Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2016-03-13 — CA
Operator
Pacific Gas & Electric Co
Cause
Natural Force Damage
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$10,000
Incident datetime
2016-03-13 17:16
Report number
Location
CA, CONTRA COSTA
Narrative
On march 13, 2016 at 1716 hours, pg&e's gas control was notified of a sinkhole at rheem blvd and center st, in moraga. The sinkhole caused a traffic light to fall, which severed the 4" steel distribution main and resulted in an unintentional release of gas. Pg&e's gas service representative arrived on site at 1835 hours. Pg&e crews stopped the flow of gas on 3/14/16 at 0105 hours by shutting off 7 valves. Approximately 2603 customers were shut-in in order to make the situation safe. Pg&e crews cut and capped the damaged main by 0930 on 3/14/16. The area is a dual feed allowing crews to begin preparation to re-light customers. Within 36 hours of the incident, 90% of the services were restored. Additionally, pg&e brought in cng trailers to restore service to local businesses. A bypass was installed to remove the cng trailer and continuously provide service to the local businesses. Repairs to the main are on-going and will be complete once the town of moraga performs their storm drain work within the sink hole. There were no injuries, fatalities or ignition associated with this incident. Police, fire department and media (abc, kron, cbs) were reported on site. This incident was reported to the cpuc due to the unintentional release of gas and media presence. This incident was reported to the DOT on 3/14/16 once it was determined that costs would exceed $50,000.
Detailed record list
Occurred At
2016-03-13 17:16:00
Year
2016
Report Received Date
2016-04-13 00:00:00
Iyear
2016.0
Report Number
20160037.0
Supplemental Number
16319.0
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
2016-03-13 17:16:00
Location Street Address
Rheem Blvd & Center St
Location City Name
Moraga
Location County Name
Contra Costa
Location State Abbreviation
CA
Location Postal Code
94556
Location Latitude
37.860282
Location Longitude
-122.124958
Nrc Rpt Datetime
2016-03-14 16:03:00
Nrc Rpt Num
1142804
Commodity Released Type
Natural Gas
Unintentional Release
5200.0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
19.0
Incident Identified Datetime
2016-03-13 17:16:00
On Site Datetime
2016-03-13 18:35:00
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
1954.0
Pipe Diameter
4.0
Pipe Specification
Unknown
Pipe Manufacturer
Unknown
Material Involved
Steel
Steel Seam Type
Other
Steel Seam Type Details
Unknown
Release Type
Other
Release Type Details
Traffic Light Fell Into A Sinkhole And Severed The 4" Gas Line.
Class Location Type
Class 3 Location
Est Cost Oper Paid
0.0
Est Cost Prop Damage
10000.0
Est Cost Emergency
0.0
Est Cost Other
100000.0
Est Cost Other Details
Costs Associated With Relight
Est Cost Unintentional Release
14000.0
Prpty
124000.0
Commercial Affected
19.0
Industrial Affected
0.0
Residences Affected
2584.0
Accident Psig
57.0
Normal Psig
57.0
Mop Psig
60.0
Accident Pressure
Pressure Did Not Exceed Maop
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
The control room performed as intended.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Natural Force Damage
Cause Details
Heavy Rains/floods
Natural Force Type
Heavy Rains/floods
Heavy Rains Subtype
Other
Nf Other Details
Winter Rains Saturated Local Soils, Resulting In Subsidence. As Rain Continued, A Traffic Signal Pole And A Portion Of The Sidewalk Fell Into The Expanding Sinkhole. The Collapse Ruptured The 4" Distribution Gas Main.
Nf Extreme Weather Ind
No
Preparer Name
S****** R****
Preparer Title
Gas Engineer
Preparer Email
S***@p**.com
Preparer Telephone
925-328-6107
Authorizer Name
S**** R*******
Authorizer Title
Manager Regulatory Compliance
Authorizer Telephone
925-328-5776
Authorizer Email
G***@p**.com
Narrative
On march 13, 2016 at 1716 hours, pg&e's gas control was notified of a sinkhole at rheem blvd and center st, in moraga. The sinkhole caused a traffic light to fall, which severed the 4" steel distribution main and resulted in an unintentional release of gas. Pg&e's gas service representative arrived on site at 1835 hours. Pg&e crews stopped the flow of gas on 3/14/16 at 0105 hours by shutting off 7 valves. Approximately 2603 customers were shut-in in order to make the situation safe. Pg&e crews cut and capped the damaged main by 0930 on 3/14/16. The area is a dual feed allowing crews to begin preparation to re-light customers. Within 36 hours of the incident, 90% of the services were restored. Additionally, pg&e brought in cng trailers to restore service to local businesses. A bypass was installed to remove the cng trailer and continuously provide service to the local businesses. Repairs to the main are on-going and will be complete once the town of moraga performs their storm drain work within the sink hole. There were no injuries, fatalities or ignition associated with this incident. Police, fire department and media (abc, kron, cbs) were reported on site. This incident was reported to the cpuc due to the unintentional release of gas and media presence. This incident was reported to the DOT on 3/14/16 once it was determined that costs would exceed $50,000.
