Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2015-08-21 — 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)
$55,000
Incident datetime
2015-08-21 13:14
Report number
Location
OK
Narrative
On august 21, 2015 oneok contractor sandblasting the #1 10" pipeline out of coahoma storage to verify an anomoly indicated by ili data, noticed hydrocarbon vapors coming from the pipe at the 12 o'clock position. Prior to the work, the excavation had been inspected and was clear of hydrocarbons. The oneok inspector confirmed hydrocarbon release on the pipeline at 13:18 hrs., inspector contacted pipeline control center and the pipeline supervisor. The pipeline was shutdown at 13:20 hrs. On 8/21/2015. Work to install a temporary clamp bgan and the release was contained by 15:45 hrs.. Oneok then displaced the hydrocarbons in the pipeline with nitrogen and 2 joints (approximately 80 ft.) of pipe were replaced at the location. Upon completion of the pipe replacement, the pipeline was returned to normal operation at approximately 11:35 hrs. On 8/23/2015. Corrected pipe specs to API 5l - 3/08/2016.
Detailed record list
Report Received Date
2015-09-18 00:00:00
Iyear
2015
Report Number
20150334
Supplemental Number
21206
Report Type
Supplemental
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
2015-08-21 13:14:00
Location Latitude
32.285819
Location Longitude
-101.168947
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
0.07
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
2015-08-21 13:14:00
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2015-08-21 13:20:00
Restart Datetime
2015-08-23 11:35:00
On Site Datetime
2015-08-21 13:14:00
Nrc Rpt Datetime
2015-08-21 14:47:00
Nrc Rpt Num
1126316
Ignite Ind
No
Explode Ind
No
Upstream Valve Type Ind
Manual
Downstream Valve Type Ind
Manual
Num Pub Evacuated
0
Pipe Fac Name
Oneok Txl0415c Coahoma #1 10"
Segment Name
West Texas Lpg Index 23415
Onshore State Abbreviation
Tx
Onshore Postal Code
79511
Onshore City Name
Not Within A Municipality
Onshore County Name
Mitchell
Designated Location
Milepost/valve Station
Designated Name
8009+17
Federal
No
Location Type
Totally Contained On Operator-Controlled Property
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 5l
Pipe Seam Type
Seamless
Pipe Manufacturer
National Steel
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
No
Long Term Assessment
No
Remediation Ind
No
Water Contam Ind
No
Could Be Hca
No
Commodity Reached Hca
No
Est Cost Oper Paid
0
Est Cost Gas Released
3
Est Cost Prop Damage
55000
Est Cost Emergency
0
Est Cost Environmental
0
Est Cost Other
0
Prpty
55003
Accident Psig
635
Mop Psig
1000
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
50017
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
2016-03-08 00:00:00
Authorizer Name
N*** J****
Authorizer Telephone
580-395-6304
Authorizer Title
Regulatory Compliance Coordinator
Authorizer Email
N*********@o****.com
Narrative
On august 21, 2015 oneok contractor sandblasting the #1 10" pipeline out of coahoma storage to verify an anomoly indicated by ili data, noticed hydrocarbon vapors coming from the pipe at the 12 o'clock position. Prior to the work, the excavation had been inspected and was clear of hydrocarbons. The oneok inspector confirmed hydrocarbon release on the pipeline at 13:18 hrs., inspector contacted pipeline control center and the pipeline supervisor. The pipeline was shutdown at 13:20 hrs. On 8/21/2015. Work to install a temporary clamp bgan and the release was contained by 15:45 hrs.. Oneok then displaced the hydrocarbons in the pipeline with nitrogen and 2 joints (approximately 80 ft.) of pipe were replaced at the location. Upon completion of the pipe replacement, the pipeline was returned to normal operation at approximately 11:35 hrs. On 8/23/2015. Corrected pipe specs to API 5l - 3/08/2016.
| Report Received Date | 2015-09-18 00:00:00 |
|---|---|
| Iyear | 2015 |
| Report Number | 20150334 |
| Supplemental Number | 21206 |
| Report Type | Supplemental |
| 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 | 2015-08-21 13:14:00 |
| Location Latitude | 32.285819 Google Maps OpenStreetMap |
| Location Longitude | -101.168947 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 | 0.07 |
| 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 | 2015-08-21 13:14:00 |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2015-08-21 13:20:00 |
| Restart Datetime | 2015-08-23 11:35:00 |
| On Site Datetime | 2015-08-21 13:14:00 |
| Nrc Rpt Datetime | 2015-08-21 14:47:00 |
| Nrc Rpt Num | 1126316 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 | Oneok Txl0415c Coahoma #1 10" |
| Segment Name | West Texas Lpg Index 23415 |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 79511 |
| Onshore City Name | Not Within A Municipality |
| Onshore County Name | Mitchell |
| Designated Location | Milepost/valve Station |
| Designated Name | 8009+17 |
| Federal | No |
| Location Type | Totally Contained On Operator-Controlled Property |
| 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 5l |
| Pipe Seam Type | Seamless |
| Pipe Manufacturer | National Steel |
| 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 | No |
| Long Term Assessment | No |
| Remediation Ind | No |
| Water Contam Ind | No |
| Could Be Hca | No |
| Commodity Reached Hca | No |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 3 |
| Est Cost Prop Damage | 55000 |
| Est Cost Emergency | 0 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 55003 |
| Accident Psig | 635 |
| Mop Psig | 1000 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 50017 |
| 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 | 2016-03-08 00:00:00 |
| Authorizer Name | N*** J**** |
| Authorizer Telephone | 580-395-6304 |
| Authorizer Title | Regulatory Compliance Coordinator |
| Authorizer Email | N*********@o****.com |
| Narrative | On august 21, 2015 oneok contractor sandblasting the #1 10" pipeline out of coahoma storage to verify an anomoly indicated by ili data, noticed hydrocarbon vapors coming from the pipe at the 12 o'clock position. Prior to the work, the excavation had been inspected and was clear of hydrocarbons. The oneok inspector confirmed hydrocarbon release on the pipeline at 13:18 hrs., inspector contacted pipeline control center and the pipeline supervisor. The pipeline was shutdown at 13:20 hrs. On 8/21/2015. Work to install a temporary clamp bgan and the release was contained by 15:45 hrs.. Oneok then displaced the hydrocarbons in the pipeline with nitrogen and 2 joints (approximately 80 ft.) of pipe were replaced at the location. Upon completion of the pipe replacement, the pipeline was returned to normal operation at approximately 11:35 hrs. On 8/23/2015. Corrected pipe specs to API 5l - 3/08/2016. |
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