Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2014-07-08 — TX
Operator
Enterprise Products Operating Llc
Cause
Incorrect Operation
Commodity
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$0
Incident datetime
2014-07-08 18:20
Report number
Location
TX
Narrative
Mainline piping modifications to remove the pig traps, replace valve settings and disconnect the 6-inch propane line cross-overs were being made at the collins lake facility in conjunction with hydrotesting sections of the morris lateral from clinton, ia, to channahon, il. The pipeline was shut down and the product (e-p mix) was displaced by pushing pigs with nitrogen. It was then depressurized and isolated, which included closing valves at the collins lake and channahon facilities. Additionally, the pig traps at collins lake were purged with nitrogen. Prior to work beginning at 4:30 pm, atmospheric monitoring pursuant to the safe work permit at multiple points was performed indicating 0% lel inside of the piping at collins lake to be modified. Shortly after work began, at approx. 6:20pm, a flash fire occurred when contract workers were unbolting a flange to remove a 6-inch spectacle blind. At the same time that these flange unbolting activities were occurring, another contract worker performing a separate work task was using an acetylene torch to cut adjacent piping located approximately 5-feet away. Prior to removing the last two bolts from the flange, a small amount of product was released from behind the 6-inch spectacle blind which enterprise believes was ignited by the cutting torch. Four contract workers sustained non-life threatening injuries in the flash fire. The cause of the flash fire was failure to recognize the hazard of potential trapped gas between a spectacle blind bolted to a valve. Prior to the job beginning, operations had made the determination that the new blind flange being installed should be tapped with a vent in order to relieve any pressure in the event that the blind flange had to be removed. This potential hazard was identified and addressed in the design of the modifications. Note: part f question 1: three employees were drug tested and none failed. No employees were alcohol tested.
Detailed record list
Report Received Date
2014-08-07 00:00:00
Iyear
2014
Report Number
20140284
Supplemental Number
19897
Report Type
Supplemental Final
Operator Id
31618
Name
Enterprise Products Operating Llc
Operator Street Address
1100 Louisiana Street
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Local Datetime
2014-07-08 18:20:00
Location Latitude
41.410372
Location Longitude
-88.373137
Commodity Released Type
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Commodity Subtype
Other Hvl
Commodity Details
Propane
Unintentional Release Bbls
0.1
Intentional Release Bbls
0
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
Incident Identified Datetime
2014-07-08 18:20:00
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Shutdown Due Accident Ind
No
Shutdown Explain
The Pipeline Was Already Shut Down.
On Site Datetime
2014-07-08 18:20:00
Nrc Rpt Datetime
2014-07-08 20:20:00
Nrc Rpt Num
1088431
Ignite Ind
Yes
Explode Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Morris Lateral
Segment Name
Lid 624
Onshore State Abbreviation
Il
Onshore Postal Code
60450
Onshore City Name
Morris
Onshore County Name
Grundy
Designated Location
Milepost/valve Station
Designated Name
Collins Lake
Federal
No
Location Type
Totally Contained On Operator-Controlled Property
Incident Area Type
Aboveground
Incident Area Subtype
Typical Aboveground Facility Piping Or Appurtenance
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Flange Assembly
Installation Year
1995
Material Involved
Carbon Steel
Release Type
Other
Release Type Details
Trapped Product Between A Spectacle Blind Bolted To A Valve Was Released When The Flange Bolts Were Being Removed.
Wildlife Impact Ind
No
Soil Contamination
No
Long Term Assessment
No
Remediation Ind
No
Water Contam Ind
No
Could Be Hca
Yes
Commodity Reached Hca
No
Est Cost Oper Paid
0
Est Cost Gas Released
0
Est Cost Prop Damage
0
Est Cost Emergency
0
Est Cost Environmental
0
Est Cost Other
225
Est Cost Other Details
Employee Drug Testing
Prpty
225
Accident Psig
0
Mop Psig
1307
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
Yes
Exceed Restriction Ind
No
Phmsa Restriction Ind
Not Mandated
Internal Inspection Ind
Yes
Operation Complications Ind
No
Pipeline Function
> 20% Smys Regulated Transmission
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
No
Scada Conf Ind
No
Cpm In Place Ind
Yes
Cpm Operating Ind
Yes
Cpm Functional Ind
Yes
Cpm Detection Ind
No
Cpm Conf Ind
No
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
The pipeline was being monitored but it was purged of product and the valve adjacent to the blind was a manual valve.
