparer Telephone
9259744313
Authorizer Name
B*** G*****
Authorizer Title
Director Regulatory Compliance And Support
Authorizer Telephone
9259744210
Authorizer Email
W***@p**.com
Narrative
On april 17, 2012 a gas leak was found during routine leak survey on a 2-inch distribution feeder main (dfds3639) tapped directly off of transmission line 132 at mp 32.32. Upon excavation, three 2-inch girth welds were found leaking. On april 19, 2012 tl-132 was depressurized from mp 31.93 to mp 36.99 to make weld repairs on the 2-inch pipe. The repairs were completed on april 19, 2012 at 2030 hours and line 132 was repressurized. At 1330 hours on april 20, 2012, the cost of repairs was estimated to exceed $50,000 making this a reportable incident. There was no ignition, injuries or fatalities as a result of this incident. No customers lost service. The cause of this incident is faulty welds.
| Occurred At | 2012-04-17 11:20:00 |
|---|---|
| Year | 2012 |
| Report Received Date | 2012-05-18 00:00:00 |
| Iyear | 2012.0 |
| Report Number | 20120040.0 |
| Supplemental Number | 15451.0 |
| Report Type | Original Final |
| Operator Id | 15007 PHMSA Enforcement |
| Name | Pacific Gas & Electric Co |
| Operator Street Address | 6121 Bollinger Canyon Rd. |
| Operator City Name | San Ramon |
| Operator State Abbreviation | CA |
| Operator Postal Code | 94583 |
| Local Datetime | 2012-04-17 11:20:00 |
| Location Street Address | Black Mountain Rd. & Denise Dr. |
| Location City Name | Hillsborough |
| Location County Name | San Mateo |
| Location State Abbreviation | CA |
| Location Postal Code | 94010 |
| Location Latitude | 37.54541 Google Maps OpenStreetMap |
| Location Longitude | -122.36571 Google Maps OpenStreetMap |
| Nrc Rpt Datetime | 2012-04-20 18:25:00 |
| Nrc Rpt Num | 1009267 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 872.0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0.0 |
| Incident Identified Datetime | 2012-04-17 11:20:00 |
| On Site Datetime | 2012-04-17 11:20:00 |
| Federal | No |
| Location Type | Public Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Pavement |
| Crossing | No |
| Pipe Facility Type | Privately Owned |
| System Part Involved | Main |
| Installation Year | 2011.0 |
| Pipe Diameter | 2.0 |
| Pipe Specification | Api 5l |
| Pipe Manufacturer | Unknown |
| Material Involved | Steel |
| Wt Steel | 0.154 |
| Release Type | Leak |
| Leak Type | Pinhole |
| Class Location Type | Class 3 Location |
| Est Cost Oper Paid | 0.0 |
| Est Cost Prop Damage | 51000.0 |
| Est Cost Emergency | 0.0 |
| Est Cost Other | 0.0 |
| Est Cost Unintentional Release | 2600.0 |
| Prpty | 53600.0 |
| Commercial Affected | 0.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 0.0 |
| Accident Psig | 285.0 |
| Normal Psig | 285.0 |
| Mop Psig | 400.0 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | No |
| Scada Conf Ind | No |
| Accident Identifier | Ground Patrol By Operator Or Its Contractor |
| Operator Type | Operator Employee |
| 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 | The leak was caused by a poor weld. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Pipe, Weld, Or Joint Failure |
| Cause Details | Butt Weld |
| Pwjf Failure Type | Butt Weld |
| Butt Weld Subtype | Other |
| Butt Weld Details | Tie-In Weld |
| Additional Arc Burn Ind | Yes |
| Additional Lack Fusion Ind | Yes |
| Result Construction Ind | Yes |
| Result Construction Subtype | Poor Workmanship |
| Hydrotest Conducted Ind | Yes |
| Hydrotest Conducted Year | 2011 |
| Hydrotest Pressure | 700 |
| Preparer Name | L******* D******* |
| Preparer Title | Sr. Program Manager |
| Preparer Email | L***@p**.com |
| Preparer Telephone | 9259744313 |
| Authorizer Name | B*** G***** |
| Authorizer Title | Director Regulatory Compliance And Support |
| Authorizer Telephone | 9259744210 |
| Authorizer Email | W***@p**.com |
| Narrative | On april 17, 2012 a gas leak was found during routine leak survey on a 2-inch distribution feeder main (dfds3639) tapped directly off of transmission line 132 at mp 32.32. Upon excavation, three 2-inch girth welds were found leaking. On april 19, 2012 tl-132 was depressurized from mp 31.93 to mp 36.99 to make weld repairs on the 2-inch pipe. The repairs were completed on april 19, 2012 at 2030 hours and line 132 was repressurized. At 1330 hours on april 20, 2012, the cost of repairs was estimated to exceed $50,000 making this a reportable incident. There was no ignition, injuries or fatalities as a result of this incident. No customers lost service. The cause of this incident is faulty welds. |
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