Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2018-06-14 — OK
Operator
Transcontinental Gas Pipe Line Company
Cause
Equipment Failure
Commodity
Crude Oil
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$1,011,280
Incident datetime
2018-06-14 11:30
Report number
Location
OK
Narrative
6/14/2018 nrc was notified for sheen and incident case 1215257 was assigned. On june 14, 2018 bsee requested all pipelines in mississippi canyon 728 shut-in until the source of a leak could be identified. Bsee issued an order for all mountaineer pipeline inlets to be shut in and a subsea inspection of the plem in mc684 to be conducted prior to retarting production. An rov inspected the pipeline during the leak test and confirmed the location on the gs1 tie-in plem at mississippi canyon 728. Operations bled down the pressure and isolated the leak. On monday, june 18th corrective measures were completed and internal working plans to restore production were under way. Tuesday, june 19th bsee accepted all leak corrective actions and granted approval for all production to come back online. 2/11/2019 no hca identified on this segment.
Detailed record list
Report Received Date
2018-08-20 00:00:00
Iyear
2018
Report Number
20180246
Supplemental Number
31649
Report Type
Supplemental Final
Operator Id
32091
Name
Transcontinental Gas Pipe Line Company
Operator Street Address
One Williams Center Md 43-4
Operator City Name
Tulsa
Operator State Abbreviation
OK
Operator Postal Code
74172
Local Datetime
2018-06-14 11:30:00
Location Latitude
28.290415
Location Longitude
-88.764417
Commodity Released Type
Crude Oil
Unintentional Release Bbls
0.75
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Other
Accident Details
Bsee Notification And Air Patrol By Operator Employee
Incident Identified Datetime
2018-06-14 11:30:00
System Part Involved
Offshore Platform/deepwater Port, Including Platform-Mounted Equipment And Piping
On Off Shore
Offshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2018-06-14 12:11:00
Restart Datetime
2018-06-19 20:10:00
On Site Datetime
2018-06-15 17:30:00
Nrc Rpt Datetime
2018-06-14 12:49:00
Nrc Rpt Num
1215257
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Off Water Depth
5000
Off Accident Origin
On The Outer Continental Shelf (Ocs)
Off Ocs Area
Mississippi Canyon
Off Ocs Block
Mc 728
Off Area Accident Type
Below Water, Pipe On Or Above Seabed
Pipe Facility Type
Interstate
Item Involved
Valve
Valve Type
Auxiliary Or Other Valve
Installation Year
2014
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Connection Failure
Wildlife Impact Ind
No
Soil Contamination
No
Long Term Assessment
No
Remediation Ind
No
Water Contam Ind
Yes
Ocean Seawater Ind
Yes
Amount Released
0.75
Rel Water Name
Gulf Of Mexico
Could Be Hca
No
Commodity Reached Hca
No
Est Cost Oper Paid
0
Est Cost Gas Released
41
Est Cost Prop Damage
1011280
Est Cost Emergency
9200
Est Cost Environmental
0
Est Cost Other
0
Prpty
1020521
Accident Psig
400
Mop Psig
1766
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Pipeline Function
=< 20% Smys Regulated Gathering
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
At the time of the leak the pipeline was in normal operation with no action being taken by the controllers.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Other Equipment Failure
Eq Failure Type
Other Equipment Failure
Failure Details
Leaking Valve At Hot Stab Connection On The Subsea Plem
Eq Additional Other Ind
Yes
Eq Additional Other Details
Hot Stab Bypass Was Leaking Due To Trash Or Weld Slag
Preparer Name
S******** R***
Preparer Title
Pipeine Safety Engineer
Preparer Email
S*************@s********.net
Preparer Telephone
713-215-4163
Prepared Date
2019-02-13 00:00:00
Authorizer Name
C*** R****
Authorizer Telephone
918-573-6724
Authorizer Title
Manager Pipeline Safety
Authorizer Email
C**********@w*******.com
Narrative
6/14/2018 nrc was notified for sheen and incident case 1215257 was assigned. On june 14, 2018 bsee requested all pipelines in mississippi canyon 728 shut-in until the source of a leak could be identified. Bsee issued an order for all mountaineer pipeline inlets to be shut in and a subsea inspection of the plem in mc684 to be conducted prior to retarting production. An rov inspected the pipeline during the leak test and confirmed the location on the gs1 tie-in plem at mississippi canyon 728. Operations bled down the pressure and isolated the leak. On monday, june 18th corrective measures were completed and internal working plans to restore production were under way. Tuesday, june 19th bsee accepted all leak corrective actions and granted approval for all production to come back online. 2/11/2019 no hca identified on this segment.
