Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2016-05-11 — IL
Operator
Ameren Illinois Company
Cause
Locating Issue
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
1 injury
Property damage (nominal)
$3,689
Incident datetime
2016-05-11 10:42
Report number
Location
IL, MACOUPIN
Narrative
A 1/2" plastic gas service to 419 n west street was cut by a third party contractor, resulting in gas blowing to atmosphere. The ameren illinois first responder stopped the blowing gas using an expandable plug into the cut 1/2" service. Approximately 80 minutes later, after the cut gas service had been plugged and an ameren illinois crew was on site to make repairs, an explosion occurred at the structure located at 430 n west street. The post investigation of the area required a temporary outage to 33 gas customers. Revision as of (12/20/2016): the likely cause of the incident, given the relatively short timeframe between the damaged gas service at 419 n west st and the incident occurring at 430 n west st, is attributed to the third party damage of the gas service. The contractor installing a water main in the street had a valid dig ticket, but the service was inaccurately marked inaccurately marked in the field by the locator. Additional post-incident investigation at the 430 n west street location determined that the sewer trap for the sewer lateral into the structure was dry. Ameren illinois, however, was not able to establish that natural gas from the hit service location migrated into the home at 430 n west st. Part a, line 10 - lost gas estimate was updated to 5.4 mcf, with an associated lost gas cost of $21 updated in part d. Part a, line 12 - there were two injuries reported, however ameren illinois could only confirm that one required inpatient hospitalization. Part a, line 13 - the gas main was shut down after the incident occurred. The ameren illinois first responder had removed the plug stopper after the incident, and then the adjacent 1-1/4" plastic gas main was excavated and squeezed off interrupting service to the 400 block of n west st. The gas main serving the 200 and 300 block of n west st was also taken out of service as a precautionary measure. The gas mains were reenergized upon completion of air pressure testing of the gas facilities in the 200 - 400 block of n west st. Part g - the primary cause of the incident was updated to g3, third party damage, with additional supporting information provided. Revision as of 12/31/2016 part a, line 13b - clarifying the time restoration to gas mains is correctly stated as 5/13/2016 00:00, which was right at midnight. Part a, line 14 - revised to "yes" part c, line 5 - revised to "mechanical", with dimensions intended to show the circumference of the cut 1/2" service..
Detailed record list
Occurred At
2016-05-11 10:42:00
Year
2016
Report Received Date
2016-06-10 00:00:00
Iyear
2016.0
Report Number
20160053.0
Supplemental Number
16467.0
Report Type
Supplemental Final
Operator Id
32513
Name
Ameren Illinois Company
Operator Street Address
10 Executive Dr.
Operator City Name
Collinsville
Operator State Abbreviation
IL
Operator Postal Code
62234
Local Datetime
2016-05-11 10:42:00
Location Street Address
430 N West Street
Location City Name
Carlinville
Location County Name
Macoupin
Location State Abbreviation
IL
Location Postal Code
62626
Location Latitude
39.284661
Location Longitude
-89.883213
Nrc Rpt Datetime
2016-05-11 11:37:00
Nrc Rpt Num
1147479
Commodity Released Type
Natural Gas
Unintentional Release
5.4
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
14.0
Incident Identified Datetime
2016-05-11 10:42:00
On Site Datetime
2016-05-11 09:22:00
Federal
No
Location Type
Public Property
Incident Area Type
Aboveground
Incident Area Subtype
Inside A Building
Crossing
No
Pipe Facility Type
Investor Owned
System Part Involved
Service
Installation Year
1982.0
Pipe Diameter
0.625
Pipe Specification
Aldyl A
Pipe Manufacturer
Dupont
Material Involved
Plastic
Plastic Type
Polyethylene (Pe)
Wt Plastic
0.09
Material Pe Pipe Code
2306
Release Type
Mechanical Puncture
Puncture Axial
0.5
Puncture Circum
2.0
Class Location Type
Class 3 Location
Est Cost Oper Paid
125000.0
Est Cost Prop Damage
3689.0
Est Cost Emergency
155668.0
Est Cost Other
0.0
Est Cost Unintentional Release
21.0
Prpty
284378.0
Commercial Affected
1.0
Industrial Affected
0.0
Residences Affected
32.0
Accident Psig
50.0
Normal Psig
50.0
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
Yes
Num Employees Tested
4
