Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2016-08-08 — TX
Operator
West Texas Gulf Pipeline Co
Cause
Equipment Failure
Commodity
Crude Oil
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$157,000
Incident datetime
2016-08-08 06:12
Report number
Location
TX
Narrative
On the morning of august 8, 2016 delivery from tank 15 was completed at approximately 02:35. Control center received tank creep alarms and contacted field operations personnel to investigate. At approximately 06:25 field personnel discovered release from tank 15 mixer area. Additional field personnel and resources were dispatched to location while tank 15 was pumped out to below tank mixer level to stop release. All free crude oil was recovered via vacuum truck and contaminated soil was remediated on site. Total volume released was 700 barrels. Approximately 250 barrels were recovered. An estimated 145 barrels was entrained in the soil and an estimated 305 barrels volitalized. It was determined in the field that the mixer assembly had failed causing the release of crude oil from the tank. The mixer assembly was removed and sent for 3rd party failure analysis. Analysis concluded that the cause was the failure of the upper c-clip of the mixer motor assembly, causing excessive vibration and ultimate failure of the mixer hinge. Other mixers of same design and manufacturer in the splp system have been inspected and repaired or retrofitted with manufacturer hinge pin replacement kits.
Detailed record list
Report Received Date
2016-09-06 00:00:00
Iyear
2016
Report Number
20160280
Supplemental Number
22427
Report Type
Supplemental Final
Operator Id
22442
Name
West Texas Gulf Pipeline Co
Operator Street Address
1300 Main Street
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Local Datetime
2016-08-08 06:12:00
Location Latitude
32.529914
Location Longitude
-100.830396
Commodity Released Type
Crude Oil
Unintentional Release Bbls
700
Recovered Bbls
395
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Cpm Leak Detection System Or Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Calculations)
Incident Identified Datetime
2016-08-08 06:12:00
System Part Involved
Onshore Breakout Tank Or Storage Vessel, Including Attached Appurtenances
On Off Shore
Onshore
Shutdown Due Accident Ind
No
Shutdown Explain
Tank Isolated And Pumped Down.
On Site Datetime
2016-08-08 06:25:00
Nrc Rpt Datetime
2016-08-08 08:29:00
Nrc Rpt Num
1155592
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Colorado City Station-Tank 15
Segment Name
23010-26" Colorado City To Wortham
Onshore State Abbreviation
Tx
Onshore Postal Code
79526
Onshore City Name
Hermleigh
Onshore County Name
Scurry
Designated Location
Survey Station No.
Designated Name
0+00
Federal
No
Location Type
Totally Contained On Operator-Controlled Property
Incident Area Type
Tank, Including Attached Appurtenances
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Tank/vessel
Tank Vessel Subtype
Mixer
Tank Type
Atmospheric
Installation Year
Unknown
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Connection Failure
Wildlife Impact Ind
No
Soil Contamination
Yes
Long Term Assessment
No
Remediation Ind
Yes
Soil Remed Ind
Yes
Water Contam Ind
No
Could Be Hca
No
Commodity Reached Hca
No
Est Cost Oper Paid
0
Est Cost Gas Released
7900
Est Cost Prop Damage
157000
Est Cost Emergency
50000
Est Cost Environmental
425000
Est Cost Other
0
Prpty
639900
Accident Psig
20
Mop Psig
285
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Pipeline Function
> 20% Smys Regulated Transmission
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
Yes
Scada Conf Ind
Yes
Cpm In Place Ind
No
Investigation Status
Yes, specify investigation result(s): (select all that apply)
Invest Schedule Ind
Yes
Invest Other Ind
Yes
Invest Other Ind Details
Controller Did Not Notify Field After Receiving Initial Tank Creep Alarm.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Other Equipment Failure
Eq Failure Type
Other Equipment Failure
Failure Details
Failure Of Upper Clip On Mixer Hinge Caused It To Laterally Separate Away From The Tank Causing Vibration Which Led To Complete Failure Of The Mixer Hinge Mechanism.
Additional Vibration Ind
Yes
Additional Support Ind
Yes
Preparer Name
T*** G* N*******
Preparer Title
Dot Compliance Manager
Preparer Email
T*********@s**************.com
Preparer Telephone
281-637-6576
Preparer Fax
877-917-0448
Prepared Date
2017-06-19 00:00:00
Authorizer Name
T*** G* N*******
Authorizer Telephone
281-637-6576
Authorizer Title
Dot Compliance Manager
Authorizer Email
T*********@s**************.com
Narrative
On the morning of august 8, 2016 delivery from tank 15 was completed at approximately 02:35. Control center received tank creep alarms and contacted field operations personnel to investigate. At approximately 06:25 field personnel discovered release from tank 15 mixer area. Additional field personnel and resources were dispatched to location while tank 15 was pumped out to below tank mixer level to stop release. All free crude oil was recovered via vacuum truck and contaminated soil was remediated on site. Total volume released was 700 barrels. Approximately 250 barrels were recovered. An estimated 145 barrels was entrained in the soil and an estimated 305 barrels volitalized. It was determined in the field that the mixer assembly had failed causing the release of crude oil from the tank. The mixer assembly was removed and sent for 3rd party failure analysis. Analysis concluded that the cause was the failure of the upper c-clip of the mixer motor assembly, causing excessive vibration and ultimate failure of the mixer hinge. Other mixers of same design and manufacturer in the splp system have been inspected and repaired or retrofitted with manufacturer hinge pin replacement kits.
