Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2013-08-12 — TX
Operator
Enterprise Products Operating Llc
Cause
Material Failure Of Pipe Or Weld
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)
$200,000
Incident datetime
2013-08-12 23:16
Report number
Location
TX
Narrative
At 23:16 on august 12, 2013 willow station pump went down on low suction pressure and scada indicated a significant drop in pressure. The controller suspected a leak and notified the iowa station operator to shut down the pumps. Local operations personnel were notified and placed on standby once the location was confirmed. At 23:58, a farmer reported a fire in his field near aerial marker (am) 76 / milepost (mp) 16. Operations personnel were immediately dispatched to the area. The controller blocked in the movs at am 115 / mp 55 and am 177 / mp 116. Local operations personnel closed manual block valves at am 71 / mp 11, am 86 / mp 26 and am 87 / mp 27. A 1-mile safety buffer was established around the leak site, traffic was blocked and all homes were evacuated within the buffer zone. At 02:35 on 8/13/2013, local operations personnel were able to get closer to the leak site and closed the block valve at am 76 / mp 16. This isolated the leaking segment between am 76 / mp 16 and am 86 / mp 26. The area was secured and preserved for examination by a third-party. Affected pipe was cut out and sent in for metallurgical analysis along with the pieces that were collected. The affected pipeline segment was replaced and the pipeline was returned to service on 8/17/2013. =================notes============================ through a review of scada data, the time of the accident was later determined to be at 23:10 on august 12, 2013 as indicated by a rapid pressure drop on the line pressure and discharge pressure at willow station. The evacuation of the general public was carried out by local emergency officials. The response provided in part a question 17 is the number of homes that were evacuated. The exact number of people evacuated cannot be verified. Soil contamination: fourteen samples were collected from the rupture site, including the depression, only one sample analysis exhibited benzene results. The benzene detected in this sample did not exceed regulatory (il epa) soil standards and the origins of the detection have not been confirmed to be resulting from this release. Groundwater contamination: one groundwater sample was collected from the depression, this sample analysis exhibited btex (benzene, toluene, ethyl benzene, xylene) results above the regulatory (il epa) groundwater standards and the origins of the detection has not been confirmed to be resulting from this release. =================metallurgical analysis================== results from the metallurgical analysis identified the failure was caused by a defect that formed in the longitudinal erw seam of the pipe. The defect was a combination of two flaws: an external surface-breaking hook crack and a crack that formed at the base of the hook crack and enlarged over time while the pipe was in service. The hook crack was a manufacturing defect that formed when the pipe was manufactured. Fractographic and metallographic examination was unable to conclusively determine the cause of the in-service flaw growth. ===================8/15/2014 update=============== part c #6. The length and width of the rupture opening represents the nominal od and the gap between the ends of the pipe.
Detailed record list
Report Received Date
2013-09-10 00:00:00
Iyear
2013
Report Number
20130307
Supplemental Number
20452
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
2013-08-12 23:10:00
Location Latitude
41.697667
Location Longitude
-90.098627
Commodity Released Type
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Commodity Subtype
Other Hvl
Commodity Details
Ethane/propane Mix
Unintentional Release Bbls
18400
Intentional Release Bbls
0
Recovered Bbls
0
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
2013-08-12 23:16:00
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2013-08-12 23:16:00
Restart Datetime
2013-08-17 20:33:00
On Site Datetime
2013-08-13 01:03:00
Nrc Rpt Datetime
2013-08-13 00:17:00
Nrc Rpt Num
1056922
Ignite Ind
Yes
Explode Ind
Yes
Upstream Valve Type Ind
Remotely Controlled
Downstream Valve Type Ind
Remotely Controlled
Num Pub Evacuated
32
Pipe Fac Name
Mapl East Leg - Morris Lateral
Segment Name
Lid 624
Onshore State Abbreviation
Il
Onshore Postal Code
61250
Onshore City Name
Erie
Onshore County Name
Whiteside
Designated Location
Milepost/valve Station
Designated Name
Milepost 16.2
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
48
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Pipe
Pipe Type
Pipe Seam
Pipe Diameter
10
Pipe Wall Thickness
0.188
Pipe Smys
52000
Pipe Specification
Api 5l
Pipe Seam Type
Erw - High Frequency
Pipe Manufacturer
American Steel
Pipe Coating Type
Cold Applied Tape
Installation Year
1973
Manufactured Year
1973
Material Involved
Carbon Steel
Release Type
Rupture
Rupture Orient
Longitudinal
Rupture Width
10
Rupture Length
393
Wildlife Impact Ind
No
Soil Contamination
Yes
Long Term Assessment
Yes
Remediation Ind
Yes
Groundwater Remed Ind
Yes
Soil Remed Ind
Yes
Water Contam Ind
Yes
Groundwater Contam Ind
Yes
Amount Released
0
Rel Water Name
Perched Water Bearing Zone.
