Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2023-12-15 — TX
Operator
Panther Operating Company, Llc
Cause
Other Accident Cause
Commodity
Crude Oil
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$0
Incident datetime
2023-12-15 00:00 UTC
Report number
Location
TX
Narrative
Due to character restrictions in the portal; see original submission 20230301-38969 for original narrative. Between 12/15/23 (due date and submission of original 7000-1) and 12/28/23 third coast conducted rov and dive inspections along the mpog system. An area of interest; a pipeline crossing located just north of platform mp69 in louisiana state waters that included a 2005 repair was inspected by divers. The crossing had been repaired in the past due to hurricane damage. The repair spool collet grips were inspected, and a leak test preformed on each on 12/28/23. One collet grip connection (southern end) failed the leak test. After the failure the collet connection was inspected by the divers, and it was found that the seal on the collet grip had failed. Between 12/28/23 and 02/10/24 a plan was developed to recover the suspect failed collet grip spool piece. Once the plan was approved, third coast experience several weather delays that delayed the cutting and recovery operation of the pipe piece. On 2/10/24 the pipe piece removed, recovered, and preserved per the approved procedure and transported to the dock where the ntsb took procession and sent off the pipe to oil states for analysis. A new spool piece was fabricated, and installation of the spool piece and leak test of the connection flanges was completed on 02/21/24. Between 02/21/24 and 4/3/24 the pipeline integrity test was developed, sent through approvals of the unified command and the national response team for review and revisions. During this time weather conditions were monitored for an acceptable timeframe. On 4/4/24 through 4/5/24 the approved integrity test was implemented successfully. Between 04/12/24 and 04/25/24 the pipeline was brought back into service with each producer turned on in turn via a PHMSA approved restart plan. Mpog is continuing to investigate the estimate of oil released during the incident in light of the additional information recently made publicly available by ntsb as part of its investigation. Mpog is of course aware of the statements contained in those materials related to the estimated volume of oil released. Those estimates are based on metering measurements alone. Mpog is continuing to investigate the accuracy of the metering data in light of the identified source of the release as determined by ntsb and the potential for the release of oil from that identified source given the physical evidence recovered by ntsb as well as the circumstances and conditions that existed at the time of the release.
Detailed record list
Report Received Date
2023-12-15 00:00:00
Iyear
2023
Report Number
20230301
Supplemental Number
40328
Report Type
Supplemental
Operator Id
31994
Name
Panther Operating Company, Llc
Operator Street Address
Third Coast Midstream, Llc Po Box 1227
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77251
Time Zone
Central
Daylight Savings Ind
No
Location Latitude
29.250106
Location Longitude
-89.0167
Commodity Released Type
Crude Oil
Unintentional Release Bbls
291
Recovered Bbls
5
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Or Pack Calculations)
System Part Involved
Offshore Pipeline, Including Riser And Riser Bend
On Off Shore
Offshore
Status When Identified
Normal Operation, Includes Pauses Between Batches And During Maintenance
Shutdown Due Accident Ind
Yes
Communication State Fed Ind
No
Nrc Rpt Num
1384438
Additional Nrc Report Numbers
1384617
Ignite Ind
No
Upstream Action Taken
Operational Control
Upstream Oprtnl Cntrl Detail
All Producers Shut Down, Shutting Down The Pipeline
Downstream Action Taken
Operational Control
Downstream Oprtnl Cntrl Detail
All Producers Shut Down, Shutting Down The Pipeline
Num Pub Evacuated
0
Pipe Fac Name
Mpog
Segment Name
1 Mp 225a To Fed/state Line (Bsee 11015)
Off Water Depth
57
Off Accident Origin
In State Waters
Offshore State Abbreviation
La
Off Instate Area
Main Pass
Off Instate Block
69
Offshore County Name
Plaquemines
Off Area Accident Type
Below Water, Pipe Buried Or Jetted Below Seabed
Pipe Facility Type
Interstate
Item Involved
Flange Assembly
Installation Year
2005
Manufactured Year
2005
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Connection Failure
Wildlife Impact Ind
Yes
Birds Impact Ind
Yes
Soil Contamination
No
Long Term Assessment
No
Remediation Ind
No
Water Contam Ind
Yes
Ocean Seawater Ind
Yes
Amount Released
291
Rel Water Name
Gulf Of Mexico
Could Be Hca
No
Commodity Reached Hca
No
Est Cost Oper Paid
0
Est Cost Gas Released
22308
Est Cost Prop Damage
0
Est Cost Emergency
30000000
Est Cost Environmental
0
Est Cost Other
0
Prpty
30022308
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Accident Psig
