Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2014-10-24 — CA
Operator
Pacific Gas & Electric Co
Cause
Locating Issue
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$520,000
Incident datetime
2014-10-24 07:28
Report number
Location
CA
Narrative
At 0732 hours on oct. 24, 2014, pg&e was informed of a third-party dig in near wible road and houghton road in bakersfield. A third party furrowing a field struck transmission line l-300a causing an unintentional release of natural gas. L-300a is a 34-inch line located downstream of mile point 270.85, during the incident, valves at mp 270.85 and mp278.70 were closed and the blowoff valves (at both locations) were opened to expedite depressurizing of approximately 8 miles of the pipe. The flow of gas stopped at 1151 hours. The fire department established an 8 square-mile exclusion zone around the dig-in area and evacuated two elementary schools. No injuries, no fatalities, and no ignition occurred during the incident. Kern county fire lifted the exclusion zone at about 1230 hours. Environmental health and hazardous materials personnel monitored the air quality for approximately 30 minutes after the gas was shut in and deemed it was safe to lift the order. Traffic control was conducted by the california highway patrol and kern county sheriff's office. Transmission line l-312, which is tapped off of this section of l-300a and serves roughly 100 customers, was also isolated but due to line pack the customers were not affected. Three commercial customers lost service during the incident: texaco, vulcan materials, and industrial oil and asphalt. By 0900 hours on oct. 26, vulcan and ridgeline oil and asphalt were returned to service. Line 312 and texaco were returned to service at approximately 1100 hours on oct. 26. Repairs were made by replacing the damaged portion of pipeline with pre-tested pipe, successful radiographic examinations of the welds were made, and the approximate 8 miles of l-300a was purged and re-pressurized with natural gas prior to 0145 hours on oct. 26, 2014. The facility was not located and marked under USA ticket 422144. The incident was reported to the cpuc and DOT because damages exceed $50,000. Safety and enforcement division of the california public utilities commission (cpuc) issued a citation to pg&e for failing to follow its procedures to adequately document the excavation area in USA ticket 0422144 and for failing to submit a supplementary report to PHMSA reflecting this information. This incident is currently the subject of a dispute in a civil law suit pending in kern county superior court of california entitled pg&e v. Alexander et al. Case no. Bcv-15-101623 and related cross-action. Pg&e will submit a supplemental report to PHMSA when the litigation is resolved.
Detailed record list
Report Received Date
2014-11-21 00:00:00
Iyear
2014
Report Number
20140126
Supplemental Number
31444
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
2014-10-24 07:28:00
Location Latitude
35.244867
Location Longitude
-119.04878
Nrc Rpt Num
1099198
Nrc Rpt Datetime
2014-10-24 00:00:00
Commodity Released Type
Natural Gas
Unintentional Release
92000
Intentional Release
10000
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2014-10-24 11:51:00
Restart Datetime
2014-10-26 11:00:00
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
2
Incident Identified Datetime
2014-10-24 07:28:00
On Site Datetime
2014-10-24 07:57:00
On Off Shore
Onshore
Onshore State Abbreviation
Ca
Onshore Postal Code
93313
Onshore City Name
Bakersfield
Onshore County Name
Kern
Designated Location
Milepost
Designated Name
Mp 271.55
Pipe Fac Name
L-300a
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
54
Crossing
No
Pipe Facility Type
Interstate
System Part Involved
Onshore Pipeline, Including Valve Sites
Item Involved
Pipe
Pipe Type
Pipe Body
Pipe Diameter
34
Pipe Wall Thickness
0.375
Pipe Smys
52000
Pipe Specification
Api 5l X-52
Pipe Seam Type
Dsaw
Pipe Manufacturer
Consolidated Western Steel
Pipe Coating Type