Could Be Hca
No
Commodity Reached Hca
No
Est Cost Oper Paid
50000
Est Cost Gas Released
160000
Est Cost Prop Damage
200000
Est Cost Emergency
5000
Est Cost Environmental
50000
Est Cost Other
50000
Est Cost Other Details
Metallurgical Analysis Of Failure Pipe
Prpty
515000
Accident Psig
1207
Mop Psig
1307
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
322080
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
Material Failure Of Pipe Or Weld
Cause Details
Original Manufacturing-Related (Not Girth Weld Or Other Welds Formed In The Field)
Metallurgical Ind
Yes
Failure Type
Original Manufacturing-Related (Not Girth Weld Or Other Welds Formed In The Field)
Fatigue Vibr Related
Yes
Failure Subtype
Pressure-Related
Other Factor
Yes
Other Factor Details
Environmental Cracking Such As Scc
Additional Crack Ind
Yes
Collected Data Ind
Yes
Emat Ind
Yes
Emat Recent Year
2005
Other Recent Year
2010
Has Hydrtst Conduc Before Ind
Yes
Hydrtst Most Rcnt Year
1986
Hydrtst Most Rcnt Pressure
1741
Direct Asmnt Conducted
No
Non Destructive Exam Ind
No
Preparer Name
N*** T*****
Preparer Title
Senior Compliance Engineer
Preparer Email
N*******@e****.com
Preparer Telephone
7133812493
Prepared Date
2015-05-18 00:00:00
Authorizer Name
N*** T*****
Authorizer Telephone
713-381-2493
Authorizer Title
Senior Compliance Engineer
Authorizer Email
N*******@e****.com
Narrative
At 23:16 on august 12, 2013 willow station pump went down on low suction pressure and scada indicated a significant drop in pressure. The controller suspected a leak and notified the iowa station operator to shut down the pumps. Local operations personnel were notified and placed on standby once the location was confirmed. At 23:58, a farmer reported a fire in his field near aerial marker (am) 76 / milepost (mp) 16. Operations personnel were immediately dispatched to the area. The controller blocked in the movs at am 115 / mp 55 and am 177 / mp 116. Local operations personnel closed manual block valves at am 71 / mp 11, am 86 / mp 26 and am 87 / mp 27. A 1-mile safety buffer was established around the leak site, traffic was blocked and all homes were evacuated within the buffer zone. At 02:35 on 8/13/2013, local operations personnel were able to get closer to the leak site and closed the block valve at am 76 / mp 16. This isolated the leaking segment between am 76 / mp 16 and am 86 / mp 26. The area was secured and preserved for examination by a third-party. Affected pipe was cut out and sent in for metallurgical analysis along with the pieces that were collected. The affected pipeline segment was replaced and the pipeline was returned to service on 8/17/2013. =================notes============================ through a review of scada data, the time of the accident was later determined to be at 23:10 on august 12, 2013 as indicated by a rapid pressure drop on the line pressure and discharge pressure at willow station. The evacuation of the general public was carried out by local emergency officials. The response provided in part a question 17 is the number of homes that were evacuated. The exact number of people evacuated cannot be verified. Soil contamination: fourteen samples were collected from the rupture site, including the depression, only one sample analysis exhibited benzene results. The benzene detected in this sample did not exceed regulatory (il epa) soil standards and the origins of the detection have not been confirmed to be resulting from this release. Groundwater contamination: one groundwater sample was collected from the depression, this sample analysis exhibited btex (benzene, toluene, ethyl benzene, xylene) results above the regulatory (il epa) groundwater standards and the origins of the detection has not been confirmed to be resulting from this release. =================metallurgical analysis================== results from the metallurgical analysis identified the failure was caused by a defect that formed in the longitudinal erw seam of the pipe. The defect was a combination of two flaws: an external surface-breaking hook crack and a crack that formed at the base of the hook crack and enlarged over time while the pipe was in service. The hook crack was a manufacturing defect that formed when the pipe was manufactured. Fractographic and metallographic examination was unable to conclusively determine the cause of the in-service flaw growth. ===================8/15/2014 update=============== part c #6. The length and width of the rupture opening represents the nominal od and the gap between the ends of the pipe.