550
Mop Psig
1950
Mop Cfr Section
Subpart E Pressure Test �195.406(A)(3)
Maop Established Date
1996-10-16 00:00:00
Maop Reversal Flow Ind
No
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
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
No
Investigation Status
Yes, specify investigation result(s): (select all that apply)
Invest Incorrect Action Ind
Yes
Employee Drug Test Ind
Yes
Contractor Drug Test Ind
No
Num Employees Tested
2
Num Employees Failed
0
Cause
Other Accident Cause
Cause Details
Unknown
Other Type
Unknown
Unknown Subtype
Still Under Investigation, Cause Of Accident To Be Determined* (*supplemental Report Required)
Preparer Name
N****** P********
Preparer Title
Manager Pipeline Regulatory Compliance
Preparer Email
N*********@t**********.com
Preparer Telephone
346-241-3368
Prepared Date
2024-12-18 00:00:00
Authorizer Name
N****** P********
Authorizer Telephone
346-241-3368
Authorizer Title
Manager Pipeline Regulatory Compliance
Authorizer Email
N*********@t**********.com
Narrative
Due to character restrictions in the portal; see original submission 20230301-38969 for original narrative. Between 12/15/23 (due date and submission of original 7000-1) and 12/28/23 third coast conducted rov and dive inspections along the mpog system. An area of interest; a pipeline crossing located just north of platform mp69 in louisiana state waters that included a 2005 repair was inspected by divers. The crossing had been repaired in the past due to hurricane damage. The repair spool collet grips were inspected, and a leak test preformed on each on 12/28/23. One collet grip connection (southern end) failed the leak test. After the failure the collet connection was inspected by the divers, and it was found that the seal on the collet grip had failed. Between 12/28/23 and 02/10/24 a plan was developed to recover the suspect failed collet grip spool piece. Once the plan was approved, third coast experience several weather delays that delayed the cutting and recovery operation of the pipe piece. On 2/10/24 the pipe piece removed, recovered, and preserved per the approved procedure and transported to the dock where the ntsb took procession and sent off the pipe to oil states for analysis. A new spool piece was fabricated, and installation of the spool piece and leak test of the connection flanges was completed on 02/21/24. Between 02/21/24 and 4/3/24 the pipeline integrity test was developed, sent through approvals of the unified command and the national response team for review and revisions. During this time weather conditions were monitored for an acceptable timeframe. On 4/4/24 through 4/5/24 the approved integrity test was implemented successfully. Between 04/12/24 and 04/25/24 the pipeline was brought back into service with each producer turned on in turn via a PHMSA approved restart plan. Mpog is continuing to investigate the estimate of oil released during the incident in light of the additional information recently made publicly available by ntsb as part of its investigation. Mpog is of course aware of the statements contained in those materials related to the estimated volume of oil released. Those estimates are based on metering measurements alone. Mpog is continuing to investigate the accuracy of the metering data in light of the identified source of the release as determined by ntsb and the potential for the release of oil from that identified source given the physical evidence recovered by ntsb as well as the circumstances and conditions that existed at the time of the release.
| Report Received Date | 2023-12-15 00:00:00 |
|---|---|
| Iyear | 2023 |
| Report Number | 20230301 |
| Supplemental Number | 40328 |
| Report Type | Supplemental |
| Operator Id | 31994 PHMSA Enforcement |
| Name | Panther Operating Company, Llc |
| Operator Street Address | Third Coast Midstream, Llc Po Box 1227 |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77251 |
| Time Zone | Central |
| Daylight Savings Ind | No |
| Location Latitude | 29.250106 Google Maps OpenStreetMap |
| Location Longitude | -89.0167 Google Maps OpenStreetMap |
| Commodity Released Type | Crude Oil |
| Unintentional Release Bbls | 291 |
| Recovered Bbls | 5 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Or Pack Calculations) |
| System Part Involved | Offshore Pipeline, Including Riser And Riser Bend |
| On Off Shore | Offshore |
| Status When Identified | Normal Operation, Includes Pauses Between Batches And During Maintenance |
| Shutdown Due Accident Ind | Yes |
| Communication State Fed Ind | No |
| Nrc Rpt Num | 1384438 NRC Report How to search |
| Additional Nrc Report Numbers | 1384617 |
| Ignite Ind | No |
| Upstream Action Taken | Operational Control |
| Upstream Oprtnl Cntrl Detail | All Producers Shut Down, Shutting Down The Pipeline |
| Downstream Action Taken | Operational Control |
| Downstream Oprtnl Cntrl Detail | All Producers Shut Down, Shutting Down The Pipeline |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Mpog |
