Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2018-04-17 — TX
Operator
Genesis Offshore Holdings, Llc
Cause
Notification Issue
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$443,478
Incident datetime
2018-04-17 22:14
Report number
Location
TX
Narrative
A dredging spud barge operated by rlb contracting, inc. Was performing underwater operations in the matagorda bay, tx area near port o'connor on the night of 4/17/2018. Records show that at this point, genesis was not notified of the operation and a onecall notification was not made by the contractor prior to operations. At approximately 20:45, the barge dropped a spud on the genesis offshore holdings, llc pipeline named tomcat, a 20" natural gas gathering pipeline. The spud caused a 2.5" by 4" puncture hole on the pipeline releasing the product. The natural gas and condensate released ignited above the water surface. The barge personnel quickly called 811 to report a hit pipeline at 20:58. A genesis operator received the 811 notice and called the genesis offshore superintendent to report the incident. Tglo, trrc, nrc, and PHMSA were notified. A genesis operator was dispatched to the downstream valve at milsp plant to begin the controlled blowdown of the product however by the time he arrived at the plant, the pressure was already at approximately 150psi and dropping. Rlb initially contracted horizon (osro) to begin emergency response efforts. Genesis also executed the response plan and activated appropriate response contractors. Uscg arrived at the scene and assumed incident command of the response operations. The barge crew was safely evacuated from the barge and boom was deployed to contain liquids. Gas fire extinguished at approximately 15:00 on 4/18/2018. The temporary repair on the pipeline was completed and the work spread departed early april 27th. Note: part d, question 7d is the sum of the total product lost (not recovered) as reported in part a questions 12. This is equal to 3,458 barrels of condensate priced at $67.50 per barrel ($233,415). Note: part e, question 6: scada was fully functional at the time of the incident however the control room was unable to see a pressure drop because they were seeing the pressure downstream of the block valve at the milsp plant. The pipeline was shut in and not flowing at the time of the incident, as reported in part a, question 15. Supplemental report (6/18/2018) - update to part d. Received estimate from rlb contracting for estimated non-operator damages incurred (question 7a). In addition, updated questions 7b and 7c to reflect more accurate estimates.
Detailed record list
Report Received Date
2018-05-15 00:00:00
Iyear
2018
Report Number
20180054
Supplemental Number
30510
Report Type
Supplemental Final
Operator Id
39352
Name
Genesis Offshore Holdings, Llc
Operator Street Address
811 Louisiana St. Suite 1200
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Local Datetime
2018-04-17 20:45:00
Location Latitude
28.4589
Location Longitude
-96.3866
Nrc Rpt Num
1209604
Nrc Rpt Datetime
2018-04-17 22:45:00
Commodity Released Type
Natural Gas
Unintentional Release
12680
Intentional Release
0
Accompanying Liquid
3458
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Shutdown Due Accident Ind
No
Shutdown Explain
The Pipeline Was Shut In And Not Flowing At The Time Of The Incident.
Ignite Ind
Yes
Explode Ind
No
Num Pub Evacuated
12
Incident Identified Datetime
2018-04-17 22:14:00
On Site Datetime
2018-04-18 03:00:00
On Off Shore
Offshore
Off Water Depth
12
Off Accident Origin
In State Waters
Offshore State Abbreviation
Tx
Off Instate Area
Matagorda Bay
Off Instate Block
State Tract 135
Offshore County Name
Calhoun
Off Area Accident Type
Below Water, Pipe Buried Or Jetted Below Seabed
Pipe Facility Type
Interstate
System Part Involved
Offshore Pipeline, Including Riser And Riser Bend
Item Involved
Pipe
Pipe Type
Pipe Body
Pipe Diameter
20
Pipe Wall Thickness
0.438
Pipe Smys
52000
Pipe Specification
Api 5l
Pipe Seam Type
Longitudinal Erw - High Frequency
Pipe Manufacturer
Unknown
Pipe Coating Type
Other
Pipe Coating Details
Concrete Coating
Installation Year
1988
Manufactured Year
Unknown
Material Involved
Carbon Steel
Release Type
Mechanical Puncture
Puncture Axial
4
Puncture Circum
10.5
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
530
Heat Damage Ind
No
Non Heat Damage Ind
No
Hca Fatalities Ind
No
Est Cost Oper Paid
5000000
Est Cost Unintentional Release
34743
Est Cost Intentional Release
0
Est Cost Prop Damage
443478
Est Cost Emergency
123370
Est Cost Other
233415
Est Cost Other Details
Cost Of Condensate Released.
