Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2017-09-05 — OK
Operator
Magellan Ammonia Pipeline, L.p.
Cause
Material Failure Of Pipe Or Weld
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)
$4,000
Incident datetime
2017-09-05 13:30
Report number
Location
OK
Narrative
Local technician received notification from a third party regarding a potential dead spot in a farm field. Upon investigation from magellan employee, an area of dead vegetation was observed with an anhydrous ammonia odor. The investigation event was initiated at 13:30. The pipeline was not active at the time of event. The technician closed the manual valves at mp 226 and 217.5. Upon excavation of the pipe, the release was determined to be a pinhole in the longitudinal seam. A plidco clamp was bolted to the pipe to stop the release and was subsequently welded to make the repair permanent. Approximately 44 cubic yards of affected soil was removed
Detailed record list
Report Received Date
2017-10-04 00:00:00
Iyear
2017
Report Number
20170325
Supplemental Number
22708
Report Type
Original Final
Operator Id
12105
Name
Magellan Ammonia Pipeline, L.p.
Operator Street Address
One Williams Center, Otc-9 P.o. Box 22186
Operator City Name
Tulsa
Operator State Abbreviation
OK
Operator Postal Code
74172
Local Datetime
2017-09-05 13:30:00
Location Latitude
43.931441
Location Longitude
-94.113196
Commodity Released Type
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Commodity Subtype
Anhydrous Ammonia
Unintentional Release Bbls
44
Intentional Release Bbls
0
Recovered Bbls
44
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Notification From Public
Incident Identified Datetime
2017-09-05 13:30:00
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Shutdown Due Accident Ind
No
Shutdown Explain
Pipeline Was Shut Down Prior To The Time Of The Incident
On Site Datetime
2017-09-05 13:30:00
Nrc Rpt Datetime
2017-09-05 14:10:00
Nrc Rpt Num
1189436
Ignite Ind
No
Explode Ind
No
Upstream Valve Type Ind
Manual
Downstream Valve Type Ind
Manual
Num Pub Evacuated
0
Pipe Fac Name
Nh3 Garner Lateral 6'
Segment Name
Line Id 510
Onshore State Abbreviation
Mn
Onshore Postal Code
56034
Onshore City Name
Not Within A Municipality
Onshore County Name
Blue Earth
Designated Location
Milepost/valve Station
Designated Name
225.3
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
Pipe
Pipe Type
Pipe Seam
Pipe Diameter
6.625
Pipe Wall Thickness
0.156
Pipe Smys
46000
Pipe Specification
Api5lx 46
Pipe Seam Type
Erw - Low Frequency
Pipe Manufacturer
Republic Steel
Pipe Coating Type
Polyolefin
Installation Year
1978
Manufactured Year
1978
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Pinhole
Wildlife Impact Ind
No
Soil Contamination
Yes
Long Term Assessment
No
Remediation Ind
No
Water Contam Ind
No
Could Be Hca
No
Commodity Reached Hca
No
Est Cost Oper Paid
5000
Est Cost Gas Released
1640
Est Cost Prop Damage
4000
Est Cost Emergency
25000
Est Cost Environmental
0
Est Cost Other
0
Prpty
35640
Accident Psig
322
Mop Psig
1152
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
45201
Internal Inspection Ind
Yes
Operation Complications Ind
Yes
Incompat Commod Ind
Yes
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
There were no scada indications of a release, and the line was down at the time of the report.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Material Failure Of Pipe Or Weld
Cause Details
Original Manufacturing-Related (Not Girth Weld Or Other Welds Formed In The Field)
Field Exam Ind
Yes
Failure Type
Original Manufacturing-Related (Not Girth Weld Or Other Welds Formed In The Field)
Other Factor
Yes
Other Factor Details
None
Pwf Additional Other Ind
Yes
Collected Data Ind
Yes
Axial Magnetic Flx Lkg Ind
Yes
Geometry Deformation Ind
Yes
Axial Recent Year
2017
Geometry Recent Year
2016
Has Hydrtst Conduc Before Ind
Yes
Hydrtst Most Rcnt Year
2011
Hydrtst Most Rcnt Pressure
1966
Direct Asmnt Conducted
No
Non Destructive Exam Ind
No
Preparer Name
S****** L******
Preparer Title
Ai Analyst
Preparer Email
S**************@m*********.com
Preparer Telephone
9185747327
Preparer Fax
9185747376
Prepared Date
2017-10-04 00:00:00
Authorizer Name
S****** L******
Authorizer Telephone
9185747327
Authorizer Title
Ai Analyst
Authorizer Email
S**************@m*********.com
Narrative
Local technician received notification from a third party regarding a potential dead spot in a farm field. Upon investigation from magellan employee, an area of dead vegetation was observed with an anhydrous ammonia odor. The investigation event was initiated at 13:30. The pipeline was not active at the time of event. The technician closed the manual valves at mp 226 and 217.5. Upon excavation of the pipe, the release was determined to be a pinhole in the longitudinal seam. A plidco clamp was bolted to the pipe to stop the release and was subsequently welded to make the repair permanent. Approximately 44 cubic yards of affected soil was removed
