Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2019-11-02 — OK
Operator
Enlink Permian, Llc
Cause
Incorrect Operation
Commodity
Crude Oil
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$25,000
Incident datetime
2019-11-02 11:02
Report number
Location
OK
Narrative
During the recent construction of the falcon crude terminal and associated pipelines, a td williamson manufactured device, formally titled as a scraper passage indicator or pig-sig, was installed on the 10" pipeline discharge piping downstream of the scraper trap valve setting. After the line fill operation was complete and the pipeline operational, it was noticed approximately eight days later that the pig-sig was slightly leaking around the threads. Construction, contract inspection, and operations personnel met on site on november 2, 2019 to repair the leaking device. After shutting down the customers gathering field and the associated gathering line that connects to the facility inlet pipeline, the crew began repair activities. With a drip pan placed underneath the device, workers slowly started to loosen and unscrew the threaded pig-sig. After approximately ten minutes the threads continued to leak. Therefore, personnel decided to tighten the device, resulting in the device detaching completely from the pipeline and consequently releasing crude oil from the pig-sig connection point. Operations personnel immediately began emergency response activities by notifying appropriate personnel, remotely isolating the remaining assets through pipeline control, deploying equipment, and an establishing an incident command structure. Crude oil continued to release from the pipeline for two hours and 13 minutes until a valve was safely installed and closed at 1:15pm cst, terminating the release. Cleanup operations began and the pipeline was put back into full service at 10:30 pm cst. Calculations determined the amount of crude oil spilled was approximately 1501* barrels. *the initial 1 hour notification it was reported that an estimated 200 barrels was on the ground. This information came from an observation of personal in the field. The sandy soil at the site absorbed most of the product making it difficult to make a more accurate estimate on how much was leaked.* root cause incorrect installation of the td williamson scraper passage indicator - the investigation team concluded that the original installation of the pig-sig was incorrectly installed during construction, as it was evident after close inspection that the stainless steel threads were stripped and galled after close inspection. The device leaked for an extended period after crude oil was introduced to the pipeline. Contributing factors: 1: the pig-sig was installed outside of the scraper trap discharge launcher, on the pipeline, essentially making it impossible to isolate the crude stream and the full segment of pipeline containing the crude oil was releasing though the opening. 2: workers did not recognize the effect of the pipeline, elevation and valve arrangements. 3: a 16-day gap existed from the initial time the leaking pig-sig was noticed until an actual time of repair.
Detailed record list
Report Received Date
2019-12-02 00:00:00
Iyear
2019
Report Number
20190362
Supplemental Number
33032
Report Type
Supplemental Final
Operator Id
32634
Name
Enlink Permian, Llc
Operator Street Address
100 West 5th St.
Operator City Name
Tulsa
Operator State Abbreviation
OK
Operator Postal Code
74103
Local Datetime
2019-11-02 14:15:00
Location Latitude
32.251642
Location Longitude
-103.961531
Commodity Released Type
Crude Oil
Unintentional Release Bbls
1501
Recovered Bbls
100
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
Incident Identified Datetime
2019-11-02 11:02:00
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Shutdown Due Accident Ind
No
Shutdown Explain
Pipeline Was Shut Down Due To Replacement Of Pig-Sig
On Site Datetime
2019-11-02 09:30:00
Nrc Rpt Datetime
2019-11-02 15:02:00
Nrc Rpt Num
1262922
Ignite Ind
No
Explode Ind
No
Upstream Valve Type Ind
Automatic
Downstream Valve Type Ind
Manual
Num Pub Evacuated
0
Pipe Fac Name
Falcon Discharge
Segment Name
Dcg-1016
Onshore State Abbreviation
Nm
Onshore Postal Code
88256
Onshore City Name
Not Within A Municipality
Onshore County Name
Eddy County
Designated Location
Milepost/valve Station
Designated Name
00+00
Federal
No
Location Type
Originated On Operator-Controlled Property, But Then Flowed Or Migrated Off The Property
Incident Area Type
Aboveground
Incident Area Subtype
Typical Aboveground Facility Piping Or Appurtenance
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Other
Item Involved Details
Pig-Sig V Scrapper Passage Indicator
Installation Year
2019
Material Involved
Material Other Than Carbon Steel
Material Details
Stainless 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
Vegetation Remed Ind
Yes
Water Contam Ind
No
Could Be Hca
No
Commodity Reached Hca
No
Est Cost Oper Paid
100000
Est Cost Gas Released
84000
Est Cost Prop Damage
25000
Est Cost Emergency
50000
Est Cost Environmental
250000
Est Cost Other
0
Prpty
509000
Accident Psig
85
Mop Psig
1440
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
39100
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
Controllers actions did not contribute to this accident.