| Report Received Date | 2018-08-20 00:00:00 |
|---|---|
| Iyear | 2018 |
| Report Number | 20180246 |
| Supplemental Number | 31649 |
| Report Type | Supplemental Final |
| Operator Id | 32091 PHMSA Enforcement |
| Name | Transcontinental Gas Pipe Line Company |
| Operator Street Address | One Williams Center Md 43-4 |
| Operator City Name | Tulsa |
| Operator State Abbreviation | OK |
| Operator Postal Code | 74172 |
| Local Datetime | 2018-06-14 11:30:00 |
| Location Latitude | 28.290415 Google Maps OpenStreetMap |
| Location Longitude | -88.764417 Google Maps OpenStreetMap |
| Commodity Released Type | Crude Oil |
| Unintentional Release Bbls | 0.75 |
| Recovered Bbls | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Other |
| Accident Details | Bsee Notification And Air Patrol By Operator Employee |
| Incident Identified Datetime | 2018-06-14 11:30:00 |
| System Part Involved | Offshore Platform/deepwater Port, Including Platform-Mounted Equipment And Piping |
| On Off Shore | Offshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2018-06-14 12:11:00 |
| Restart Datetime | 2018-06-19 20:10:00 |
| On Site Datetime | 2018-06-15 17:30:00 |
| Nrc Rpt Datetime | 2018-06-14 12:49:00 |
| Nrc Rpt Num | 1215257 NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Off Water Depth | 5000 |
| Off Accident Origin | On The Outer Continental Shelf (Ocs) |
| Off Ocs Area | Mississippi Canyon |
| Off Ocs Block | Mc 728 |
| Off Area Accident Type | Below Water, Pipe On Or Above Seabed |
| Pipe Facility Type | Interstate |
| Item Involved | Valve |
| Valve Type | Auxiliary Or Other Valve |
| Installation Year | 2014 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Connection Failure |
| Wildlife Impact Ind | No |
| Soil Contamination | No |
| Long Term Assessment | No |
| Remediation Ind | No |
| Water Contam Ind | Yes |
| Ocean Seawater Ind | Yes |
| Amount Released | 0.75 |
| Rel Water Name | Gulf Of Mexico |
| Could Be Hca | No |
| Commodity Reached Hca | No |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 41 |
| Est Cost Prop Damage | 1011280 |
| Est Cost Emergency | 9200 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 1020521 |
| Accident Psig | 400 |
| Mop Psig | 1766 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Pipeline Function | =< 20% Smys Regulated Gathering |
| 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 | At the time of the leak the pipeline was in normal operation with no action being taken by the controllers. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Other Equipment Failure |
| Eq Failure Type | Other Equipment Failure |
| Failure Details | Leaking Valve At Hot Stab Connection On The Subsea Plem |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | Hot Stab Bypass Was Leaking Due To Trash Or Weld Slag |
| Preparer Name | S******** R*** |
| Preparer Title | Pipeine Safety Engineer |
| Preparer Email | S*************@s********.net |
| Preparer Telephone | 713-215-4163 |
| Prepared Date | 2019-02-13 00:00:00 |
| Authorizer Name | C*** R**** |
| Authorizer Telephone | 918-573-6724 |
| Authorizer Title | Manager Pipeline Safety |
| Authorizer Email | C**********@w*******.com |
| Narrative | 6/14/2018 nrc was notified for sheen and incident case 1215257 was assigned. On june 14, 2018 bsee requested all pipelines in mississippi canyon 728 shut-in until the source of a leak could be identified. Bsee issued an order for all mountaineer pipeline inlets to be shut in and a subsea inspection of the plem in mc684 to be conducted prior to retarting production. An rov inspected the pipeline during the leak test and confirmed the location on the gs1 tie-in plem at mississippi canyon 728. Operations bled down the pressure and isolated the leak. On monday, june 18th corrective measures were completed and internal working plans to restore production were under way. Tuesday, june 19th bsee accepted all leak corrective actions and granted approval for all production to come back online. 2/11/2019 no hca identified on this segment. |
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