Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2017-08-08 — TX
Operator
Seadrift Pipeline Corp
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)
$80,000
Incident datetime
2017-08-08 09:45
Report number
Location
TX
Narrative
A propane leak was experience from the ella brownsville pipeline. A local landowner contacted the operator when he observed ice build-up on the ground. Upon further investigation by the pipeline technician, an underground leak was discovered. There was no fire, explosion, or loss of property. Upon notification to the houston control center, the feed into the pipeline from suppliers was immediately shutdown, and the consumer was asked to take as much propane as possible to bring the line pressure down. Clearing of an 8 mile section of line commenced that evening, and the line was cleared to a flare in preparation for excavation, analysis and repair of the leak site. It was determined that the leak originated from a corrosion pinhole, metallurgical analysis determined that it was microbiologically induced corrosion. To prevent recurrence, dow removed approximately 20-feet of pipe, including the leak site, and replaced it with new pipe before placing back in service.
Detailed record list
Report Received Date
2017-09-07 00:00:00
Iyear
2017
Report Number
20170279
Supplemental Number
30129
Report Type
Supplemental Final
Operator Id
26086
Name
Seadrift Pipeline Corp
Operator Street Address
1000 County Road 340
Operator City Name
Angleton
Operator State Abbreviation
TX
Operator Postal Code
77515
Local Datetime
2017-08-08 09:45:00
Location Latitude
26.189737
Location Longitude
-97.434653
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
2
Intentional Release Bbls
15
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Notification From Public
Incident Identified Datetime
2017-08-08 09:45:00
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2017-08-08 09:50:00
Restart Datetime
2017-10-19 09:00:00
On Site Datetime
2017-08-08 09:45:00
Nrc Rpt Num
Nrc Notification Not Required
Ignite Ind
No
Explode Ind
No
Upstream Valve Type Ind
Manual
Downstream Valve Type Ind
Manual
Num Pub Evacuated
0
Pipe Fac Name
Gcpl_ella-Brownsville
Segment Name
Ella Brownsville
Onshore State Abbreviation
Tx
Onshore Postal Code
78566
Onshore City Name
Not Within A Municipality
Onshore County Name
Cameron
Designated Location
Survey Station No.
Designated Name
82223
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
54
Crossing
No
Pipe Facility Type
Intrastate
Item Involved
Pipe
Pipe Type
Pipe Body
Pipe Diameter
6
Pipe Wall Thickness
0.25
Pipe Smys
42000
Pipe Specification
X-52
Pipe Seam Type
Seamless
Pipe Manufacturer
Youngstown
Pipe Coating Type
Cold Applied Tape
Installation Year
1961
Manufactured Year
1961
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
30000
Est Cost Prop Damage
80000
Est Cost Emergency
0
Est Cost Environmental
0
Est Cost Other
0
Prpty
110000
Accident Psig
320
Mop Psig
1902
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
Yes
Exceed Restriction Ind
No
Phmsa Restriction Ind
Not Mandated
Length Segment Isolated
36673
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
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 leak was due to corrosion, and the low leak rate was not detectable by scada. Controller actions were immediate once leak was identified.
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
Microbiological Corrosion Ind
Yes
Field Exam Basis Ind
Yes
Metallurgical Basis Ind
Yes
Underground Location
Yes
Under Cathodic Protection Ind
Yes
Cathodic Pro Start Year
1962
Shielding Evident
Yes
Cathodic Survey Type
Yes
Cp Annual Survey Ind
Yes
Cp Annual Survey Year
2017
Prior Damage
No
Collected Data Ind
Yes
Axial Magnetic Flx Lkg Ind
Yes
Geometry Deformation Ind
Yes
Axial Recent Year
2017
Geometry Recent Year
2017
Has Hydrtst Conduc Before Ind
Yes
Hydrtst Most Rcnt Year
1994
Hydrtst Most Rcnt Pressure
2860
Direct Asmnt Conducted
No
Non Destructive Exam Ind
No
Preparer Name
J******* A*******
Preparer Title
Regulatory Compliance Specialist
Preparer Email
J*********@d**.com
Preparer Telephone
979-238-0361
Preparer Fax
979-238-5685
Prepared Date
2018-03-29 00:00:00
Authorizer Name
J******* A*******
Authorizer Telephone
979-238-0361
Authorizer Title
Regulatory Complaince Specialist
Authorizer Email
J*********@d**.com
Narrative
A propane leak was experience from the ella brownsville pipeline. A local landowner contacted the operator when he observed ice build-up on the ground. Upon further investigation by the pipeline technician, an underground leak was discovered. There was no fire, explosion, or loss of property. Upon notification to the houston control center, the feed into the pipeline from suppliers was immediately shutdown, and the consumer was asked to take as much propane as possible to bring the line pressure down. Clearing of an 8 mile section of line commenced that evening, and the line was cleared to a flare in preparation for excavation, analysis and repair of the leak site. It was determined that the leak originated from a corrosion pinhole, metallurgical analysis determined that it was microbiologically induced corrosion. To prevent recurrence, dow removed approximately 20-feet of pipe, including the leak site, and replaced it with new pipe before placing back in service.