Employee Drug Test Ind
Yes
Contractor Drug Test Ind
No
Num Employees Tested
1
Num Employees Failed
0
Cause
Incorrect Operation
Cause Details
Equipment Not Installed Properly
Operation Type
Equipment Not Installed Properly
Related Failure Follow Ind
Yes
Category Type
Construction
Operator Qualification Ind
No
Preparer Name
J*** R****
Preparer Title
Lead Dot Compliance Specialist
Preparer Email
J*******@e*****.com
Preparer Telephone
9406831112
Prepared Date
2019-12-06 00:00:00
Authorizer Name
J*** R****
Authorizer Telephone
9406831112
Authorizer Title
Lead Dot Compliance Specialist
Authorizer Email
J*******@e*****.com
Narrative
During the recent construction of the falcon crude terminal and associated pipelines, a td williamson manufactured device, formally titled as a scraper passage indicator or pig-sig, was installed on the 10" pipeline discharge piping downstream of the scraper trap valve setting. After the line fill operation was complete and the pipeline operational, it was noticed approximately eight days later that the pig-sig was slightly leaking around the threads. Construction, contract inspection, and operations personnel met on site on november 2, 2019 to repair the leaking device. After shutting down the customers gathering field and the associated gathering line that connects to the facility inlet pipeline, the crew began repair activities. With a drip pan placed underneath the device, workers slowly started to loosen and unscrew the threaded pig-sig. After approximately ten minutes the threads continued to leak. Therefore, personnel decided to tighten the device, resulting in the device detaching completely from the pipeline and consequently releasing crude oil from the pig-sig connection point. Operations personnel immediately began emergency response activities by notifying appropriate personnel, remotely isolating the remaining assets through pipeline control, deploying equipment, and an establishing an incident command structure. Crude oil continued to release from the pipeline for two hours and 13 minutes until a valve was safely installed and closed at 1:15pm cst, terminating the release. Cleanup operations began and the pipeline was put back into full service at 10:30 pm cst. Calculations determined the amount of crude oil spilled was approximately 1501* barrels. *the initial 1 hour notification it was reported that an estimated 200 barrels was on the ground. This information came from an observation of personal in the field. The sandy soil at the site absorbed most of the product making it difficult to make a more accurate estimate on how much was leaked.* root cause incorrect installation of the td williamson scraper passage indicator - the investigation team concluded that the original installation of the pig-sig was incorrectly installed during construction, as it was evident after close inspection that the stainless steel threads were stripped and galled after close inspection. The device leaked for an extended period after crude oil was introduced to the pipeline. Contributing factors: 1: the pig-sig was installed outside of the scraper trap discharge launcher, on the pipeline, essentially making it impossible to isolate the crude stream and the full segment of pipeline containing the crude oil was releasing though the opening. 2: workers did not recognize the effect of the pipeline, elevation and valve arrangements. 3: a 16-day gap existed from the initial time the leaking pig-sig was noticed until an actual time of repair.
