Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2011-05-14 — OK
Operator
Oneok Ngl Pipeline Lp
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)
$549,459
Incident datetime
2011-05-14 15:40
Report number
Location
OK
Narrative
Third party reported product running out of pipeline vent pipes on oneok 106w pipeline at 135th st crossing in romeoville, ill. Pipeline control center shut down pipeline and dispatched oneok personnel. Pipeline was isolated by blockvalves and product was flared at oneok lemont station. Carrier pipe at road crossing was removed and replaced with new pipe. Replacement pipe was hydrostatically tested before line was returned to operation. Failed pipe was sent out for metallurgical analysis (kiefner & assoc.) to determine cause of failure. Leak was caused by external corrosion of the pipe body within a cased road crossing. An isolated corrosion pit was found underneasth a casing spacer. The metal loss had reached a depth of 93% wall thickness, at which point the remaining ligament failed due to internal pressure and a quarter-inch tear formed. The casing spacers used for this particular crossing were comprised of bolt-on steel sleeves that were insulated and cushioned from the coated pipe surface with a rubber pad. The rubber pad was out of position on the casing spacer that was over the leak such that part of the steel spacer was in contact with the pipe surface.
Detailed record list
Report Received Date
2011-05-15 00:00:00
Iyear
2011
Report Number
20110141
Supplemental Number
16340
Report Type
Supplemental Final
Operator Id
32109
Name
Oneok Ngl Pipeline Lp
Operator Street Address
100 West Fifth Street
Operator City Name
Tulsa
Operator State Abbreviation
OK
Operator Postal Code
74103
Local Datetime
2011-05-14 15:40:00
Location Latitude
41.639016
Location Longitude
-88.124155
Commodity Released Type
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Commodity Subtype
Other Hvl
Commodity Details
Refinery Grade Butane
Unintentional Release Bbls
100
Intentional Release Bbls
0
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Notification From Emergency Responder
Incident Identified Datetime
2011-05-14 15:40:00
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2011-05-14 15:40:00
Restart Datetime
2011-05-27 18:30:00
On Site Datetime
2011-05-14 16:30:00
Nrc Rpt Datetime
2011-05-14 19:55:00
Nrc Rpt Num
976327
Ignite Ind
No
Explode Ind
No
Upstream Valve Type Ind
Manual
Downstream Valve Type Ind
Manual
Num Pub Evacuated
25
Pipe Fac Name
Oneok North System 106w Pipeline
Segment Name
106w Pipeline Index 11106
Onshore State Abbreviation
Il
Onshore Postal Code
60446
Onshore City Name
Romeoville
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Under Pavement
Depth Of Cover
100
Crossing
Yes
Road Crossing Ind
Yes
Road Type
Cased
Pipe Facility Type
Intrastate
Item Involved
Pipe
Pipe Type
Pipe Body
Pipe Diameter
8.625
Pipe Wall Thickness
0.25
Pipe Smys
52000
Pipe Specification
Smaw
Pipe Seam Type
Erw - High Frequency
Pipe Manufacturer
Unknown
Pipe Coating Type
Cold Applied Tape
Installation Year
1967
Manufactured Year
1967
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Pinhole
Leak Type Other
Unknown At This Time
Wildlife Impact Ind
No
Soil Contamination
Yes
Long Term Assessment
No
Remediation Ind
Yes
Soil Remed Ind
Yes
Water Contam Ind
Yes
Surface Contam Ind
Yes
Amount Released
100
Rel Water Name
Unnamed Wetlands
Could Be Hca
Yes
Commodity Reached Hca
Yes
High Pop Ind
Yes
High Pop Yes No
Yes
Est Cost Oper Paid
20000
Est Cost Gas Released
7140
Est Cost Prop Damage
549459
Est Cost Emergency
15000
Est Cost Environmental
129589
Est Cost Other
0
Prpty
721188
Accident Psig
1141
Mop Psig
1440
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
77774
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
Yes
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
Operator determined controllers actions did not contribute to the release
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
Metallurgical Basis Ind
Yes
Underground Location
Yes
Under Cathodic Protection Ind
Yes
Cathodic Pro Start Year
1968
Shielding Evident
No
Cathodic Survey Type
Yes
Cp Annual Survey Ind
Yes
Cp Annual Survey Year
2011
Prior Damage
No
Collected Data Ind
Yes
Axial Magnetic Flx Lkg Ind
Yes
Axial Recent Year
2007
Has Hydrtst Conduc Before Ind
No
Direct Asmnt Conducted
No
Non Destructive Exam Ind
No
Preparer Name
N*** J****
Preparer Title
Dot Compliance Coordinator
Preparer Email
N*********@o****.com
Preparer Telephone
580-395-6304
Preparer Fax
580-395-2933
Prepared Date
2012-01-17 00:00:00
Authorizer Name
N*** J****
Authorizer Telephone
580-395-6304
Authorizer Title
Dot Compliance Coordinator
Authorizer Email
N*********@o****.com
Narrative
Third party reported product running out of pipeline vent pipes on oneok 106w pipeline at 135th st crossing in romeoville, ill. Pipeline control center shut down pipeline and dispatched oneok personnel. Pipeline was isolated by blockvalves and product was flared at oneok lemont station. Carrier pipe at road crossing was removed and replaced with new pipe. Replacement pipe was hydrostatically tested before line was returned to operation. Failed pipe was sent out for metallurgical analysis (kiefner & assoc.) to determine cause of failure. Leak was caused by external corrosion of the pipe body within a cased road crossing. An isolated corrosion pit was found underneasth a casing spacer. The metal loss had reached a depth of 93% wall thickness, at which point the remaining ligament failed due to internal pressure and a quarter-inch tear formed. The casing spacers used for this particular crossing were comprised of bolt-on steel sleeves that were insulated and cushioned from the coated pipe surface with a rubber pad. The rubber pad was out of position on the casing spacer that was over the leak such that part of the steel spacer was in contact with the pipe surface.