| Report Received Date | 2017-09-07 00:00:00 |
|---|---|
| Iyear | 2017 |
| Report Number | 20170279 |
| Supplemental Number | 30129 |
| Report Type | Supplemental Final |
| Operator Id | 26086 PHMSA Enforcement |
| Name | Seadrift Pipeline Corp |
| Operator Street Address | 1000 County Road 340 |
| Operator City Name | Angleton |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77515 |
| Local Datetime | 2017-08-08 09:45:00 |
| Location Latitude | 26.189737 Google Maps OpenStreetMap |
| Location Longitude | -97.434653 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 | 2 |
| Intentional Release Bbls | 15 |
| Recovered Bbls | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Notification From Public |
| Incident Identified Datetime | 2017-08-08 09:45:00 |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2017-08-08 09:50:00 |
| Restart Datetime | 2017-10-19 09:00:00 |
| On Site Datetime | 2017-08-08 09:45:00 |
| Nrc Rpt Num | Nrc Notification Not Required 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 | Gcpl_ella-Brownsville |
| Segment Name | Ella Brownsville |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 78566 |
| Onshore City Name | Not Within A Municipality |
| Onshore County Name | Cameron |
| Designated Location | Survey Station No. |
| Designated Name | 82223 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 54 |
| Crossing | No |
| Pipe Facility Type | Intrastate |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Pipe Diameter | 6 |
| Pipe Wall Thickness | 0.25 |
| Pipe Smys | 42000 |
| Pipe Specification | X-52 |
| Pipe Seam Type | Seamless |
| Pipe Manufacturer | Youngstown |
| Pipe Coating Type | Cold Applied Tape |
| Installation Year | 1961 |
| Manufactured Year | 1961 |
| 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 | 30000 |
| Est Cost Prop Damage | 80000 |
| Est Cost Emergency | 0 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 110000 |
| Accident Psig | 320 |
| Mop Psig | 1902 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | Yes |
| Exceed Restriction Ind | No |
| Phmsa Restriction Ind | Not Mandated |
| Length Segment Isolated | 36673 |
| 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 | 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 leak was due to corrosion, and the low leak rate was not detectable by scada. Controller actions were immediate once leak was identified. |
| 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 |
| Microbiological Corrosion Ind | Yes |
| Field Exam Basis Ind | Yes |
| Metallurgical Basis Ind | Yes |
| Underground Location | Yes |
| Under Cathodic Protection Ind | Yes |
| Cathodic Pro Start Year | 1962 |
| Shielding Evident | Yes |
| Cathodic Survey Type | Yes |
| Cp Annual Survey Ind | Yes |
| Cp Annual Survey Year | 2017 |
| Prior Damage | No |
| Collected Data Ind | Yes |
| Axial Magnetic Flx Lkg Ind | Yes |
| Geometry Deformation Ind | Yes |
| Axial Recent Year | 2017 |
| Geometry Recent Year | 2017 |
| Has Hydrtst Conduc Before Ind | Yes |
| Hydrtst Most Rcnt Year | 1994 |
| Hydrtst Most Rcnt Pressure | 2860 |
| Direct Asmnt Conducted | No |
| Non Destructive Exam Ind | No |
| Preparer Name | J******* A******* |
| Preparer Title | Regulatory Compliance Specialist |
| Preparer Email | J*********@d**.com |
| Preparer Telephone | 979-238-0361 |
| Preparer Fax | 979-238-5685 |
| Prepared Date | 2018-03-29 00:00:00 |
| Authorizer Name | J******* A******* |
| Authorizer Telephone | 979-238-0361 |
| Authorizer Title | Regulatory Complaince Specialist |
| Authorizer Email | J*********@d**.com |
| Narrative | A propane leak was experience from the ella brownsville pipeline. A local landowner contacted the operator when he observed ice build-up on the ground. Upon further investigation by the pipeline technician, an underground leak was discovered. There was no fire, explosion, or loss of property. Upon notification to the houston control center, the feed into the pipeline from suppliers was immediately shutdown, and the consumer was asked to take as much propane as possible to bring the line pressure down. Clearing of an 8 mile section of line commenced that evening, and the line was cleared to a flare in preparation for excavation, analysis and repair of the leak site. It was determined that the leak originated from a corrosion pinhole, metallurgical analysis determined that it was microbiologically induced corrosion. To prevent recurrence, dow removed approximately 20-feet of pipe, including the leak site, and replaced it with new pipe before placing back in service. |
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