| Report Received Date | 2017-10-04 00:00:00 |
|---|---|
| Iyear | 2017 |
| Report Number | 20170325 |
| Supplemental Number | 22708 |
| Report Type | Original Final |
| Operator Id | 12105 PHMSA Enforcement |
| Name | Magellan Ammonia Pipeline, L.p. |
| Operator Street Address | One Williams Center, Otc-9 P.o. Box 22186 |
| Operator City Name | Tulsa |
| Operator State Abbreviation | OK |
| Operator Postal Code | 74172 |
| Local Datetime | 2017-09-05 13:30:00 |
| Location Latitude | 43.931441 Google Maps OpenStreetMap |
| Location Longitude | -94.113196 Google Maps OpenStreetMap |
| Commodity Released Type | Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions |
| Commodity Subtype | Anhydrous Ammonia |
| Unintentional Release Bbls | 44 |
| Intentional Release Bbls | 0 |
| Recovered Bbls | 44 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Notification From Public |
| Incident Identified Datetime | 2017-09-05 13:30:00 |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | Pipeline Was Shut Down Prior To The Time Of The Incident |
| On Site Datetime | 2017-09-05 13:30:00 |
| Nrc Rpt Datetime | 2017-09-05 14:10:00 |
| Nrc Rpt Num | 1189436 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 | Nh3 Garner Lateral 6' |
| Segment Name | Line Id 510 |
| Onshore State Abbreviation | Mn |
| Onshore Postal Code | 56034 |
| Onshore City Name | Not Within A Municipality |
| Onshore County Name | Blue Earth |
| Designated Location | Milepost/valve Station |
| Designated Name | 225.3 |
| 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 | Pipe |
| Pipe Type | Pipe Seam |
| Pipe Diameter | 6.625 |
| Pipe Wall Thickness | 0.156 |
| Pipe Smys | 46000 |
| Pipe Specification | Api5lx 46 |
| Pipe Seam Type | Erw - Low Frequency |
| Pipe Manufacturer | Republic Steel |
| Pipe Coating Type | Polyolefin |
| Installation Year | 1978 |
| Manufactured Year | 1978 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Pinhole |
| Wildlife Impact Ind | No |
| Soil Contamination | Yes |
| Long Term Assessment | No |
| Remediation Ind | No |
| Water Contam Ind | No |
| Could Be Hca | No |
| Commodity Reached Hca | No |
| Est Cost Oper Paid | 5000 |
| Est Cost Gas Released | 1640 |
| Est Cost Prop Damage | 4000 |
| Est Cost Emergency | 25000 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 35640 |
| Accident Psig | 322 |
| Mop Psig | 1152 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 45201 |
| Internal Inspection Ind | Yes |
| Operation Complications Ind | Yes |
| Incompat Commod Ind | Yes |
| 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 | There were no scada indications of a release, and the line was down at the time of the report. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Material Failure Of Pipe Or Weld |
| Cause Details | Original Manufacturing-Related (Not Girth Weld Or Other Welds Formed In The Field) |
| Field Exam Ind | Yes |
| Failure Type | Original Manufacturing-Related (Not Girth Weld Or Other Welds Formed In The Field) |
| Other Factor | Yes |
| Other Factor Details | None |
| Pwf Additional Other Ind | Yes |
| Collected Data Ind | Yes |
| Axial Magnetic Flx Lkg Ind | Yes |
| Geometry Deformation Ind | Yes |
| Axial Recent Year | 2017 |
| Geometry Recent Year | 2016 |
| Has Hydrtst Conduc Before Ind | Yes |
| Hydrtst Most Rcnt Year | 2011 |
| Hydrtst Most Rcnt Pressure | 1966 |
| Direct Asmnt Conducted | No |
| Non Destructive Exam Ind | No |
| Preparer Name | S****** L****** |
| Preparer Title | Ai Analyst |
| Preparer Email | S**************@m*********.com |
| Preparer Telephone | 9185747327 |
| Preparer Fax | 9185747376 |
| Prepared Date | 2017-10-04 00:00:00 |
| Authorizer Name | S****** L****** |
| Authorizer Telephone | 9185747327 |
| Authorizer Title | Ai Analyst |
| Authorizer Email | S**************@m*********.com |
| Narrative | Local technician received notification from a third party regarding a potential dead spot in a farm field. Upon investigation from magellan employee, an area of dead vegetation was observed with an anhydrous ammonia odor. The investigation event was initiated at 13:30. The pipeline was not active at the time of event. The technician closed the manual valves at mp 226 and 217.5. Upon excavation of the pipe, the release was determined to be a pinhole in the longitudinal seam. A plidco clamp was bolted to the pipe to stop the release and was subsequently welded to make the repair permanent. Approximately 44 cubic yards of affected soil was removed |
External Resources
PHMSA pipeline safety insights.
Product
Features
Company
All rights reserved. Copyright © by ClearPHMSA