| Report Received Date | 2011-05-15 00:00:00 |
|---|---|
| Iyear | 2011 |
| Report Number | 20110141 |
| Supplemental Number | 16340 |
| Report Type | Supplemental Final |
| Operator Id | 32109 PHMSA Enforcement |
| Name | Oneok Ngl Pipeline Lp |
| Operator Street Address | 100 West Fifth Street |
| Operator City Name | Tulsa |
| Operator State Abbreviation | OK |
| Operator Postal Code | 74103 |
| Local Datetime | 2011-05-14 15:40:00 |
| Location Latitude | 41.639016 Google Maps OpenStreetMap |
| Location Longitude | -88.124155 Google Maps OpenStreetMap |
| Commodity Released Type | Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions |
| Commodity Subtype | Other Hvl |
| Commodity Details | Refinery Grade Butane |
| Unintentional Release Bbls | 100 |
| Intentional Release Bbls | 0 |
| Recovered Bbls | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Notification From Emergency Responder |
| Incident Identified Datetime | 2011-05-14 15:40:00 |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2011-05-14 15:40:00 |
| Restart Datetime | 2011-05-27 18:30:00 |
| On Site Datetime | 2011-05-14 16:30:00 |
| Nrc Rpt Datetime | 2011-05-14 19:55:00 |
| Nrc Rpt Num | 976327 NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Upstream Valve Type Ind | Manual |
| Downstream Valve Type Ind | Manual |
| Num Pub Evacuated | 25 |
| Pipe Fac Name | Oneok North System 106w Pipeline |
| Segment Name | 106w Pipeline Index 11106 |
| Onshore State Abbreviation | Il |
| Onshore Postal Code | 60446 |
| Onshore City Name | Romeoville |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Pavement |
| Depth Of Cover | 100 |
| Crossing | Yes |
| Road Crossing Ind | Yes |
| Road Type | Cased |
| Pipe Facility Type | Intrastate |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Pipe Diameter | 8.625 |
| Pipe Wall Thickness | 0.25 |
| Pipe Smys | 52000 |
| Pipe Specification | Smaw |
| Pipe Seam Type | Erw - High Frequency |
| Pipe Manufacturer | Unknown |
| Pipe Coating Type | Cold Applied Tape |
| Installation Year | 1967 |
| Manufactured Year | 1967 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Pinhole |
| Leak Type Other | Unknown At This Time |
| Wildlife Impact Ind | No |
| Soil Contamination | Yes |
| Long Term Assessment | No |
| Remediation Ind | Yes |
| Soil Remed Ind | Yes |
| Water Contam Ind | Yes |
| Surface Contam Ind | Yes |
| Amount Released | 100 |
| Rel Water Name | Unnamed Wetlands |
| Could Be Hca | Yes |
| Commodity Reached Hca | Yes |
| High Pop Ind | Yes |
| High Pop Yes No | Yes |
| Est Cost Oper Paid | 20000 |
| Est Cost Gas Released | 7140 |
| Est Cost Prop Damage | 549459 |
| Est Cost Emergency | 15000 |
| Est Cost Environmental | 129589 |
| Est Cost Other | 0 |
| Prpty | 721188 |
| Accident Psig | 1141 |
| Mop Psig | 1440 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 77774 |
| 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 | Yes |
| 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 | Operator determined controllers actions did not contribute to the release |
| 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 |
| Metallurgical Basis Ind | Yes |
| Underground Location | Yes |
| Under Cathodic Protection Ind | Yes |
| Cathodic Pro Start Year | 1968 |
| Shielding Evident | No |
| Cathodic Survey Type | Yes |
| Cp Annual Survey Ind | Yes |
| Cp Annual Survey Year | 2011 |
| Prior Damage | No |
| Collected Data Ind | Yes |
| Axial Magnetic Flx Lkg Ind | Yes |
| Axial Recent Year | 2007 |
| Has Hydrtst Conduc Before Ind | No |
| Direct Asmnt Conducted | No |
| Non Destructive Exam Ind | No |
| Preparer Name | N*** J**** |
| Preparer Title | Dot Compliance Coordinator |
| Preparer Email | N*********@o****.com |
| Preparer Telephone | 580-395-6304 |
| Preparer Fax | 580-395-2933 |
| Prepared Date | 2012-01-17 00:00:00 |
| Authorizer Name | N*** J**** |
| Authorizer Telephone | 580-395-6304 |
| Authorizer Title | Dot Compliance Coordinator |
| Authorizer Email | N*********@o****.com |
| Narrative | Third party reported product running out of pipeline vent pipes on oneok 106w pipeline at 135th st crossing in romeoville, ill. Pipeline control center shut down pipeline and dispatched oneok personnel. Pipeline was isolated by blockvalves and product was flared at oneok lemont station. Carrier pipe at road crossing was removed and replaced with new pipe. Replacement pipe was hydrostatically tested before line was returned to operation. Failed pipe was sent out for metallurgical analysis (kiefner & assoc.) to determine cause of failure. Leak was caused by external corrosion of the pipe body within a cased road crossing. An isolated corrosion pit was found underneasth a casing spacer. The metal loss had reached a depth of 93% wall thickness, at which point the remaining ligament failed due to internal pressure and a quarter-inch tear formed. The casing spacers used for this particular crossing were comprised of bolt-on steel sleeves that were insulated and cushioned from the coated pipe surface with a rubber pad. The rubber pad was out of position on the casing spacer that was over the leak such that part of the steel spacer was in contact with the pipe surface. |
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