Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2011-08-13 — TX
Operator
Enterprise Products Operating Llc
Cause
Natural Force Damage
Commodity
Refined And/or Petroleum Product (Non-Hvl) Which Is A Liquid At Ambient Conditions
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$7,368,470
Incident datetime
2011-08-13 02:16
Report number
Location
TX
Narrative
The downstream pump closest to the failure automatically shutdown on under speed, and the operations controller detected a pressure drop at the same pump station. The controller shutdown upstream pump stations and closed upstream block valves, and after downstream pump stations pulled down the line pressure, the mov at the closest downstream pump station was closed to isolate the failed pipeline segment. The controller notified company personnel and county sheriff offices on both sides of the river. The controller then blocked in and bled down the pressure on the second company operated pipeline in the row. When field operations personnel arrived at the river between 3:00 and 4:00 am, product could not be seen or smelled on the west side, and product could not be seen but could be smelled in the vicinity of aerial marker 271 on the east side of the river. Both the failed line, and the line next to it operated by the operator remain shutdown under corrective action order, cf no. 3-2011-5009h. Divers located a break in the failed line on august 31, but the failure site is still underwater and inaccessible at the time of this report. The product released was natural gasoline, but no released product has been detected other than an odor on first arrival at the east side of the river. The initial volume reported was the line volume estimated between block valves. Most of the product trapped in isolated pipe has since been displaced from the line and was metered. The displaced volume was subtracted from the line fill volume, reducing the estimated unintended release volume. Product in the pipe near the west bank of the river is still not completely displaced. Supplement 6-1-12 the red was restarted on october 22, 2011. Installation of the red lines according to the approved repair plan was completed on january 16, 2012 with the completion of the main line valve motor operator work the amount of natural gasoline displaced from the red line on september 7, 2011 was metered and measured 2952.3 bbl. Approximately 507 gallons of additional natural gasoline was displaced september 28, 2011 and an additional 68 gallons of product was displaced from the red line on october 8, 2011. Pipe segments from both sides of the red line break have been removed from under water. Displacement of residual product with nitrogen was completed on april 11, 2012. The recovered amount of product from this displacement was 129 bbls. The total displacement of natural gasoline to date from the pipeline reduces the estimated release volume to 675 bbls. After the displacement the remaining sections of the affected pipe that could not be removed were either capped and abandoned or capped and placed in an idle state according to the submitted repair plan. Supplement/final 8-7-12 the metallurgical report was completed on july 2, 2012. There were no defects attributed to orginal construction/installation. The failure analysis indicated that the failure occurred because of the stresses associated with the flooding condition.
Detailed record list
Report Received Date
2011-09-10 00:00:00
Iyear
2011
Report Number
20110335
Supplemental Number
18081
Report Type
Supplemental Final
Operator Id
31618
Name
Enterprise Products Operating Llc
Operator Street Address
1100 Louisiana Street
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Local Datetime
2011-08-13 01:57:00
Location Latitude
42.00461
Location Longitude
-96.23684
Commodity Released Type
Refined And/or Petroleum Product (Non-Hvl) Which Is A Liquid At Ambient Conditions
Commodity Subtype
Other
Commodity Details
Natural Gasoline
Unintentional Release Bbls
675
Intentional Release Bbls
0
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Controller
Operator Type
Operator Employee
Incident Identified Datetime
2011-08-13 02:16:00
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2011-08-13 02:19:00
Restart Datetime
2011-10-22 10:02:00
On Site Datetime
2011-08-13 03:30:00
Nrc Rpt Datetime
2011-08-13 04:23:00
Nrc Rpt Num
985803
Ignite Ind
No
Explode Ind
No
Upstream Valve Type Ind
Remotely Controlled
Downstream Valve Type Ind
Remotely Controlled
Num Pub Evacuated
0
Pipe Fac Name
West Leg Loop Red Line
Segment Name
Line Id 428
Onshore State Abbreviation
Ia
Onshore Postal Code
51040
Onshore City Name
Onawa
Onshore County Name
Monona
Designated Location
Survey Station No.
