Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2014-04-25 — IL
Operator
North Shore Gas Co
Cause
Other Incident Cause
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$5,000
Incident datetime
2014-04-25 22:43
Report number
Location
IL, LAKE
Narrative
On 4/24/14 at 2222 hours, a north shore gas employee arrived in the vicinity of the event. The employee had been dispatched to 4777 wellington drive to complete a leak investigation order that was created at 2152 hours. During the leak investigation, the employee smelled an odor at the corner of wellington drive and trenton court and detected 0.3% lel with a combustible gas indicator (cgi). The employee noticed fertilizer and mulch in the area. In accordance with procedures and training, the employee attached a charcoal filter to the cgi and detected 0.0% lel with the filter installed. The employee walked towards 4773 trenton court when the resident of the area flagged the employee down and shouted that there is a fire in the residence next door. The employee started to dial 911 and 4771 trenton court exploded at approximately 2243 hours. North shore gas stopped the flow of gas by closing a single valve at 0032 hours on 4/26/14 at the direction of the long grove fire department. Two people received medical attention onsite and were released. Other homes in the area were damaged due to the explosion and the extent is still under investigation. The gas main that fed 4771 trenton court is a 2" black plastic direct buried main that was installed in 1991. The gas service for 4771 trenton court is a 1.125" black plastic service that was installed in 1996. The service did not have an excess flow valve as it was not required by code at the time of installation. Following the event, the gas main and all associated gas service pipes were pressure tested on 5/12/14. The mains and services were pressure tested at 44 psig, the pressure in the lines at the time of the explosion for 1 hour. All mains and services held pressure demonstrating no leakage out of these lines. Representatives of the illinois commerce commission (icc) pipeline safety branch witnessed this testing. The 4" black plastic direct buried main in wellington drive was restarted at approximately 1000 hours on 4/27/14. The riser for 4771 trenton court was removed from the site on 5/15/14 for an x-ray and is scheduled to be performed on 5/23/14. The meter and regulator are not in a condition that can be tested. 6/4/14: an x-ray test was performed on the riser pipe on 5/23/14 to test the mechanical assembly. 12/31/14: the borescope performed on 10/10/14 was inconclusive. On 11/3/14 the riser assembly was pressure tested and did not hold pressure due to extensive damage to the plastic pipe inside the riser. The home appliances are still in the process of being tested. 9/14/15: a re-assembly of the gas system inside of the house is being generated. Pgl is planning an additional test on the riser. 12/15/15: the re-assembly and testing of the gas system inside of the house was completed. 6/27/17: further examination of the riser determined a stiffener had not been installed in the service, as was the practice at the time the service was installed. However, there is no indication that the riser was leaking or that there was a path for the gas to travel from the outside of the house into the house if gas had been present. Therefore, nsg has determined that jurisdictional gas played no role in the cause of this incident. The event was caused by customer owned piping and/or equipment inside the house. Nsg considers this incident closed.
Detailed record list
Occurred At
2014-04-25 22:43:00
Year
2014
Report Received Date
2014-05-23 00:00:00
Iyear
2014.0
Report Number
20140043.0
Supplemental Number
30512.0
Report Type
Supplemental Final
Operator Id
13660
Name
North Shore Gas Co
Operator Street Address
3001 W. Grand Avenue
Operator City Name
Waukegan
Operator State Abbreviation
IL
Operator Postal Code
60085
Local Datetime
2014-04-25 22:43:00
Location Street Address
4771 Trenton Court
Location City Name
Long Grove
Location County Name
Lake
Location State Abbreviation
IL
Location Postal Code
60047
Location Latitude
42.208528
Location Longitude
-88.002067
Nrc Rpt Datetime
2014-04-25 23:49:00
Nrc Rpt Num
1080892
Commodity Released Type
Natural Gas
Unintentional Release
106.69
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
Yes
Explode Ind
Yes
Num Pub Evacuated
0.0
Incident Identified Datetime
2014-04-25 22:43:00
On Site Datetime
2014-04-25 22:43:00
Federal
No
Location Type
Private Property
Incident Area Type
Aboveground
Incident Area Subtype
Inside A Building
Crossing
No
Pipe Facility Type
Investor Owned
System Part Involved
Other
System Part Details
Unknown
Material Involved
Unknown
Release Type
Other
Release Type Details
North Shore Gas Has Determined That Jurisdictional Gas Played No Role In The Cause Of This Incident.
