Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2013-05-31 — 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)
$150,000
Incident datetime
2013-05-31 11:20
Report number
Location
TX
Narrative
On april 17, 2013, enterprise installed a split tee for the purpose of establishing an interconnect to another pipeline. On may 31 at 11:20 am while hot tapping the split tee, a contractor noticed a leak from the split tee circumferential weld as soon as the pilot bit penetrated the inner surface of the carrier pipe. The contractor immediately shut down their equipment and notified an on-site company employee who stopped the work and evacuated personnel from the leak site. The company employee notified pl control who shut down the pipeline at 11:30 am. The line segment was initially isolated at mocane station (south of the leak site) and the line pressure was reduced to approximately 300 psig. The leak site was then isolated by closing the mainline block valve approximately 11 miles north of mocane station. On june 1, work was initiated to install stopples on both sides of the leak. On june 4, the stopples were set and leak site was isolated, then blown down. On june 5, a cut out was made and replacement pipe was installed along with a new tee. On june 6, the stopples were retracted and the pipeline was purged to allow the line to return to service. Metallurgical analysis of the failure segment identified a crack in the circumferential weld of the split tee where the leak occurred. Material analysis of the weld material identified the filler material contained more chromium than appropriate. Enterprise believes that the welding procedure is in compliance with applicable regulations and is technically sound, however recognizes that the procedure can be improved to provide additional clarity when selecting welding consumables for certain jobs and is taking action to provide that clarification.
Detailed record list
Report Received Date
2013-06-28 00:00:00
Iyear
2013
Report Number
20130230
Supplemental Number
18621
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
2013-05-31 11:20:00
Location Latitude
36.947219
Location Longitude
-100.293152
Commodity Released Type
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Commodity Subtype
Other Hvl
Commodity Details
Y-Grade
Unintentional Release Bbls
200
Intentional Release Bbls
14.5
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Contractor Working For The Operator
Incident Identified Datetime
2013-05-31 11:20:00
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2013-05-31 11:30:00
Restart Datetime
2013-06-06 14:34:00
On Site Datetime
2013-05-31 11:20:00
Nrc Rpt Datetime
2013-05-31 12:37:00
Nrc Rpt Num
1048859
Ignite Ind
No
Explode Ind
No
Upstream Valve Type Ind
Manual
Downstream Valve Type Ind
Remotely Controlled
Num Pub Evacuated
0
Pipe Fac Name
South Leg Brown Line
Segment Name
Lid 7465
Onshore State Abbreviation
Ok
Onshore Postal Code
73938
Onshore City Name
Forgan
Onshore County Name
Beaver
Designated Location
Milepost/valve Station
Designated Name
Milepost 341
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Exposed Due To Excavation
Depth Of Cover
48
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Weld, Including Heat-Affected Zone
Weld Subtype
Fillet Weld
Installation Year
2013
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Crack
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
Yes
Usa Ecological Ind
Yes
Usa Ecological Yes No
Yes
Est Cost Oper Paid
0
Est Cost Gas Released
7000
Est Cost Prop Damage
150000
Est Cost Emergency
150000
Est Cost Environmental
0
Est Cost Other
18000
Est Cost Other Details
Metallurgical Analysis Of Failure Segment.
Prpty
325000
Accident Psig
820
Mop Psig
1480
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
59400
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
Yes
Contractor Drug Test Ind
Yes
Num Employees Tested
2
Num Employees Failed
0
Num Contractors Tested
2
Num Contractors Failed
0
Cause
Incorrect Operation
Cause Details
Other Incorrect Operation
Operation Type
Other Incorrect Operation
Operation Details
Welding Procedures And Pre-Assessment Letter Do Not Specify The Type Of Welding Electrodes To Utilizer Per Application.
Related Other Ind
Yes
Operation Related Details
Welding Procedures And Pre-Assessment Letter Do Not Specify The Type Of Welding Electrodes To Utilizer Per Application.
Category Type
Right-Of-Way Activities
Operator Qualification Ind
Yes
Qualified Individuals
Yes, They Were Qualified For The Task(S)
Preparer Name
N*** T*****
Preparer Title
Pipeline Compliance Engineer
Preparer Email
N*******@e****.com
Preparer Telephone
713-381-2493
Prepared Date
2013-09-25 00:00:00
Authorizer Name
N*** T*****
Authorizer Telephone
713-381-2493
Authorizer Title
Pipeline Compliance Engineer
Authorizer Email
N*******@e****.com
Narrative
On april 17, 2013, enterprise installed a split tee for the purpose of establishing an interconnect to another pipeline. On may 31 at 11:20 am while hot tapping the split tee, a contractor noticed a leak from the split tee circumferential weld as soon as the pilot bit penetrated the inner surface of the carrier pipe. The contractor immediately shut down their equipment and notified an on-site company employee who stopped the work and evacuated personnel from the leak site. The company employee notified pl control who shut down the pipeline at 11:30 am. The line segment was initially isolated at mocane station (south of the leak site) and the line pressure was reduced to approximately 300 psig. The leak site was then isolated by closing the mainline block valve approximately 11 miles north of mocane station. On june 1, work was initiated to install stopples on both sides of the leak. On june 4, the stopples were set and leak site was isolated, then blown down. On june 5, a cut out was made and replacement pipe was installed along with a new tee. On june 6, the stopples were retracted and the pipeline was purged to allow the line to return to service. Metallurgical analysis of the failure segment identified a crack in the circumferential weld of the split tee where the leak occurred. Material analysis of the weld material identified the filler material contained more chromium than appropriate. Enterprise believes that the welding procedure is in compliance with applicable regulations and is technically sound, however recognizes that the procedure can be improved to provide additional clarity when selecting welding consumables for certain jobs and is taking action to provide that clarification.