Asphalt
Installation Year
1954
Manufactured Year
1954
Material Involved
Carbon Steel
Release Type
Mechanical Puncture
Puncture Axial
8
Puncture Circum
18
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
646
Heat Damage Ind
No
Non Heat Damage Ind
No
Hca Fatalities Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
414000
Est Cost Intentional Release
45000
Est Cost Prop Damage
520000
Est Cost Emergency
0
Est Cost Other
0
Prpty
979000
Accident Psig
640
Mop Psig
757
Mop Cfr Section
192.619(A)(2)
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
No
Upstream Valve Type Ind
Manual
Downstream Valve Type Ind
Manual
Length Segment Isolated
42240
Internal Inspection 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
Third party dig in
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
Yes
Private Row Ind
Yes
Private Subtype
Private Landowner
Excavator Type
Farmer
Excavator Equipment
Farm Equipment
Work Performed
Agriculture
One Call Notified Ind
Yes
One Call Ticket Num
422144
One Call Center Name
Usan
Locator Type
Utility Owner
Visible Marks
No
Service Interruption
Yes
Service Interruption Hours
47
Root Cause Category
Locating Issue
Root Cause Type
Facility Not Marked Due To Locator Error
Preparer Name
E*** B******
Preparer Title
Program Manager
Preparer Email
E***@p**.com
Preparer Telephone
925-357-7889
Authorizer Name
S**** R*******
Authorizer Title
Manager Of Regulatory Compliance
Authorizer Telephone
925-328-5776
Authorizer Email
G***@p**.com
Narrative
At 0732 hours on oct. 24, 2014, pg&e was informed of a third-party dig in near wible road and houghton road in bakersfield. A third party furrowing a field struck transmission line l-300a causing an unintentional release of natural gas. L-300a is a 34-inch line located downstream of mile point 270.85, during the incident, valves at mp 270.85 and mp278.70 were closed and the blowoff valves (at both locations) were opened to expedite depressurizing of approximately 8 miles of the pipe. The flow of gas stopped at 1151 hours. The fire department established an 8 square-mile exclusion zone around the dig-in area and evacuated two elementary schools. No injuries, no fatalities, and no ignition occurred during the incident. Kern county fire lifted the exclusion zone at about 1230 hours. Environmental health and hazardous materials personnel monitored the air quality for approximately 30 minutes after the gas was shut in and deemed it was safe to lift the order. Traffic control was conducted by the california highway patrol and kern county sheriff's office. Transmission line l-312, which is tapped off of this section of l-300a and serves roughly 100 customers, was also isolated but due to line pack the customers were not affected. Three commercial customers lost service during the incident: texaco, vulcan materials, and industrial oil and asphalt. By 0900 hours on oct. 26, vulcan and ridgeline oil and asphalt were returned to service. Line 312 and texaco were returned to service at approximately 1100 hours on oct. 26. Repairs were made by replacing the damaged portion of pipeline with pre-tested pipe, successful radiographic examinations of the welds were made, and the approximate 8 miles of l-300a was purged and re-pressurized with natural gas prior to 0145 hours on oct. 26, 2014. The facility was not located and marked under USA ticket 422144. The incident was reported to the cpuc and DOT because damages exceed $50,000. Safety and enforcement division of the california public utilities commission (cpuc) issued a citation to pg&e for failing to follow its procedures to adequately document the excavation area in USA ticket 0422144 and for failing to submit a supplementary report to PHMSA reflecting this information. This incident is currently the subject of a dispute in a civil law suit pending in kern county superior court of california entitled pg&e v. Alexander et al. Case no. Bcv-15-101623 and related cross-action. Pg&e will submit a supplemental report to PHMSA when the litigation is resolved.
