Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2015-09-24 — OK
Operator
Oneok Ngl Pipeline, Llc
Cause
Corrosion 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)
$44,975
Incident datetime
2015-09-24 12:45
Report number
Location
OK
Narrative
On september 24th, 2015 oneok field personnel and contractors began excavation to locate and evaluate an anomaly identified by a recent internal inspection tool run. As the crew began the excavation an odor of hydrocarbons was detected but no lel's were detected by personal gas detectors. At that time, approximately 11:09 am, oneok decided to shut the line down and isolate the segment of pipe being excavated. After excavating approximately 20 ft. Of pipe, at approximately 12:45 pm, workers identified vapor leaking from a corrosion point on the pipe and immediately installed a temporary clamp to seal the leak. The isolated segment was then purged of hydrocarbons with nitrogen. The pipe section containing the leak was removed and replaced with new pretested pipe. After repairs were made the pipeline was returned to service at 10:00 am on 9/27/2015.
Detailed record list
Report Received Date
2015-10-22 00:00:00
Iyear
2015
Report Number
20150371
Supplemental Number
20837
Report Type
Original
Operator Id
32109
Name
Oneok Ngl Pipeline, Llc
Operator Street Address
100 West Fifth Street
Operator City Name
Tulsa
Operator State Abbreviation
OK
Operator Postal Code
74103
Local Datetime
2015-09-24 12:45:00
Location Latitude
32.43048
Location Longitude
-100.05672
Commodity Released Type
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Commodity Subtype
Lpg (Liquefied Petroleum Gas) / Ngl (Natural Gas Liquid)
Unintentional Release Bbls
6
Intentional Release Bbls
0
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
Incident Identified Datetime
2015-09-24 12:45:00
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2015-09-24 11:09:00
Restart Datetime
2015-09-27 10:00:00
On Site Datetime
2015-09-24 08:00:00
Nrc Rpt Datetime
2015-09-24 13:29:00
Nrc Rpt Num
1129296
Ignite Ind
No
Explode Ind
No
Upstream Valve Type Ind
Manual
Downstream Valve Type Ind
Manual
Num Pub Evacuated
0
Pipe Fac Name
Txl0365c #1-10" Cr 349 To Eastland Pipeline
Segment Name
West Texas Lpg Index 23365
Onshore State Abbreviation
Tx
Onshore Postal Code
79536
Onshore City Name
Not Within A Municipality
Onshore County Name
Taylor
Designated Location
Milepost/valve Station
Designated Name
Mile Post 84
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Exposed Due To Excavation
Depth Of Cover
18
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Pipe
Pipe Type
Pipe Body
Pipe Diameter
10.75
Pipe Wall Thickness
0.365
Pipe Smys
35000
Pipe Specification
Api
Pipe Seam Type
Seamless
Pipe Manufacturer
J & L
Pipe Coating Type
None
Installation Year
1945
Manufactured Year
1945
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Pinhole
Wildlife Impact Ind
No
Soil Contamination
Yes
Long Term Assessment
No
Remediation Ind
Yes
Soil Remed Ind
Yes
Water Contam Ind
No
Could Be Hca
No
Commodity Reached Hca
No
Est Cost Oper Paid
0
Est Cost Gas Released
155
Est Cost Prop Damage
44975
Est Cost Emergency
250
Est Cost Environmental
88909
Est Cost Other
0
Prpty
134289
Accident Psig
490
Mop Psig
988
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
43961
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
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
No contoller actions were involved.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Corrosion Failure
Cause Details
External Corrosion
Internal External
External Corrosion
Visual Exam Results
Localized Pitting
Galvanic Corrosion Ind
Yes
Field Exam Basis Ind
Yes
Underground Location
Yes
Under Cathodic Protection Ind
Yes
Cathodic Pro Start Year
1981
Shielding Evident
No
Cathodic Survey Type
Yes
Other Cp Survey Ind
Yes
Other Cp Survey Year
2013
Prior Damage
No
Collected Data Ind
Yes
Axial Magnetic Flx Lkg Ind
Yes
Geometry Deformation Ind
Yes
Axial Recent Year
2015
Geometry Recent Year
2015
Has Hydrtst Conduc Before Ind
Yes
Hydrtst Most Rcnt Year
1972
Hydrtst Most Rcnt Pressure
1250
Direct Asmnt Conducted
Yes, And An Investigative Dig Was Cunducted At The Point Of The Accident
Direct Asmnt At Pnt Accdnt Yr
2015
Non Destructive Exam Ind
No
Preparer Name
N*** J****
Preparer Title
Regulatory Compliance Coordinator
Preparer Email
N*********@o****.com
Preparer Telephone
580-395-6304
Preparer Fax
580-395-2933
Prepared Date
2015-10-22 00:00:00
Authorizer Name
N*** J****
Authorizer Telephone
580-395-6304
Authorizer Title
Regulatory Compliance Coordinator
Authorizer Email
N*********@o****.com
Narrative
On september 24th, 2015 oneok field personnel and contractors began excavation to locate and evaluate an anomaly identified by a recent internal inspection tool run. As the crew began the excavation an odor of hydrocarbons was detected but no lel's were detected by personal gas detectors. At that time, approximately 11:09 am, oneok decided to shut the line down and isolate the segment of pipe being excavated. After excavating approximately 20 ft. Of pipe, at approximately 12:45 pm, workers identified vapor leaking from a corrosion point on the pipe and immediately installed a temporary clamp to seal the leak. The isolated segment was then purged of hydrocarbons with nitrogen. The pipe section containing the leak was removed and replaced with new pretested pipe. After repairs were made the pipeline was returned to service at 10:00 am on 9/27/2015.