Num Employees Failed
0
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
Yes
Public Row Ind
Yes
Public Subtype
City Street
Excavator Type
Contractor
Excavator Equipment
Backhoe/trackhoe
Work Performed
Water
One Call Notified Ind
Yes
One Call Ticket Num
1111116
One Call Center Name
Illinois Julie One Call Center
Locator Type
Contract Locator
Visible Marks
Yes
Service Interruption
Yes
Service Interruption Hours
36.0
Root Cause Category
Locating Issue
Root Cause Type
Facility Not Marked Due To Incomplete Marks At Damage Location
Preparer Name
J*** B******
Preparer Title
Manager Gas Compliance And Training
Preparer Email
J*******@a*****.com
Preparer Telephone
217-625-6854
Preparer Fax
314-613-2640
Authorizer Name
J*** B******
Authorizer Title
Manager Gas Compliance And Training
Authorizer Telephone
217-625-6854
Authorizer Email
J*******@a*****.com
Narrative
A 1/2" plastic gas service to 419 n west street was cut by a third party contractor, resulting in gas blowing to atmosphere. The ameren illinois first responder stopped the blowing gas using an expandable plug into the cut 1/2" service. Approximately 80 minutes later, after the cut gas service had been plugged and an ameren illinois crew was on site to make repairs, an explosion occurred at the structure located at 430 n west street. The post investigation of the area required a temporary outage to 33 gas customers. Revision as of (12/20/2016): the likely cause of the incident, given the relatively short timeframe between the damaged gas service at 419 n west st and the incident occurring at 430 n west st, is attributed to the third party damage of the gas service. The contractor installing a water main in the street had a valid dig ticket, but the service was inaccurately marked inaccurately marked in the field by the locator. Additional post-incident investigation at the 430 n west street location determined that the sewer trap for the sewer lateral into the structure was dry. Ameren illinois, however, was not able to establish that natural gas from the hit service location migrated into the home at 430 n west st. Part a, line 10 - lost gas estimate was updated to 5.4 mcf, with an associated lost gas cost of $21 updated in part d. Part a, line 12 - there were two injuries reported, however ameren illinois could only confirm that one required inpatient hospitalization. Part a, line 13 - the gas main was shut down after the incident occurred. The ameren illinois first responder had removed the plug stopper after the incident, and then the adjacent 1-1/4" plastic gas main was excavated and squeezed off interrupting service to the 400 block of n west st. The gas main serving the 200 and 300 block of n west st was also taken out of service as a precautionary measure. The gas mains were reenergized upon completion of air pressure testing of the gas facilities in the 200 - 400 block of n west st. Part g - the primary cause of the incident was updated to g3, third party damage, with additional supporting information provided. Revision as of 12/31/2016 part a, line 13b - clarifying the time restoration to gas mains is correctly stated as 5/13/2016 00:00, which was right at midnight. Part a, line 14 - revised to "yes" part c, line 5 - revised to "mechanical", with dimensions intended to show the circumference of the cut 1/2" service..
| Occurred At | 2016-05-11 10:42:00 |
|---|---|
| Year | 2016 |
| Report Received Date | 2016-06-10 00:00:00 |
| Iyear | 2016.0 |
| Report Number | 20160053.0 |
| Supplemental Number | 16467.0 |
| Report Type | Supplemental Final |
| Operator Id | 32513 PHMSA Enforcement |
| Name | Ameren Illinois Company |
| Operator Street Address | 10 Executive Dr. |
| Operator City Name | Collinsville |
| Operator State Abbreviation | IL |
| Operator Postal Code | 62234 |
| Local Datetime | 2016-05-11 10:42:00 |
| Location Street Address | 430 N West Street |
| Location City Name | Carlinville |
| Location County Name | Macoupin |
| Location State Abbreviation | IL |
| Location Postal Code | 62626 |
| Location Latitude | 39.284661 Google Maps OpenStreetMap |
| Location Longitude | -89.883213 Google Maps OpenStreetMap |
| Nrc Rpt Datetime | 2016-05-11 11:37:00 |
| Nrc Rpt Num | 1147479 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 5.4 |
| 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 | 14.0 |
| Incident Identified Datetime | 2016-05-11 10:42:00 |
| On Site Datetime | 2016-05-11 09:22:00 |
| Federal | No |
| Location Type | Public Property |
