Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2016-10-17 — 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
1 fatality
1 injury
Property damage (nominal)
$184,500
Incident datetime
2016-10-17 21:14
Report number
Location
OK
Narrative
At 21:03:40 on 10/17/2016, a release occurred on the magellan ammonia pipeline, l.P. Valley to missouri river pipeline segment. At 21:14 magellan initiated a complete pipeline shutdown and isolation based on scada and the cpm (plm) system indications. While completing the pipeline shutdown and isolation, magellan received a telephonic notification from a third party regarding a vapor cloud and strong odor. Magellan declared a code red at 21:26:23, initiating a full emergency response. Field operations were notified and employees were dispatched to close manual valves. The psap (public access safety point) and nrc were notified and provided with an estimated release volume of ammonia. The initial nrc report number was 1161809. Additional nrc reports (1161815 and 116831) were made revising the estimated amounts released as additional information became available. Results of the national transportation safety board investigation indicate the probable cause of the pipeline rupture was corrosion fatigue cracks that grew and coalesced under disbonded polyethylene tape coating. Contributing to the location of the cracking was external loading that caused bending stress in the pipe in addition to the cyclic stresses in the pipe from the internal pressure of the ammonia transported. Decommissioning of the anhydrous ammonia pipeline system was successfully completed on april 10, 2020. Supplemental/final (5/19/2020): part c6, d8d, d8g, g5-1,3,4, h
Detailed record list
Report Received Date
2016-11-16 00:00:00
Iyear
2016
Report Number
20160377
Supplemental Number
33776
Report Type
Supplemental Final
Operator Id
12105
Name
Magellan Ammonia Pipeline, L.p.
Operator Street Address
One Williams Center, Md 28
Operator City Name
Tulsa
Operator State Abbreviation
OK
Operator Postal Code
74172
Local Datetime
2016-10-17 21:03:00
Location Latitude
41.90199
Location Longitude
-96.24944
Commodity Released Type
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Commodity Subtype
Anhydrous Ammonia
Unintentional Release Bbls
2587
Intentional Release Bbls
0
Recovered Bbls
1064
Fatality Ind
Yes
Num Emp Fatalities
0
Num Contr Fatalities
0
Num Er Fatalities
0
Num Worker Fatalities
0
Num Gp Fatalities
1
Fatal
1
Injury Ind
Yes
Num Emp Injuries
0
Num Contr Injuries
0
Num Er Injuries
0
Num Worker Injuries
0
Num Gp Injuries
1
Injure
1
Accident Identifier
Cpm Leak Detection System Or Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Calculations)
Incident Identified Datetime
2016-10-17 21:14:00
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2016-10-17 21:14:00
Restart Datetime
2016-11-15 15:30:00
On Site Datetime
2016-10-17 22:50:00
Nrc Rpt Datetime
2016-10-17 21:42:00
Nrc Rpt Num
1161809
Ignite Ind
No
Explode Ind
No
Upstream Valve Type Ind
Remotely Controlled
Downstream Valve Type Ind
Remotely Controlled
Num Pub Evacuated
49
Pipe Fac Name
Valley To Whiting Anhydrous Ammonia Line
Segment Name
Line Number 502
Onshore State Abbreviation
Ne
Onshore Postal Code
68061
Onshore City Name
Not Within A Municipality
Onshore County Name
Burt
Designated Location
Milepost/valve Station
Designated Name
263.3178
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 Body
Pipe Diameter
8
Pipe Wall Thickness
0.156
Pipe Smys
46000
Pipe Specification
Api 5l-X46
Pipe Seam Type
Erw - Low Frequency
Pipe Manufacturer
Lone Star Steel
Pipe Coating Type
Cold Applied Tape
Installation Year
1968
Manufactured Year
1968
Material Involved
Carbon Steel
Release Type
Rupture
Rupture Orient
Other
Rupture Details
Spiral
Rupture Width
0.2
Rupture Length
11.9
Wildlife Impact Ind
Yes
Terrestrial Impact Ind
Yes
Soil Contamination
Yes
Long Term Assessment
No
Remediation Ind
Yes
Soil Remed Ind
Yes
Vegetation Remed Ind
Yes
Water Contam Ind
No
Could Be Hca
No
Commodity Reached Hca
No
Est Cost Oper Paid
61397
Est Cost Gas Released
139077
Est Cost Prop Damage
184500
Est Cost Emergency
2359186
Est Cost Environmental
0
Est Cost Other
68338
Est Cost Other Details
Temporary Lodging, Food, Donations & Miscellaneous Expenses
Prpty
2812498
Accident Psig
800
Mop Psig
1198
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
119935
