Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2018-08-12 — TX
Operator
Enterprise Crude Pipeline Llc
Cause
Corrosion Failure
Commodity
Crude Oil
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$1,680,567
Incident datetime
2018-08-12 22:02
Report number
Location
TX
Narrative
On august 12 during unloading at our freeport terminal the hazardous gas alarms occurred at 21:51. Local operations personnel viewed the site remotely via camera and confirmed crude oil inside the meter bank area and immediately initiated shutdown of the off-loading operation followed by a facility shut down. The leak source was identified downstream of the manifold inside the containment area. This line has been removed from service. The cause of this release in being investigated and a supplemental report will be provided once more information is received. Update (11/8/2018): the freeport marine terminal was discharging crude oil from ship, maran atlas, which was docked on berth two. At 2159, a local hazardous gas alarm was set off at freeport marine terminal. At 2201, a second hazardous gas alarm was set off at houston control center. At 2202, the freeport operator paned over the meter bank containment with the surveillance camera, and noticed a possible leak had occurred. At the same time, houston control center ran pressure trends and compared flow rates and noticed a pressure drop occurred at 2151. The pressure swing is normal during unloading of a vessel and no alarms related to the pressure drop were triggered. At 2204, houston control center contacted the freeport marine terminal to discuss potential discharging issues that were identified during a review of the pressure and flow rate trends. At 2204, freeport marine terminal was shut down. The metallurgical analysis combined with the internal incident investigation determined that the hydrocarbon and sediment deposits combined with the operational dead leg service condition of the pipe line allowed accelerated internal corrosion to occur. To prevent reoccurrence, we will perform a facility assessment to identify all existing operational dead legs. Incorporate all identified dead legs into the existing freeport marine facility flush plan. Pipe line sections that cannot be adequately flushed will be either idled or abandoned. Note: original nrc #1221348, 48 hour update nrc# 1221531
Detailed record list
Report Received Date
2018-09-10 00:00:00
Iyear
2018
Report Number
20180274
Supplemental Number
31153
Report Type
Supplemental Final
Operator Id
30829
Name
Enterprise Crude Pipeline Llc
Operator Street Address
1100 Louisiana Street
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Local Datetime
2018-08-12 21:51:00
Location Latitude
28.935772
Location Longitude
-95.320583
Commodity Released Type
Crude Oil
Unintentional Release Bbls
4922
Recovered Bbls
4888
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
2018-08-12 22:02:00
System Part Involved
Onshore Terminal/tank Farm Equipment And Piping
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2018-08-12 22:04:00
Restart Datetime
2018-09-05 12:54:00
On Site Datetime
2018-08-12 23:35:00
Nrc Rpt Datetime
2018-08-12 23:04:00
Nrc Rpt Num
1221348
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Freeport Terminal
Segment Name
Downstream Of Mov3a01
Onshore State Abbreviation
Tx
Onshore Postal Code
77541
Onshore City Name
Freeport
Onshore County Name
Brazoria
Designated Location
Survey Station No.
Designated Name
Freeport
Federal
No
Location Type
Originated On Operator-Controlled Property, But Then Flowed Or Migrated Off The Property
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
60
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Pipe
Pipe Type
Pipe Body
Pipe Diameter
36
Pipe Wall Thickness
0.375
Pipe Smys
42000
Pipe Specification
Api-5l
Pipe Seam Type
Dsaw
Pipe Manufacturer
Unknown
Pipe Coating Type
Fusion Bonded Epoxy(Fbe)
Installation Year
1995
Manufactured Year
1995
Material Involved
Carbon Steel
Release Type
Rupture
Rupture Orient
Longitudinal
Rupture Width
5.2
Rupture Length
21
Wildlife Impact Ind
No
Soil Contamination
Yes
Long Term Assessment
No
Remediation Ind
No
Water Contam Ind
Yes
Ocean Seawater Ind
Yes
Amount Released
5
Rel Water Name
Brazos Harbor
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
Other Pop Ind
Yes
Other Pop Yes No
Yes
Usa Drinking Ind
Yes
Usa Drinking Yes No
Yes
Usa Ecological Ind
Yes
Usa Ecological Yes No
Yes
Est Cost Oper Paid
419985
Est Cost Gas Released
90000
Est Cost Prop Damage
1680567
Est Cost Emergency
1611159
Est Cost Environmental
562654
Est Cost Other
341926
Est Cost Other Details
Company Labor, Meals, Security, Water
Prpty
4706291
Accident Psig
110
Mop Psig
275