| Occurred At | 2016-03-13 17:16:00 |
|---|---|
| Year | 2016 |
| Report Received Date | 2016-04-13 00:00:00 |
| Iyear | 2016.0 |
| Report Number | 20160037.0 |
| Supplemental Number | 16319.0 |
| 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 | 2016-03-13 17:16:00 |
| Location Street Address | Rheem Blvd & Center St |
| Location City Name | Moraga |
| Location County Name | Contra Costa |
| Location State Abbreviation | CA |
| Location Postal Code | 94556 |
| Location Latitude | 37.860282 Google Maps OpenStreetMap |
| Location Longitude | -122.124958 Google Maps OpenStreetMap |
| Nrc Rpt Datetime | 2016-03-14 16:03:00 |
| Nrc Rpt Num | 1142804 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 5200.0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 19.0 |
| Incident Identified Datetime | 2016-03-13 17:16:00 |
| On Site Datetime | 2016-03-13 18:35:00 |
| 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 | 1954.0 |
| Pipe Diameter | 4.0 |
| Pipe Specification | Unknown |
| Pipe Manufacturer | Unknown |
| Material Involved | Steel |
| Steel Seam Type | Other |
| Steel Seam Type Details | Unknown |
| Release Type | Other |
| Release Type Details | Traffic Light Fell Into A Sinkhole And Severed The 4" Gas Line. |
| Class Location Type | Class 3 Location |
| Est Cost Oper Paid | 0.0 |
| Est Cost Prop Damage | 10000.0 |
| Est Cost Emergency | 0.0 |
| Est Cost Other | 100000.0 |
| Est Cost Other Details | Costs Associated With Relight |
| Est Cost Unintentional Release | 14000.0 |
| Prpty | 124000.0 |
| Commercial Affected | 19.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 2584.0 |
| Accident Psig | 57.0 |
| Normal Psig | 57.0 |
| Mop Psig | 60.0 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| 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 | The control room performed as intended. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Natural Force Damage |
| Cause Details | Heavy Rains/floods |
| Natural Force Type | Heavy Rains/floods |
| Heavy Rains Subtype | Other |
| Nf Other Details | Winter Rains Saturated Local Soils, Resulting In Subsidence. As Rain Continued, A Traffic Signal Pole And A Portion Of The Sidewalk Fell Into The Expanding Sinkhole. The Collapse Ruptured The 4" Distribution Gas Main. |
| Nf Extreme Weather Ind | No |
| Preparer Name | S****** R**** |
| Preparer Title | Gas Engineer |
| Preparer Email | S***@p**.com |
| Preparer Telephone | 925-328-6107 |
| Authorizer Name | S**** R******* |
| Authorizer Title | Manager Regulatory Compliance |
| Authorizer Telephone | 925-328-5776 |
| Authorizer Email | G***@p**.com |
| Narrative | On march 13, 2016 at 1716 hours, pg&e's gas control was notified of a sinkhole at rheem blvd and center st, in moraga. The sinkhole caused a traffic light to fall, which severed the 4" steel distribution main and resulted in an unintentional release of gas. Pg&e's gas service representative arrived on site at 1835 hours. Pg&e crews stopped the flow of gas on 3/14/16 at 0105 hours by shutting off 7 valves. Approximately 2603 customers were shut-in in order to make the situation safe. Pg&e crews cut and capped the damaged main by 0930 on 3/14/16. The area is a dual feed allowing crews to begin preparation to re-light customers. Within 36 hours of the incident, 90% of the services were restored. Additionally, pg&e brought in cng trailers to restore service to local businesses. A bypass was installed to remove the cng trailer and continuously provide service to the local businesses. Repairs to the main are on-going and will be complete once the town of moraga performs their storm drain work within the sink hole. There were no injuries, fatalities or ignition associated with this incident. Police, fire department and media (abc, kron, cbs) were reported on site. This incident was reported to the cpuc due to the unintentional release of gas and media presence. This incident was reported to the DOT on 3/14/16 once it was determined that costs would exceed $50,000. |
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