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
Yes
Scada Conf Ind
Yes
Cpm In Place Ind
Yes
Cpm Operating Ind
Yes
Cpm Functional Ind
Yes
Cpm Detection Ind
Yes
Cpm Conf Ind
Yes
Investigation Status
Yes, but the investigation of the control room and/or controller actions has not yet been completed by the operator (supplemental report required)
Employee Drug Test Ind
Yes
Contractor Drug Test Ind
No
Num Employees Tested
1
Num Employees Failed
0
Cause
Material Failure Of Pipe Or Weld
Cause Details
Environmental Cracking-Related
Metallurgical Ind
Yes
Failure Type
Environmental Cracking-Related
Stress Subtype
Stress Corrosion Cracking
Additional Crack Ind
Yes
Collected Data Ind
Yes
Other Recent Year
2015
Has Hydrtst Conduc Before Ind
Yes
Hydrtst Most Rcnt Year
2010
Hydrtst Most Rcnt Pressure
1516
Direct Asmnt Conducted
No
Non Destructive Exam Ind
No
Preparer Name
S****** L******
Preparer Title
Ai Analyst
Preparer Email
S**************@m*********.com
Preparer Telephone
918-574-7327
Preparer Fax
918-574-7376
Prepared Date
2020-05-19 00:00:00
Authorizer Name
G**** R****
Authorizer Telephone
918-574-7165
Authorizer Title
Supervisor Integrity Management
Authorizer Email
G**********@m*********.com
Narrative
At 21:03:40 on 10/17/2016, a release occurred on the magellan ammonia pipeline, l.P. Valley to missouri river pipeline segment. At 21:14 magellan initiated a complete pipeline shutdown and isolation based on scada and the cpm (plm) system indications. While completing the pipeline shutdown and isolation, magellan received a telephonic notification from a third party regarding a vapor cloud and strong odor. Magellan declared a code red at 21:26:23, initiating a full emergency response. Field operations were notified and employees were dispatched to close manual valves. The psap (public access safety point) and nrc were notified and provided with an estimated release volume of ammonia. The initial nrc report number was 1161809. Additional nrc reports (1161815 and 116831) were made revising the estimated amounts released as additional information became available. Results of the national transportation safety board investigation indicate the probable cause of the pipeline rupture was corrosion fatigue cracks that grew and coalesced under disbonded polyethylene tape coating. Contributing to the location of the cracking was external loading that caused bending stress in the pipe in addition to the cyclic stresses in the pipe from the internal pressure of the ammonia transported. Decommissioning of the anhydrous ammonia pipeline system was successfully completed on april 10, 2020. Supplemental/final (5/19/2020): part c6, d8d, d8g, g5-1,3,4, h
| Report Received Date | 2016-11-16 00:00:00 |
|---|---|
| Iyear | 2016 |
| Report Number | 20160377 |
| Supplemental Number | 33776 |
| Report Type | Supplemental Final |
| Operator Id | 12105 PHMSA Enforcement |
| Name | Magellan Ammonia Pipeline, L.p. |
| Operator Street Address | One Williams Center, Md 28 |
| Operator City Name | Tulsa |
| Operator State Abbreviation | OK |
| Operator Postal Code | 74172 |
| Local Datetime | 2016-10-17 21:03:00 |
| Location Latitude | 41.90199 Google Maps OpenStreetMap |
| Location Longitude | -96.24944 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 | 2587 |
| Intentional Release Bbls | 0 |
| Recovered Bbls | 1064 |
| Fatality Ind | Yes |
| Num Emp Fatalities | 0 |
| Num Contr Fatalities | 0 |
| Num Er Fatalities | 0 |
| Num Worker Fatalities | 0 |
| Num Gp Fatalities | 1 |
| Fatal | 1 |
| Injury Ind | Yes |
| Num Emp Injuries | 0 |
| Num Contr Injuries | 0 |
| Num Er Injuries | 0 |
| Num Worker Injuries | 0 |
| Num Gp Injuries | 1 |
| Injure | 1 |
| Accident Identifier | Cpm Leak Detection System Or Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Calculations) |
| Incident Identified Datetime | 2016-10-17 21:14:00 |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2016-10-17 21:14:00 |
| Restart Datetime | 2016-11-15 15:30:00 |
| On Site Datetime | 2016-10-17 22:50:00 |
| Nrc Rpt Datetime | 2016-10-17 21:42:00 |
| Nrc Rpt Num | 1161809 NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Upstream Valve Type Ind | Remotely Controlled |
| Downstream Valve Type Ind | Remotely Controlled |
| Num Pub Evacuated | 49 |
| Pipe Fac Name | Valley To Whiting Anhydrous Ammonia Line |
| Segment Name | Line Number 502 |