| Report Received Date | 2013-09-10 00:00:00 |
|---|---|
| Iyear | 2013 |
| Report Number | 20130307 |
| Supplemental Number | 20452 |
| 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 | 2013-08-12 23:10:00 |
| Location Latitude | 41.697667 Google Maps OpenStreetMap |
| Location Longitude | -90.098627 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 | Ethane/propane Mix |
| Unintentional Release Bbls | 18400 |
| Intentional Release Bbls | 0 |
| Recovered Bbls | 0 |
| 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 | 2013-08-12 23:16:00 |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2013-08-12 23:16:00 |
| Restart Datetime | 2013-08-17 20:33:00 |
| On Site Datetime | 2013-08-13 01:03:00 |
| Nrc Rpt Datetime | 2013-08-13 00:17:00 |
| Nrc Rpt Num | 1056922 NRC Report How to search |
| Ignite Ind | Yes |
| Explode Ind | Yes |
| Upstream Valve Type Ind | Remotely Controlled |
| Downstream Valve Type Ind | Remotely Controlled |
| Num Pub Evacuated | 32 |
| Pipe Fac Name | Mapl East Leg - Morris Lateral |
| Segment Name | Lid 624 |
| Onshore State Abbreviation | Il |
| Onshore Postal Code | 61250 |
| Onshore City Name | Erie |
| Onshore County Name | Whiteside |
| Designated Location | Milepost/valve Station |
| Designated Name | Milepost 16.2 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 48 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Pipe |
| Pipe Type | Pipe Seam |
| Pipe Diameter | 10 |
| Pipe Wall Thickness | 0.188 |
| Pipe Smys | 52000 |
| Pipe Specification | Api 5l |
| Pipe Seam Type | Erw - High Frequency |
| Pipe Manufacturer | American Steel |
| Pipe Coating Type | Cold Applied Tape |
| Installation Year | 1973 |
| Manufactured Year | 1973 |
| Material Involved | Carbon Steel |
| Release Type | Rupture |
| Rupture Orient | Longitudinal |
| Rupture Width | 10 |
| Rupture Length | 393 |
| Wildlife Impact Ind | No |
| Soil Contamination | Yes |
| Long Term Assessment | Yes |
| Remediation Ind | Yes |
| Groundwater Remed Ind | Yes |
| Soil Remed Ind | Yes |
| Water Contam Ind | Yes |
| Groundwater Contam Ind | Yes |
| Amount Released | 0 |
| Rel Water Name | Perched Water Bearing Zone. |
| Could Be Hca | No |
| Commodity Reached Hca | No |
| Est Cost Oper Paid | 50000 |
| Est Cost Gas Released | 160000 |
| Est Cost Prop Damage | 200000 |
| Est Cost Emergency | 5000 |
| Est Cost Environmental | 50000 |
| Est Cost Other | 50000 |
| Est Cost Other Details | Metallurgical Analysis Of Failure Pipe |
| Prpty | 515000 |
| Accident Psig | 1207 |
| Mop Psig | 1307 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 322080 |
| 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 | Material Failure Of Pipe Or Weld |
| Cause Details | Original Manufacturing-Related (Not Girth Weld Or Other Welds Formed In The Field) |
| Metallurgical Ind | Yes |
| Failure Type | Original Manufacturing-Related (Not Girth Weld Or Other Welds Formed In The Field) |
| Fatigue Vibr Related | Yes |
| Failure Subtype | Pressure-Related |
| Other Factor | Yes |
| Other Factor Details | Environmental Cracking Such As Scc |
| Additional Crack Ind | Yes |
| Collected Data Ind | Yes |
| Emat Ind | Yes |
| Emat Recent Year | 2005 |
| Other Recent Year | 2010 |
| Has Hydrtst Conduc Before Ind | Yes |
| Hydrtst Most Rcnt Year | 1986 |
| Hydrtst Most Rcnt Pressure | 1741 |
| Direct Asmnt Conducted | No |
| Non Destructive Exam Ind | No |
| Preparer Name | N*** T***** |
| Preparer Title | Senior Compliance Engineer |
| Preparer Email | N*******@e****.com |
| Preparer Telephone | 7133812493 |
