Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2020-06-08 — KS
Operator
Nustar Pipeline Operating Partnership 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)
$130,822
Incident datetime
2020-06-08 16:30
Report number
Location
KS
Narrative
Nustar confirmed the release at 16:30 on june 8, 2020. The pipeline was shut down at 17:15 on june 8, 2020. The repairs included putting a clamp around the pinhole at 20:18 on june 13, 2020. The pipeline was restarted at 20:18 on june 13, 2020. 48-hour nrc update #1279309 supplemental: the leak/release occurred at a location on the pipe that had a lack of fusion area at the erw seam bond line. During operation, outer surface pitting had occurred in the same general area. The leak occurred at the lack of fusion line where there were also several corrosion pits on the external surface of the pipe. This irregularly shaped pit was coincident with the bond line and the lack of fusion area, which acted as a crevice. Crevices are known to accelerate corrosion and the pitting widened the lack of fusion, eventually resulting in a connection between the od and id. The pitting corrosion is typical of what would occur in submerged service where the coating was either not perfect when manufactured or was damaged in usage. There were two strap marks straddling the pitted area that may have disturbed the coating locally. The external surface pitting area was generally in line with the erw weld seam at the 6:30 o'clock location (near the bottom). The coincidence of the lack of fusion (lof) and the corrosion at that location created a through hole 0.070-inch long and 0.040-inch wide on that section of pipe.
Detailed record list
Report Received Date
2020-07-06 00:00:00
Iyear
2020
Report Number
20200195
Supplemental Number
34652
Report Type
Supplemental Final
Operator Id
10012
Name
Nustar Pipeline Operating Partnership L.p.
Operator Street Address
7340 W. 21st Street N., Suite 200
Operator City Name
Wichita
Operator State Abbreviation
KS
Operator Postal Code
67205
Local Datetime
2020-06-08 16:30:00
Location Latitude
32.846528
Location Longitude
-92.557658
Commodity Released Type
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Commodity Subtype
Anhydrous Ammonia
Unintentional Release Bbls
0.5
Intentional Release Bbls
0
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Notification From Public
Incident Identified Datetime
2020-06-08 16:30:00
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2020-06-08 17:15:00
Restart Datetime
2020-06-13 20:18:00
On Site Datetime
2020-06-08 16:30:00
Nrc Rpt Datetime
2020-06-08 17:37:00
Nrc Rpt Num
1279145
Ignite Ind
No
Explode Ind
No
Upstream Valve Type Ind
Manual
Downstream Valve Type Ind
Manual
Num Pub Evacuated
0
Pipe Fac Name
Ammonia Mainline
Segment Name
Chatam To Hampton 10-Inch
Onshore State Abbreviation
La
Onshore Postal Code
71222
Onshore City Name
Not Within A Municipality
Onshore County Name
Union
Designated Location
Survey Station No.
Designated Name
35.39 Mile
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
Pipe
Pipe Type
Pipe Body
Pipe Diameter
10
Pipe Wall Thickness
0.25
Pipe Smys
42000
Pipe Specification
Api 5lx-X42
Pipe Seam Type
Erw - High Frequency
Pipe Manufacturer
Hoesch-Thyssen
Pipe Coating Type
Other
Pipe Coating Details
Poly Tape
Installation Year
1970
Manufactured Year
1970
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Pinhole
Wildlife Impact Ind
Yes
Fish Aquatic Impact Ind
Yes
Soil Contamination
Yes
Long Term Assessment
No
Remediation Ind
No
Water Contam Ind
Yes
Surface Contam Ind
Yes
Amount Released
0.5
Rel Water Name
Corney Bayou
Could Be Hca
Yes
Commodity Reached Hca
No
Est Cost Oper Paid
0
Est Cost Gas Released
0
Est Cost Prop Damage
130822
Est Cost Emergency
124000
Est Cost Environmental
0
Est Cost Other
0
Prpty
254822
Accident Psig
210
Mop Psig
1340
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
92241
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
Yes, specify investigation result(s): (select all that apply)
Invest No Control Room Ind
Yes
Invest No Controller Ind
Yes
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)
Metallurgical Ind
Yes
Failure Type
Original Manufacturing-Related (Not Girth Weld Or Other Welds Formed In The Field)
Other Factor
Yes
Other Factor Details
Occurred At Lack Of Fusion Line-Several Corrosion Pits On External Of Pipe
Additional Lack Fusion Ind
Yes
Collected Data Ind
Yes
Other Recent Year
2020
Has Hydrtst Conduc Before Ind
No
Direct Asmnt Conducted
Yes, But The Point Of The Accident Was Not Identified As A Dig Site
Direct Asmnt Pnt Not Idntf Yr
2020
Non Destructive Exam Ind
No
Preparer Name
D***** J T******
Preparer Title
Director-Hse
Preparer Email
D**********@n***********.com
Preparer Telephone
316-721-7056
Prepared Date
2020-12-23 00:00:00
Authorizer Name
B*** F******
Authorizer Telephone
316-721-7066
Authorizer Title
General Manager
Authorizer Email
B***********@n***********.com
Narrative
Nustar confirmed the release at 16:30 on june 8, 2020. The pipeline was shut down at 17:15 on june 8, 2020. The repairs included putting a clamp around the pinhole at 20:18 on june 13, 2020. The pipeline was restarted at 20:18 on june 13, 2020. 48-hour nrc update #1279309 supplemental: the leak/release occurred at a location on the pipe that had a lack of fusion area at the erw seam bond line. During operation, outer surface pitting had occurred in the same general area. The leak occurred at the lack of fusion line where there were also several corrosion pits on the external surface of the pipe. This irregularly shaped pit was coincident with the bond line and the lack of fusion area, which acted as a crevice. Crevices are known to accelerate corrosion and the pitting widened the lack of fusion, eventually resulting in a connection between the od and id. The pitting corrosion is typical of what would occur in submerged service where the coating was either not perfect when manufactured or was damaged in usage. There were two strap marks straddling the pitted area that may have disturbed the coating locally. The external surface pitting area was generally in line with the erw weld seam at the 6:30 o'clock location (near the bottom). The coincidence of the lack of fusion (lof) and the corrosion at that location created a through hole 0.070-inch long and 0.040-inch wide on that section of pipe.
