Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2015-11-21 — IL
Operator
Peoples Gas Light & Coke Co
Cause
Equipment Failure
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$0
Incident datetime
2015-11-21 21:40
Report number
Location
IL
Narrative
At approximately 9:40 pm on saturday november 21, 2015 an emergency vent valve on the emergency shutdown system for the storage facility at the manlove storage field spuriously opened and emitted gas for 10 minutes until operating personnel closed block valves terminating the release. This valve is designed to open when the emergency shutdown system activates. In this case the valve should not have opened. Calculations on the size of the release were completed and the estimated release was 11.756 million ft3. Since this exceeds the reporting criteria of 3 million ft3 listed in 49 cfr191.3 a one hour call was made to the nrc and a follow up call was made to the icc. The call to the nrc was delayed because the initial assessment made by manlove personnel was that this event did not meet the definition contained in 49cfr191.3. Personnel at manlove originally believed that the definition limited reportable releases to leaks in the system. Since this valve is an identified release path, they initially determined it was not reportable. However further review of the event and the regulations determined that this event did meet the definition contained in 49 cfr 191 of a release. The icc was on site on 11/24/15 and 11/25/15 for the investigation into the incident. The investigation concluded that the seals/gaskets had broken down in the versa valve. The suspected cause of this breakdown was due to numerous freeze and thaw cycles. Supplemental: changed the time that the nrc recieved the report to reflect the central time zone. Changed the class location of the incident to class 1 since there is less than 10 or fewer buildings intended for human occupancy within the class location.
Detailed record list
Report Received Date
2015-12-16 00:00:00
Iyear
2015
Report Number
20150149
Supplemental Number
17069
Report Type
Supplemental Final
Operator Id
15329
Name
Peoples Gas Light & Coke Co
Operator Street Address
200 E Randolph Street
Operator City Name
Chicago
Operator State Abbreviation
IL
Operator Postal Code
60601
Local Datetime
2015-11-21 21:40:00
Location Latitude
40.283333
Location Longitude
-88.416667
Nrc Rpt Num
1134129
Nrc Rpt Datetime
2015-11-23 12:17:00
Commodity Released Type
Natural Gas
Unintentional Release
11756
Intentional Release
0
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Shutdown Due Accident Ind
No
Shutdown Explain
Compressor Operation Was Not Affected
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Incident Identified Datetime
2015-11-21 21:40:00
On Site Datetime
2015-11-21 21:40:00
On Off Shore
Onshore
Onshore State Abbreviation
Il
Onshore Postal Code
61843
Onshore City Name
Not Within A Municipality
Onshore County Name
Champaign
Designated Location
Milepost
Designated Name
Manlove Field
Pipe Fac Name
Manlove Storage Field
Segment Name
Valve #v28 On Station Piping
Federal
No
Location Type
Operator-Controlled Property
Incident Area Type
Aboveground
Incident Area Subtype
Typical Aboveground Facility Piping Or Appurtenance
Crossing
No
Pipe Facility Type
Intrastate
System Part Involved
Belowground Storage, Including Associated Equipment And Piping
Item Involved
Instrumentation
Installation Year
Unknown
Material Involved
Material Other Than Carbon Steel Or Plastic
Material Details
Seals/gaskets In Versa Valve
Release Type
Other
Release Type Details
Instrumentation That Usuaully Keeps Valve #v28 Closed Failed And Caused The Automatic Vent Valve To Inadvertently Open
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
205
Heat Damage Ind
No
Non Heat Damage Ind
No
Hca Fatalities Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
42260
Est Cost Intentional Release
0
Est Cost Prop Damage
0
Est Cost Emergency
0
Est Cost Other
0
Prpty
42260
Accident Psig
1751
Mop Psig
2000
Mop Cfr Section
192.619(A)(2)
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
No
Pipeline Function
Transmission In Storage Field
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
No
Scada Conf Ind
No
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
Investigation Status
No, the operator did not find that an investigation of the controller(s) actions or control room issues was necessary due to: (provide an explanation for why the operator did not investigate)
Investigation Status Details
Controller actions or control room issues could not have had any impact on the incident
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Malfunction Of Control/relief Equipment
Eq Failure Type
Malfunction Of Control/relief Equipment
Instrumentation Ind
Yes
Esd System Failure Ind
Yes
Eq Additional Thermal Ind
Yes
Preparer Name
S**** B******
Preparer Title
Compliance Specialist
Preparer Email
S********@p*****************.com
Preparer Telephone
312-240-5421
Authorizer Name
T***** W***
Authorizer Title
Compliance Manager
Authorizer Telephone
312-240-4650
Authorizer Email
T*****@p*****************.com
Narrative
At approximately 9:40 pm on saturday november 21, 2015 an emergency vent valve on the emergency shutdown system for the storage facility at the manlove storage field spuriously opened and emitted gas for 10 minutes until operating personnel closed block valves terminating the release. This valve is designed to open when the emergency shutdown system activates. In this case the valve should not have opened. Calculations on the size of the release were completed and the estimated release was 11.756 million ft3. Since this exceeds the reporting criteria of 3 million ft3 listed in 49 cfr191.3 a one hour call was made to the nrc and a follow up call was made to the icc. The call to the nrc was delayed because the initial assessment made by manlove personnel was that this event did not meet the definition contained in 49cfr191.3. Personnel at manlove originally believed that the definition limited reportable releases to leaks in the system. Since this valve is an identified release path, they initially determined it was not reportable. However further review of the event and the regulations determined that this event did meet the definition contained in 49 cfr 191 of a release. The icc was on site on 11/24/15 and 11/25/15 for the investigation into the incident. The investigation concluded that the seals/gaskets had broken down in the versa valve. The suspected cause of this breakdown was due to numerous freeze and thaw cycles. Supplemental: changed the time that the nrc recieved the report to reflect the central time zone. Changed the class location of the incident to class 1 since there is less than 10 or fewer buildings intended for human occupancy within the class location.
