Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2010-10-01 — DE
Operator
Delmarva Power & Light Company
Cause
Natural Force Damage
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$65,000
Incident datetime
2010-10-01 03:35
Report number
Location
DE, NEW CASTLE COUNTY
Narrative
This is the final report. In the early morning hours friday, oct. 1, as remnants of tropical storm nicole passed through delaware with heavy rains and high winds, colony boulevard (a private road) over the shellpot creek near wilmington, de began to crumble, washing away the road base down to two steel culverts, and exposing a six-inch gas main buried in the roadway prior to the wash-out. It is believed the earth movement displaced the now unsupported six inch steel gas main, which then damaged a cathodic protection insulating joint, causing an unintended escape of natural gas from the insulating joint.
Detailed record list
Occurred At
2010-10-01 03:35:00
Year
2010
Report Received Date
2010-10-29 00:00:00
Iyear
2010.0
Report Number
20100094.0
Supplemental Number
16314.0
Report Type
Supplemental Final
Operator Id
3240
Name
Delmarva Power & Light Company
Operator Street Address
630 Martin Luther King Jr.
Operator City Name
Wilmington
Operator State Abbreviation
DE
Operator Postal Code
19801
Local Datetime
2010-10-01 03:35:00
Location Street Address
Colony North & Lea Blvd
Location City Name
Wilmington
Location County Name
New Castle County
Location State Abbreviation
DE
Location Postal Code
19802
Location Latitude
39.756837
Location Longitude
-75.517246
Nrc Rpt Datetime
2010-10-01 06:15:00
Nrc Rpt Num
955699
Commodity Released Type
Natural Gas
Unintentional Release
80.0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0.0
Incident Identified Datetime
2010-10-01 03:35:00
On Site Datetime
2010-10-01 03:50:00
Federal
No
Location Type
Private Property
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
36.0
Crossing
Yes
Bridge Crossing Ind
Yes
Bridge Type
Uncased
Pipe Facility Type
Privately Owned
System Part Involved
Main
Installation Year
1967.0
Pipe Diameter
6.0
Pipe Specification
Api5l, Grade B
Pipe Manufacturer
Unknown
Material Involved
Steel
Steel Seam Type
Other
Steel Seam Type Details
Unknown
Wt Steel
0.28
Release Type
Leak
Leak Type
Connection Failure
Class Location Type
Class 4 Location
Est Cost Oper Paid
0.0
Est Cost Prop Damage
65000.0
Est Cost Emergency
450.0
Est Cost Other
30000.0
Est Cost Other Details
Built A Temporary Road For Construction Equipment And Operator Personnel Access.
Est Cost Unintentional Release
50.0
Prpty
95500.0
Commercial Affected
8.0
Industrial Affected
0.0
Residences Affected
370.0
Accident Psig
34.0
Normal Psig
35.0
Mop Psig
60.0
Accident Pressure
Pressure Did Not Exceed Maop
Scada In Place Ind
No
Accident Identifier
Notification From Emergency Responder
Investigation Status
Yes, specify investigation result(s): (select all that apply)
Invest No Control Room Ind
Yes
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
Washouts/scouring
Nf Extreme Weather Ind
Yes
Nf Tropical Storm Ind
Yes
Preparer Name
R***** G K*****
Preparer Title
Manager Gas Engineering
Preparer Email
R************@d*******.com
Preparer Telephone
3024293848
Preparer Fax
3024293207
Authorizer Name
R***** G K*****
Authorizer Title
Manager Gas Engineering
Authorizer Telephone
3024293848
Authorizer Email
R************@d*******.com
Narrative
This is the final report. In the early morning hours friday, oct. 1, as remnants of tropical storm nicole passed through delaware with heavy rains and high winds, colony boulevard (a private road) over the shellpot creek near wilmington, de began to crumble, washing away the road base down to two steel culverts, and exposing a six-inch gas main buried in the roadway prior to the wash-out. It is believed the earth movement displaced the now unsupported six inch steel gas main, which then damaged a cathodic protection insulating joint, causing an unintended escape of natural gas from the insulating joint.