| Incident Area Type | Aboveground |
| Incident Area Subtype | Inside A Building |
| Crossing | No |
| Pipe Facility Type | Investor Owned |
| System Part Involved | Service |
| Installation Year | 1982.0 |
| Pipe Diameter | 0.625 |
| Pipe Specification | Aldyl A |
| Pipe Manufacturer | Dupont |
| Material Involved | Plastic |
| Plastic Type | Polyethylene (Pe) |
| Wt Plastic | 0.09 |
| Material Pe Pipe Code | 2306 |
| Release Type | Mechanical Puncture |
| Puncture Axial | 0.5 |
| Puncture Circum | 2.0 |
| Class Location Type | Class 3 Location |
| Est Cost Oper Paid | 125000.0 |
| Est Cost Prop Damage | 3689.0 |
| Est Cost Emergency | 155668.0 |
| Est Cost Other | 0.0 |
| Est Cost Unintentional Release | 21.0 |
| Prpty | 284378.0 |
| Commercial Affected | 1.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 32.0 |
| Accident Psig | 50.0 |
| Normal Psig | 50.0 |
| 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 | Yes |
| Num Employees Tested | 4 |
| Num Employees Failed | 0 |
| 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 | Yes |
| Public Row Ind | Yes |
| Public Subtype | City Street |
| Excavator Type | Contractor |
| Excavator Equipment | Backhoe/trackhoe |
| Work Performed | Water |
| One Call Notified Ind | Yes |
| One Call Ticket Num | 1111116 |
| One Call Center Name | Illinois Julie One Call Center |
| Locator Type | Contract Locator |
| Visible Marks | Yes |
| Service Interruption | Yes |
| Service Interruption Hours | 36.0 |
| Root Cause Category | Locating Issue |
| Root Cause Type | Facility Not Marked Due To Incomplete Marks At Damage Location |
| Preparer Name | J*** B****** |
| Preparer Title | Manager Gas Compliance And Training |
| Preparer Email | J*******@a*****.com |
| Preparer Telephone | 217-625-6854 |
| Preparer Fax | 314-613-2640 |
| Authorizer Name | J*** B****** |
| Authorizer Title | Manager Gas Compliance And Training |
| Authorizer Telephone | 217-625-6854 |
| Authorizer Email | J*******@a*****.com |
| Narrative | A 1/2" plastic gas service to 419 n west street was cut by a third party contractor, resulting in gas blowing to atmosphere. The ameren illinois first responder stopped the blowing gas using an expandable plug into the cut 1/2" service. Approximately 80 minutes later, after the cut gas service had been plugged and an ameren illinois crew was on site to make repairs, an explosion occurred at the structure located at 430 n west street. The post investigation of the area required a temporary outage to 33 gas customers. Revision as of (12/20/2016): the likely cause of the incident, given the relatively short timeframe between the damaged gas service at 419 n west st and the incident occurring at 430 n west st, is attributed to the third party damage of the gas service. The contractor installing a water main in the street had a valid dig ticket, but the service was inaccurately marked inaccurately marked in the field by the locator. Additional post-incident investigation at the 430 n west street location determined that the sewer trap for the sewer lateral into the structure was dry. Ameren illinois, however, was not able to establish that natural gas from the hit service location migrated into the home at 430 n west st. Part a, line 10 - lost gas estimate was updated to 5.4 mcf, with an associated lost gas cost of $21 updated in part d. Part a, line 12 - there were two injuries reported, however ameren illinois could only confirm that one required inpatient hospitalization. Part a, line 13 - the gas main was shut down after the incident occurred. The ameren illinois first responder had removed the plug stopper after the incident, and then the adjacent 1-1/4" plastic gas main was excavated and squeezed off interrupting service to the 400 block of n west st. The gas main serving the 200 and 300 block of n west st was also taken out of service as a precautionary measure. The gas mains were reenergized upon completion of air pressure testing of the gas facilities in the 200 - 400 block of n west st. Part g - the primary cause of the incident was updated to g3, third party damage, with additional supporting information provided. Revision as of 12/31/2016 part a, line 13b - clarifying the time restoration to gas mains is correctly stated as 5/13/2016 00:00, which was right at midnight. Part a, line 14 - revised to "yes" part c, line 5 - revised to "mechanical", with dimensions intended to show the circumference of the cut 1/2" service.. |
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