Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2020-11-17 — TX
Operator
Enterprise Products Operating Llc
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)
$184,000
Incident datetime
2020-11-17 08:23
Report number
Location
TX
Narrative
On 11/17/2020 at 08:08 ct, houston control center (hcc) was contacted by an enterprise technician reporting that a third party observed vapor at linn station. Hcc shut down the pump units while the technician was in-route to the station. Once on site at 08:23 ct the technician discovered frost on the ground above lid 428 pipeline inside the station. At 08:34 ct houston control center reduced the pressure and isolated the pipeline. After discussions with operations and onsite technician, at 09:40 ct it was determined that the estimated repair cost would likely exceed the $50,000 reporting threshold for nrc. An estimated 25 gallons of propane leaked from the pipeline with 50 barrels flared from the line prior to the nitrogen purge allowing for excavation and repair. Once excavated a stopple split tee fitting was found to be the source of the leak and was cut out and replaced with 40 feet of pipe. The pipeline was returned to service on 11/22/2020 at 17:00 ct. Initial call to nrc was made on 11/17/2020 at 10:17 ct (nrc#1292452). The call was made based on repair cost estimates exceeding $50,000. 48hr update call to nrc was made on 11/19/2020 (nrc#1292636). The update provided an estimated product release of 25 gallons.
Detailed record list
Report Received Date
2020-12-14 00:00:00
Iyear
2020
Report Number
20200329
Supplemental Number
34723
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
2020-11-17 08:08:00
Location Latitude
39.63882
Location Longitude
-97.04227
Commodity Released Type
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Commodity Subtype
Lpg (Liquefied Petroleum Gas) / Ngl (Natural Gas Liquid)
Unintentional Release Bbls
0.6
Intentional Release Bbls
50
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Notification From Public
Incident Identified Datetime
2020-11-17 08:23:00
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2020-11-17 08:34:00
Restart Datetime
2020-11-22 17:00:00
On Site Datetime
2020-11-17 08:23:00
Nrc Rpt Datetime
2020-11-17 10:17:00
Nrc Rpt Num
1292452
Ignite Ind
No
Explode Ind
No
Upstream Valve Type Ind
Remotely Controlled
Downstream Valve Type Ind
Manual
Num Pub Evacuated
0
Pipe Fac Name
West Leg Loop
Segment Name
428
Onshore State Abbreviation
Ks
Onshore Postal Code
66953
Onshore City Name
Not Within A Municipality
Onshore County Name
Washington
Designated Location
Milepost/valve Station
Designated Name
Linn Station
Federal
No
Location Type
Totally Contained On Operator-Controlled Property
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
48
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Tap Fitting(Stopple, Thread-O-Ring, Weld-O-Let, Etc.)
Installation Year
Unknown
Material Involved
Material Other Than Carbon Steel
Material Details
Buna N O-Ring
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
No
Est Cost Oper Paid
0
Est Cost Gas Released
1120
Est Cost Prop Damage
184000
Est Cost Emergency
0
Est Cost Environmental
0
Est Cost Other
0
Prpty
185120
Accident Psig
1220
Mop Psig
1440
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
47857
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
Yes
Cpm Operating Ind
Yes
Cpm Functional Ind
Yes
Cpm Detection Ind
No
Cpm Conf 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
Pl controller did not contribute to the cause of this incident.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Non-Threaded Connection Failure
Eq Failure Type
Non-Threaded Connection Failure
Other Non Threaded Ind
O-Ring
Eq Additional Other Ind
Yes
Eq Additional Other Details
Deterioration Of The O-Ring
Preparer Name
H*** D***
Preparer Title
Sr. Pipeline Compliance Engineer
Preparer Email
H****@e****.com
Preparer Telephone
713-381-4277
Prepared Date
2021-01-14 00:00:00
Authorizer Name
H*** D***
Authorizer Telephone
713-381-4277
Authorizer Title
Sr. Pipeline Compliance Engineer
Authorizer Email
H****@e****.com
Narrative
On 11/17/2020 at 08:08 ct, houston control center (hcc) was contacted by an enterprise technician reporting that a third party observed vapor at linn station. Hcc shut down the pump units while the technician was in-route to the station. Once on site at 08:23 ct the technician discovered frost on the ground above lid 428 pipeline inside the station. At 08:34 ct houston control center reduced the pressure and isolated the pipeline. After discussions with operations and onsite technician, at 09:40 ct it was determined that the estimated repair cost would likely exceed the $50,000 reporting threshold for nrc. An estimated 25 gallons of propane leaked from the pipeline with 50 barrels flared from the line prior to the nitrogen purge allowing for excavation and repair. Once excavated a stopple split tee fitting was found to be the source of the leak and was cut out and replaced with 40 feet of pipe. The pipeline was returned to service on 11/22/2020 at 17:00 ct. Initial call to nrc was made on 11/17/2020 at 10:17 ct (nrc#1292452). The call was made based on repair cost estimates exceeding $50,000. 48hr update call to nrc was made on 11/19/2020 (nrc#1292636). The update provided an estimated product release of 25 gallons.
