Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2017-11-14 — TX
Operator
Dapl-Etco Operations Management, Llc
Cause
Material Failure Of Pipe Or Weld
Commodity
Crude Oil
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$19,119
Incident datetime
2017-11-14 07:10
Report number
Location
TX
Narrative
Operator employee discovered the leak during routine morning walkdown of facility at approximately 07:10 am. Call was placed immediately to the control center to isolate the station from the main line. After leak was isolated and stopped all free product was recovered and cleaned up inside pump house. Inspection determined leak came from a crack in a butt weld connection of a flange to a 2" thermal relief line around the discharge main line valve. Cause of the crack was determined to be excessive vibration. Subsequent to the release the welded connection was repaired. To prevent recurrence the thermal relief line has been redesigned so that the ends on either side of the main line valve remain blind flanged during normal operations. If the discharge valve is going to be closed a spool piece of 2" piping will be installed to complete the relief circuit while the valve remains closed. This design eliminates the stresses on the welds caused by the vibration. Other stations were inspected for similar design and circumstances. Where it was determined that vibration could be an issue temporary bracing was installed on the thermal relief lines until such time a permanent, engineered solution is designed and implemented.
Detailed record list
Report Received Date
2017-12-11 00:00:00
Iyear
2017
Report Number
20170407
Supplemental Number
22920
Report Type
Original Final
Operator Id
39205
Name
Dapl-Etco Operations Management, Llc
Operator Street Address
1300 Main Street
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Local Datetime
2017-11-14 07:00:00
Location Latitude
41.916909
Location Longitude
-93.567881
Commodity Released Type
Crude Oil
Unintentional Release Bbls
0.5
Recovered Bbls
0.5
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
Incident Identified Datetime
2017-11-14 07:10:00
System Part Involved
Onshore Pump/meter Station Equipment And Piping
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2017-11-14 07:24:00
Restart Datetime
2017-11-15 21:44:00
On Site Datetime
2017-11-14 07:10:00
Nrc Rpt Num
Nrc Notification Not Required
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Dapl-Cambridge Pump Station
Segment Name
29004-30" Watford City To Patoka
Onshore State Abbreviation
Ia
Onshore Postal Code
50014
Onshore City Name
Cambridge
Onshore County Name
Styory
Designated Location
Survey Station No.
Designated Name
673.73
Federal
No
Location Type
Totally Contained On Operator-Controlled Property
Incident Area Type
Aboveground
Incident Area Subtype
Inside A Building
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Weld, Including Heat-Affected Zone
Weld Subtype
Other Butt Weld
Installation Year
2016
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
No
Est Cost Oper Paid
0
Est Cost Gas Released
0
Est Cost Prop Damage
19119
Est Cost Emergency
19000
Est Cost Environmental
0
Est Cost Other
0
Prpty
38119
Accident Psig
400
Mop Psig
1440
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction 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
A review of the accident determined that there were no control room actions that contributed to the event.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Material Failure Of Pipe Or Weld
Cause Details
Design-, Construction-, Installation-, Or Fabrication-Related
Field Exam Ind
Yes
Failure Type
Design-, Construction-, Installation-, Or Fabrication-Related
Fatigue Vibr Related
Yes
Failure Subtype
Mechanical Vibration
Additional Crack Ind
Yes
Collected Data Ind
No
Has Hydrtst Conduc Before Ind
No
Direct Asmnt Conducted
No
Non Destructive Exam Ind
Yes
Exm Radiography Rcnt Year
2016
Exm Radiography Rcnt Ind
Yes
Preparer Name
T*** G* N*******
Preparer Title
Sr. Manager-Dot Compliance
Preparer Email
T************@e*************.com
Preparer Telephone
281-637-6576
Preparer Fax
877-917-0448
Prepared Date
2017-12-11 00:00:00
Authorizer Name
T*** G* N*******
Authorizer Telephone
281-637-6576
Authorizer Title
Sr. Manager-Dot Compliance
Authorizer Email
T************@e*************.com
Narrative
Operator employee discovered the leak during routine morning walkdown of facility at approximately 07:10 am. Call was placed immediately to the control center to isolate the station from the main line. After leak was isolated and stopped all free product was recovered and cleaned up inside pump house. Inspection determined leak came from a crack in a butt weld connection of a flange to a 2" thermal relief line around the discharge main line valve. Cause of the crack was determined to be excessive vibration. Subsequent to the release the welded connection was repaired. To prevent recurrence the thermal relief line has been redesigned so that the ends on either side of the main line valve remain blind flanged during normal operations. If the discharge valve is going to be closed a spool piece of 2" piping will be installed to complete the relief circuit while the valve remains closed. This design eliminates the stresses on the welds caused by the vibration. Other stations were inspected for similar design and circumstances. Where it was determined that vibration could be an issue temporary bracing was installed on the thermal relief lines until such time a permanent, engineered solution is designed and implemented.