Class Location Type
Class 3 Location
Est Cost Oper Paid
15613769.0
Est Cost Prop Damage
5000.0
Est Cost Emergency
10000.0
Est Cost Other
0.0
Est Cost Unintentional Release
1330.0
Prpty
15630099.0
Commercial Affected
0.0
Industrial Affected
0.0
Residences Affected
8.0
Accident Psig
44.0
Normal Psig
45.0
Mop Psig
60.0
Accident Pressure
Pressure Did Not Exceed Maop
Scada In Place Ind
No
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
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
Other Incident Cause
Cause Details
Miscellaneous
Other Type
Miscellaneous
Misc Details
North Shore Gas Has Determined That Jurisdictional Gas Had No Role In The Cause Of This Incident. The Event Was Caused By Customer Owned Piping And/or Equipment.
Preparer Name
S**** B******
Preparer Title
Principal Engineer
Preparer Email
S********@p*****************.com
Preparer Telephone
312-240-5421
Authorizer Name
T***** W***
Authorizer Title
Compliance Manager
Authorizer Telephone
3122404650
Authorizer Email
T*****@p*****************.com
Narrative
On 4/24/14 at 2222 hours, a north shore gas employee arrived in the vicinity of the event. The employee had been dispatched to 4777 wellington drive to complete a leak investigation order that was created at 2152 hours. During the leak investigation, the employee smelled an odor at the corner of wellington drive and trenton court and detected 0.3% lel with a combustible gas indicator (cgi). The employee noticed fertilizer and mulch in the area. In accordance with procedures and training, the employee attached a charcoal filter to the cgi and detected 0.0% lel with the filter installed. The employee walked towards 4773 trenton court when the resident of the area flagged the employee down and shouted that there is a fire in the residence next door. The employee started to dial 911 and 4771 trenton court exploded at approximately 2243 hours. North shore gas stopped the flow of gas by closing a single valve at 0032 hours on 4/26/14 at the direction of the long grove fire department. Two people received medical attention onsite and were released. Other homes in the area were damaged due to the explosion and the extent is still under investigation. The gas main that fed 4771 trenton court is a 2" black plastic direct buried main that was installed in 1991. The gas service for 4771 trenton court is a 1.125" black plastic service that was installed in 1996. The service did not have an excess flow valve as it was not required by code at the time of installation. Following the event, the gas main and all associated gas service pipes were pressure tested on 5/12/14. The mains and services were pressure tested at 44 psig, the pressure in the lines at the time of the explosion for 1 hour. All mains and services held pressure demonstrating no leakage out of these lines. Representatives of the illinois commerce commission (icc) pipeline safety branch witnessed this testing. The 4" black plastic direct buried main in wellington drive was restarted at approximately 1000 hours on 4/27/14. The riser for 4771 trenton court was removed from the site on 5/15/14 for an x-ray and is scheduled to be performed on 5/23/14. The meter and regulator are not in a condition that can be tested. 6/4/14: an x-ray test was performed on the riser pipe on 5/23/14 to test the mechanical assembly. 12/31/14: the borescope performed on 10/10/14 was inconclusive. On 11/3/14 the riser assembly was pressure tested and did not hold pressure due to extensive damage to the plastic pipe inside the riser. The home appliances are still in the process of being tested. 9/14/15: a re-assembly of the gas system inside of the house is being generated. Pgl is planning an additional test on the riser. 12/15/15: the re-assembly and testing of the gas system inside of the house was completed. 6/27/17: further examination of the riser determined a stiffener had not been installed in the service, as was the practice at the time the service was installed. However, there is no indication that the riser was leaking or that there was a path for the gas to travel from the outside of the house into the house if gas had been present. Therefore, nsg has determined that jurisdictional gas played no role in the cause of this incident. The event was caused by customer owned piping and/or equipment inside the house. Nsg considers this incident closed.