| Prepared Date | 2015-05-18 00:00:00 |
| Authorizer Name | N*** T***** |
| Authorizer Telephone | 713-381-2493 |
| Authorizer Title | Senior Compliance Engineer |
| Authorizer Email | N*******@e****.com |
| Narrative | At 23:16 on august 12, 2013 willow station pump went down on low suction pressure and scada indicated a significant drop in pressure. The controller suspected a leak and notified the iowa station operator to shut down the pumps. Local operations personnel were notified and placed on standby once the location was confirmed. At 23:58, a farmer reported a fire in his field near aerial marker (am) 76 / milepost (mp) 16. Operations personnel were immediately dispatched to the area. The controller blocked in the movs at am 115 / mp 55 and am 177 / mp 116. Local operations personnel closed manual block valves at am 71 / mp 11, am 86 / mp 26 and am 87 / mp 27. A 1-mile safety buffer was established around the leak site, traffic was blocked and all homes were evacuated within the buffer zone. At 02:35 on 8/13/2013, local operations personnel were able to get closer to the leak site and closed the block valve at am 76 / mp 16. This isolated the leaking segment between am 76 / mp 16 and am 86 / mp 26. The area was secured and preserved for examination by a third-party. Affected pipe was cut out and sent in for metallurgical analysis along with the pieces that were collected. The affected pipeline segment was replaced and the pipeline was returned to service on 8/17/2013. =================notes============================ through a review of scada data, the time of the accident was later determined to be at 23:10 on august 12, 2013 as indicated by a rapid pressure drop on the line pressure and discharge pressure at willow station. The evacuation of the general public was carried out by local emergency officials. The response provided in part a question 17 is the number of homes that were evacuated. The exact number of people evacuated cannot be verified. Soil contamination: fourteen samples were collected from the rupture site, including the depression, only one sample analysis exhibited benzene results. The benzene detected in this sample did not exceed regulatory (il epa) soil standards and the origins of the detection have not been confirmed to be resulting from this release. Groundwater contamination: one groundwater sample was collected from the depression, this sample analysis exhibited btex (benzene, toluene, ethyl benzene, xylene) results above the regulatory (il epa) groundwater standards and the origins of the detection has not been confirmed to be resulting from this release. =================metallurgical analysis================== results from the metallurgical analysis identified the failure was caused by a defect that formed in the longitudinal erw seam of the pipe. The defect was a combination of two flaws: an external surface-breaking hook crack and a crack that formed at the base of the hook crack and enlarged over time while the pipe was in service. The hook crack was a manufacturing defect that formed when the pipe was manufactured. Fractographic and metallographic examination was unable to conclusively determine the cause of the in-service flaw growth. ===================8/15/2014 update=============== part c #6. The length and width of the rupture opening represents the nominal od and the gap between the ends of the pipe. |
External Resources
PHMSA pipeline safety insights.
Product
Features
Company
All rights reserved. Copyright © by ClearPHMSA