Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2013-09-23 — 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)
$141,500
Incident datetime
2013-09-23 22:50
Report number
Location
TX
Narrative
On 9/23/2013 a technician discovered a patch of dead vegetation on the pipeline row within the fence line of abilene station located near solomon, kansas in ottawa county. A subsequent survey of the area indicated lel was present. The pipeline was immediately shut down and the leaking segment was blocked in. Upon excavation, it was identified that the leak originated from a stopple fitting, around the completion plug and blind flange o-ring. Line pressure was lowered by reversing the line and flowing back into conway. Once the pressure was lowered, an attempt was made to blow down the stopple. Upon the unsuccessful attempt to blow down the stopple, it was determined that the stopple fitting would be cut out. The nrc was then notified as the estimated cost to repair was expected to exceed $50,000. The line segment from am 49 to abilene station was flared off, purged with nitrogen, the stopple cut out, and replaced with pipe. The pipeline was restarted on 9/28/2013. Preliminary field analysis conducted by operations determined the leak to be located (by visual observation) between the stopple fitting flange and the blind flange, indicating a possible o-ring failure. The leak location was determined using an lel monitor and snoop gas leak detector but the stopple was not disassembled. Lab analysis concluded there are two possible failure scenarios for the o-ring: 1) the o-ring was not properly seated when it was installed. A contributing factor may have been an improperly sized o-ring. 2) the o-ring blew out during service. Contributing factors may have been misalignment of the flanges, improper torque, degradation of the o-ring or an improper size.
Detailed record list
Report Received Date
2013-10-22 00:00:00
Iyear
2013
Report Number
20130342
Supplemental Number
21877
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
2013-09-23 22:50:00
Location Latitude
39.02942
Location Longitude
-97.38027
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
0.2
Intentional Release Bbls
1097
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
2013-09-23 22:50:00
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2013-09-23 22:50:00
Restart Datetime
2013-09-28 15:39:00
On Site Datetime
2013-09-23 22:50:00
Nrc Rpt Datetime
2013-09-23 23:27:00
Nrc Rpt Num
1061041
Ignite Ind
No
Explode Ind
No
Upstream Valve Type Ind
Manual
Downstream Valve Type Ind
Remotely Controlled
Num Pub Evacuated
0
Pipe Fac Name
West Leg Mainline, Conway To Mankato
Segment Name
Lid 410
Onshore State Abbreviation
Ks
Onshore Postal Code
67480
Onshore City Name
Soloman
Onshore County Name
Ottawa
Designated Location
Milepost/valve Station
Designated Name
Abilene
Federal
No
Location Type
Totally Contained On Operator-Controlled Property
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
48
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Tap Fitting(Stopple, Thread-O-Ring, Weld-O-Let, Etc.)
Installation Year
1989
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Connection Failure
Wildlife Impact Ind
No
Soil Contamination
No
Long Term Assessment
No
Remediation Ind
No
Water Contam Ind
No
Could Be Hca
No
Commodity Reached Hca
No
Est Cost Oper Paid
0
Est Cost Gas Released
10
Est Cost Prop Damage
141500
Est Cost Emergency
10000
Est Cost Environmental
0
Est Cost Other
0
Prpty
151510
Accident Psig
730
Mop Psig
1309
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
17000
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
Yes, specify investigation result(s): (select all that apply)
Invest Schedule Ind
Yes
Invest No Control Room Ind
Yes
Invest No Controller Ind
Yes
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Incorrect Operation
Cause Details
Equipment Not Installed Properly
Operation Type
Equipment Not Installed Properly
Related Other Ind
Yes
Operation Related Details
The Results Of The Metallurgical Analysis Indicated Two Possible Failure Scenarios For The O-Ring: 1) The O-Ring Was Not Properly Seated When It Was Installed. 2) The O-Ring Blew Out During Service.
Category Type
Normal Operating Conditions
Operator Qualification Ind
No
Preparer Name
R** L**
Preparer Title
Pipeline Compliance Engineer
Preparer Email
R***@e****.com
Preparer Telephone
7133816741
Prepared Date
2016-11-21 00:00:00
Authorizer Name
R** L**
Authorizer Telephone
7133816741
Authorizer Title
Pipeline Compliance Engineer
Authorizer Email
R***@e****.com
Narrative
On 9/23/2013 a technician discovered a patch of dead vegetation on the pipeline row within the fence line of abilene station located near solomon, kansas in ottawa county. A subsequent survey of the area indicated lel was present. The pipeline was immediately shut down and the leaking segment was blocked in. Upon excavation, it was identified that the leak originated from a stopple fitting, around the completion plug and blind flange o-ring. Line pressure was lowered by reversing the line and flowing back into conway. Once the pressure was lowered, an attempt was made to blow down the stopple. Upon the unsuccessful attempt to blow down the stopple, it was determined that the stopple fitting would be cut out. The nrc was then notified as the estimated cost to repair was expected to exceed $50,000. The line segment from am 49 to abilene station was flared off, purged with nitrogen, the stopple cut out, and replaced with pipe. The pipeline was restarted on 9/28/2013. Preliminary field analysis conducted by operations determined the leak to be located (by visual observation) between the stopple fitting flange and the blind flange, indicating a possible o-ring failure. The leak location was determined using an lel monitor and snoop gas leak detector but the stopple was not disassembled. Lab analysis concluded there are two possible failure scenarios for the o-ring: 1) the o-ring was not properly seated when it was installed. A contributing factor may have been an improperly sized o-ring. 2) the o-ring blew out during service. Contributing factors may have been misalignment of the flanges, improper torque, degradation of the o-ring or an improper size.