Employee Drug Test Ind
Yes
Contractor Drug Test Ind
Yes
Num Employees Tested
3
Num Employees Failed
0
Num Contractors Tested
16
Num Contractors Failed
0
Cause
Incorrect Operation
Cause Details
Other Incorrect Operation
Operation Type
Other Incorrect Operation
Operation Details
The Cause Of The Flash Fire Was Failure To Recognize The Hazard Of Potential Trapped Gas Between The Spectacle Blind And The Valve.
Related Other Ind
Yes
Operation Related Details
The Cause Of The Flash Fire Was Failure To Recognize The Hazard Of Potential Trapped Gas Between A Spectacle Blind Bolted To A Valve.
Category Type
Other Maintenance
Operator Qualification Ind
No
Preparer Name
N*** T*****
Preparer Title
Pipeline Compliance Engineer
Preparer Email
N*******@e****.com
Preparer Telephone
7133812493
Prepared Date
2014-11-11 00:00:00
Authorizer Name
N*** T*****
Authorizer Telephone
7133812493
Authorizer Title
Pipeline Compliance Engineer
Authorizer Email
N*******@e****.com
Narrative
Mainline piping modifications to remove the pig traps, replace valve settings and disconnect the 6-inch propane line cross-overs were being made at the collins lake facility in conjunction with hydrotesting sections of the morris lateral from clinton, ia, to channahon, il. The pipeline was shut down and the product (e-p mix) was displaced by pushing pigs with nitrogen. It was then depressurized and isolated, which included closing valves at the collins lake and channahon facilities. Additionally, the pig traps at collins lake were purged with nitrogen. Prior to work beginning at 4:30 pm, atmospheric monitoring pursuant to the safe work permit at multiple points was performed indicating 0% lel inside of the piping at collins lake to be modified. Shortly after work began, at approx. 6:20pm, a flash fire occurred when contract workers were unbolting a flange to remove a 6-inch spectacle blind. At the same time that these flange unbolting activities were occurring, another contract worker performing a separate work task was using an acetylene torch to cut adjacent piping located approximately 5-feet away. Prior to removing the last two bolts from the flange, a small amount of product was released from behind the 6-inch spectacle blind which enterprise believes was ignited by the cutting torch. Four contract workers sustained non-life threatening injuries in the flash fire. The cause of the flash fire was failure to recognize the hazard of potential trapped gas between a spectacle blind bolted to a valve. Prior to the job beginning, operations had made the determination that the new blind flange being installed should be tapped with a vent in order to relieve any pressure in the event that the blind flange had to be removed. This potential hazard was identified and addressed in the design of the modifications. Note: part f question 1: three employees were drug tested and none failed. No employees were alcohol tested.
| Report Received Date | 2014-08-07 00:00:00 |
|---|---|
| Iyear | 2014 |
| Report Number | 20140284 |
| Supplemental Number | 19897 |
| Report Type | Supplemental Final |
| Operator Id | 31618 PHMSA Enforcement |
| Name | Enterprise Products Operating Llc |
| Operator Street Address | 1100 Louisiana Street |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77002 |
| Local Datetime | 2014-07-08 18:20:00 |
| Location Latitude | 41.410372 Google Maps OpenStreetMap |
| Location Longitude | -88.373137 Google Maps OpenStreetMap |
| Commodity Released Type | Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions |
| Commodity Subtype | Other Hvl |
| Commodity Details | Propane |
| Unintentional Release Bbls | 0.1 |
| Intentional Release Bbls | 0 |
| Recovered Bbls | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| Incident Identified Datetime | 2014-07-08 18:20:00 |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | The Pipeline Was Already Shut Down. |
| On Site Datetime | 2014-07-08 18:20:00 |
| Nrc Rpt Datetime | 2014-07-08 20:20:00 |
| Nrc Rpt Num | 1088431 NRC Report How to search |
| Ignite Ind | Yes |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Morris Lateral |
| Segment Name | Lid 624 |
| Onshore State Abbreviation | Il |
| Onshore Postal Code | 60450 |
| Onshore City Name | Morris |
| Onshore County Name | Grundy |
| Designated Location | Milepost/valve Station |
| Designated Name | Collins Lake |
| Federal | No |
| Location Type | Totally Contained On Operator-Controlled Property |
| Incident Area Type | Aboveground |