| Report Received Date | 2019-12-02 00:00:00 |
|---|---|
| Iyear | 2019 |
| Report Number | 20190362 |
| Supplemental Number | 33032 |
| Report Type | Supplemental Final |
| Operator Id | 32634 PHMSA Enforcement |
| Name | Enlink Permian, Llc |
| Operator Street Address | 100 West 5th St. |
| Operator City Name | Tulsa |
| Operator State Abbreviation | OK |
| Operator Postal Code | 74103 |
| Local Datetime | 2019-11-02 14:15:00 |
| Location Latitude | 32.251642 Google Maps OpenStreetMap |
| Location Longitude | -103.961531 Google Maps OpenStreetMap |
| Commodity Released Type | Crude Oil |
| Unintentional Release Bbls | 1501 |
| Recovered Bbls | 100 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| Incident Identified Datetime | 2019-11-02 11:02:00 |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | Pipeline Was Shut Down Due To Replacement Of Pig-Sig |
| On Site Datetime | 2019-11-02 09:30:00 |
| Nrc Rpt Datetime | 2019-11-02 15:02:00 |
| Nrc Rpt Num | 1262922 NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Upstream Valve Type Ind | Automatic |
| Downstream Valve Type Ind | Manual |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Falcon Discharge |
| Segment Name | Dcg-1016 |
| Onshore State Abbreviation | Nm |
| Onshore Postal Code | 88256 |
| Onshore City Name | Not Within A Municipality |
| Onshore County Name | Eddy County |
| Designated Location | Milepost/valve Station |
| Designated Name | 00+00 |
| Federal | No |
| Location Type | Originated On Operator-Controlled Property, But Then Flowed Or Migrated Off The Property |
| Incident Area Type | Aboveground |
| Incident Area Subtype | Typical Aboveground Facility Piping Or Appurtenance |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Other |
| Item Involved Details | Pig-Sig V Scrapper Passage Indicator |
| Installation Year | 2019 |
| Material Involved | Material Other Than Carbon Steel |
| Material Details | Stainless 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 |
| Vegetation Remed Ind | Yes |
| Water Contam Ind | No |
| Could Be Hca | No |
| Commodity Reached Hca | No |
| Est Cost Oper Paid | 100000 |
| Est Cost Gas Released | 84000 |
| Est Cost Prop Damage | 25000 |
| Est Cost Emergency | 50000 |
| Est Cost Environmental | 250000 |
| Est Cost Other | 0 |
| Prpty | 509000 |
| Accident Psig | 85 |
| Mop Psig | 1440 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 39100 |
| 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 | Controllers actions did not contribute to this accident. |
| Employee Drug Test Ind | Yes |
| Contractor Drug Test Ind | No |
| Num Employees Tested | 1 |
| Num Employees Failed | 0 |
| Cause | Incorrect Operation |
| Cause Details | Equipment Not Installed Properly |
| Operation Type | Equipment Not Installed Properly |
| Related Failure Follow Ind | Yes |
| Category Type | Construction |
| Operator Qualification Ind | No |
| Preparer Name | J*** R**** |
| Preparer Title | Lead Dot Compliance Specialist |
| Preparer Email | J*******@e*****.com |
| Preparer Telephone | 9406831112 |
| Prepared Date | 2019-12-06 00:00:00 |
| Authorizer Name | J*** R**** |
| Authorizer Telephone | 9406831112 |
| Authorizer Title | Lead Dot Compliance Specialist |
| Authorizer Email | J*******@e*****.com |
| Narrative | During the recent construction of the falcon crude terminal and associated pipelines, a td williamson manufactured device, formally titled as a scraper passage indicator or pig-sig, was installed on the 10" pipeline discharge piping downstream of the scraper trap valve setting. After the line fill operation was complete and the pipeline operational, it was noticed approximately eight days later that the pig-sig was slightly leaking around the threads. Construction, contract inspection, and operations personnel met on site on november 2, 2019 to repair the leaking device. After shutting down the customers gathering field and the associated gathering line that connects to the facility inlet pipeline, the crew began repair activities. With a drip pan placed underneath the device, workers slowly started to loosen and unscrew the threaded pig-sig. After approximately ten minutes the threads continued to leak. Therefore, personnel decided to tighten the device, resulting in the device detaching completely from the pipeline and consequently releasing crude oil from the pig-sig connection point. Operations personnel immediately began emergency response activities by notifying appropriate personnel, remotely isolating the remaining assets through pipeline control, deploying equipment, and an establishing an incident command structure. Crude oil continued to release from the pipeline for two hours and 13 minutes until a valve was safely installed and closed at 1:15pm cst, terminating the release. Cleanup operations began and the pipeline was put back into full service at 10:30 pm cst. Calculations determined the amount of crude oil spilled was approximately 1501* barrels. *the initial 1 hour notification it was reported that an estimated 200 barrels was on the ground. This information came from an observation of personal in the field. The sandy soil at the site absorbed most of the product making it difficult to make a more accurate estimate on how much was leaked.* root cause incorrect installation of the td williamson scraper passage indicator - the investigation team concluded that the original installation of the pig-sig was incorrectly installed during construction, as it was evident after close inspection that the stainless steel threads were stripped and galled after close inspection. The device leaked for an extended period after crude oil was introduced to the pipeline. Contributing factors: 1: the pig-sig was installed outside of the scraper trap discharge launcher, on the pipeline, essentially making it impossible to isolate the crude stream and the full segment of pipeline containing the crude oil was releasing though the opening. 2: workers did not recognize the effect of the pipeline, elevation and valve arrangements. 3: a 16-day gap existed from the initial time the leaking pig-sig was noticed until an actual time of repair. |
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