Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2019-07-01 — OK
Operator
Magellan Ammonia Pipeline, L.p.
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)
$54,500
Incident datetime
2019-07-01 08:36
Report number
Location
OK
Narrative
At 8:36am on july 1, 2019, location operations personnel was notified by aerial patrol of an area of dead vegetation near mp 225.3 on the nh3 garner lateral 6" line segment. Field personnel were dispatched to the site to begin investigations. Operations control was notified and pipeline shutdown procedures were initiated. At the time of the event, the pipeline was not running. Investigative event procedures were implemented and additional resources responded to the site. Manual mainline isolation valves were closed to isolate the release segment. Heavy rains and lightning on july 1 and july 2 affected site conditions and the ability to safely excavate and perform emergency response activities. No vapor clouds or release to the air were detected. Air monitoring was conducted after the rain event and throughout the response and repair activities. Air monitor readings were zero with no detectable odor. The release location was fully excavated on july 3. The release originated from the fillet weld on the nut of a plidco repair sleeve that was installed in 2012. Apparently during the 2012 repair, the fillet weld around the nut was incomplete. The fillet welds were inspected during the 2012 repair with no findings noted. A weld repair was performed on the defective fillet weld to repair the release. The weld repair was mag particle tested and the line was returned to service. 48-hr nrc update: 1250879 7/3/2019 13:54 supplemental/final (10/29/2019): updated part a 9 and 11 volume released/recovered supplemental/final (12/19/2019): updated part g7
Detailed record list
Report Received Date
2019-07-30 00:00:00
Iyear
2019
Report Number
20190236
Supplemental Number
33110
Report Type
Supplemental 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
2019-07-01 08:36:00
Location Latitude
43.93145
Location Longitude
-94.112759
Commodity Released Type
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Commodity Subtype
Anhydrous Ammonia
Unintentional Release Bbls
7
Intentional Release Bbls
0
Recovered Bbls
7
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Air Patrol
Operator Type
Contractor Working For The Operator
Incident Identified Datetime
2019-07-01 08:36:00
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2019-07-01 11:28:00
Restart Datetime
2019-07-03 15:56:00
On Site Datetime
2019-07-01 10:54:00
Nrc Rpt Datetime
2019-07-01 11:54:00
Nrc Rpt Num
1250655
Ignite Ind
No
Explode Ind
No
Upstream Valve Type Ind
Manual
Downstream Valve Type Ind
Manual
Num Pub Evacuated
0
Pipe Fac Name
Garner Lateral
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
36
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Repair Sleeve Or Clamp
Installation Year
2012
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Other
Leak Type Other
Welded Nut On Plidco Sleeve
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
20000
Est Cost Gas Released
292
Est Cost Prop Damage
54500
Est Cost Emergency
90762
Est Cost Environmental
0
Est Cost Other
0
Prpty
165554
Accident Psig
262
Mop Psig
1152
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
47520
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
Low rate release on a shut in line
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Incorrect Operation
Cause Details
Equipment Not Installed Properly
Operation Type
Equipment Not Installed Properly
Related Other Ind
Yes
Operation Related Details
Incomplete Welding Around The Bolt Which Was Not Identified By Nde
Category Type
Other Maintenance
Operator Qualification Ind
Yes
Qualified Individuals
Yes, They Were Qualified For The Task(S)
Preparer Name
S****** L******
Preparer Title
Ai Analyst
Preparer Email
S**************@m*********.com
Preparer Telephone
918-574-7327
Preparer Fax
918574-7376
Prepared Date
2019-12-19 00:00:00
Authorizer Name
S**** H******
Authorizer Telephone
918-574-7173
Authorizer Title
Supervisor Integrity Management
Authorizer Email
S************@m*********.com
Narrative
At 8:36am on july 1, 2019, location operations personnel was notified by aerial patrol of an area of dead vegetation near mp 225.3 on the nh3 garner lateral 6" line segment. Field personnel were dispatched to the site to begin investigations. Operations control was notified and pipeline shutdown procedures were initiated. At the time of the event, the pipeline was not running. Investigative event procedures were implemented and additional resources responded to the site. Manual mainline isolation valves were closed to isolate the release segment. Heavy rains and lightning on july 1 and july 2 affected site conditions and the ability to safely excavate and perform emergency response activities. No vapor clouds or release to the air were detected. Air monitoring was conducted after the rain event and throughout the response and repair activities. Air monitor readings were zero with no detectable odor. The release location was fully excavated on july 3. The release originated from the fillet weld on the nut of a plidco repair sleeve that was installed in 2012. Apparently during the 2012 repair, the fillet weld around the nut was incomplete. The fillet welds were inspected during the 2012 repair with no findings noted. A weld repair was performed on the defective fillet weld to repair the release. The weld repair was mag particle tested and the line was returned to service. 