| Report Received Date | 2014-11-21 00:00:00 |
|---|---|
| Iyear | 2014 |
| Report Number | 20140126 |
| Supplemental Number | 31444 |
| 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 | 2014-10-24 07:28:00 |
| Location Latitude | 35.244867 Google Maps OpenStreetMap |
| Location Longitude | -119.04878 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1099198 NRC Report How to search |
| Nrc Rpt Datetime | 2014-10-24 00:00:00 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 92000 |
| Intentional Release | 10000 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2014-10-24 11:51:00 |
| Restart Datetime | 2014-10-26 11:00:00 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 2 |
| Incident Identified Datetime | 2014-10-24 07:28:00 |
| On Site Datetime | 2014-10-24 07:57:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Ca |
| Onshore Postal Code | 93313 |
| Onshore City Name | Bakersfield |
| Onshore County Name | Kern |
| Designated Location | Milepost |
| Designated Name | Mp 271.55 |
| Pipe Fac Name | L-300a |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 54 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Pipe Diameter | 34 |
| Pipe Wall Thickness | 0.375 |
| Pipe Smys | 52000 |
| Pipe Specification | Api 5l X-52 |
| Pipe Seam Type | Dsaw |
| Pipe Manufacturer | Consolidated Western Steel |
| Pipe Coating Type | Asphalt |
| Installation Year | 1954 |
| Manufactured Year | 1954 |
| Material Involved | Carbon Steel |
| Release Type | Mechanical Puncture |
| Puncture Axial | 8 |
| Puncture Circum | 18 |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 646 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Hca Fatalities Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 414000 |
| Est Cost Intentional Release | 45000 |
| Est Cost Prop Damage | 520000 |
| Est Cost Emergency | 0 |
| Est Cost Other | 0 |
| Prpty | 979000 |
| Accident Psig | 640 |
| Mop Psig | 757 |
| Mop Cfr Section | 192.619(A)(2) View CFR 49 §192 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Pressure Restriction Ind | No |
| Upstream Valve Type Ind | Manual |
| Downstream Valve Type Ind | Manual |
| Length Segment Isolated | 42240 |
| Internal Inspection 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 | Third party dig in |
| 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 | Yes |
| Private Row Ind | Yes |
| Private Subtype | Private Landowner |
| Excavator Type | Farmer |
| Excavator Equipment | Farm Equipment |
| Work Performed | Agriculture |
| One Call Notified Ind | Yes |
| One Call Ticket Num | 422144 |
| One Call Center Name | Usan |
| Locator Type | Utility Owner |
| Visible Marks | No |
| Service Interruption | Yes |
| Service Interruption Hours | 47 |
| Root Cause Category | Locating Issue |
| Root Cause Type | Facility Not Marked Due To Locator Error |
| Preparer Name | E*** B****** |
| Preparer Title | Program Manager |
| Preparer Email | E***@p**.com |
| Preparer Telephone | 925-357-7889 |
| Authorizer Name | S**** R******* |
| Authorizer Title | Manager Of Regulatory Compliance |
| Authorizer Telephone | 925-328-5776 |
| Authorizer Email | G***@p**.com |
| Narrative | At 0732 hours on oct. 24, 2014, pg&e was informed of a third-party dig in near wible road and houghton road in bakersfield. A third party furrowing a field struck transmission line l-300a causing an unintentional release of natural gas. L-300a is a 34-inch line located downstream of mile point 270.85, during the incident, valves at mp 270.85 and mp278.70 were closed and the blowoff valves (at both locations) were opened to expedite depressurizing of approximately 8 miles of the pipe. The flow of gas stopped at 1151 hours. The fire department established an 8 square-mile exclusion zone around the dig-in area and evacuated two elementary schools. No injuries, no fatalities, and no ignition occurred during the incident. Kern county fire lifted the exclusion zone at about 1230 hours. Environmental health and hazardous materials personnel monitored the air quality for approximately 30 minutes after the gas was shut in and deemed it was safe to lift the order. Traffic control was conducted by the california highway patrol and kern county sheriff's office. Transmission line l-312, which is tapped off of this section of l-300a and serves roughly 100 customers, was also isolated but due to line pack the customers were not affected. Three commercial customers lost service during the incident: texaco, vulcan materials, and industrial oil and asphalt. By 0900 hours on oct. 26, vulcan and ridgeline oil and asphalt were returned to service. Line 312 and texaco were returned to service at approximately 1100 hours on oct. 26. Repairs were made by replacing the damaged portion of pipeline with pre-tested pipe, successful radiographic examinations of the welds were made, and the approximate 8 miles of l-300a was purged and re-pressurized with natural gas prior to 0145 hours on oct. 26, 2014. The facility was not located and marked under USA ticket 422144. The incident was reported to the cpuc and DOT because damages exceed $50,000. Safety and enforcement division of the california public utilities commission (cpuc) issued a citation to pg&e for failing to follow its procedures to adequately document the excavation area in USA ticket 0422144 and for failing to submit a supplementary report to PHMSA reflecting this information. This incident is currently the subject of a dispute in a civil law suit pending in kern county superior court of california entitled pg&e v. Alexander et al. Case no. Bcv-15-101623 and related cross-action. Pg&e will submit a supplemental report to PHMSA when the litigation is resolved. |
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