| Report Received Date | 2020-07-06 00:00:00 |
|---|---|
| Iyear | 2020 |
| Report Number | 20200195 |
| Supplemental Number | 34652 |
| Report Type | Supplemental Final |
| Operator Id | 10012 PHMSA Enforcement |
| Name | Nustar Pipeline Operating Partnership L.p. |
| Operator Street Address | 7340 W. 21st Street N., Suite 200 |
| Operator City Name | Wichita |
| Operator State Abbreviation | KS |
| Operator Postal Code | 67205 |
| Local Datetime | 2020-06-08 16:30:00 |
| Location Latitude | 32.846528 Google Maps OpenStreetMap |
| Location Longitude | -92.557658 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 | 0.5 |
| Intentional Release Bbls | 0 |
| Recovered Bbls | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Notification From Public |
| Incident Identified Datetime | 2020-06-08 16:30:00 |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2020-06-08 17:15:00 |
| Restart Datetime | 2020-06-13 20:18:00 |
| On Site Datetime | 2020-06-08 16:30:00 |
| Nrc Rpt Datetime | 2020-06-08 17:37:00 |
| Nrc Rpt Num | 1279145 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 | Ammonia Mainline |
| Segment Name | Chatam To Hampton 10-Inch |
| Onshore State Abbreviation | La |
| Onshore Postal Code | 71222 |
| Onshore City Name | Not Within A Municipality |
| Onshore County Name | Union |
| Designated Location | Survey Station No. |
| Designated Name | 35.39 Mile |
| 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 | Pipe |
| Pipe Type | Pipe Body |
| Pipe Diameter | 10 |
| Pipe Wall Thickness | 0.25 |
| Pipe Smys | 42000 |
| Pipe Specification | Api 5lx-X42 |
| Pipe Seam Type | Erw - High Frequency |
| Pipe Manufacturer | Hoesch-Thyssen |
| Pipe Coating Type | Other |
| Pipe Coating Details | Poly Tape |
| Installation Year | 1970 |
| Manufactured Year | 1970 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Pinhole |
| Wildlife Impact Ind | Yes |
| Fish Aquatic Impact Ind | Yes |
| Soil Contamination | Yes |
| Long Term Assessment | No |
| Remediation Ind | No |
| Water Contam Ind | Yes |
| Surface Contam Ind | Yes |
| Amount Released | 0.5 |
| Rel Water Name | Corney Bayou |
| Could Be Hca | Yes |
| Commodity Reached Hca | No |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 0 |
| Est Cost Prop Damage | 130822 |
| Est Cost Emergency | 124000 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 254822 |
| Accident Psig | 210 |
| Mop Psig | 1340 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 92241 |
| 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 | Yes, specify investigation result(s): (select all that apply) |
| Invest No Control Room Ind | Yes |
| Invest No Controller Ind | Yes |
| 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) |
| Metallurgical Ind | Yes |
| Failure Type | Original Manufacturing-Related (Not Girth Weld Or Other Welds Formed In The Field) |
| Other Factor | Yes |
| Other Factor Details | Occurred At Lack Of Fusion Line-Several Corrosion Pits On External Of Pipe |
| Additional Lack Fusion Ind | Yes |
| Collected Data Ind | Yes |
| Other Recent Year | 2020 |
| Has Hydrtst Conduc Before Ind | No |
| Direct Asmnt Conducted | Yes, But The Point Of The Accident Was Not Identified As A Dig Site |
| Direct Asmnt Pnt Not Idntf Yr | 2020 |
| Non Destructive Exam Ind | No |
| Preparer Name | D***** J T****** |
| Preparer Title | Director-Hse |
| Preparer Email | D**********@n***********.com |
| Preparer Telephone | 316-721-7056 |
| Prepared Date | 2020-12-23 00:00:00 |
| Authorizer Name | B*** F****** |
| Authorizer Telephone | 316-721-7066 |
| Authorizer Title | General Manager |
| Authorizer Email | B***********@n***********.com |
| Narrative | Nustar confirmed the release at 16:30 on june 8, 2020. The pipeline was shut down at 17:15 on june 8, 2020. The repairs included putting a clamp around the pinhole at 20:18 on june 13, 2020. The pipeline was restarted at 20:18 on june 13, 2020. 48-hour nrc update #1279309 supplemental: the leak/release occurred at a location on the pipe that had a lack of fusion area at the erw seam bond line. During operation, outer surface pitting had occurred in the same general area. The leak occurred at the lack of fusion line where there were also several corrosion pits on the external surface of the pipe. This irregularly shaped pit was coincident with the bond line and the lack of fusion area, which acted as a crevice. Crevices are known to accelerate corrosion and the pitting widened the lack of fusion, eventually resulting in a connection between the od and id. The pitting corrosion is typical of what would occur in submerged service where the coating was either not perfect when manufactured or was damaged in usage. There were two strap marks straddling the pitted area that may have disturbed the coating locally. The external surface pitting area was generally in line with the erw weld seam at the 6:30 o'clock location (near the bottom). The coincidence of the lack of fusion (lof) and the corrosion at that location created a through hole 0.070-inch long and 0.040-inch wide on that section of pipe. |
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