48-hr nrc update: 1250879 7/3/2019 13:54 supplemental/final (10/29/2019): updated part a 9 and 11 volume released/recovered supplemental/final (12/19/2019): updated part g7
| Report Received Date | 2019-07-30 00:00:00 |
|---|---|
| Iyear | 2019 |
| Report Number | 20190236 |
| Supplemental Number | 33110 |
| Report Type | Supplemental 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 | 2019-07-01 08:36:00 |
| Location Latitude | 43.93145 Google Maps OpenStreetMap |
| Location Longitude | -94.112759 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 | 7 |
| Intentional Release Bbls | 0 |
| Recovered Bbls | 7 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Air Patrol |
| Operator Type | Contractor Working For The Operator |
| Incident Identified Datetime | 2019-07-01 08:36:00 |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2019-07-01 11:28:00 |
| Restart Datetime | 2019-07-03 15:56:00 |
| On Site Datetime | 2019-07-01 10:54:00 |
| Nrc Rpt Datetime | 2019-07-01 11:54:00 |
| Nrc Rpt Num | 1250655 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 | Garner Lateral |
| 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 | 36 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Repair Sleeve Or Clamp |
| Installation Year | 2012 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Other |
| Leak Type Other | Welded Nut On Plidco Sleeve |
| 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 | 20000 |
| Est Cost Gas Released | 292 |
| Est Cost Prop Damage | 54500 |
| Est Cost Emergency | 90762 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 165554 |
| Accident Psig | 262 |
| Mop Psig | 1152 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 47520 |
| 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 | Low rate release on a shut in line |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Incorrect Operation |
| Cause Details | Equipment Not Installed Properly |
| Operation Type | Equipment Not Installed Properly |
| Related Other Ind | Yes |
| Operation Related Details | Incomplete Welding Around The Bolt Which Was Not Identified By Nde |
| Category Type | Other Maintenance |
| Operator Qualification Ind | Yes |
| Qualified Individuals | Yes, They Were Qualified For The Task(S) |
| Preparer Name | S****** L****** |
| Preparer Title | Ai Analyst |
| Preparer Email | S**************@m*********.com |
| Preparer Telephone | 918-574-7327 |
| Preparer Fax | 918574-7376 |
| Prepared Date | 2019-12-19 00:00:00 |
| Authorizer Name | S**** H****** |
| Authorizer Telephone | 918-574-7173 |
| Authorizer Title | Supervisor Integrity Management |
| Authorizer Email | S************@m*********.com |
| Narrative | At 8:36am on july 1, 2019, location operations personnel was notified by aerial patrol of an area of dead vegetation near mp 225.3 on the nh3 garner lateral 6" line segment. Field personnel were dispatched to the site to begin investigations. Operations control was notified and pipeline shutdown procedures were initiated. At the time of the event, the pipeline was not running. Investigative event procedures were implemented and additional resources responded to the site. Manual mainline isolation valves were closed to isolate the release segment. Heavy rains and lightning on july 1 and july 2 affected site conditions and the ability to safely excavate and perform emergency response activities. No vapor clouds or release to the air were detected. Air monitoring was conducted after the rain event and throughout the response and repair activities. Air monitor readings were zero with no detectable odor. The release location was fully excavated on july 3. The release originated from the fillet weld on the nut of a plidco repair sleeve that was installed in 2012. Apparently during the 2012 repair, the fillet weld around the nut was incomplete. The fillet welds were inspected during the 2012 repair with no findings noted. A weld repair was performed on the defective fillet weld to repair the release. The weld repair was mag particle tested and the line was returned to service. 48-hr nrc update: 1250879 7/3/2019 13:54 supplemental/final (10/29/2019): updated part a 9 and 11 volume released/recovered supplemental/final (12/19/2019): updated part g7 |
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