| Occurred At | 2014-04-25 22:43:00 |
|---|---|
| Year | 2014 |
| Report Received Date | 2014-05-23 00:00:00 |
| Iyear | 2014.0 |
| Report Number | 20140043.0 |
| Supplemental Number | 30512.0 |
| Report Type | Supplemental Final |
| Operator Id | 13660 PHMSA Enforcement |
| Name | North Shore Gas Co |
| Operator Street Address | 3001 W. Grand Avenue |
| Operator City Name | Waukegan |
| Operator State Abbreviation | IL |
| Operator Postal Code | 60085 |
| Local Datetime | 2014-04-25 22:43:00 |
| Location Street Address | 4771 Trenton Court |
| Location City Name | Long Grove |
| Location County Name | Lake |
| Location State Abbreviation | IL |
| Location Postal Code | 60047 |
| Location Latitude | 42.208528 Google Maps OpenStreetMap |
| Location Longitude | -88.002067 Google Maps OpenStreetMap |
| Nrc Rpt Datetime | 2014-04-25 23:49:00 |
| Nrc Rpt Num | 1080892 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 106.69 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | Yes |
| Explode Ind | Yes |
| Num Pub Evacuated | 0.0 |
| Incident Identified Datetime | 2014-04-25 22:43:00 |
| On Site Datetime | 2014-04-25 22:43:00 |
| Federal | No |
| Location Type | Private Property |
| Incident Area Type | Aboveground |
| Incident Area Subtype | Inside A Building |
| Crossing | No |
| Pipe Facility Type | Investor Owned |
| System Part Involved | Other |
| System Part Details | Unknown |
| Material Involved | Unknown |
| Release Type | Other |
| Release Type Details | North Shore Gas Has Determined That Jurisdictional Gas Played No Role In The Cause Of This Incident. |
| Class Location Type | Class 3 Location |
| Est Cost Oper Paid | 15613769.0 |
| Est Cost Prop Damage | 5000.0 |
| Est Cost Emergency | 10000.0 |
| Est Cost Other | 0.0 |
| Est Cost Unintentional Release | 1330.0 |
| Prpty | 15630099.0 |
| Commercial Affected | 0.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 8.0 |
| Accident Psig | 44.0 |
| Normal Psig | 45.0 |
| Mop Psig | 60.0 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Scada In Place Ind | No |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| 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 | Other Incident Cause |
| Cause Details | Miscellaneous |
| Other Type | Miscellaneous |
| Misc Details | North Shore Gas Has Determined That Jurisdictional Gas Had No Role In The Cause Of This Incident. The Event Was Caused By Customer Owned Piping And/or Equipment. |
| Preparer Name | S**** B****** |
| Preparer Title | Principal Engineer |
| Preparer Email | S********@p*****************.com |
| Preparer Telephone | 312-240-5421 |
| Authorizer Name | T***** W*** |
| Authorizer Title | Compliance Manager |
| Authorizer Telephone | 3122404650 |
| Authorizer Email | T*****@p*****************.com |
| Narrative | On 4/24/14 at 2222 hours, a north shore gas employee arrived in the vicinity of the event. The employee had been dispatched to 4777 wellington drive to complete a leak investigation order that was created at 2152 hours. During the leak investigation, the employee smelled an odor at the corner of wellington drive and trenton court and detected 0.3% lel with a combustible gas indicator (cgi). The employee noticed fertilizer and mulch in the area. In accordance with procedures and training, the employee attached a charcoal filter to the cgi and detected 0.0% lel with the filter installed. The employee walked towards 4773 trenton court when the resident of the area flagged the employee down and shouted that there is a fire in the residence next door. The employee started to dial 911 and 4771 trenton court exploded at approximately 2243 hours. North shore gas stopped the flow of gas by closing a single valve at 0032 hours on 4/26/14 at the direction of the long grove fire department. Two people received medical attention onsite and were released. Other homes in the area were damaged due to the explosion and the extent is still under investigation. The gas main that fed 4771 trenton court is a 2" black plastic direct buried main that was installed in 1991. The gas service for 4771 trenton court is a 1.125" black plastic service that was installed in 1996. The service did not have an excess flow valve as it was not required by code at the time of installation. Following the event, the gas main and all associated gas service pipes were pressure tested on 5/12/14. The mains and services were pressure tested at 44 psig, the pressure in the lines at the time of the explosion for 1 hour. All mains and services held pressure demonstrating no leakage out of these lines. Representatives of the illinois commerce commission (icc) pipeline safety branch witnessed this testing. The 4" black plastic direct buried main in wellington drive was restarted at approximately 1000 hours on 4/27/14. The riser for 4771 trenton court was removed from the site on 5/15/14 for an x-ray and is scheduled to be performed on 5/23/14. The meter and regulator are not in a condition that can be tested. 6/4/14: an x-ray test was performed on the riser pipe on 5/23/14 to test the mechanical assembly. 12/31/14: the borescope performed on 10/10/14 was inconclusive. On 11/3/14 the riser assembly was pressure tested and did not hold pressure due to extensive damage to the plastic pipe inside the riser. The home appliances are still in the process of being tested. 9/14/15: a re-assembly of the gas system inside of the house is being generated. Pgl is planning an additional test on the riser. 12/15/15: the re-assembly and testing of the gas system inside of the house was completed. 6/27/17: further examination of the riser determined a stiffener had not been installed in the service, as was the practice at the time the service was installed. However, there is no indication that the riser was leaking or that there was a path for the gas to travel from the outside of the house into the house if gas had been present. Therefore, nsg has determined that jurisdictional gas played no role in the cause of this incident. The event was caused by customer owned piping and/or equipment inside the house. Nsg considers this incident closed. |
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