| Report Received Date | 2013-06-28 00:00:00 |
|---|---|
| Iyear | 2013 |
| Report Number | 20130230 |
| Supplemental Number | 18621 |
| 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 | 2013-05-31 11:20:00 |
| Location Latitude | 36.947219 Google Maps OpenStreetMap |
| Location Longitude | -100.293152 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 | Y-Grade |
| Unintentional Release Bbls | 200 |
| Intentional Release Bbls | 14.5 |
| Recovered Bbls | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Contractor Working For The Operator |
| Incident Identified Datetime | 2013-05-31 11:20:00 |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2013-05-31 11:30:00 |
| Restart Datetime | 2013-06-06 14:34:00 |
| On Site Datetime | 2013-05-31 11:20:00 |
| Nrc Rpt Datetime | 2013-05-31 12:37:00 |
| Nrc Rpt Num | 1048859 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 | South Leg Brown Line |
| Segment Name | Lid 7465 |
| Onshore State Abbreviation | Ok |
| Onshore Postal Code | 73938 |
| Onshore City Name | Forgan |
| Onshore County Name | Beaver |
| Designated Location | Milepost/valve Station |
| Designated Name | Milepost 341 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Exposed Due To Excavation |
| Depth Of Cover | 48 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Weld, Including Heat-Affected Zone |
| Weld Subtype | Fillet Weld |
| Installation Year | 2013 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Crack |
| 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 | Yes |
| Usa Ecological Ind | Yes |
| Usa Ecological Yes No | Yes |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 7000 |
| Est Cost Prop Damage | 150000 |
| Est Cost Emergency | 150000 |
| Est Cost Environmental | 0 |
| Est Cost Other | 18000 |
| Est Cost Other Details | Metallurgical Analysis Of Failure Segment. |
| Prpty | 325000 |
| Accident Psig | 820 |
| Mop Psig | 1480 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 59400 |
| 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 | Yes |
| Contractor Drug Test Ind | Yes |
| Num Employees Tested | 2 |
| Num Employees Failed | 0 |
| Num Contractors Tested | 2 |
| Num Contractors Failed | 0 |
| Cause | Incorrect Operation |
| Cause Details | Other Incorrect Operation |
| Operation Type | Other Incorrect Operation |
| Operation Details | Welding Procedures And Pre-Assessment Letter Do Not Specify The Type Of Welding Electrodes To Utilizer Per Application. |
| Related Other Ind | Yes |
| Operation Related Details | Welding Procedures And Pre-Assessment Letter Do Not Specify The Type Of Welding Electrodes To Utilizer Per Application. |
| Category Type | Right-Of-Way Activities |
| Operator Qualification Ind | Yes |
| Qualified Individuals | Yes, They Were Qualified For The Task(S) |
| Preparer Name | N*** T***** |
| Preparer Title | Pipeline Compliance Engineer |
| Preparer Email | N*******@e****.com |
| Preparer Telephone | 713-381-2493 |
| Prepared Date | 2013-09-25 00:00:00 |
| Authorizer Name | N*** T***** |
| Authorizer Telephone | 713-381-2493 |
| Authorizer Title | Pipeline Compliance Engineer |
| Authorizer Email | N*******@e****.com |
| Narrative | On april 17, 2013, enterprise installed a split tee for the purpose of establishing an interconnect to another pipeline. On may 31 at 11:20 am while hot tapping the split tee, a contractor noticed a leak from the split tee circumferential weld as soon as the pilot bit penetrated the inner surface of the carrier pipe. The contractor immediately shut down their equipment and notified an on-site company employee who stopped the work and evacuated personnel from the leak site. The company employee notified pl control who shut down the pipeline at 11:30 am. The line segment was initially isolated at mocane station (south of the leak site) and the line pressure was reduced to approximately 300 psig. The leak site was then isolated by closing the mainline block valve approximately 11 miles north of mocane station. On june 1, work was initiated to install stopples on both sides of the leak. On june 4, the stopples were set and leak site was isolated, then blown down. On june 5, a cut out was made and replacement pipe was installed along with a new tee. On june 6, the stopples were retracted and the pipeline was purged to allow the line to return to service. Metallurgical analysis of the failure segment identified a crack in the circumferential weld of the split tee where the leak occurred. Material analysis of the weld material identified the filler material contained more chromium than appropriate. Enterprise believes that the welding procedure is in compliance with applicable regulations and is technically sound, however recognizes that the procedure can be improved to provide additional clarity when selecting welding consumables for certain jobs and is taking action to provide that clarification. |
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