Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2019-03-09 — IA
Operator
Alliant Energy - Interstate Power And Light Company
Cause
Excavation Issue
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$1,100
Incident datetime
2019-03-09 13:10
Report number
Location
IA, DES MOINES
Narrative
On march 9, 2019 at 13:10, alliant energy - interstate power & light (ipl) received a call from a customer at 401 w. Van weiss blvd in west burlington, iowa stating she had some work done around her house and a clump of dirt fell on her gas meter and she could smell and hear natural gas leaking. The customer was instructed to evacuate the house. Ipl dispatched a service mechanic, who arrived onsite at 13:26 to find the gas had ignited. He immediately requested additional gas personnel for assistance. Police were already onsite and the fire department arrived shortly after and sprayed water on the side of the house to minimize damage until the gas could be shut off. Due to the frozen ground, hand digging to expose the service line was difficult. After two additional ipl employees arrived with a mini-excavator, the 3/4 inch steel service line was exposed and squeezed off at approximately 14:50, allowing firefighters to extinguish the fire. Shortly after, the service line was exposed at the service tee and was cut off and capped. A basement contractor had been performing exterior basement wall repair work around the perimeter of the house and had exposed the steel service line along the east side of the house. Ipl is unaware whether the contractor provided any support to the exposed service line in the excavation. There was no active work being performed by the contractor at the time of the incident. The trench wall collapsed onto the service line and riser, causing the threads on the 3/4 inch nipple at the inlet to the service regulator to break off completely. This allowed gas operating at 55 psig to escape along the outer basement wall. The gas was ignited by an unknown source, possibly static or by rocks being blown around by the force of the gas. The incident was not immediately reported on march 9, 2019, as initial damage estimates indicated the damages would be less than $50,000. Upon seeing revised damage estimates, the incident was called into the national response center on march 11, 2019. Original nrc report number: 1239797 revised nrc report number: 1239801 (to make correction to an incorrect date) 48 hour nrc update number: 1239986 update (04/17/2020): -new service line to house installed on 07/22/2019 -report changed to final.
Detailed record list
Occurred At
2019-03-09 13:10:00
Year
2019
Report Received Date
2019-04-02 00:00:00
Iyear
2019.0
Report Number
20190035.0
Supplemental Number
33613.0
Report Type
Supplemental Final
Operator Id
8170
Name
Alliant Energy - Interstate Power And Light Company
Operator Street Address
200 1st Street Se
Operator City Name
Cedar Rapids
Operator State Abbreviation
IA
Operator Postal Code
52401
Local Datetime
2019-03-09 13:05:00
Location Street Address
401 W. Van Weiss Boulevard
Location City Name
West Burlington
Location County Name
Des Moines
Location State Abbreviation
IA
Location Postal Code
52655-1535
Location Latitude
40.817461
Location Longitude
-91.160774
Nrc Rpt Datetime
2019-03-11 11:26:00
Nrc Rpt Num
1239797
Commodity Released Type
Natural Gas
Unintentional Release
37.0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
Yes
Explode Ind
No
Num Pub Evacuated
1.0
Incident Identified Datetime
2019-03-09 13:10:00
On Site Datetime
2019-03-09 13:26:00
Federal
No
Location Type
Private Property
Incident Area Type
Aboveground
Incident Area Subtype
Typical Aboveground Facility Piping Or Appurtenance (E.g. Value Or Regulator Station, Outdoor Meter Set)
Crossing
No
Pipe Facility Type
Investor Owned
System Part Involved
Outside Meter/regulator Set
Material Involved
Steel
Steel Seam Type
Other
Steel Seam Type Details
Unknown
Wt Steel
0.113
Release Type
Leak
Leak Type
Connection Failure
Class Location Type
Class 3 Location
Est Cost Oper Paid
88000.0
Est Cost Prop Damage
1100.0
Est Cost Emergency
2193.0
Est Cost Other
0.0
Est Cost Unintentional Release
100.0
Prpty
91393.0
Commercial Affected
0.0
Industrial Affected
0.0
Residences Affected
1.0
Accident Psig
55.0
Normal Psig
55.0
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