| Report Received Date | 2017-12-11 00:00:00 |
|---|---|
| Iyear | 2017 |
| Report Number | 20170407 |
| Supplemental Number | 22920 |
| Report Type | Original Final |
| Operator Id | 39205 PHMSA Enforcement |
| Name | Dapl-Etco Operations Management, Llc |
| Operator Street Address | 1300 Main Street |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77002 |
| Local Datetime | 2017-11-14 07:00:00 |
| Location Latitude | 41.916909 Google Maps OpenStreetMap |
| Location Longitude | -93.567881 Google Maps OpenStreetMap |
| Commodity Released Type | Crude Oil |
| Unintentional Release Bbls | 0.5 |
| Recovered Bbls | 0.5 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| Incident Identified Datetime | 2017-11-14 07:10:00 |
| System Part Involved | Onshore Pump/meter Station Equipment And Piping |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2017-11-14 07:24:00 |
| Restart Datetime | 2017-11-15 21:44:00 |
| On Site Datetime | 2017-11-14 07:10:00 |
| Nrc Rpt Num | Nrc Notification Not Required NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Dapl-Cambridge Pump Station |
| Segment Name | 29004-30" Watford City To Patoka |
| Onshore State Abbreviation | Ia |
| Onshore Postal Code | 50014 |
| Onshore City Name | Cambridge |
| Onshore County Name | Styory |
| Designated Location | Survey Station No. |
| Designated Name | 673.73 |
| Federal | No |
| Location Type | Totally Contained On Operator-Controlled Property |
| Incident Area Type | Aboveground |
| Incident Area Subtype | Inside A Building |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Weld, Including Heat-Affected Zone |
| Weld Subtype | Other Butt Weld |
| Installation Year | 2016 |
| 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 | No |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 0 |
| Est Cost Prop Damage | 19119 |
| Est Cost Emergency | 19000 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 38119 |
| Accident Psig | 400 |
| Mop Psig | 1440 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction 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 | A review of the accident determined that there were no control room actions that contributed to the event. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Material Failure Of Pipe Or Weld |
| Cause Details | Design-, Construction-, Installation-, Or Fabrication-Related |
| Field Exam Ind | Yes |
| Failure Type | Design-, Construction-, Installation-, Or Fabrication-Related |
| Fatigue Vibr Related | Yes |
| Failure Subtype | Mechanical Vibration |
| Additional Crack Ind | Yes |
| Collected Data Ind | No |
| Has Hydrtst Conduc Before Ind | No |
| Direct Asmnt Conducted | No |
| Non Destructive Exam Ind | Yes |
| Exm Radiography Rcnt Year | 2016 |
| Exm Radiography Rcnt Ind | Yes |
| Preparer Name | T*** G* N******* |
| Preparer Title | Sr. Manager-Dot Compliance |
| Preparer Email | T************@e*************.com |
| Preparer Telephone | 281-637-6576 |
| Preparer Fax | 877-917-0448 |
| Prepared Date | 2017-12-11 00:00:00 |
| Authorizer Name | T*** G* N******* |
| Authorizer Telephone | 281-637-6576 |
| Authorizer Title | Sr. Manager-Dot Compliance |
| Authorizer Email | T************@e*************.com |
| Narrative | Operator employee discovered the leak during routine morning walkdown of facility at approximately 07:10 am. Call was placed immediately to the control center to isolate the station from the main line. After leak was isolated and stopped all free product was recovered and cleaned up inside pump house. Inspection determined leak came from a crack in a butt weld connection of a flange to a 2" thermal relief line around the discharge main line valve. Cause of the crack was determined to be excessive vibration. Subsequent to the release the welded connection was repaired. To prevent recurrence the thermal relief line has been redesigned so that the ends on either side of the main line valve remain blind flanged during normal operations. If the discharge valve is going to be closed a spool piece of 2" piping will be installed to complete the relief circuit while the valve remains closed. This design eliminates the stresses on the welds caused by the vibration. Other stations were inspected for similar design and circumstances. Where it was determined that vibration could be an issue temporary bracing was installed on the thermal relief lines until such time a permanent, engineered solution is designed and implemented. |
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