Designated Name
14293+63
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Other
Incident Area Details
Exposed By Flood Water Scour
Crossing
Yes
Water Crossing Ind
Yes
Water Type
Uncased
Water Name
Missouri River Flood Plain
Water Depth
15
Water Subtype
Shoreline/bank Crossing
Pipe Facility Type
Interstate
Item Involved
Weld, Including Heat-Affected Zone
Pipe Diameter
8
Pipe Wall Thickness
0.172
Pipe Smys
60000
Pipe Specification
Api5l
Pipe Seam Type
Erw - High Frequency
Pipe Manufacturer
Ipsco Steel
Pipe Coating Type
Cold Applied Tape
Weld Subtype
Pipe Girth Weld
Installation Year
1993
Manufactured Year
1993
Material Involved
Carbon Steel
Release Type
Rupture
Rupture Orient
Circumferential
Rupture Width
2.1
Rupture Length
4.9
Wildlife Impact Ind
No
Soil Contamination
No
Long Term Assessment
No
Remediation Ind
No
Water Contam Ind
Yes
Surface Contam Ind
Yes
Amount Released
675
Rel Water Name
Missouririver
Could Be Hca
Yes
Commodity Reached Hca
Yes
Commercially Nav Ind
Yes
Commercially Nav Yes No
Yes
Other Pop Ind
Yes
Other Pop Yes No
Yes
Usa Drinking Ind
Yes
Usa Drinking Yes No
No
Est Cost Oper Paid
0
Est Cost Gas Released
80595
Est Cost Prop Damage
7368470
Est Cost Emergency
135000
Est Cost Environmental
85000
Est Cost Other
0
Prpty
7669065
Accident Psig
255
Mop Psig
1440
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
56045
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
Yes
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
Yes, specify investigation result(s): (select all that apply)
Invest Schedule Ind
Yes
Invest No Control Room Ind
Yes
Invest No Controller Ind
Yes
Employee Drug Test Ind
Yes
Contractor Drug Test Ind
No
Num Employees Tested
1
Num Employees Failed
0
Cause
Natural Force Damage
Cause Details
Heavy Rains/floods
Natural Force Type
Heavy Rains/floods
Heavy Rains Subtype
Washouts/scouring
Nf Extreme Weather Ind
Yes
Nf Other Ind
Yes
Nf Extreme Weather Details
Prolonged Flooding Of The Missouri River
Preparer Name
M****** S********
Preparer Title
Sr. Pipeline Compliance Specialist
Preparer Email
M*********@e****.com
Preparer Telephone
713-381-8209
Preparer Fax
713-381-6660
Prepared Date
2013-05-20 00:00:00
Authorizer Name
M****** S********
Authorizer Telephone
713-381-8209
Authorizer Title
Sr. Pipeline Compliance Specialist
Authorizer Email
M*********@e****.com
Narrative
The downstream pump closest to the failure automatically shutdown on under speed, and the operations controller detected a pressure drop at the same pump station. The controller shutdown upstream pump stations and closed upstream block valves, and after downstream pump stations pulled down the line pressure, the mov at the closest downstream pump station was closed to isolate the failed pipeline segment. The controller notified company personnel and county sheriff offices on both sides of the river. The controller then blocked in and bled down the pressure on the second company operated pipeline in the row. When field operations personnel arrived at the river between 3:00 and 4:00 am, product could not be seen or smelled on the west side, and product could not be seen but could be smelled in the vicinity of aerial marker 271 on the east side of the river. Both the failed line, and the line next to it operated by the operator remain shutdown under corrective action order, cf no. 3-2011-5009h. Divers located a break in the failed line on august 31, but the failure site is still underwater and inaccessible at the time of this report. The product released was natural gasoline, but no released product has been detected other than an odor on first arrival at the east side of the river. The initial volume reported was the line volume estimated between block valves. Most of the product trapped in isolated pipe has since been displaced from the line and was metered. The displaced volume was subtracted from the line fill volume, reducing the estimated unintended release volume. Product in the pipe near the west bank of the river is still not completely displaced. Supplement 6-1-12 the red was restarted on october 22, 2011. Installation of the red lines according to the approved repair plan was completed on january 16, 2012 with the completion of the main line valve motor operator work the amount of natural gasoline displaced from the red line on september 7, 2011 was metered and measured 2952.3 bbl. Approximately 507 gallons of additional natural gasoline was displaced september 28, 2011 and an additional 68 gallons of product was displaced from the red line on october 8, 2011. Pipe segments from both sides of the red line break have been removed from under water. Displacement of residual product with nitrogen was completed on april 11, 2012. The recovered amount of product from this displacement was 129 bbls. The total displacement of natural gasoline to date from the pipeline reduces the estimated release volume to 675 bbls. After the displacement the remaining sections of the affected pipe that could not be removed were either capped and abandoned or capped and placed in an idle state according to the submitted repair plan. Supplement/final 8-7-12 the metallurgical report was completed on july 2, 2012. There were no defects attributed to orginal construction/installation. The failure analysis indicated that the failure occurred because of the stresses associated with the flooding condition.
