Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2017-03-27 — MT
Operator
Cenex Pipeline Llc
Cause
Equipment Failure
Commodity
Refined And/or Petroleum Product (Non-Hvl) Which Is A Liquid At Ambient Conditions
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$57,867
Incident datetime
2017-03-27 11:00
Report number
Location
MT
Narrative
On march 27th, a potential leak was identified at block valve 251.6 (located near west fargo, north dakota, n 46.89783 w 96.90347) during a routine block valve inspection by an operator qualification (oq) qualified employee. Inspection personnel immediately notified cenex management who mobilized the incident command post and initiated response actions. The line segment was not in operation at the time of inspection but the line segment was immediately isolated by closing the nearest upstream and downstream block valves. Cenex response personnel and contractors were dispatched to the area to assess the situation. Air monitoring activities indicated a petroleum hydrocarbon release had occurred. Block valve 251.6 was exposed by excavation on march 28th. Response personnel identified a damaged injection port fitting on the valve body that resulted in the release. The fitting is part of a face seal injection system that is built into the valve. The subject fitting is a threaded fitting originally installed by the valve manufacturer. Description of valve and mainline block valve 251.6 is a cameron t31 full welded body ball valve. The cenex 8' mainline was constructed in 1991 and transports refined petroleum products from minot, nd to receiving facilities located in west fargo, nd. The pipeline primarily consists of 8.625' (outside diameter) pipe with a 0.188' wall thickness, grade API 5l x-52. Mainline operational parameters the pipeline segment from minot to fargo operates intermittently. All block valves on the segment are operated and inspected, in accordance with part 195.420, a minimum of once every six months not to exceed seven and one half months. Line pressures from minot to fargo typically range from 500-1,000 psi. Valve repair the valve has been repaired by oq qualified personnel with the intent of replacing the valve with a new, above-ground assembly. The damaged fitting was removed from the valve and the port plugged with a new threaded plug. All exposed piping, in addition to the valve and appurtenances, was inspected per part 195.569 and found to be in good condition. All pipe coatings were intact and free of signs of corrosion. The supplemental report reflects a time zone correction to align the report with the time zone to the location of the incident.
Detailed record list
Report Received Date
2017-04-28 00:00:00
Iyear
2017
Report Number
20170140
Supplemental Number
30001
Report Type
Supplemental Final
Operator Id
2170
Name
Cenex Pipeline Llc
Operator Street Address
803 Hwy 212 S (Po Box 909)
Operator City Name
Laurel
Operator State Abbreviation
MT
Operator Postal Code
59044
Local Datetime
2017-03-27 11:00:00
Location Latitude
46.89783
Location Longitude
-96.90347
Commodity Released Type
Refined And/or Petroleum Product (Non-Hvl) Which Is A Liquid At Ambient Conditions
Commodity Subtype
Mixture Of Refined Products (Transmix Or Other Mixture)
Unintentional Release Bbls
65
Recovered Bbls
60
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
Incident Identified Datetime
2017-03-27 11:00:00
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2017-03-26 16:30:00
Restart Datetime
2017-04-05 09:00:00
On Site Datetime
2017-03-27 11:00:00
Nrc Rpt Datetime
2017-03-27 13:47:00
Nrc Rpt Num
1174175
Ignite Ind
No
Explode Ind
No
Upstream Valve Type Ind
Manual
Downstream Valve Type Ind
Manual
Num Pub Evacuated
0
Pipe Fac Name
Bv 251.6
Segment Name
Minot To Fargo
Onshore State Abbreviation
Nd
Onshore Postal Code
58078
Onshore City Name
West Fargo
Onshore County Name
Cass County
Designated Location
Milepost/valve Station
Designated Name
Bv 251.6
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
48
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Valve
Valve Type
Mainline
Valve Mainline Type
Ball
Valve Manufacturer
Cameron
Installation Year
1991
Manufactured Year
1991
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Other
Leak Type Other
Threaded Injection Port Nipple
Wildlife Impact Ind
No
Soil Contamination
Yes
Long Term Assessment
Yes
Remediation Ind
Yes
Soil Remed Ind
Yes
Water Contam Ind
No
Could Be Hca
Yes
Commodity Reached Hca
Yes
Other Pop Ind
Yes
Other Pop Yes No
Yes
Est Cost Oper Paid
2000
Est Cost Gas Released
5000
Est Cost Prop Damage
57867
Est Cost Emergency
124618