| Occurred At | 2010-10-01 03:35:00 |
|---|---|
| Year | 2010 |
| Report Received Date | 2010-10-29 00:00:00 |
| Iyear | 2010.0 |
| Report Number | 20100094.0 |
| Supplemental Number | 16314.0 |
| Report Type | Supplemental Final |
| Operator Id | 3240 PHMSA Enforcement |
| Name | Delmarva Power & Light Company |
| Operator Street Address | 630 Martin Luther King Jr. |
| Operator City Name | Wilmington |
| Operator State Abbreviation | DE |
| Operator Postal Code | 19801 |
| Local Datetime | 2010-10-01 03:35:00 |
| Location Street Address | Colony North & Lea Blvd |
| Location City Name | Wilmington |
| Location County Name | New Castle County |
| Location State Abbreviation | DE |
| Location Postal Code | 19802 |
| Location Latitude | 39.756837 Google Maps OpenStreetMap |
| Location Longitude | -75.517246 Google Maps OpenStreetMap |
| Nrc Rpt Datetime | 2010-10-01 06:15:00 |
| Nrc Rpt Num | 955699 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 80.0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0.0 |
| Incident Identified Datetime | 2010-10-01 03:35:00 |
| On Site Datetime | 2010-10-01 03:50:00 |
| Federal | No |
| Location Type | Private Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 36.0 |
| Crossing | Yes |
| Bridge Crossing Ind | Yes |
| Bridge Type | Uncased |
| Pipe Facility Type | Privately Owned |
| System Part Involved | Main |
| Installation Year | 1967.0 |
| Pipe Diameter | 6.0 |
| Pipe Specification | Api5l, Grade B |
| Pipe Manufacturer | Unknown |
| Material Involved | Steel |
| Steel Seam Type | Other |
| Steel Seam Type Details | Unknown |
| Wt Steel | 0.28 |
| Release Type | Leak |
| Leak Type | Connection Failure |
| Class Location Type | Class 4 Location |
| Est Cost Oper Paid | 0.0 |
| Est Cost Prop Damage | 65000.0 |
| Est Cost Emergency | 450.0 |
| Est Cost Other | 30000.0 |
| Est Cost Other Details | Built A Temporary Road For Construction Equipment And Operator Personnel Access. |
| Est Cost Unintentional Release | 50.0 |
| Prpty | 95500.0 |
| Commercial Affected | 8.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 370.0 |
| Accident Psig | 34.0 |
| Normal Psig | 35.0 |
| Mop Psig | 60.0 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Scada In Place Ind | No |
| Accident Identifier | Notification From Emergency Responder |
| Investigation Status | Yes, specify investigation result(s): (select all that apply) |
| Invest No Control Room Ind | Yes |
| 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 | Washouts/scouring |
| Nf Extreme Weather Ind | Yes |
| Nf Tropical Storm Ind | Yes |
| Preparer Name | R***** G K***** |
| Preparer Title | Manager Gas Engineering |
| Preparer Email | R************@d*******.com |
| Preparer Telephone | 3024293848 |
| Preparer Fax | 3024293207 |
| Authorizer Name | R***** G K***** |
| Authorizer Title | Manager Gas Engineering |
| Authorizer Telephone | 3024293848 |
| Authorizer Email | R************@d*******.com |
| Narrative | This is the final report. In the early morning hours friday, oct. 1, as remnants of tropical storm nicole passed through delaware with heavy rains and high winds, colony boulevard (a private road) over the shellpot creek near wilmington, de began to crumble, washing away the road base down to two steel culverts, and exposing a six-inch gas main buried in the roadway prior to the wash-out. It is believed the earth movement displaced the now unsupported six inch steel gas main, which then damaged a cathodic protection insulating joint, causing an unintended escape of natural gas from the insulating joint. |
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