| Report Received Date | 2020-12-14 00:00:00 |
|---|---|
| Iyear | 2020 |
| Report Number | 20200329 |
| Supplemental Number | 34723 |
| 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 | 2020-11-17 08:08:00 |
| Location Latitude | 39.63882 Google Maps OpenStreetMap |
| Location Longitude | -97.04227 Google Maps OpenStreetMap |
| Commodity Released Type | Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions |
| Commodity Subtype | Lpg (Liquefied Petroleum Gas) / Ngl (Natural Gas Liquid) |
| Unintentional Release Bbls | 0.6 |
| Intentional Release Bbls | 50 |
| Recovered Bbls | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Notification From Public |
| Incident Identified Datetime | 2020-11-17 08:23:00 |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2020-11-17 08:34:00 |
| Restart Datetime | 2020-11-22 17:00:00 |
| On Site Datetime | 2020-11-17 08:23:00 |
| Nrc Rpt Datetime | 2020-11-17 10:17:00 |
| Nrc Rpt Num | 1292452 NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Upstream Valve Type Ind | Remotely Controlled |
| Downstream Valve Type Ind | Manual |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | West Leg Loop |
| Segment Name | 428 |
| Onshore State Abbreviation | Ks |
| Onshore Postal Code | 66953 |
| Onshore City Name | Not Within A Municipality |
| Onshore County Name | Washington |
| Designated Location | Milepost/valve Station |
| Designated Name | Linn Station |
| Federal | No |
| Location Type | Totally Contained On Operator-Controlled Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 48 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Tap Fitting(Stopple, Thread-O-Ring, Weld-O-Let, Etc.) |
| Installation Year | Unknown |
| Material Involved | Material Other Than Carbon Steel |
| Material Details | Buna N O-Ring |
| 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 | No |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 1120 |
| Est Cost Prop Damage | 184000 |
| Est Cost Emergency | 0 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 185120 |
| Accident Psig | 1220 |
| Mop Psig | 1440 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 47857 |
| 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 | Yes |
| Cpm Operating Ind | Yes |
| Cpm Functional Ind | Yes |
| Cpm Detection Ind | No |
| Cpm Conf 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 | Pl controller did not contribute to the cause of this incident. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Non-Threaded Connection Failure |
| Eq Failure Type | Non-Threaded Connection Failure |
| Other Non Threaded Ind | O-Ring |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | Deterioration Of The O-Ring |
| Preparer Name | H*** D*** |
| Preparer Title | Sr. Pipeline Compliance Engineer |
| Preparer Email | H****@e****.com |
| Preparer Telephone | 713-381-4277 |
| Prepared Date | 2021-01-14 00:00:00 |
| Authorizer Name | H*** D*** |
| Authorizer Telephone | 713-381-4277 |
| Authorizer Title | Sr. Pipeline Compliance Engineer |
| Authorizer Email | H****@e****.com |
| Narrative | On 11/17/2020 at 08:08 ct, houston control center (hcc) was contacted by an enterprise technician reporting that a third party observed vapor at linn station. Hcc shut down the pump units while the technician was in-route to the station. Once on site at 08:23 ct the technician discovered frost on the ground above lid 428 pipeline inside the station. At 08:34 ct houston control center reduced the pressure and isolated the pipeline. After discussions with operations and onsite technician, at 09:40 ct it was determined that the estimated repair cost would likely exceed the $50,000 reporting threshold for nrc. An estimated 25 gallons of propane leaked from the pipeline with 50 barrels flared from the line prior to the nitrogen purge allowing for excavation and repair. Once excavated a stopple split tee fitting was found to be the source of the leak and was cut out and replaced with 40 feet of pipe. The pipeline was returned to service on 11/22/2020 at 17:00 ct. Initial call to nrc was made on 11/17/2020 at 10:17 ct (nrc#1292452). The call was made based on repair cost estimates exceeding $50,000. 48hr update call to nrc was made on 11/19/2020 (nrc#1292636). The update provided an estimated product release of 25 gallons. |
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