Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2011-06-13 — CA
Operator
Pacific Gas & Electric Co
Cause
Notification Issue
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$60,000
Incident datetime
2011-06-13 13:22
Report number
Location
CA
Narrative
On june 13, 2011 at 1315 hours a third party subcontractor, knife river construction, struck and punctured gas transmission line 114 while grading into a slope adjacent to toland lane. The work being performed was part of a larger project to cut a drainage ditch in conjuction with the development of a wind farm. The subcontractor did not notify USA or pg&e of the work being performed. The sub-contractor did not have a valid USA ticket and, as such, the area was not properly delineated or marked and located. The contractor called 911 and pg&e to report the incident. The fire department was on scene. It is estimated that 1.5 to 2 mmcf of gas was released to atmosphere at mp 3.9 on line 114. There were no injuries or fatalities as a result of this incident. No major media was present. This incident is reportable due to estimated damages exceeding $50,000.
Detailed record list
Report Received Date
2011-07-11 00:00:00
Iyear
2011
Report Number
20110239
Supplemental Number
15428
Report Type
Supplemental 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
2011-06-13 13:15:00
Location Latitude
38.090439
Location Longitude
-121.750695
Nrc Rpt Num
979566
Nrc Rpt Datetime
2011-06-13 18:00:00
Commodity Released Type
Natural Gas
Unintentional Release
2000
Intentional Release
0
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2011-06-13 16:00:00
Restart Datetime
2011-06-15 12:00:00
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Incident Identified Datetime
2011-06-13 13:22:00
On Site Datetime
2011-06-13 14:00:00
On Off Shore
Onshore
Onshore State Abbreviation
Ca
Onshore Postal Code
94571
Onshore City Name
Rio Vista
Onshore County Name
Solano
Designated Location
Milepost
Designated Name
3.9
Pipe Fac Name
Line 114
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
39
Crossing
No
Pipe Facility Type
Intrastate
System Part Involved
Onshore Pipeline, Including Valve Sites
Item Involved
Pipe
Pipe Type
Pipe Body
Pipe Diameter
16
Pipe Wall Thickness
0.4
Pipe Smys
29
Pipe Specification
Grb
Pipe Seam Type
Seamless
Pipe Coating Type
Asphalt
Installation Year
1942
Manufactured Year
1942
Material Involved
Carbon Steel
Release Type
Mechanical Puncture
Puncture Axial
6
Puncture Circum
6
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
250
Heat Damage Ind
No
Non Heat Damage Ind
No
Hca Fatalities Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
10000
Est Cost Intentional Release
0
Est Cost Prop Damage
60000
Est Cost Emergency
0
Est Cost Other
0
Est Cost Other Details
None
Prpty
70000
Accident Psig
360
Mop Psig
510
Mop Cfr Section
Not On Omb-Approved Form When Submitted
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
No
Upstream Valve Type Ind
Remotely Controlled
Downstream Valve Type Ind
Remotely Controlled
Length Segment Isolated
2012
Internal Inspection Ind
No
Tight Mitered Ind
Yes
Other Restrictions Ind
Yes
Operation Complications Ind
No
Pipeline Function
Transmission System
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
Yes
Scada Conf Ind
Yes
Accident Identifier
Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Or Pack Calculations)
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
This incident was a third party dig-in; there were no controller or control room issues associated with this 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
No
Notify Cga Dirt
Yes
Private Row Ind
Yes
Private Subtype
Private Business
Excavator Type
Contractor
Excavator Equipment
Backhoe/trackhoe
Work Performed
Grading
One Call Notified Ind
No
Locator Type
Data Not Collected
Visible Marks
Yes
Service Interruption
No
Root Cause Category
Notification Issue
Root Cause Type
No Notification Made To The One-Call Center/811
Preparer Name
L******* D*******
Preparer Title
Sr. Program Manager
Preparer Email
L***@p**.com
Preparer Telephone
925 974 4313
Authorizer Name
B*** G*****
Authorizer Title
Director Regulatory Compliance
Authorizer Telephone
9259744210
Authorizer Email
No Email Address
Narrative
On june 13, 2011 at 1315 hours a third party subcontractor, knife river construction, struck and punctured gas transmission line 114 while grading into a slope adjacent to toland lane. The work being performed was part of a larger project to cut a drainage ditch in conjuction with the development of a wind farm. The subcontractor did not notify USA or pg&e of the work being performed. The sub-contractor did not have a valid USA ticket and, as such, the area was not properly delineated or marked and located. The contractor called 911 and pg&e to report the incident. The fire department was on scene. It is estimated that 1.5 to 2 mmcf of gas was released to atmosphere at mp 3.9 on line 114. There were no injuries or fatalities as a result of this incident. No major media was present. This incident is reportable due to estimated damages exceeding $50,000.