| Report Received Date | 2015-10-22 00:00:00 |
|---|---|
| Iyear | 2015 |
| Report Number | 20150371 |
| Supplemental Number | 20837 |
| Report Type | Original |
| Operator Id | 32109 PHMSA Enforcement |
| Name | Oneok Ngl Pipeline, Llc |
| Operator Street Address | 100 West Fifth Street |
| Operator City Name | Tulsa |
| Operator State Abbreviation | OK |
| Operator Postal Code | 74103 |
| Local Datetime | 2015-09-24 12:45:00 |
| Location Latitude | 32.43048 Google Maps OpenStreetMap |
| Location Longitude | -100.05672 Google Maps OpenStreetMap |
| Commodity Released Type | Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions |
| Commodity Subtype | Lpg (Liquefied Petroleum Gas) / Ngl (Natural Gas Liquid) |
| Unintentional Release Bbls | 6 |
| Intentional Release Bbls | 0 |
| Recovered Bbls | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| Incident Identified Datetime | 2015-09-24 12:45:00 |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2015-09-24 11:09:00 |
| Restart Datetime | 2015-09-27 10:00:00 |
| On Site Datetime | 2015-09-24 08:00:00 |
| Nrc Rpt Datetime | 2015-09-24 13:29:00 |
| Nrc Rpt Num | 1129296 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 | Txl0365c #1-10" Cr 349 To Eastland Pipeline |
| Segment Name | West Texas Lpg Index 23365 |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 79536 |
| Onshore City Name | Not Within A Municipality |
| Onshore County Name | Taylor |
| Designated Location | Milepost/valve Station |
| Designated Name | Mile Post 84 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Exposed Due To Excavation |
| Depth Of Cover | 18 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Pipe Diameter | 10.75 |
| Pipe Wall Thickness | 0.365 |
| Pipe Smys | 35000 |
| Pipe Specification | Api |
| Pipe Seam Type | Seamless |
| Pipe Manufacturer | J & L |
| Pipe Coating Type | None |
| Installation Year | 1945 |
| Manufactured Year | 1945 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Pinhole |
| Wildlife Impact Ind | No |
| Soil Contamination | Yes |
| Long Term Assessment | No |
| Remediation Ind | Yes |
| Soil Remed Ind | Yes |
| Water Contam Ind | No |
| Could Be Hca | No |
| Commodity Reached Hca | No |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 155 |
| Est Cost Prop Damage | 44975 |
| Est Cost Emergency | 250 |
| Est Cost Environmental | 88909 |
| Est Cost Other | 0 |
| Prpty | 134289 |
| Accident Psig | 490 |
| Mop Psig | 988 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 43961 |
| 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 | 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 | No contoller actions were involved. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Corrosion Failure |
| Cause Details | External Corrosion |
| Internal External | External Corrosion |
| Visual Exam Results | Localized Pitting |
| Galvanic Corrosion Ind | Yes |
| Field Exam Basis Ind | Yes |
| Underground Location | Yes |
| Under Cathodic Protection Ind | Yes |
| Cathodic Pro Start Year | 1981 |
| Shielding Evident | No |
| Cathodic Survey Type | Yes |
| Other Cp Survey Ind | Yes |
| Other Cp Survey Year | 2013 |
| Prior Damage | No |
| Collected Data Ind | Yes |
| Axial Magnetic Flx Lkg Ind | Yes |
| Geometry Deformation Ind | Yes |
| Axial Recent Year | 2015 |
| Geometry Recent Year | 2015 |
| Has Hydrtst Conduc Before Ind | Yes |
| Hydrtst Most Rcnt Year | 1972 |
| Hydrtst Most Rcnt Pressure | 1250 |
| Direct Asmnt Conducted | Yes, And An Investigative Dig Was Cunducted At The Point Of The Accident |
| Direct Asmnt At Pnt Accdnt Yr | 2015 |
| Non Destructive Exam Ind | No |
| Preparer Name | N*** J**** |
| Preparer Title | Regulatory Compliance Coordinator |
| Preparer Email | N*********@o****.com |
| Preparer Telephone | 580-395-6304 |
| Preparer Fax | 580-395-2933 |
| Prepared Date | 2015-10-22 00:00:00 |
| Authorizer Name | N*** J**** |
| Authorizer Telephone | 580-395-6304 |
| Authorizer Title | Regulatory Compliance Coordinator |
| Authorizer Email | N*********@o****.com |
| Narrative | On september 24th, 2015 oneok field personnel and contractors began excavation to locate and evaluate an anomaly identified by a recent internal inspection tool run. As the crew began the excavation an odor of hydrocarbons was detected but no lel's were detected by personal gas detectors. At that time, approximately 11:09 am, oneok decided to shut the line down and isolate the segment of pipe being excavated. After excavating approximately 20 ft. Of pipe, at approximately 12:45 pm, workers identified vapor leaking from a corrosion point on the pipe and immediately installed a temporary clamp to seal the leak. The isolated segment was then purged of hydrocarbons with nitrogen. The pipe section containing the leak was removed and replaced with new pretested pipe. After repairs were made the pipeline was returned to service at 10:00 am on 9/27/2015. |
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