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
No
Private Row Ind
Yes
Private Subtype
Private Landowner
Excavator Type
Contractor
Excavator Equipment
Backhoe/trackhoe
Work Performed
Drainage
One Call Notified Ind
Yes
One Call Ticket Num
190460180
Locator Type
Contract Locator
Visible Marks
No
Service Interruption
Yes
Service Interruption Hours
3238.0
Root Cause Category
Excavation Issue
Root Cause Type
Excavator Failed To Protect/shore/support Facilities
Preparer Name
R****** A* S******
Preparer Title
Sr. Manager Compliance And Operational Performance
Preparer Email
R*************@a************.com
Preparer Telephone
319-786-4008
Preparer Fax
319-786-7633
Authorizer Name
R****** A* S******
Authorizer Title
Sr. Manager Compliance And Operational Performance
Authorizer Telephone
319-786-4008
Authorizer Email
R*************@a************.com
Narrative
On march 9, 2019 at 13:10, alliant energy - interstate power & light (ipl) received a call from a customer at 401 w. Van weiss blvd in west burlington, iowa stating she had some work done around her house and a clump of dirt fell on her gas meter and she could smell and hear natural gas leaking. The customer was instructed to evacuate the house. Ipl dispatched a service mechanic, who arrived onsite at 13:26 to find the gas had ignited. He immediately requested additional gas personnel for assistance. Police were already onsite and the fire department arrived shortly after and sprayed water on the side of the house to minimize damage until the gas could be shut off. Due to the frozen ground, hand digging to expose the service line was difficult. After two additional ipl employees arrived with a mini-excavator, the 3/4 inch steel service line was exposed and squeezed off at approximately 14:50, allowing firefighters to extinguish the fire. Shortly after, the service line was exposed at the service tee and was cut off and capped. A basement contractor had been performing exterior basement wall repair work around the perimeter of the house and had exposed the steel service line along the east side of the house. Ipl is unaware whether the contractor provided any support to the exposed service line in the excavation. There was no active work being performed by the contractor at the time of the incident. The trench wall collapsed onto the service line and riser, causing the threads on the 3/4 inch nipple at the inlet to the service regulator to break off completely. This allowed gas operating at 55 psig to escape along the outer basement wall. The gas was ignited by an unknown source, possibly static or by rocks being blown around by the force of the gas. The incident was not immediately reported on march 9, 2019, as initial damage estimates indicated the damages would be less than $50,000. Upon seeing revised damage estimates, the incident was called into the national response center on march 11, 2019. Original nrc report number: 1239797 revised nrc report number: 1239801 (to make correction to an incorrect date) 48 hour nrc update number: 1239986 update (04/17/2020): -new service line to house installed on 07/22/2019 -report changed to final.
| Occurred At | 2019-03-09 13:10:00 |
|---|---|
| Year | 2019 |
| Report Received Date | 2019-04-02 00:00:00 |
| Iyear | 2019.0 |
| Report Number | 20190035.0 |
| Supplemental Number | 33613.0 |
| Report Type | Supplemental Final |
| Operator Id | 8170 PHMSA Enforcement |
| Name | Alliant Energy - Interstate Power And Light Company |
| Operator Street Address | 200 1st Street Se |
| Operator City Name | Cedar Rapids |
| Operator State Abbreviation | IA |
| Operator Postal Code | 52401 |
| Local Datetime | 2019-03-09 13:05:00 |
| Location Street Address | 401 W. Van Weiss Boulevard |
| Location City Name | West Burlington |
| Location County Name | Des Moines |
| Location State Abbreviation | IA |
| Location Postal Code | 52655-1535 |
| Location Latitude | 40.817461 Google Maps OpenStreetMap |
| Location Longitude | -91.160774 Google Maps OpenStreetMap |
| Nrc Rpt Datetime | 2019-03-11 11:26:00 |
| Nrc Rpt Num | 1239797 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 37.0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | Yes |
| Explode Ind | No |
| Num Pub Evacuated | 1.0 |
| Incident Identified Datetime | 2019-03-09 13:10:00 |