| Report Received Date | 2016-09-06 00:00:00 |
|---|---|
| Iyear | 2016 |
| Report Number | 20160280 |
| Supplemental Number | 22427 |
| Report Type | Supplemental Final |
| Operator Id | 22442 PHMSA Enforcement |
| Name | West Texas Gulf Pipeline Co |
| Operator Street Address | 1300 Main Street |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77002 |
| Local Datetime | 2016-08-08 06:12:00 |
| Location Latitude | 32.529914 Google Maps OpenStreetMap |
| Location Longitude | -100.830396 Google Maps OpenStreetMap |
| Commodity Released Type | Crude Oil |
| Unintentional Release Bbls | 700 |
| Recovered Bbls | 395 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Cpm Leak Detection System Or Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Calculations) |
| Incident Identified Datetime | 2016-08-08 06:12:00 |
| System Part Involved | Onshore Breakout Tank Or Storage Vessel, Including Attached Appurtenances |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | Tank Isolated And Pumped Down. |
| On Site Datetime | 2016-08-08 06:25:00 |
| Nrc Rpt Datetime | 2016-08-08 08:29:00 |
| Nrc Rpt Num | 1155592 NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Colorado City Station-Tank 15 |
| Segment Name | 23010-26" Colorado City To Wortham |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 79526 |
| Onshore City Name | Hermleigh |
| Onshore County Name | Scurry |
| Designated Location | Survey Station No. |
| Designated Name | 0+00 |
| Federal | No |
| Location Type | Totally Contained On Operator-Controlled Property |
| Incident Area Type | Tank, Including Attached Appurtenances |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Tank/vessel |
| Tank Vessel Subtype | Mixer |
| Tank Type | Atmospheric |
| Installation Year | Unknown |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Connection Failure |
| Wildlife Impact Ind | No |
| Soil Contamination | Yes |
| Long Term Assessment | No |
| Remediation Ind | Yes |
| Soil Remed Ind | Yes |
| Water Contam Ind | No |
| Could Be Hca | No |
| Commodity Reached Hca | No |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 7900 |
| Est Cost Prop Damage | 157000 |
| Est Cost Emergency | 50000 |
| Est Cost Environmental | 425000 |
| Est Cost Other | 0 |
| Prpty | 639900 |
| Accident Psig | 20 |
| Mop Psig | 285 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Pipeline Function | > 20% Smys Regulated Transmission |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | Yes |
| Scada Conf Ind | Yes |
| Cpm In Place Ind | No |
| Investigation Status | Yes, specify investigation result(s): (select all that apply) |
| Invest Schedule Ind | Yes |
| Invest Other Ind | Yes |
| Invest Other Ind Details | Controller Did Not Notify Field After Receiving Initial Tank Creep Alarm. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Other Equipment Failure |
| Eq Failure Type | Other Equipment Failure |
| Failure Details | Failure Of Upper Clip On Mixer Hinge Caused It To Laterally Separate Away From The Tank Causing Vibration Which Led To Complete Failure Of The Mixer Hinge Mechanism. |
| Additional Vibration Ind | Yes |
| Additional Support Ind | Yes |
| Preparer Name | T*** G* N******* |
| Preparer Title | Dot Compliance Manager |
| Preparer Email | T*********@s**************.com |
| Preparer Telephone | 281-637-6576 |
| Preparer Fax | 877-917-0448 |
| Prepared Date | 2017-06-19 00:00:00 |
| Authorizer Name | T*** G* N******* |
| Authorizer Telephone | 281-637-6576 |
| Authorizer Title | Dot Compliance Manager |
| Authorizer Email | T*********@s**************.com |
| Narrative | On the morning of august 8, 2016 delivery from tank 15 was completed at approximately 02:35. Control center received tank creep alarms and contacted field operations personnel to investigate. At approximately 06:25 field personnel discovered release from tank 15 mixer area. Additional field personnel and resources were dispatched to location while tank 15 was pumped out to below tank mixer level to stop release. All free crude oil was recovered via vacuum truck and contaminated soil was remediated on site. Total volume released was 700 barrels. Approximately 250 barrels were recovered. An estimated 145 barrels was entrained in the soil and an estimated 305 barrels volitalized. It was determined in the field that the mixer assembly had failed causing the release of crude oil from the tank. The mixer assembly was removed and sent for 3rd party failure analysis. Analysis concluded that the cause was the failure of the upper c-clip of the mixer motor assembly, causing excessive vibration and ultimate failure of the mixer hinge. Other mixers of same design and manufacturer in the splp system have been inspected and repaired or retrofitted with manufacturer hinge pin replacement kits. |
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