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
Yes
Cpm Operating Ind
Yes
Cpm Functional Ind
Yes
Cpm Detection Ind
Yes
Cpm Conf Ind
Yes
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
Controller nor control room were a contributing factor
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Corrosion Failure
Cause Details
Internal Corrosion
Internal External
Internal Corrosion
Int Visual Exam Results
General Corrosion
Int Corrosive Commodity Ind
Yes
Int Metallurgical Basis Ind
Yes
Int Low Point Pipe Loc Ind
Yes
Corrosion Inhibitors
No
Corrosion Lining
No
Cleaning Dewatering
Not Applicable - Not Mainline Pipe
Corrosion Coupons
Not Applicable - Not Mainline Pipe
Collected Data Ind
No
Has Hydrtst Conduc Before Ind
No
Direct Asmnt Conducted
No
Non Destructive Exam Ind
No
Preparer Name
L**** W*******
Preparer Title
Pipeline Compliance Senior Engineer
Preparer Email
L*********@e****.com
Preparer Telephone
713-381-6748
Prepared Date
2018-11-08 00:00:00
Authorizer Name
S**** D****
Authorizer Telephone
713-381-5585
Authorizer Title
Pipeline Compliance Manager
Authorizer Email
S******@e****.com
Narrative
On august 12 during unloading at our freeport terminal the hazardous gas alarms occurred at 21:51. Local operations personnel viewed the site remotely via camera and confirmed crude oil inside the meter bank area and immediately initiated shutdown of the off-loading operation followed by a facility shut down. The leak source was identified downstream of the manifold inside the containment area. This line has been removed from service. The cause of this release in being investigated and a supplemental report will be provided once more information is received. Update (11/8/2018): the freeport marine terminal was discharging crude oil from ship, maran atlas, which was docked on berth two. At 2159, a local hazardous gas alarm was set off at freeport marine terminal. At 2201, a second hazardous gas alarm was set off at houston control center. At 2202, the freeport operator paned over the meter bank containment with the surveillance camera, and noticed a possible leak had occurred. At the same time, houston control center ran pressure trends and compared flow rates and noticed a pressure drop occurred at 2151. The pressure swing is normal during unloading of a vessel and no alarms related to the pressure drop were triggered. At 2204, houston control center contacted the freeport marine terminal to discuss potential discharging issues that were identified during a review of the pressure and flow rate trends. At 2204, freeport marine terminal was shut down. The metallurgical analysis combined with the internal incident investigation determined that the hydrocarbon and sediment deposits combined with the operational dead leg service condition of the pipe line allowed accelerated internal corrosion to occur. To prevent reoccurrence, we will perform a facility assessment to identify all existing operational dead legs. Incorporate all identified dead legs into the existing freeport marine facility flush plan. Pipe line sections that cannot be adequately flushed will be either idled or abandoned. Note: original nrc #1221348, 48 hour update nrc# 1221531
| Report Received Date | 2018-09-10 00:00:00 |
|---|---|
| Iyear | 2018 |
| Report Number | 20180274 |
| Supplemental Number | 31153 |
| Report Type | Supplemental Final |
| Operator Id | 30829 PHMSA Enforcement |
| Name | Enterprise Crude Pipeline Llc |
| Operator Street Address | 1100 Louisiana Street |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77002 |
| Local Datetime | 2018-08-12 21:51:00 |
| Location Latitude | 28.935772 Google Maps OpenStreetMap |
| Location Longitude | -95.320583 Google Maps OpenStreetMap |
| Commodity Released Type | Crude Oil |
| Unintentional Release Bbls | 4922 |
| Recovered Bbls | 4888 |
| 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 | 2018-08-12 22:02:00 |
| System Part Involved | Onshore Terminal/tank Farm Equipment And Piping |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2018-08-12 22:04:00 |
| Restart Datetime | 2018-09-05 12:54:00 |
| On Site Datetime | 2018-08-12 23:35:00 |
| Nrc Rpt Datetime | 2018-08-12 23:04:00 |
| Nrc Rpt Num | 1221348 NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Freeport Terminal |
| Segment Name | Downstream Of Mov3a01 |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 77541 |
| Onshore City Name | Freeport |
| Onshore County Name | Brazoria |
| Designated Location | Survey Station No. |
| Designated Name | Freeport |
| Federal | No |
| Location Type | Originated On Operator-Controlled Property, But Then Flowed Or Migrated Off The Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 60 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Pipe Diameter | 36 |