| Report Received Date | 2013-10-22 00:00:00 |
|---|---|
| Iyear | 2013 |
| Report Number | 20130342 |
| Supplemental Number | 21877 |
| 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 | 2013-09-23 22:50:00 |
| Location Latitude | 39.02942 Google Maps OpenStreetMap |
| Location Longitude | -97.38027 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 | 0.2 |
| Intentional Release Bbls | 1097 |
| 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 | 2013-09-23 22:50:00 |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2013-09-23 22:50:00 |
| Restart Datetime | 2013-09-28 15:39:00 |
| On Site Datetime | 2013-09-23 22:50:00 |
| Nrc Rpt Datetime | 2013-09-23 23:27:00 |
| Nrc Rpt Num | 1061041 NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Upstream Valve Type Ind | Manual |
| Downstream Valve Type Ind | Remotely Controlled |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | West Leg Mainline, Conway To Mankato |
| Segment Name | Lid 410 |
| Onshore State Abbreviation | Ks |
| Onshore Postal Code | 67480 |
| Onshore City Name | Soloman |
| Onshore County Name | Ottawa |
| Designated Location | Milepost/valve Station |
| Designated Name | Abilene |
| Federal | No |
| Location Type | Totally Contained On Operator-Controlled Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 48 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Tap Fitting(Stopple, Thread-O-Ring, Weld-O-Let, Etc.) |
| Installation Year | 1989 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Connection Failure |
| Wildlife Impact Ind | No |
| Soil Contamination | No |
| Long Term Assessment | No |
| Remediation Ind | No |
| Water Contam Ind | No |
| Could Be Hca | No |
| Commodity Reached Hca | No |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 10 |
| Est Cost Prop Damage | 141500 |
| Est Cost Emergency | 10000 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 151510 |
| Accident Psig | 730 |
| Mop Psig | 1309 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 17000 |
| 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 | Yes, specify investigation result(s): (select all that apply) |
| Invest Schedule Ind | Yes |
| Invest No Control Room Ind | Yes |
| Invest No Controller Ind | Yes |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Incorrect Operation |
| Cause Details | Equipment Not Installed Properly |
| Operation Type | Equipment Not Installed Properly |
| Related Other Ind | Yes |
| Operation Related Details | The Results Of The Metallurgical Analysis Indicated Two Possible Failure Scenarios For The O-Ring: 1) The O-Ring Was Not Properly Seated When It Was Installed. 2) The O-Ring Blew Out During Service. |
| Category Type | Normal Operating Conditions |
| Operator Qualification Ind | No |
| Preparer Name | R** L** |
| Preparer Title | Pipeline Compliance Engineer |
| Preparer Email | R***@e****.com |
| Preparer Telephone | 7133816741 |
| Prepared Date | 2016-11-21 00:00:00 |
| Authorizer Name | R** L** |
| Authorizer Telephone | 7133816741 |
| Authorizer Title | Pipeline Compliance Engineer |
| Authorizer Email | R***@e****.com |
| Narrative | On 9/23/2013 a technician discovered a patch of dead vegetation on the pipeline row within the fence line of abilene station located near solomon, kansas in ottawa county. A subsequent survey of the area indicated lel was present. The pipeline was immediately shut down and the leaking segment was blocked in. Upon excavation, it was identified that the leak originated from a stopple fitting, around the completion plug and blind flange o-ring. Line pressure was lowered by reversing the line and flowing back into conway. Once the pressure was lowered, an attempt was made to blow down the stopple. Upon the unsuccessful attempt to blow down the stopple, it was determined that the stopple fitting would be cut out. The nrc was then notified as the estimated cost to repair was expected to exceed $50,000. The line segment from am 49 to abilene station was flared off, purged with nitrogen, the stopple cut out, and replaced with pipe. The pipeline was restarted on 9/28/2013. Preliminary field analysis conducted by operations determined the leak to be located (by visual observation) between the stopple fitting flange and the blind flange, indicating a possible o-ring failure. The leak location was determined using an lel monitor and snoop gas leak detector but the stopple was not disassembled. Lab analysis concluded there are two possible failure scenarios for the o-ring: 1) the o-ring was not properly seated when it was installed. A contributing factor may have been an improperly sized o-ring. 2) the o-ring blew out during service. Contributing factors may have been misalignment of the flanges, improper torque, degradation of the o-ring or an improper size. |
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