| Report Received Date | 2011-09-10 00:00:00 |
|---|---|
| Iyear | 2011 |
| Report Number | 20110335 |
| Supplemental Number | 18081 |
| Report Type | Supplemental Final |
| Operator Id | 31618 PHMSA Enforcement |
| Name | Enterprise Products Operating Llc |
| Operator Street Address | 1100 Louisiana Street |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77002 |
| Local Datetime | 2011-08-13 01:57:00 |
| Location Latitude | 42.00461 Google Maps OpenStreetMap |
| Location Longitude | -96.23684 Google Maps OpenStreetMap |
| Commodity Released Type | Refined And/or Petroleum Product (Non-Hvl) Which Is A Liquid At Ambient Conditions |
| Commodity Subtype | Other |
| Commodity Details | Natural Gasoline |
| Unintentional Release Bbls | 675 |
| Intentional Release Bbls | 0 |
| Recovered Bbls | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Controller |
| Operator Type | Operator Employee |
| Incident Identified Datetime | 2011-08-13 02:16:00 |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2011-08-13 02:19:00 |
| Restart Datetime | 2011-10-22 10:02:00 |
| On Site Datetime | 2011-08-13 03:30:00 |
| Nrc Rpt Datetime | 2011-08-13 04:23:00 |
| Nrc Rpt Num | 985803 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 | 0 |
| Pipe Fac Name | West Leg Loop Red Line |
| Segment Name | Line Id 428 |
| Onshore State Abbreviation | Ia |
| Onshore Postal Code | 51040 |
| Onshore City Name | Onawa |
| Onshore County Name | Monona |
| Designated Location | Survey Station No. |
| Designated Name | 14293+63 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Other |
| Incident Area Details | Exposed By Flood Water Scour |
| Crossing | Yes |
| Water Crossing Ind | Yes |
| Water Type | Uncased |
| Water Name | Missouri River Flood Plain |
| Water Depth | 15 |
| Water Subtype | Shoreline/bank Crossing |
| Pipe Facility Type | Interstate |
| Item Involved | Weld, Including Heat-Affected Zone |
| Pipe Diameter | 8 |
| Pipe Wall Thickness | 0.172 |
| Pipe Smys | 60000 |
| Pipe Specification | Api5l |
| Pipe Seam Type | Erw - High Frequency |
| Pipe Manufacturer | Ipsco Steel |
| Pipe Coating Type | Cold Applied Tape |
| Weld Subtype | Pipe Girth Weld |
| Installation Year | 1993 |
| Manufactured Year | 1993 |
| Material Involved | Carbon Steel |
| Release Type | Rupture |
| Rupture Orient | Circumferential |
| Rupture Width | 2.1 |
| Rupture Length | 4.9 |
| Wildlife Impact Ind | No |
| Soil Contamination | No |
| Long Term Assessment | No |
| Remediation Ind | No |
| Water Contam Ind | Yes |
| Surface Contam Ind | Yes |
| Amount Released | 675 |
| Rel Water Name | Missouririver |
| Could Be Hca | Yes |
| Commodity Reached Hca | Yes |
| Commercially Nav Ind | Yes |
| Commercially Nav Yes No | Yes |
| Other Pop Ind | Yes |
| Other Pop Yes No | Yes |
| Usa Drinking Ind | Yes |
| Usa Drinking Yes No | No |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 80595 |
| Est Cost Prop Damage | 7368470 |
| Est Cost Emergency | 135000 |
| Est Cost Environmental | 85000 |
| Est Cost Other | 0 |
| Prpty | 7669065 |
| Accident Psig | 255 |
| Mop Psig | 1440 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 56045 |
| 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 | Yes |
| 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 | Yes, specify investigation result(s): (select all that apply) |
| Invest Schedule Ind | Yes |
| Invest No Control Room Ind | Yes |
| Invest No Controller Ind | Yes |
| Employee Drug Test Ind | Yes |
| Contractor Drug Test Ind | No |
| Num Employees Tested | 1 |
| Num Employees Failed | 0 |
| Cause | Natural Force Damage |
| Cause Details | Heavy Rains/floods |
| Natural Force Type | Heavy Rains/floods |
| Heavy Rains Subtype | Washouts/scouring |