| Pipe Wall Thickness | 0.375 |
| Pipe Smys | 42000 |
| Pipe Specification | Api-5l |
| Pipe Seam Type | Dsaw |
| Pipe Manufacturer | Unknown |
| Pipe Coating Type | Fusion Bonded Epoxy(Fbe) |
| Installation Year | 1995 |
| Manufactured Year | 1995 |
| Material Involved | Carbon Steel |
| Release Type | Rupture |
| Rupture Orient | Longitudinal |
| Rupture Width | 5.2 |
| Rupture Length | 21 |
| Wildlife Impact Ind | No |
| Soil Contamination | Yes |
| Long Term Assessment | No |
| Remediation Ind | No |
| Water Contam Ind | Yes |
| Ocean Seawater Ind | Yes |
| Amount Released | 5 |
| Rel Water Name | Brazos Harbor |
| 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 |
| Other Pop Ind | Yes |
| Other Pop Yes No | Yes |
| Usa Drinking Ind | Yes |
| Usa Drinking Yes No | Yes |
| Usa Ecological Ind | Yes |
| Usa Ecological Yes No | Yes |
| Est Cost Oper Paid | 419985 |
| Est Cost Gas Released | 90000 |
| Est Cost Prop Damage | 1680567 |
| Est Cost Emergency | 1611159 |
| Est Cost Environmental | 562654 |
| Est Cost Other | 341926 |
| Est Cost Other Details | Company Labor, Meals, Security, Water |
| Prpty | 4706291 |
| Accident Psig | 110 |
| Mop Psig | 275 |
| 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 | Yes |
| Cpm Operating Ind | Yes |
| Cpm Functional Ind | Yes |
| Cpm Detection Ind | Yes |
| Cpm Conf Ind | Yes |
| 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 | Controller nor control room were a contributing factor |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Corrosion Failure |
| Cause Details | Internal Corrosion |
| Internal External | Internal Corrosion |
| Int Visual Exam Results | General Corrosion |
| Int Corrosive Commodity Ind | Yes |
| Int Metallurgical Basis Ind | Yes |
| Int Low Point Pipe Loc Ind | Yes |
| Corrosion Inhibitors | No |
| Corrosion Lining | No |
| Cleaning Dewatering | Not Applicable - Not Mainline Pipe |
| Corrosion Coupons | Not Applicable - Not Mainline Pipe |
| Collected Data Ind | No |
| Has Hydrtst Conduc Before Ind | No |
| Direct Asmnt Conducted | No |
| Non Destructive Exam Ind | No |
| Preparer Name | L**** W******* |
| Preparer Title | Pipeline Compliance Senior Engineer |
| Preparer Email | L*********@e****.com |
| Preparer Telephone | 713-381-6748 |
| Prepared Date | 2018-11-08 00:00:00 |
| Authorizer Name | S**** D**** |
| Authorizer Telephone | 713-381-5585 |
| Authorizer Title | Pipeline Compliance Manager |
| Authorizer Email | S******@e****.com |
| Narrative | On august 12 during unloading at our freeport terminal the hazardous gas alarms occurred at 21:51. Local operations personnel viewed the site remotely via camera and confirmed crude oil inside the meter bank area and immediately initiated shutdown of the off-loading operation followed by a facility shut down. The leak source was identified downstream of the manifold inside the containment area. This line has been removed from service. The cause of this release in being investigated and a supplemental report will be provided once more information is received. Update (11/8/2018): the freeport marine terminal was discharging crude oil from ship, maran atlas, which was docked on berth two. At 2159, a local hazardous gas alarm was set off at freeport marine terminal. At 2201, a second hazardous gas alarm was set off at houston control center. At 2202, the freeport operator paned over the meter bank containment with the surveillance camera, and noticed a possible leak had occurred. At the same time, houston control center ran pressure trends and compared flow rates and noticed a pressure drop occurred at 2151. The pressure swing is normal during unloading of a vessel and no alarms related to the pressure drop were triggered. At 2204, houston control center contacted the freeport marine terminal to discuss potential discharging issues that were identified during a review of the pressure and flow rate trends. At 2204, freeport marine terminal was shut down. The metallurgical analysis combined with the internal incident investigation determined that the hydrocarbon and sediment deposits combined with the operational dead leg service condition of the pipe line allowed accelerated internal corrosion to occur. To prevent reoccurrence, we will perform a facility assessment to identify all existing operational dead legs. Incorporate all identified dead legs into the existing freeport marine facility flush plan. Pipe line sections that cannot be adequately flushed will be either idled or abandoned. Note: original nrc #1221348, 48 hour update nrc# 1221531 |
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