| Report Received Date | 2015-12-16 00:00:00 |
|---|---|
| Iyear | 2015 |
| Report Number | 20150149 |
| Supplemental Number | 17069 |
| Report Type | Supplemental Final |
| Operator Id | 15329 PHMSA Enforcement |
| Name | Peoples Gas Light & Coke Co |
| Operator Street Address | 200 E Randolph Street |
| Operator City Name | Chicago |
| Operator State Abbreviation | IL |
| Operator Postal Code | 60601 |
| Local Datetime | 2015-11-21 21:40:00 |
| Location Latitude | 40.283333 Google Maps OpenStreetMap |
| Location Longitude | -88.416667 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1134129 NRC Report How to search |
| Nrc Rpt Datetime | 2015-11-23 12:17:00 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 11756 |
| Intentional Release | 0 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | Compressor Operation Was Not Affected |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2015-11-21 21:40:00 |
| On Site Datetime | 2015-11-21 21:40:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Il |
| Onshore Postal Code | 61843 |
| Onshore City Name | Not Within A Municipality |
| Onshore County Name | Champaign |
| Designated Location | Milepost |
| Designated Name | Manlove Field |
| Pipe Fac Name | Manlove Storage Field |
| Segment Name | Valve #v28 On Station Piping |
| Federal | No |
| Location Type | Operator-Controlled Property |
| Incident Area Type | Aboveground |
| Incident Area Subtype | Typical Aboveground Facility Piping Or Appurtenance |
| Crossing | No |
| Pipe Facility Type | Intrastate |
| System Part Involved | Belowground Storage, Including Associated Equipment And Piping |
| Item Involved | Instrumentation |
| Installation Year | Unknown |
| Material Involved | Material Other Than Carbon Steel Or Plastic |
| Material Details | Seals/gaskets In Versa Valve |
| Release Type | Other |
| Release Type Details | Instrumentation That Usuaully Keeps Valve #v28 Closed Failed And Caused The Automatic Vent Valve To Inadvertently Open |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 205 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Hca Fatalities Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 42260 |
| Est Cost Intentional Release | 0 |
| Est Cost Prop Damage | 0 |
| Est Cost Emergency | 0 |
| Est Cost Other | 0 |
| Prpty | 42260 |
| Accident Psig | 1751 |
| Mop Psig | 2000 |
| Mop Cfr Section | 192.619(A)(2) View CFR 49 §192 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Pressure Restriction Ind | No |
| Pipeline Function | Transmission In Storage Field |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | No |
| Scada Conf Ind | No |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| Investigation Status | No, the operator did not find that an investigation of the controller(s) actions or control room issues was necessary due to: (provide an explanation for why the operator did not investigate) |
| Investigation Status Details | Controller actions or control room issues could not have had any impact on the incident |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Malfunction Of Control/relief Equipment |
| Eq Failure Type | Malfunction Of Control/relief Equipment |
| Instrumentation Ind | Yes |
| Esd System Failure Ind | Yes |
| Eq Additional Thermal Ind | Yes |
| Preparer Name | S**** B****** |
| Preparer Title | Compliance Specialist |
| Preparer Email | S********@p*****************.com |
| Preparer Telephone | 312-240-5421 |
| Authorizer Name | T***** W*** |
| Authorizer Title | Compliance Manager |
| Authorizer Telephone | 312-240-4650 |
| Authorizer Email | T*****@p*****************.com |
| Narrative | At approximately 9:40 pm on saturday november 21, 2015 an emergency vent valve on the emergency shutdown system for the storage facility at the manlove storage field spuriously opened and emitted gas for 10 minutes until operating personnel closed block valves terminating the release. This valve is designed to open when the emergency shutdown system activates. In this case the valve should not have opened. Calculations on the size of the release were completed and the estimated release was 11.756 million ft3. Since this exceeds the reporting criteria of 3 million ft3 listed in 49 cfr191.3 a one hour call was made to the nrc and a follow up call was made to the icc. The call to the nrc was delayed because the initial assessment made by manlove personnel was that this event did not meet the definition contained in 49cfr191.3. Personnel at manlove originally believed that the definition limited reportable releases to leaks in the system. Since this valve is an identified release path, they initially determined it was not reportable. However further review of the event and the regulations determined that this event did meet the definition contained in 49 cfr 191 of a release. The icc was on site on 11/24/15 and 11/25/15 for the investigation into the incident. The investigation concluded that the seals/gaskets had broken down in the versa valve. The suspected cause of this breakdown was due to numerous freeze and thaw cycles. Supplemental: changed the time that the nrc recieved the report to reflect the central time zone. Changed the class location of the incident to class 1 since there is less than 10 or fewer buildings intended for human occupancy within the class location. |
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