Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2015-06-17 — SD
Operator
Montana - Dakota Utilities Co
Cause
Excavation Issue
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
1 injury
Property damage (nominal)
$30,000
Incident datetime
2015-06-17 08:44
Report number
Location
SD, POTTER
Narrative
Home owner hired a contractor to install some "geo lock earth anchors" to stabilize the bowing/sheering of foundation walls. Contractor indicated that all work would be completed inside a 10' perimeter of the home. This work was complete in september of 2014. One of the anchors extended in excess of 10 feet from the house and punctured the main in the alley. Gas migrated via the anchor path to the foundation and into the house. Something ignited the gas and both an explosion and fire ensued.
Detailed record list
Occurred At
2015-06-17 08:44:00
Year
2015
Report Received Date
2015-07-10 00:00:00
Iyear
2015.0
Report Number
20150067.0
Supplemental Number
16169.0
Report Type
Supplemental
Operator Id
12684
Name
Montana - Dakota Utilities Co
Operator Street Address
400 North Fourth Street
Operator City Name
Bismarck
Operator State Abbreviation
ND
Operator Postal Code
58501
Local Datetime
2015-06-17 08:30:00
Location Street Address
102 S. Mannston Street
Location City Name
Gettysburg
Location County Name
Potter
Location State Abbreviation
SD
Location Postal Code
57442
Location Latitude
45.01106
Location Longitude
-99.96047
Nrc Rpt Datetime
2015-06-17 11:18:00
Nrc Rpt Num
1120065
Commodity Released Type
Natural Gas
Unintentional Release
0.1
Fatality Ind
No
Fatal
0
Injury Ind
Yes
Num Emp Injuries
0
Num Contr Injuries
0
Num Er Injuries
0
Num Worker Injuries
0
Num Gp Injuries
1
Injure
1
Ignite Ind
Yes
Explode Ind
Yes
Num Pub Evacuated
4.0
Incident Identified Datetime
2015-06-17 08:44:00
On Site Datetime
2015-06-17 09:29:00
Federal
No
Location Type
Private Property
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
34.0
Crossing
No
Pipe Facility Type
Investor Owned
System Part Involved
Main
Installation Year
1993.0
Pipe Diameter
2.0
Pipe Specification
Sdr 11 Mdpe 2406
Pipe Manufacturer
Driscoplex
Material Involved
Plastic
Plastic Type
Polyethylene (Pe)
Plastic Sdr
11
Material Pe Pipe Code
2406
Release Type
Mechanical Puncture
Puncture Axial
0.1
Puncture Circum
0.1
Class Location Type
Class 3 Location
Est Cost Oper Paid
160000.0
Est Cost Prop Damage
30000.0
Est Cost Emergency
10000.0
Est Cost Other
0.0
Est Cost Unintentional Release
0.0
Prpty
200000.0
Commercial Affected
0.0
Industrial Affected
0.0
Residences Affected
1.0
Accident Psig
40.0
Normal Psig
40.0
Mop Psig
60.0
Accident Pressure
Pressure Did Not Exceed Maop
Scada In Place Ind
No
Accident Identifier
Notification From Public
Investigation Status
No, the facility was not monitored by a controller(s) at the time of the incident
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Excavation Damage
Cause Details
Previous Damage Due To Excavation Activity
Ex Party Type
Previous Damage Due To Excavation Activity
Ex Hydrotest Leak Survey Date
2013-01-01 00:00:00
Ex Hydrotest Conducted Ind
No
Notify Cga Dirt
Yes
Public Row Ind
Yes
Public Subtype
Other
Excavator Type
Contractor
Excavator Equipment
Unknown/other
Work Performed
Unknown/other
One Call Notified Ind
Yes
One Call Ticket Num
1423888976
One Call Center Name
Portal Ticket
Locator Type
Utility Owner
Visible Marks
No
Service Interruption
Yes
Service Interruption Hours
168.0
Root Cause Category
Excavation Issue
Root Cause Type
Improper Backfilling Practices
Preparer Name
M*** K***********
Preparer Title
Staff Engineer
Preparer Email
M****************@m**.com
Preparer Telephone
701.222.7973
Authorizer Name
P** D*****
Authorizer Title
Vp Operations
Authorizer Telephone
701.222.6711
Authorizer Email
P*********@m**.com
Narrative
Home owner hired a contractor to install some "geo lock earth anchors" to stabilize the bowing/sheering of foundation walls. Contractor indicated that all work would be completed inside a 10' perimeter of the home. This work was complete in september of 2014. One of the anchors extended in excess of 10 feet from the house and punctured the main in the alley. Gas migrated via the anchor path to the foundation and into the house. Something ignited the gas and both an explosion and fire ensued.