Prpty
5835006
Accident Psig
450
Mop Psig
1440
Mop Cfr Section
192.619(A)(1)
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
No
Upstream Valve Type Ind
Manual
Downstream Valve Type Ind
Automatic
Length Segment Isolated
146741
Internal Inspection Ind
No
Tight Mitered Ind
Yes
Other Restrictions Ind
Yes
Operation Complications Ind
Yes
Low Op Pressure Ind
Yes
Low Flow Ind
Yes
Pipeline Function
Offshore Gathering
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
No
Scada Conf Ind
No
Accident Identifier
Notification From Third Party That Caused The Incident
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
The incident was caused by 3rd party damage to the pipeline.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Excavation Damage
Cause Details
Excavation Damage By Third Party
Ex Party Type
Excavation Damage By Third Party
Prior Notification Ind
No
Notify Cga Dirt
Yes
Public Row Ind
Yes
Public Subtype
Other
Excavator Type
Contractor
Excavator Equipment
Vacuum Equipment
Work Performed
Waterway Improvements
One Call Notified Ind
No
Root Cause Category
Notification Issue
Root Cause Type
No Notification Made To The One-Call Center/811
Preparer Name
J**** M*****
Preparer Title
Pipeline Compliance Specialist
Preparer Email
J***********@g****.com
Preparer Telephone
225-263-0575
Authorizer Name
J*** J*****
Authorizer Title
Dot Compliance Manager
Authorizer Telephone
713-860-2506
Authorizer Email
J**********@g****.com
Narrative
A dredging spud barge operated by rlb contracting, inc. Was performing underwater operations in the matagorda bay, tx area near port o'connor on the night of 4/17/2018. Records show that at this point, genesis was not notified of the operation and a onecall notification was not made by the contractor prior to operations. At approximately 20:45, the barge dropped a spud on the genesis offshore holdings, llc pipeline named tomcat, a 20" natural gas gathering pipeline. The spud caused a 2.5" by 4" puncture hole on the pipeline releasing the product. The natural gas and condensate released ignited above the water surface. The barge personnel quickly called 811 to report a hit pipeline at 20:58. A genesis operator received the 811 notice and called the genesis offshore superintendent to report the incident. Tglo, trrc, nrc, and PHMSA were notified. A genesis operator was dispatched to the downstream valve at milsp plant to begin the controlled blowdown of the product however by the time he arrived at the plant, the pressure was already at approximately 150psi and dropping. Rlb initially contracted horizon (osro) to begin emergency response efforts. Genesis also executed the response plan and activated appropriate response contractors. Uscg arrived at the scene and assumed incident command of the response operations. The barge crew was safely evacuated from the barge and boom was deployed to contain liquids. Gas fire extinguished at approximately 15:00 on 4/18/2018. The temporary repair on the pipeline was completed and the work spread departed early april 27th. Note: part d, question 7d is the sum of the total product lost (not recovered) as reported in part a questions 12. This is equal to 3,458 barrels of condensate priced at $67.50 per barrel ($233,415). Note: part e, question 6: scada was fully functional at the time of the incident however the control room was unable to see a pressure drop because they were seeing the pressure downstream of the block valve at the milsp plant. The pipeline was shut in and not flowing at the time of the incident, as reported in part a, question 15. Supplemental report (6/18/2018) - update to part d. Received estimate from rlb contracting for estimated non-operator damages incurred (question 7a). In addition, updated questions 7b and 7c to reflect more accurate estimates.
| Report Received Date | 2018-05-15 00:00:00 |
|---|---|
| Iyear | 2018 |
| Report Number | 20180054 |
| Supplemental Number | 30510 |
| Report Type | Supplemental Final |
| Operator Id | 39352 PHMSA Enforcement |
| Name | Genesis Offshore Holdings, Llc |
| Operator Street Address | 811 Louisiana St. Suite 1200 |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77002 |
| Local Datetime | 2018-04-17 20:45:00 |
| Location Latitude | 28.4589 Google Maps OpenStreetMap |
| Location Longitude | -96.3866 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1209604 NRC Report How to search |
| Nrc Rpt Datetime | 2018-04-17 22:45:00 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 12680 |
| Intentional Release | 0 |
| Accompanying Liquid | 3458 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | The Pipeline Was Shut In And Not Flowing At The Time Of The Incident. |
| Ignite Ind | Yes |
| Explode Ind | No |
| Num Pub Evacuated | 12 |
| Incident Identified Datetime | 2018-04-17 22:14:00 |
| On Site Datetime | 2018-04-18 03:00:00 |
| On Off Shore | Offshore |
| Off Water Depth | 12 |
| Off Accident Origin | In State Waters |
| Offshore State Abbreviation | Tx |
| Off Instate Area | Matagorda Bay |
| Off Instate Block | State Tract 135 |
| Offshore County Name | Calhoun |
| Off Area Accident Type | Below Water, Pipe Buried Or Jetted Below Seabed |
