Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2016-07-17 — TX
Operator
Exxonmobil Pipeline Co
Cause
Equipment 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)
$100
Incident datetime
2016-07-17 09:30
Report number
Location
TX
Narrative
Empco was notified of a refinery grade propylene (rgp) release at above ground piping near bayway dr. In baytown. Empco began shutting down rgp flow by closing block valves. The baytown fire dept. Issued a limited shelter-in-place and evacuation orders which were both lifted after confirming that the release had stopped at approximately 1500. The release was caused by a failed pressure warning device (pwd) gasket on a tube turn hinged closure installed on the scraper trap.
Detailed record list
Report Received Date
2016-08-16 00:00:00
Iyear
2016
Report Number
20160254
Supplemental Number
21852
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
2016-07-17 09:30:00
Location Latitude
29.74787
Location Longitude
-95.0312
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
90
Intentional Release Bbls
0
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Notification From Public
Incident Identified Datetime
2016-07-17 09:30:00
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2016-07-17 09:45:00
Restart Datetime
2016-07-17 19:30:00
On Site Datetime
2016-07-17 10:15:00
Nrc Rpt Datetime
2016-07-17 11:25:00
Nrc Rpt Num
1153628
Ignite Ind
No
Explode Ind
No
Upstream Valve Type Ind
Remotely Controlled
Downstream Valve Type Ind
Remotely Controlled
Num Pub Evacuated
30
Pipe Fac Name
Tx-135a Mt Belvieu To Clearlake
Segment Name
Bayway Trap
Onshore State Abbreviation
Tx
Onshore Postal Code
77520
Onshore City Name
Baytown
Onshore County Name
Harris
Designated Location
Milepost/valve Station
Designated Name
Bayway Trap
Federal
No
Location Type
Originated On Operator-Controlled Property, But Then Flowed Or Migrated Off The Property
Incident Area Type
Aboveground
Incident Area Subtype
Typical Aboveground Facility Piping Or Appurtenance
Crossing
No
Pipe Facility Type
Intrastate
Item Involved
Scraper/pig Trap
Installation Year
1980
Material Involved
Material Other Than Carbon Steel
Material Details
Gasket Material
Release Type
Leak
Leak Type
Seal Or Packing
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
Commercially Nav Ind
Yes
Commercially Nav Yes No
Yes
High Pop Ind
Yes
High Pop Yes No
Yes
Est Cost Oper Paid
0
Est Cost Gas Released
3500
Est Cost Prop Damage
100
Est Cost Emergency
3400
Est Cost Environmental
0
Est Cost Other
0
Prpty
7000
Accident Psig
874
Mop Psig
1440
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
41659
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
A review of the scada data did not show any unusual alarms or events that should have alerted the controller.
Employee Drug Test Ind
Yes
Contractor Drug Test Ind
No
Num Employees Tested
1
Num Employees Failed
0
Cause
Equipment Failure
Cause Details
Other Equipment Failure
Eq Failure Type
Other Equipment Failure
Failure Details
The Release Was Caused By The Failure Of A Gasket In A Pressure Warning Device On The Scraper Trap Door.
Additional Breakdown Ind
Yes
Preparer Name
T*** M*********
Preparer Title
Pipeline Safety Advisor
Preparer Email
T**************@e*********.com
Preparer Telephone
8326247880
Preparer Fax
8326486336
Prepared Date
2016-11-15 00:00:00
Authorizer Name
M*** D* W******
Authorizer Telephone
8326247868
Authorizer Title
Sshe Manager
Authorizer Email
M*************@e*********.com
Narrative
Empco was notified of a refinery grade propylene (rgp) release at above ground piping near bayway dr. In baytown. Empco began shutting down rgp flow by closing block valves. The baytown fire dept. Issued a limited shelter-in-place and evacuation orders which were both lifted after confirming that the release had stopped at approximately 1500. The release was caused by a failed pressure warning device (pwd) gasket on a tube turn hinged closure installed on the scraper trap.
| Report Received Date | 2016-08-16 00:00:00 |
|---|---|
| Iyear | 2016 |
| Report Number | 20160254 |
| Supplemental Number | 21852 |
| 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 | 2016-07-17 09:30:00 |
| Location Latitude | 29.74787 Google Maps OpenStreetMap |
| Location Longitude | -95.0312 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 | 90 |
| Intentional Release Bbls | 0 |
| Recovered Bbls | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Notification From Public |
| Incident Identified Datetime | 2016-07-17 09:30:00 |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2016-07-17 09:45:00 |
| Restart Datetime | 2016-07-17 19:30:00 |
| On Site Datetime | 2016-07-17 10:15:00 |
| Nrc Rpt Datetime | 2016-07-17 11:25:00 |
| Nrc Rpt Num | 1153628 NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Upstream Valve Type Ind | Remotely Controlled |
| Downstream Valve Type Ind | Remotely Controlled |
| Num Pub Evacuated | 30 |
| Pipe Fac Name | Tx-135a Mt Belvieu To Clearlake |
| Segment Name | Bayway Trap |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 77520 |
| Onshore City Name | Baytown |
| Onshore County Name | Harris |
| Designated Location | Milepost/valve Station |
| Designated Name | Bayway Trap |
| Federal | No |
| Location Type | Originated On Operator-Controlled Property, But Then Flowed Or Migrated Off The Property |
| Incident Area Type | Aboveground |
| Incident Area Subtype | Typical Aboveground Facility Piping Or Appurtenance |
| Crossing | No |
| Pipe Facility Type | Intrastate |
| Item Involved | Scraper/pig Trap |
| Installation Year | 1980 |
| Material Involved | Material Other Than Carbon Steel |
| Material Details | Gasket Material |
| Release Type | Leak |
| Leak Type | Seal Or Packing |
| 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 |
| Commercially Nav Ind | Yes |
| Commercially Nav Yes No | Yes |
| High Pop Ind | Yes |
| High Pop Yes No | Yes |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 3500 |
| Est Cost Prop Damage | 100 |
| Est Cost Emergency | 3400 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 7000 |
| Accident Psig | 874 |
| Mop Psig | 1440 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 41659 |
| 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 | A review of the scada data did not show any unusual alarms or events that should have alerted the controller. |
| Employee Drug Test Ind | Yes |
| Contractor Drug Test Ind | No |
| Num Employees Tested | 1 |
| Num Employees Failed | 0 |
| Cause | Equipment Failure |
| Cause Details | Other Equipment Failure |
| Eq Failure Type | Other Equipment Failure |
| Failure Details | The Release Was Caused By The Failure Of A Gasket In A Pressure Warning Device On The Scraper Trap Door. |
| Additional Breakdown Ind | Yes |
| Preparer Name | T*** M********* |
| Preparer Title | Pipeline Safety Advisor |
| Preparer Email | T**************@e*********.com |
| Preparer Telephone | 8326247880 |
| Preparer Fax | 8326486336 |
| Prepared Date | 2016-11-15 00:00:00 |
| Authorizer Name | M*** D* W****** |
| Authorizer Telephone | 8326247868 |
| Authorizer Title | Sshe Manager |
| Authorizer Email | M*************@e*********.com |
| Narrative | Empco was notified of a refinery grade propylene (rgp) release at above ground piping near bayway dr. In baytown. Empco began shutting down rgp flow by closing block valves. The baytown fire dept. Issued a limited shelter-in-place and evacuation orders which were both lifted after confirming that the release had stopped at approximately 1500. The release was caused by a failed pressure warning device (pwd) gasket on a tube turn hinged closure installed on the scraper trap. |
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