Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2016-06-02 — TX
Operator
Exxonmobil Pipeline Co
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)
$0
Incident datetime
2016-06-02 16:00
Report number
Location
TX
Narrative
The failure location appears to be under, or very close to a centerpoint transmission tower. Due to safety concerns empco will not excavate close enough to the tower to expose the leak site. Empco is currently deciding next steps. The pipeline segment is currently isolated and filled with nitrogen. Part c question 3 pipe body is assumed. August 2018 update - empco was unable to excavate the failure point due to the proximity of a power line tower. A tethered ili was used to inspect the segment. Data from the tool suggests disbonding of x-tru coating on the effected joint. The line segment was left in place and grout filled. New fbe-coated pipe was installed and recommissioned on 8/7/2017. January 21, 2019 update - at PHMSA's request changed part a, 14b from a date of 8/7/18 to 8/7/17, and changed part c, 3a from 6.625 to 6.0. Changed preparers information. Report is final.
Detailed record list
Report Received Date
2016-07-01 00:00:00
Iyear
2016
Report Number
20160210
Supplemental Number
31524
Report Type
Supplemental Final
Operator Id
4906
Name
Exxonmobil Pipeline Co
Operator Street Address
22777 Springwoods Village Parkway E2.2b-Emp
Operator City Name
Spring
Operator State Abbreviation
TX
Operator Postal Code
77389
Local Datetime
2016-06-02 16:00:00
Location Latitude
29.72056
Location Longitude
-95.13222
Commodity Released Type
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Commodity Subtype
Other Hvl
Commodity Details
Dilute Propylene
Unintentional Release Bbls
1.97
Intentional Release Bbls
0
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Other
Accident Details
Release Is Located At A Shelll Refinery, Shell Employee Notified Empco
Incident Identified Datetime
2016-06-02 16:00:00
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2016-06-02 21:00:00
Restart Datetime
2017-08-07 14:00:00
On Site Datetime
2016-06-02 17:00:00
Nrc Rpt Datetime
2016-06-09 15:26:00
Nrc Rpt Num
1150155
Ignite Ind
No
Explode Ind
No
Upstream Valve Type Ind
Manual
Downstream Valve Type Ind
Manual
Num Pub Evacuated
0
Pipe Fac Name
Tx-206
Segment Name
Tx-206
Onshore State Abbreviation
Tx
Onshore Postal Code
77015
Onshore City Name
Pasadena
Onshore County Name
Harris
Designated Location
Milepost/valve Station
Designated Name
Shell Plant
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
60
Crossing
No
Pipe Facility Type
Intrastate
Item Involved
Pipe
Pipe Type
Pipe Body
Pipe Diameter
6
Pipe Wall Thickness
0.188
Pipe Smys
42000
Pipe Specification
X-42
Pipe Seam Type
Erw � Unknown Frequency
Pipe Manufacturer
Us Steel
Pipe Coating Type
Extruded Polyehylene
Installation Year
1969
Manufactured Year
1969
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
Yes
Commodity Reached Hca
Yes
High Pop Ind
Yes
High Pop Yes No
Yes
Est Cost Oper Paid
0
Est Cost Gas Released
50
Est Cost Prop Damage
0
Est Cost Emergency
150000
Est Cost Environmental
5000
Est Cost Other
0
Prpty
155050
Accident Psig
500
Mop Psig
1440
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
36700
Internal Inspection Ind
No
Diameter Change 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
Pinhole release was not identified by the scada-based system.
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
Other Corrosion Ind
Yes
Corrosion Type Details
It Was Not Possible To Excavate The Affected Pipe. A Tethered Inline Inspection Tool Identified The Anomaly As External Metal Loss.
Other Basis Ind
Yes
Corrosion Basis Details
It Was Not Possible To Excavate The Affected Pipe. A Tethered Inline Inspection Tool Identified The Anomaly As External Metal Loss.
Underground Location
Yes
Under Cathodic Protection Ind
Yes
Cathodic Pro Start Year
1969
Shielding Evident
Yes
Cathodic Survey Type
No
Prior Damage
Yes
Collected Data Ind
Yes
Axial Magnetic Flx Lkg Ind
Yes
Axial Recent Year
2017
Geometry Recent Year
2017
Has Hydrtst Conduc Before Ind
No
Direct Asmnt Conducted
No
Non Destructive Exam Ind
No
Preparer Name
J** M*********
Preparer Title
Pipeline Safety Advisor
Preparer Email
J*****************@e*********.com
Preparer Telephone
8326246121
Prepared Date
2019-01-21 00:00:00
Authorizer Name
C******* H********
Authorizer Telephone
8326247920
Authorizer Title
Sshe Department Manager
Authorizer Email
C*******************@e*********.com
Narrative
The failure location appears to be under, or very close to a centerpoint transmission tower. Due to safety concerns empco will not excavate close enough to the tower to expose the leak site. Empco is currently deciding next steps. The pipeline segment is currently isolated and filled with nitrogen. Part c question 3 pipe body is assumed. August 2018 update - empco was unable to excavate the failure point due to the proximity of a power line tower. A tethered ili was used to inspect the segment. Data from the tool suggests disbonding of x-tru coating on the effected joint. The line segment was left in place and grout filled. New fbe-coated pipe was installed and recommissioned on 8/7/2017. January 21, 2019 update - at PHMSA's request changed part a, 14b from a date of 8/7/18 to 8/7/17, and changed part c, 3a from 6.625 to 6.0. Changed preparers information. Report is final.