| Onshore State Abbreviation | Ne |
| Onshore Postal Code | 68061 |
| Onshore City Name | Not Within A Municipality |
| Onshore County Name | Burt |
| Designated Location | Milepost/valve Station |
| Designated Name | 263.3178 |
| 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 Body |
| Pipe Diameter | 8 |
| Pipe Wall Thickness | 0.156 |
| Pipe Smys | 46000 |
| Pipe Specification | Api 5l-X46 |
| Pipe Seam Type | Erw - Low Frequency |
| Pipe Manufacturer | Lone Star Steel |
| Pipe Coating Type | Cold Applied Tape |
| Installation Year | 1968 |
| Manufactured Year | 1968 |
| Material Involved | Carbon Steel |
| Release Type | Rupture |
| Rupture Orient | Other |
| Rupture Details | Spiral |
| Rupture Width | 0.2 |
| Rupture Length | 11.9 |
| Wildlife Impact Ind | Yes |
| Terrestrial Impact Ind | Yes |
| Soil Contamination | Yes |
| Long Term Assessment | No |
| Remediation Ind | Yes |
| Soil Remed Ind | Yes |
| Vegetation Remed Ind | Yes |
| Water Contam Ind | No |
| Could Be Hca | No |
| Commodity Reached Hca | No |
| Est Cost Oper Paid | 61397 |
| Est Cost Gas Released | 139077 |
| Est Cost Prop Damage | 184500 |
| Est Cost Emergency | 2359186 |
| Est Cost Environmental | 0 |
| Est Cost Other | 68338 |
| Est Cost Other Details | Temporary Lodging, Food, Donations & Miscellaneous Expenses |
| Prpty | 2812498 |
| Accident Psig | 800 |
| Mop Psig | 1198 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 119935 |
| 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 | Yes |
| Scada Conf Ind | Yes |
| Cpm In Place Ind | Yes |
| Cpm Operating Ind | Yes |
| Cpm Functional Ind | Yes |
| Cpm Detection Ind | Yes |
| Cpm Conf Ind | Yes |
| Investigation Status | Yes, but the investigation of the control room and/or controller actions has not yet been completed by the operator (supplemental report required) |
| Employee Drug Test Ind | Yes |
| Contractor Drug Test Ind | No |
| Num Employees Tested | 1 |
| Num Employees Failed | 0 |
| Cause | Material Failure Of Pipe Or Weld |
| Cause Details | Environmental Cracking-Related |
| Metallurgical Ind | Yes |
| Failure Type | Environmental Cracking-Related |
| Stress Subtype | Stress Corrosion Cracking |
| Additional Crack Ind | Yes |
| Collected Data Ind | Yes |
| Other Recent Year | 2015 |
| Has Hydrtst Conduc Before Ind | Yes |
| Hydrtst Most Rcnt Year | 2010 |
| Hydrtst Most Rcnt Pressure | 1516 |
| Direct Asmnt Conducted | No |
| Non Destructive Exam Ind | No |
| Preparer Name | S****** L****** |
| Preparer Title | Ai Analyst |
| Preparer Email | S**************@m*********.com |
| Preparer Telephone | 918-574-7327 |
| Preparer Fax | 918-574-7376 |
| Prepared Date | 2020-05-19 00:00:00 |
| Authorizer Name | G**** R**** |
| Authorizer Telephone | 918-574-7165 |
| Authorizer Title | Supervisor Integrity Management |
| Authorizer Email | G**********@m*********.com |
| Narrative | At 21:03:40 on 10/17/2016, a release occurred on the magellan ammonia pipeline, l.P. Valley to missouri river pipeline segment. At 21:14 magellan initiated a complete pipeline shutdown and isolation based on scada and the cpm (plm) system indications. While completing the pipeline shutdown and isolation, magellan received a telephonic notification from a third party regarding a vapor cloud and strong odor. Magellan declared a code red at 21:26:23, initiating a full emergency response. Field operations were notified and employees were dispatched to close manual valves. The psap (public access safety point) and nrc were notified and provided with an estimated release volume of ammonia. The initial nrc report number was 1161809. Additional nrc reports (1161815 and 116831) were made revising the estimated amounts released as additional information became available. Results of the national transportation safety board investigation indicate the probable cause of the pipeline rupture was corrosion fatigue cracks that grew and coalesced under disbonded polyethylene tape coating. Contributing to the location of the cracking was external loading that caused bending stress in the pipe in addition to the cyclic stresses in the pipe from the internal pressure of the ammonia transported. Decommissioning of the anhydrous ammonia pipeline system was successfully completed on april 10, 2020. Supplemental/final (5/19/2020): part c6, d8d, d8g, g5-1,3,4, h |
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