| Report Received Date | 2011-07-11 00:00:00 |
|---|---|
| Iyear | 2011 |
| Report Number | 20110239 |
| Supplemental Number | 15428 |
| Report Type | Supplemental 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 | 2011-06-13 13:15:00 |
| Location Latitude | 38.090439 Google Maps OpenStreetMap |
| Location Longitude | -121.750695 Google Maps OpenStreetMap |
| Nrc Rpt Num | 979566 NRC Report How to search |
| Nrc Rpt Datetime | 2011-06-13 18:00:00 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 2000 |
| Intentional Release | 0 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2011-06-13 16:00:00 |
| Restart Datetime | 2011-06-15 12:00:00 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2011-06-13 13:22:00 |
| On Site Datetime | 2011-06-13 14:00:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Ca |
| Onshore Postal Code | 94571 |
| Onshore City Name | Rio Vista |
| Onshore County Name | Solano |
| Designated Location | Milepost |
| Designated Name | 3.9 |
| Pipe Fac Name | Line 114 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 39 |
| Crossing | No |
| Pipe Facility Type | Intrastate |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Pipe Diameter | 16 |
| Pipe Wall Thickness | 0.4 |
| Pipe Smys | 29 |
| Pipe Specification | Grb |
| Pipe Seam Type | Seamless |
| Pipe Coating Type | Asphalt |
| Installation Year | 1942 |
| Manufactured Year | 1942 |
| Material Involved | Carbon Steel |
| Release Type | Mechanical Puncture |
| Puncture Axial | 6 |
| Puncture Circum | 6 |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 250 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Hca Fatalities Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 10000 |
| Est Cost Intentional Release | 0 |
| Est Cost Prop Damage | 60000 |
| Est Cost Emergency | 0 |
| Est Cost Other | 0 |
| Est Cost Other Details | None |
| Prpty | 70000 |
| Accident Psig | 360 |
| Mop Psig | 510 |
| Mop Cfr Section | Not On Omb-Approved Form When Submitted View CFR 49 §192 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Pressure Restriction Ind | No |
| Upstream Valve Type Ind | Remotely Controlled |
| Downstream Valve Type Ind | Remotely Controlled |
| Length Segment Isolated | 2012 |
| Internal Inspection Ind | No |
| Tight Mitered Ind | Yes |
| Other Restrictions Ind | Yes |
| Operation Complications Ind | No |
| Pipeline Function | Transmission System |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | Yes |
| Scada Conf Ind | Yes |
| Accident Identifier | Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Or Pack Calculations) |
| 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 | This incident was a third party dig-in; there were no controller or control room issues associated with this 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 | No |
| Notify Cga Dirt | Yes |
| Private Row Ind | Yes |
| Private Subtype | Private Business |
| Excavator Type | Contractor |
| Excavator Equipment | Backhoe/trackhoe |
| Work Performed | Grading |
| One Call Notified Ind | No |
| Locator Type | Data Not Collected |
| Visible Marks | Yes |
| Service Interruption | No |
| Root Cause Category | Notification Issue |
| Root Cause Type | No Notification Made To The One-Call Center/811 |
| Preparer Name | L******* D******* |
| Preparer Title | Sr. Program Manager |
| Preparer Email | L***@p**.com |
| Preparer Telephone | 925 974 4313 |
| Authorizer Name | B*** G***** |
| Authorizer Title | Director Regulatory Compliance |
| Authorizer Telephone | 9259744210 |
| Authorizer Email | No Email Address |
| Narrative | On june 13, 2011 at 1315 hours a third party subcontractor, knife river construction, struck and punctured gas transmission line 114 while grading into a slope adjacent to toland lane. The work being performed was part of a larger project to cut a drainage ditch in conjuction with the development of a wind farm. The subcontractor did not notify USA or pg&e of the work being performed. The sub-contractor did not have a valid USA ticket and, as such, the area was not properly delineated or marked and located. The contractor called 911 and pg&e to report the incident. The fire department was on scene. It is estimated that 1.5 to 2 mmcf of gas was released to atmosphere at mp 3.9 on line 114. There were no injuries or fatalities as a result of this incident. No major media was present. This incident is reportable due to estimated damages exceeding $50,000. |
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