Est Cost Environmental
165684
Est Cost Other
11340
Est Cost Other Details
Valve Leak Monitoring Installations At Other Cameron Bv Sites Within The System
Prpty
366509
Accident Psig
535
Mop Psig
1440
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
24992
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 controller did not have any indication from either scada or leak detection that would have triggered a response.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Defective Or Loose Tubing Or Fitting
Eq Failure Type
Defective Or Loose Tubing Or Fitting
Eq Additional Other Ind
Yes
Eq Additional Other Details
Having 3rd Part Evaluate The Fitting To Determine Cause Of Failure
Preparer Name
M******* S*****
Preparer Title
Manager Dot Compliance
Preparer Email
M**************@c*****.com
Preparer Telephone
4068619284
Preparer Fax
4066285390
Prepared Date
2018-03-07 00:00:00
Authorizer Name
G*** B****
Authorizer Telephone
4066285200
Authorizer Title
Vp Pipelines And Terminals
Authorizer Email
G*********@c*****.com
Narrative
On march 27th, a potential leak was identified at block valve 251.6 (located near west fargo, north dakota, n 46.89783 w 96.90347) during a routine block valve inspection by an operator qualification (oq) qualified employee. Inspection personnel immediately notified cenex management who mobilized the incident command post and initiated response actions. The line segment was not in operation at the time of inspection but the line segment was immediately isolated by closing the nearest upstream and downstream block valves. Cenex response personnel and contractors were dispatched to the area to assess the situation. Air monitoring activities indicated a petroleum hydrocarbon release had occurred. Block valve 251.6 was exposed by excavation on march 28th. Response personnel identified a damaged injection port fitting on the valve body that resulted in the release. The fitting is part of a face seal injection system that is built into the valve. The subject fitting is a threaded fitting originally installed by the valve manufacturer. Description of valve and mainline block valve 251.6 is a cameron t31 full welded body ball valve. The cenex 8' mainline was constructed in 1991 and transports refined petroleum products from minot, nd to receiving facilities located in west fargo, nd. The pipeline primarily consists of 8.625' (outside diameter) pipe with a 0.188' wall thickness, grade API 5l x-52. Mainline operational parameters the pipeline segment from minot to fargo operates intermittently. All block valves on the segment are operated and inspected, in accordance with part 195.420, a minimum of once every six months not to exceed seven and one half months. Line pressures from minot to fargo typically range from 500-1,000 psi. Valve repair the valve has been repaired by oq qualified personnel with the intent of replacing the valve with a new, above-ground assembly. The damaged fitting was removed from the valve and the port plugged with a new threaded plug. All exposed piping, in addition to the valve and appurtenances, was inspected per part 195.569 and found to be in good condition. All pipe coatings were intact and free of signs of corrosion. The supplemental report reflects a time zone correction to align the report with the time zone to the location of the incident.
| Report Received Date | 2017-04-28 00:00:00 |
|---|---|
| Iyear | 2017 |
| Report Number | 20170140 |
| Supplemental Number | 30001 |
| Report Type | Supplemental Final |
| Operator Id | 2170 PHMSA Enforcement |
| Name | Cenex Pipeline Llc |
| Operator Street Address | 803 Hwy 212 S (Po Box 909) |
| Operator City Name | Laurel |
| Operator State Abbreviation | MT |
| Operator Postal Code | 59044 |
| Local Datetime | 2017-03-27 11:00:00 |
| Location Latitude | 46.89783 Google Maps OpenStreetMap |
| Location Longitude | -96.90347 Google Maps OpenStreetMap |
| Commodity Released Type | Refined And/or Petroleum Product (Non-Hvl) Which Is A Liquid At Ambient Conditions |
| Commodity Subtype | Mixture Of Refined Products (Transmix Or Other Mixture) |
| Unintentional Release Bbls | 65 |
| Recovered Bbls | 60 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| Incident Identified Datetime | 2017-03-27 11:00:00 |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2017-03-26 16:30:00 |
| Restart Datetime | 2017-04-05 09:00:00 |
| On Site Datetime | 2017-03-27 11:00:00 |
| Nrc Rpt Datetime | 2017-03-27 13:47:00 |
| Nrc Rpt Num | 1174175 NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Upstream Valve Type Ind | Manual |
