Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2013-07-01 — OK
Operator
Magellan Ammonia Pipeline, L.p.
Cause
Equipment Failure
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)
$108,000
Incident datetime
2013-07-01 17:20
Report number
Location
OK
Narrative
Aerial patrol pilot identified a potential dead spot of vegetation and notified magellan personnel who investigated and determined a release had occurred. The site was excavated and a buried check valve was found to be leaking. The line was isolated and the valve lid was removed, whereupon a damaged o-ring gasket was found to be the source of the release. A new o-ring gasket was installed and the head bolts were torqued to manufacturer's specifications. Approximately 100 cubic yards of impacted soil was remediated in accordance with state and company standards.
Detailed record list
Report Received Date
2013-07-30 00:00:00
Iyear
2013
Report Number
20130259
Supplemental Number
19214
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
2013-07-01 17:20:00
Location Latitude
42.79375
Location Longitude
-94.40176
Commodity Released Type
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Commodity Subtype
Anhydrous Ammonia
Unintentional Release Bbls
5
Intentional Release Bbls
5.95
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Air Patrol
Operator Type
Operator Employee
Incident Identified Datetime
2013-07-01 17:20:00
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Shutdown Due Accident Ind
No
Shutdown Explain
Line Was Already Down Due To A Pinhole Release At Mp 107 Discovered Earlier
On Site Datetime
2013-07-01 19:20:00
Nrc Rpt Datetime
2013-07-01 17:58:00
Nrc Rpt Num
1052346
Ignite Ind
No
Explode Ind
No
Upstream Valve Type Ind
Remotely Controlled
Downstream Valve Type Ind
Remotely Controlled
Pipe Fac Name
Pocahontas To Luverne 6-Inch Line
Segment Name
Line Segment Id 504
Onshore State Abbreviation
Ia
Onshore Postal Code
50520
Onshore City Name
Bradgate
Onshore County Name
Humboldt
Designated Location
Milepost/valve Station
Designated Name
104.7
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
Valve
Valve Type
Mainline
Valve Mainline Type
Check
Valve Manufacturer
Wheatley
Installation Year
2011
Manufactured Year
2011
Material Involved
Material Other Than Carbon Steel
Material Details
Neoprene
Release Type
Leak
Leak Type
Seal Or Packing
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
2500
Est Cost Gas Released
403
Est Cost Prop Damage
108000
Est Cost Emergency
43000
Est Cost Environmental
35000
Est Cost Other
0
Prpty
188903
Accident Psig
430
Mop Psig
1440
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
39117
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 release was the result of a malfunction in a check valve. It was subsequently determined that neither the control room nor the controller on duty caused or contributed to the release.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Malfunction Of Control/relief Equipment
Eq Failure Type
Malfunction Of Control/relief Equipment
Check Valve Ind
Yes
Eq Additional Other Ind
Yes
Eq Additional Other Details
O-Ring Gasket Was Damaged From Undetermined Causes
Preparer Name
K****** L* L*******
Preparer Title
Sr. Compliance Coordinator
Preparer Email
K***********@m*********.com
Preparer Telephone
918-574-7315
Preparer Fax
918-574-7377
Prepared Date
2014-04-03 00:00:00
Authorizer Name
K****** L* L*******
Authorizer Telephone
918-574-7315
Authorizer Title
Sr. Compliance Coordinator
Authorizer Email
K***********@m*********.com
Narrative
Aerial patrol pilot identified a potential dead spot of vegetation and notified magellan personnel who investigated and determined a release had occurred. The site was excavated and a buried check valve was found to be leaking. The line was isolated and the valve lid was removed, whereupon a damaged o-ring gasket was found to be the source of the release. A new o-ring gasket was installed and the head bolts were torqued to manufacturer's specifications. Approximately 100 cubic yards of impacted soil was remediated in accordance with state and company standards.
| Report Received Date | 2013-07-30 00:00:00 |
|---|---|
| Iyear | 2013 |
| Report Number | 20130259 |
| Supplemental Number | 19214 |
| 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 | 2013-07-01 17:20:00 |
| Location Latitude | 42.79375 Google Maps OpenStreetMap |
| Location Longitude | -94.40176 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 | 5 |
| Intentional Release Bbls | 5.95 |
| Recovered Bbls | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Air Patrol |
| Operator Type | Operator Employee |
| Incident Identified Datetime | 2013-07-01 17:20:00 |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | Line Was Already Down Due To A Pinhole Release At Mp 107 Discovered Earlier |
| On Site Datetime | 2013-07-01 19:20:00 |
| Nrc Rpt Datetime | 2013-07-01 17:58:00 |
| Nrc Rpt Num | 1052346 NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Upstream Valve Type Ind | Remotely Controlled |
| Downstream Valve Type Ind | Remotely Controlled |
| Pipe Fac Name | Pocahontas To Luverne 6-Inch Line |
| Segment Name | Line Segment Id 504 |
| Onshore State Abbreviation | Ia |
| Onshore Postal Code | 50520 |
| Onshore City Name | Bradgate |
| Onshore County Name | Humboldt |
| Designated Location | Milepost/valve Station |
| Designated Name | 104.7 |
| 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 | Valve |
| Valve Type | Mainline |
| Valve Mainline Type | Check |
| Valve Manufacturer | Wheatley |
| Installation Year | 2011 |
| Manufactured Year | 2011 |
| Material Involved | Material Other Than Carbon Steel |
| Material Details | Neoprene |
| Release Type | Leak |
| Leak Type | Seal Or Packing |
| 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 | 2500 |
| Est Cost Gas Released | 403 |
| Est Cost Prop Damage | 108000 |
| Est Cost Emergency | 43000 |
| Est Cost Environmental | 35000 |
| Est Cost Other | 0 |
| Prpty | 188903 |
| Accident Psig | 430 |
| Mop Psig | 1440 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 39117 |
| 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 release was the result of a malfunction in a check valve. It was subsequently determined that neither the control room nor the controller on duty caused or contributed to the release. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Malfunction Of Control/relief Equipment |
| Eq Failure Type | Malfunction Of Control/relief Equipment |
| Check Valve Ind | Yes |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | O-Ring Gasket Was Damaged From Undetermined Causes |
| Preparer Name | K****** L* L******* |
| Preparer Title | Sr. Compliance Coordinator |
| Preparer Email | K***********@m*********.com |
| Preparer Telephone | 918-574-7315 |
| Preparer Fax | 918-574-7377 |
| Prepared Date | 2014-04-03 00:00:00 |
| Authorizer Name | K****** L* L******* |
| Authorizer Telephone | 918-574-7315 |
| Authorizer Title | Sr. Compliance Coordinator |
| Authorizer Email | K***********@m*********.com |
| Narrative | Aerial patrol pilot identified a potential dead spot of vegetation and notified magellan personnel who investigated and determined a release had occurred. The site was excavated and a buried check valve was found to be leaking. The line was isolated and the valve lid was removed, whereupon a damaged o-ring gasket was found to be the source of the release. A new o-ring gasket was installed and the head bolts were torqued to manufacturer's specifications. Approximately 100 cubic yards of impacted soil was remediated in accordance with state and company standards. |
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