| Nf Extreme Weather Ind | Yes |
| Nf Other Ind | Yes |
| Nf Extreme Weather Details | Prolonged Flooding Of The Missouri River |
| Preparer Name | M****** S******** |
| Preparer Title | Sr. Pipeline Compliance Specialist |
| Preparer Email | M*********@e****.com |
| Preparer Telephone | 713-381-8209 |
| Preparer Fax | 713-381-6660 |
| Prepared Date | 2013-05-20 00:00:00 |
| Authorizer Name | M****** S******** |
| Authorizer Telephone | 713-381-8209 |
| Authorizer Title | Sr. Pipeline Compliance Specialist |
| Authorizer Email | M*********@e****.com |
| Narrative | The downstream pump closest to the failure automatically shutdown on under speed, and the operations controller detected a pressure drop at the same pump station. The controller shutdown upstream pump stations and closed upstream block valves, and after downstream pump stations pulled down the line pressure, the mov at the closest downstream pump station was closed to isolate the failed pipeline segment. The controller notified company personnel and county sheriff offices on both sides of the river. The controller then blocked in and bled down the pressure on the second company operated pipeline in the row. When field operations personnel arrived at the river between 3:00 and 4:00 am, product could not be seen or smelled on the west side, and product could not be seen but could be smelled in the vicinity of aerial marker 271 on the east side of the river. Both the failed line, and the line next to it operated by the operator remain shutdown under corrective action order, cf no. 3-2011-5009h. Divers located a break in the failed line on august 31, but the failure site is still underwater and inaccessible at the time of this report. The product released was natural gasoline, but no released product has been detected other than an odor on first arrival at the east side of the river. The initial volume reported was the line volume estimated between block valves. Most of the product trapped in isolated pipe has since been displaced from the line and was metered. The displaced volume was subtracted from the line fill volume, reducing the estimated unintended release volume. Product in the pipe near the west bank of the river is still not completely displaced. Supplement 6-1-12 the red was restarted on october 22, 2011. Installation of the red lines according to the approved repair plan was completed on january 16, 2012 with the completion of the main line valve motor operator work the amount of natural gasoline displaced from the red line on september 7, 2011 was metered and measured 2952.3 bbl. Approximately 507 gallons of additional natural gasoline was displaced september 28, 2011 and an additional 68 gallons of product was displaced from the red line on october 8, 2011. Pipe segments from both sides of the red line break have been removed from under water. Displacement of residual product with nitrogen was completed on april 11, 2012. The recovered amount of product from this displacement was 129 bbls. The total displacement of natural gasoline to date from the pipeline reduces the estimated release volume to 675 bbls. After the displacement the remaining sections of the affected pipe that could not be removed were either capped and abandoned or capped and placed in an idle state according to the submitted repair plan. Supplement/final 8-7-12 the metallurgical report was completed on july 2, 2012. There were no defects attributed to orginal construction/installation. The failure analysis indicated that the failure occurred because of the stresses associated with the flooding condition. |
External Resources
PHMSA pipeline safety insights.
Product
Features
Company
All rights reserved. Copyright © by ClearPHMSA