| Report Received Date | 2016-07-01 00:00:00 |
|---|---|
| Iyear | 2016 |
| Report Number | 20160210 |
| Supplemental Number | 31524 |
| Report Type | Supplemental Final |
| Operator Id | 4906 PHMSA Enforcement |
| Name | Exxonmobil Pipeline Co |
| Operator Street Address | 22777 Springwoods Village Parkway E2.2b-Emp |
| Operator City Name | Spring |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77389 |
| Local Datetime | 2016-06-02 16:00:00 |
| Location Latitude | 29.72056 Google Maps OpenStreetMap |
| Location Longitude | -95.13222 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 | Dilute Propylene |
| Unintentional Release Bbls | 1.97 |
| Intentional Release Bbls | 0 |
| Recovered Bbls | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Other |
| Accident Details | Release Is Located At A Shelll Refinery, Shell Employee Notified Empco |
| Incident Identified Datetime | 2016-06-02 16:00:00 |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2016-06-02 21:00:00 |
| Restart Datetime | 2017-08-07 14:00:00 |
| On Site Datetime | 2016-06-02 17:00:00 |
| Nrc Rpt Datetime | 2016-06-09 15:26:00 |
| Nrc Rpt Num | 1150155 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 | Tx-206 |
| Segment Name | Tx-206 |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 77015 |
| Onshore City Name | Pasadena |
| Onshore County Name | Harris |
| Designated Location | Milepost/valve Station |
| Designated Name | Shell Plant |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 60 |
| Crossing | No |
| Pipe Facility Type | Intrastate |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Pipe Diameter | 6 |
| Pipe Wall Thickness | 0.188 |
| Pipe Smys | 42000 |
| Pipe Specification | X-42 |
| Pipe Seam Type | Erw � Unknown Frequency |
| Pipe Manufacturer | Us Steel |
| Pipe Coating Type | Extruded Polyehylene |
| Installation Year | 1969 |
| Manufactured Year | 1969 |
| 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 | Yes |
| Commodity Reached Hca | Yes |
| High Pop Ind | Yes |
| High Pop Yes No | Yes |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 50 |
| Est Cost Prop Damage | 0 |
| Est Cost Emergency | 150000 |
| Est Cost Environmental | 5000 |
| Est Cost Other | 0 |
| Prpty | 155050 |
| Accident Psig | 500 |
| Mop Psig | 1440 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 36700 |
| Internal Inspection Ind | No |
| Diameter Change 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 | Pinhole release was not identified by the scada-based system. |
| 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 |
| Other Corrosion Ind | Yes |
| Corrosion Type Details | It Was Not Possible To Excavate The Affected Pipe. A Tethered Inline Inspection Tool Identified The Anomaly As External Metal Loss. |
| Other Basis Ind | Yes |
| Corrosion Basis Details | It Was Not Possible To Excavate The Affected Pipe. A Tethered Inline Inspection Tool Identified The Anomaly As External Metal Loss. |
| Underground Location | Yes |
| Under Cathodic Protection Ind | Yes |
| Cathodic Pro Start Year | 1969 |
| Shielding Evident | Yes |
| Cathodic Survey Type | No |
| Prior Damage | Yes |
| Collected Data Ind | Yes |
| Axial Magnetic Flx Lkg Ind | Yes |
| Axial Recent Year | 2017 |
| Geometry Recent Year | 2017 |
| Has Hydrtst Conduc Before Ind | No |
| Direct Asmnt Conducted | No |
| Non Destructive Exam Ind | No |
| Preparer Name | J** M********* |
| Preparer Title | Pipeline Safety Advisor |
| Preparer Email | J*****************@e*********.com |
| Preparer Telephone | 8326246121 |
| Prepared Date | 2019-01-21 00:00:00 |
| Authorizer Name | C******* H******** |
| Authorizer Telephone | 8326247920 |
| Authorizer Title | Sshe Department Manager |
| Authorizer Email | C*******************@e*********.com |
| Narrative | The failure location appears to be under, or very close to a centerpoint transmission tower. Due to safety concerns empco will not excavate close enough to the tower to expose the leak site. Empco is currently deciding next steps. The pipeline segment is currently isolated and filled with nitrogen. Part c question 3 pipe body is assumed. August 2018 update - empco was unable to excavate the failure point due to the proximity of a power line tower. A tethered ili was used to inspect the segment. Data from the tool suggests disbonding of x-tru coating on the effected joint. The line segment was left in place and grout filled. New fbe-coated pipe was installed and recommissioned on 8/7/2017. January 21, 2019 update - at PHMSA's request changed part a, 14b from a date of 8/7/18 to 8/7/17, and changed part c, 3a from 6.625 to 6.0. Changed preparers information. Report is final. |
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