| On Site Datetime | 2019-03-09 13:26:00 |
| Federal | No |
| Location Type | Private Property |
| Incident Area Type | Aboveground |
| Incident Area Subtype | Typical Aboveground Facility Piping Or Appurtenance (E.g. Value Or Regulator Station, Outdoor Meter Set) |
| Crossing | No |
| Pipe Facility Type | Investor Owned |
| System Part Involved | Outside Meter/regulator Set |
| Material Involved | Steel |
| Steel Seam Type | Other |
| Steel Seam Type Details | Unknown |
| Wt Steel | 0.113 |
| Release Type | Leak |
| Leak Type | Connection Failure |
| Class Location Type | Class 3 Location |
| Est Cost Oper Paid | 88000.0 |
| Est Cost Prop Damage | 1100.0 |
| Est Cost Emergency | 2193.0 |
| Est Cost Other | 0.0 |
| Est Cost Unintentional Release | 100.0 |
| Prpty | 91393.0 |
| Commercial Affected | 0.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 1.0 |
| Accident Psig | 55.0 |
| Normal Psig | 55.0 |
| 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 | 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 | No |
| Private Row Ind | Yes |
| Private Subtype | Private Landowner |
| Excavator Type | Contractor |
| Excavator Equipment | Backhoe/trackhoe |
| Work Performed | Drainage |
| One Call Notified Ind | Yes |
| One Call Ticket Num | 190460180 |
| Locator Type | Contract Locator |
| Visible Marks | No |
| Service Interruption | Yes |
| Service Interruption Hours | 3238.0 |
| Root Cause Category | Excavation Issue |
| Root Cause Type | Excavator Failed To Protect/shore/support Facilities |
| Preparer Name | R****** A* S****** |
| Preparer Title | Sr. Manager Compliance And Operational Performance |
| Preparer Email | R*************@a************.com |
| Preparer Telephone | 319-786-4008 |
| Preparer Fax | 319-786-7633 |
| Authorizer Name | R****** A* S****** |
| Authorizer Title | Sr. Manager Compliance And Operational Performance |
| Authorizer Telephone | 319-786-4008 |
| Authorizer Email | R*************@a************.com |
| Narrative | On march 9, 2019 at 13:10, alliant energy - interstate power & light (ipl) received a call from a customer at 401 w. Van weiss blvd in west burlington, iowa stating she had some work done around her house and a clump of dirt fell on her gas meter and she could smell and hear natural gas leaking. The customer was instructed to evacuate the house. Ipl dispatched a service mechanic, who arrived onsite at 13:26 to find the gas had ignited. He immediately requested additional gas personnel for assistance. Police were already onsite and the fire department arrived shortly after and sprayed water on the side of the house to minimize damage until the gas could be shut off. Due to the frozen ground, hand digging to expose the service line was difficult. After two additional ipl employees arrived with a mini-excavator, the 3/4 inch steel service line was exposed and squeezed off at approximately 14:50, allowing firefighters to extinguish the fire. Shortly after, the service line was exposed at the service tee and was cut off and capped. A basement contractor had been performing exterior basement wall repair work around the perimeter of the house and had exposed the steel service line along the east side of the house. Ipl is unaware whether the contractor provided any support to the exposed service line in the excavation. There was no active work being performed by the contractor at the time of the incident. The trench wall collapsed onto the service line and riser, causing the threads on the 3/4 inch nipple at the inlet to the service regulator to break off completely. This allowed gas operating at 55 psig to escape along the outer basement wall. The gas was ignited by an unknown source, possibly static or by rocks being blown around by the force of the gas. The incident was not immediately reported on march 9, 2019, as initial damage estimates indicated the damages would be less than $50,000. Upon seeing revised damage estimates, the incident was called into the national response center on march 11, 2019. Original nrc report number: 1239797 revised nrc report number: 1239801 (to make correction to an incorrect date) 48 hour nrc update number: 1239986 update (04/17/2020): -new service line to house installed on 07/22/2019 -report changed to final. |
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