| Incident Area Subtype | Typical Aboveground Facility Piping Or Appurtenance |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Flange Assembly |
| Installation Year | 1995 |
| Material Involved | Carbon Steel |
| Release Type | Other |
| Release Type Details | Trapped Product Between A Spectacle Blind Bolted To A Valve Was Released When The Flange Bolts Were Being Removed. |
| Wildlife Impact Ind | No |
| Soil Contamination | No |
| Long Term Assessment | No |
| Remediation Ind | No |
| Water Contam Ind | No |
| Could Be Hca | Yes |
| Commodity Reached Hca | No |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 0 |
| Est Cost Prop Damage | 0 |
| Est Cost Emergency | 0 |
| Est Cost Environmental | 0 |
| Est Cost Other | 225 |
| Est Cost Other Details | Employee Drug Testing |
| Prpty | 225 |
| Accident Psig | 0 |
| Mop Psig | 1307 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | Yes |
| Exceed Restriction Ind | No |
| Phmsa Restriction Ind | Not Mandated |
| Internal Inspection Ind | Yes |
| Operation Complications Ind | No |
| Pipeline Function | > 20% Smys Regulated Transmission |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | No |
| Scada Conf Ind | No |
| Cpm In Place Ind | Yes |
| Cpm Operating Ind | Yes |
| Cpm Functional Ind | Yes |
| Cpm Detection Ind | No |
| Cpm Conf Ind | No |
| 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 | The pipeline was being monitored but it was purged of product and the valve adjacent to the blind was a manual valve. |
| Employee Drug Test Ind | Yes |
| Contractor Drug Test Ind | Yes |
| Num Employees Tested | 3 |
| Num Employees Failed | 0 |
| Num Contractors Tested | 16 |
| Num Contractors Failed | 0 |
| Cause | Incorrect Operation |
| Cause Details | Other Incorrect Operation |
| Operation Type | Other Incorrect Operation |
| Operation Details | The Cause Of The Flash Fire Was Failure To Recognize The Hazard Of Potential Trapped Gas Between The Spectacle Blind And The Valve. |
| Related Other Ind | Yes |
| Operation Related Details | The Cause Of The Flash Fire Was Failure To Recognize The Hazard Of Potential Trapped Gas Between A Spectacle Blind Bolted To A Valve. |
| Category Type | Other Maintenance |
| Operator Qualification Ind | No |
| Preparer Name | N*** T***** |
| Preparer Title | Pipeline Compliance Engineer |
| Preparer Email | N*******@e****.com |
| Preparer Telephone | 7133812493 |
| Prepared Date | 2014-11-11 00:00:00 |
| Authorizer Name | N*** T***** |
| Authorizer Telephone | 7133812493 |
| Authorizer Title | Pipeline Compliance Engineer |
| Authorizer Email | N*******@e****.com |
| Narrative | Mainline piping modifications to remove the pig traps, replace valve settings and disconnect the 6-inch propane line cross-overs were being made at the collins lake facility in conjunction with hydrotesting sections of the morris lateral from clinton, ia, to channahon, il. The pipeline was shut down and the product (e-p mix) was displaced by pushing pigs with nitrogen. It was then depressurized and isolated, which included closing valves at the collins lake and channahon facilities. Additionally, the pig traps at collins lake were purged with nitrogen. Prior to work beginning at 4:30 pm, atmospheric monitoring pursuant to the safe work permit at multiple points was performed indicating 0% lel inside of the piping at collins lake to be modified. Shortly after work began, at approx. 6:20pm, a flash fire occurred when contract workers were unbolting a flange to remove a 6-inch spectacle blind. At the same time that these flange unbolting activities were occurring, another contract worker performing a separate work task was using an acetylene torch to cut adjacent piping located approximately 5-feet away. Prior to removing the last two bolts from the flange, a small amount of product was released from behind the 6-inch spectacle blind which enterprise believes was ignited by the cutting torch. Four contract workers sustained non-life threatening injuries in the flash fire. The cause of the flash fire was failure to recognize the hazard of potential trapped gas between a spectacle blind bolted to a valve. Prior to the job beginning, operations had made the determination that the new blind flange being installed should be tapped with a vent in order to relieve any pressure in the event that the blind flange had to be removed. This potential hazard was identified and addressed in the design of the modifications. Note: part f question 1: three employees were drug tested and none failed. No employees were alcohol tested. |
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