| Downstream Valve Type Ind | Manual |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Bv 251.6 |
| Segment Name | Minot To Fargo |
| Onshore State Abbreviation | Nd |
| Onshore Postal Code | 58078 |
| Onshore City Name | West Fargo |
| Onshore County Name | Cass County |
| Designated Location | Milepost/valve Station |
| Designated Name | Bv 251.6 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 48 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Valve |
| Valve Type | Mainline |
| Valve Mainline Type | Ball |
| Valve Manufacturer | Cameron |
| Installation Year | 1991 |
| Manufactured Year | 1991 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Other |
| Leak Type Other | Threaded Injection Port Nipple |
| Wildlife Impact Ind | No |
| Soil Contamination | Yes |
| Long Term Assessment | Yes |
| Remediation Ind | Yes |
| Soil Remed Ind | Yes |
| Water Contam Ind | No |
| Could Be Hca | Yes |
| Commodity Reached Hca | Yes |
| Other Pop Ind | Yes |
| Other Pop Yes No | Yes |
| Est Cost Oper Paid | 2000 |
| Est Cost Gas Released | 5000 |
| Est Cost Prop Damage | 57867 |
| Est Cost Emergency | 124618 |
| Est Cost Environmental | 165684 |
| Est Cost Other | 11340 |
| Est Cost Other Details | Valve Leak Monitoring Installations At Other Cameron Bv Sites Within The System |
| Prpty | 366509 |
| Accident Psig | 535 |
| Mop Psig | 1440 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 24992 |
| 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 controller did not have any indication from either scada or leak detection that would have triggered a response. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Defective Or Loose Tubing Or Fitting |
| Eq Failure Type | Defective Or Loose Tubing Or Fitting |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | Having 3rd Part Evaluate The Fitting To Determine Cause Of Failure |
| Preparer Name | M******* S***** |
| Preparer Title | Manager Dot Compliance |
| Preparer Email | M**************@c*****.com |
| Preparer Telephone | 4068619284 |
| Preparer Fax | 4066285390 |
| Prepared Date | 2018-03-07 00:00:00 |
| Authorizer Name | G*** B**** |
| Authorizer Telephone | 4066285200 |
| Authorizer Title | Vp Pipelines And Terminals |
| Authorizer Email | G*********@c*****.com |
| Narrative | On march 27th, a potential leak was identified at block valve 251.6 (located near west fargo, north dakota, n 46.89783 w 96.90347) during a routine block valve inspection by an operator qualification (oq) qualified employee. Inspection personnel immediately notified cenex management who mobilized the incident command post and initiated response actions. The line segment was not in operation at the time of inspection but the line segment was immediately isolated by closing the nearest upstream and downstream block valves. Cenex response personnel and contractors were dispatched to the area to assess the situation. Air monitoring activities indicated a petroleum hydrocarbon release had occurred. Block valve 251.6 was exposed by excavation on march 28th. Response personnel identified a damaged injection port fitting on the valve body that resulted in the release. The fitting is part of a face seal injection system that is built into the valve. The subject fitting is a threaded fitting originally installed by the valve manufacturer. Description of valve and mainline block valve 251.6 is a cameron t31 full welded body ball valve. The cenex 8' mainline was constructed in 1991 and transports refined petroleum products from minot, nd to receiving facilities located in west fargo, nd. The pipeline primarily consists of 8.625' (outside diameter) pipe with a 0.188' wall thickness, grade API 5l x-52. Mainline operational parameters the pipeline segment from minot to fargo operates intermittently. All block valves on the segment are operated and inspected, in accordance with part 195.420, a minimum of once every six months not to exceed seven and one half months. Line pressures from minot to fargo typically range from 500-1,000 psi. Valve repair the valve has been repaired by oq qualified personnel with the intent of replacing the valve with a new, above-ground assembly. The damaged fitting was removed from the valve and the port plugged with a new threaded plug. All exposed piping, in addition to the valve and appurtenances, was inspected per part 195.569 and found to be in good condition. All pipe coatings were intact and free of signs of corrosion. The supplemental report reflects a time zone correction to align the report with the time zone to the location of the incident. |
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