| Pipe Facility Type | Interstate |
| System Part Involved | Offshore Pipeline, Including Riser And Riser Bend |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Pipe Diameter | 20 |
| Pipe Wall Thickness | 0.438 |
| Pipe Smys | 52000 |
| Pipe Specification | Api 5l |
| Pipe Seam Type | Longitudinal Erw - High Frequency |
| Pipe Manufacturer | Unknown |
| Pipe Coating Type | Other |
| Pipe Coating Details | Concrete Coating |
| Installation Year | 1988 |
| Manufactured Year | Unknown |
| Material Involved | Carbon Steel |
| Release Type | Mechanical Puncture |
| Puncture Axial | 4 |
| Puncture Circum | 10.5 |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 530 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Hca Fatalities Ind | No |
| Est Cost Oper Paid | 5000000 |
| Est Cost Unintentional Release | 34743 |
| Est Cost Intentional Release | 0 |
| Est Cost Prop Damage | 443478 |
| Est Cost Emergency | 123370 |
| Est Cost Other | 233415 |
| Est Cost Other Details | Cost Of Condensate Released. |
| Prpty | 5835006 |
| Accident Psig | 450 |
| Mop Psig | 1440 |
| Mop Cfr Section | 192.619(A)(1) View CFR 49 §192 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Pressure Restriction Ind | No |
| Upstream Valve Type Ind | Manual |
| Downstream Valve Type Ind | Automatic |
| Length Segment Isolated | 146741 |
| Internal Inspection Ind | No |
| Tight Mitered Ind | Yes |
| Other Restrictions Ind | Yes |
| Operation Complications Ind | Yes |
| Low Op Pressure Ind | Yes |
| Low Flow Ind | Yes |
| Pipeline Function | Offshore Gathering |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | No |
| Scada Conf Ind | No |
| Accident Identifier | Notification From Third Party That Caused The Incident |
| 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 | The incident was caused by 3rd party damage to the pipeline. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Excavation Damage |
| Cause Details | Excavation Damage By Third Party |
| Ex Party Type | Excavation Damage By Third Party |
| Prior Notification Ind | No |
| Notify Cga Dirt | Yes |
| Public Row Ind | Yes |
| Public Subtype | Other |
| Excavator Type | Contractor |
| Excavator Equipment | Vacuum Equipment |
| Work Performed | Waterway Improvements |
| One Call Notified Ind | No |
| Root Cause Category | Notification Issue |
| Root Cause Type | No Notification Made To The One-Call Center/811 |
| Preparer Name | J**** M***** |
| Preparer Title | Pipeline Compliance Specialist |
| Preparer Email | J***********@g****.com |
| Preparer Telephone | 225-263-0575 |
| Authorizer Name | J*** J***** |
| Authorizer Title | Dot Compliance Manager |
| Authorizer Telephone | 713-860-2506 |
| Authorizer Email | J**********@g****.com |
| Narrative | A dredging spud barge operated by rlb contracting, inc. Was performing underwater operations in the matagorda bay, tx area near port o'connor on the night of 4/17/2018. Records show that at this point, genesis was not notified of the operation and a onecall notification was not made by the contractor prior to operations. At approximately 20:45, the barge dropped a spud on the genesis offshore holdings, llc pipeline named tomcat, a 20" natural gas gathering pipeline. The spud caused a 2.5" by 4" puncture hole on the pipeline releasing the product. The natural gas and condensate released ignited above the water surface. The barge personnel quickly called 811 to report a hit pipeline at 20:58. A genesis operator received the 811 notice and called the genesis offshore superintendent to report the incident. Tglo, trrc, nrc, and PHMSA were notified. A genesis operator was dispatched to the downstream valve at milsp plant to begin the controlled blowdown of the product however by the time he arrived at the plant, the pressure was already at approximately 150psi and dropping. Rlb initially contracted horizon (osro) to begin emergency response efforts. Genesis also executed the response plan and activated appropriate response contractors. Uscg arrived at the scene and assumed incident command of the response operations. The barge crew was safely evacuated from the barge and boom was deployed to contain liquids. Gas fire extinguished at approximately 15:00 on 4/18/2018. The temporary repair on the pipeline was completed and the work spread departed early april 27th. Note: part d, question 7d is the sum of the total product lost (not recovered) as reported in part a questions 12. This is equal to 3,458 barrels of condensate priced at $67.50 per barrel ($233,415). Note: part e, question 6: scada was fully functional at the time of the incident however the control room was unable to see a pressure drop because they were seeing the pressure downstream of the block valve at the milsp plant. The pipeline was shut in and not flowing at the time of the incident, as reported in part a, question 15. Supplemental report (6/18/2018) - update to part d. Received estimate from rlb contracting for estimated non-operator damages incurred (question 7a). In addition, updated questions 7b and 7c to reflect more accurate estimates. |
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