| Segment Name | 1 Mp 225a To Fed/state Line (Bsee 11015) |
| Off Water Depth | 57 |
| Off Accident Origin | In State Waters |
| Offshore State Abbreviation | La |
| Off Instate Area | Main Pass |
| Off Instate Block | 69 |
| Offshore County Name | Plaquemines |
| Off Area Accident Type | Below Water, Pipe Buried Or Jetted Below Seabed |
| Pipe Facility Type | Interstate |
| Item Involved | Flange Assembly |
| Installation Year | 2005 |
| Manufactured Year | 2005 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Connection Failure |
| Wildlife Impact Ind | Yes |
| Birds Impact Ind | Yes |
| Soil Contamination | No |
| Long Term Assessment | No |
| Remediation Ind | No |
| Water Contam Ind | Yes |
| Ocean Seawater Ind | Yes |
| Amount Released | 291 |
| Rel Water Name | Gulf Of Mexico |
| Could Be Hca | No |
| Commodity Reached Hca | No |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 22308 |
| Est Cost Prop Damage | 0 |
| Est Cost Emergency | 30000000 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 30022308 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Accident Psig | 550 |
| Mop Psig | 1950 |
| Mop Cfr Section | Subpart E Pressure Test �195.406(A)(3) View CFR 49 §192 |
| Maop Established Date | 1996-10-16 00:00:00 |
| Maop Reversal Flow Ind | No |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| 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 | No |
| Investigation Status | Yes, specify investigation result(s): (select all that apply) |
| Invest Incorrect Action Ind | Yes |
| Employee Drug Test Ind | Yes |
| Contractor Drug Test Ind | No |
| Num Employees Tested | 2 |
| Num Employees Failed | 0 |
| Cause | Other Accident Cause |
| Cause Details | Unknown |
| Other Type | Unknown |
| Unknown Subtype | Still Under Investigation, Cause Of Accident To Be Determined* (*supplemental Report Required) |
| Preparer Name | N****** P******** |
| Preparer Title | Manager Pipeline Regulatory Compliance |
| Preparer Email | N*********@t**********.com |
| Preparer Telephone | 346-241-3368 |
| Prepared Date | 2024-12-18 00:00:00 |
| Authorizer Name | N****** P******** |
| Authorizer Telephone | 346-241-3368 |
| Authorizer Title | Manager Pipeline Regulatory Compliance |
| Authorizer Email | N*********@t**********.com |
| Narrative | Due to character restrictions in the portal; see original submission 20230301-38969 for original narrative. Between 12/15/23 (due date and submission of original 7000-1) and 12/28/23 third coast conducted rov and dive inspections along the mpog system. An area of interest; a pipeline crossing located just north of platform mp69 in louisiana state waters that included a 2005 repair was inspected by divers. The crossing had been repaired in the past due to hurricane damage. The repair spool collet grips were inspected, and a leak test preformed on each on 12/28/23. One collet grip connection (southern end) failed the leak test. After the failure the collet connection was inspected by the divers, and it was found that the seal on the collet grip had failed. Between 12/28/23 and 02/10/24 a plan was developed to recover the suspect failed collet grip spool piece. Once the plan was approved, third coast experience several weather delays that delayed the cutting and recovery operation of the pipe piece. On 2/10/24 the pipe piece removed, recovered, and preserved per the approved procedure and transported to the dock where the ntsb took procession and sent off the pipe to oil states for analysis. A new spool piece was fabricated, and installation of the spool piece and leak test of the connection flanges was completed on 02/21/24. Between 02/21/24 and 4/3/24 the pipeline integrity test was developed, sent through approvals of the unified command and the national response team for review and revisions. During this time weather conditions were monitored for an acceptable timeframe. On 4/4/24 through 4/5/24 the approved integrity test was implemented successfully. Between 04/12/24 and 04/25/24 the pipeline was brought back into service with each producer turned on in turn via a PHMSA approved restart plan. Mpog is continuing to investigate the estimate of oil released during the incident in light of the additional information recently made publicly available by ntsb as part of its investigation. Mpog is of course aware of the statements contained in those materials related to the estimated volume of oil released. Those estimates are based on metering measurements alone. Mpog is continuing to investigate the accuracy of the metering data in light of the identified source of the release as determined by ntsb and the potential for the release of oil from that identified source given the physical evidence recovered by ntsb as well as the circumstances and conditions that existed at the time of the release. |
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