| Occurred At | 2015-06-17 08:44:00 |
|---|---|
| Year | 2015 |
| Report Received Date | 2015-07-10 00:00:00 |
| Iyear | 2015.0 |
| Report Number | 20150067.0 |
| Supplemental Number | 16169.0 |
| Report Type | Supplemental |
| Operator Id | 12684 PHMSA Enforcement |
| Name | Montana - Dakota Utilities Co |
| Operator Street Address | 400 North Fourth Street |
| Operator City Name | Bismarck |
| Operator State Abbreviation | ND |
| Operator Postal Code | 58501 |
| Local Datetime | 2015-06-17 08:30:00 |
| Location Street Address | 102 S. Mannston Street |
| Location City Name | Gettysburg |
| Location County Name | Potter |
| Location State Abbreviation | SD |
| Location Postal Code | 57442 |
| Location Latitude | 45.01106 Google Maps OpenStreetMap |
| Location Longitude | -99.96047 Google Maps OpenStreetMap |
| Nrc Rpt Datetime | 2015-06-17 11:18:00 |
| Nrc Rpt Num | 1120065 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 0.1 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | Yes |
| Num Emp Injuries | 0 |
| Num Contr Injuries | 0 |
| Num Er Injuries | 0 |
| Num Worker Injuries | 0 |
| Num Gp Injuries | 1 |
| Injure | 1 |
| Ignite Ind | Yes |
| Explode Ind | Yes |
| Num Pub Evacuated | 4.0 |
| Incident Identified Datetime | 2015-06-17 08:44:00 |
| On Site Datetime | 2015-06-17 09:29:00 |
| Federal | No |
| Location Type | Private Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 34.0 |
| Crossing | No |
| Pipe Facility Type | Investor Owned |
| System Part Involved | Main |
| Installation Year | 1993.0 |
| Pipe Diameter | 2.0 |
| Pipe Specification | Sdr 11 Mdpe 2406 |
| Pipe Manufacturer | Driscoplex |
| Material Involved | Plastic |
| Plastic Type | Polyethylene (Pe) |
| Plastic Sdr | 11 |
| Material Pe Pipe Code | 2406 |
| Release Type | Mechanical Puncture |
| Puncture Axial | 0.1 |
| Puncture Circum | 0.1 |
| Class Location Type | Class 3 Location |
| Est Cost Oper Paid | 160000.0 |
| Est Cost Prop Damage | 30000.0 |
| Est Cost Emergency | 10000.0 |
| Est Cost Other | 0.0 |
| Est Cost Unintentional Release | 0.0 |
| Prpty | 200000.0 |
| Commercial Affected | 0.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 1.0 |
| Accident Psig | 40.0 |
| Normal Psig | 40.0 |
| Mop Psig | 60.0 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Scada In Place Ind | No |
| Accident Identifier | Notification From Public |
| Investigation Status | No, the facility was not monitored by a controller(s) at the time of the incident |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Excavation Damage |
| Cause Details | Previous Damage Due To Excavation Activity |
| Ex Party Type | Previous Damage Due To Excavation Activity |
| Ex Hydrotest Leak Survey Date | 2013-01-01 00:00:00 |
| Ex Hydrotest Conducted Ind | No |
| Notify Cga Dirt | Yes |
| Public Row Ind | Yes |
| Public Subtype | Other |
| Excavator Type | Contractor |
| Excavator Equipment | Unknown/other |
| Work Performed | Unknown/other |
| One Call Notified Ind | Yes |
| One Call Ticket Num | 1423888976 |
| One Call Center Name | Portal Ticket |
| Locator Type | Utility Owner |
| Visible Marks | No |
| Service Interruption | Yes |
| Service Interruption Hours | 168.0 |
| Root Cause Category | Excavation Issue |
| Root Cause Type | Improper Backfilling Practices |
| Preparer Name | M*** K*********** |
| Preparer Title | Staff Engineer |
| Preparer Email | M****************@m**.com |
| Preparer Telephone | 701.222.7973 |
| Authorizer Name | P** D***** |
| Authorizer Title | Vp Operations |
| Authorizer Telephone | 701.222.6711 |
| Authorizer Email | P*********@m**.com |
| Narrative | Home owner hired a contractor to install some "geo lock earth anchors" to stabilize the bowing/sheering of foundation walls. Contractor indicated that all work would be completed inside a 10' perimeter of the home. This work was complete in september of 2014. One of the anchors extended in excess of 10 feet from the house and punctured the main in the alley. Gas migrated via the anchor path to the foundation and into the house. Something ignited the gas and both an explosion and fire ensued. |
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