RIG & LIFTBOAT MOVE PLANNINGmemi.gov.bn/Shared Documents/HSSE/Information...
Transcript of RIG & LIFTBOAT MOVE PLANNINGmemi.gov.bn/Shared Documents/HSSE/Information...
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RIG & LIFTBOAT MOVE PLANNING & EXECUTION
NameTitleCompany Name
Presented by: Capt Bjarke PedersenDeputy Director, Fleet Operations
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Lessons Learned from Incidents
Lessons Learned from other Jackup Incidents
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Key Assessment Criteria & Information
Teras Internal procedures in place for the Unit Specific Operations Manual
Key details including dimensions, number of legs, weigh,. Jacking system, pre-load details, wind areas etc.
Location Assessment / Site Specific AssessmentWater depth, Metocean conditions, airgap
seabed (topographic, debris, etc) and sub-seabed data (strength of soil)
Operations Time of year & duration of proposed operations, nature of operations.
Crane serviceable range, accommodation requirements
Verified by Marine Warranty Surveyor (MWS) with Certificate of Approval.
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Control Measures in place
Conduct of Geophysical & Geotechnical Survey
Suitability Checks Methods
Rig Strong Enough
- Based on site specific metocean & soils data- Within limited operating envelopes- Structural integrity checks
Legs Long Enough - Subject to the following- Rig stated operating water depth- Sufficient height for harsh metocean- Leg penetration
Location Hazards/ Position
- Avoid overlapping old footprint where possible- Avoid seabed debris- Hull is above extreme water level- Spudcan to platform / pile proximity - Hull / platform proximity afloat
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Rig Strong Enough
Bearing Capacity
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Reserve of leg above jack-house
Water depth
Leg penetration
Air gap
Legs Long Enough
Does it fit?Max predicted penetration
Water Depth
Air gap (min or per client)
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Location Hazards
Rapid spudcan penetration
Uneven seabed
Footprints
Debris
Pipelines & Cables
Boulders
Spudcan-pile interaction
Buried / infilled channels
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Location Hazards
Footprints
Uneven seabed
Pipelines & Cables
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Location Hazards
Uneven Seabed Debris
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Location Hazards
Boulders
Visible in bathymetry / debris survey
Boulders
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Location Hazards
Spudcan-pile Interaction
Safe distance from the existing leg structure
Piled foundation structural integrity interaction
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Location Hazards
Buried / Infilled ChannelsDifferent penetration response
Excessive penetration
Eccentric loading
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Rig Strong Enough
Spudcan Penetration Responses
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Rig Move Procedure
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Approach Plan
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Final Position
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Side Profile
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Teras OffshoreLiftboat Simulation Training
Manoeuvring & Bridge Resource Management Training
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Lift Boat Simulation Training Centre (LSTC)
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Lift Boat Simulation Training Centre (LSTC)
Simulator assessment of candidates supported by feedback from other departments, e.g. Technical, Crewing, Operations and HSE.
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Lift Boat Simulation Training Centre (LSTC)
Scenarios designed based on Competency Requirements.
Scenarios include environmental factors, i.e. wind, current, swell height.
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Lift Boat Simulation Training Centre (LSTC)
Visual aids to facilitate trainee’s learning.
Trainer’s feedback and comments during and immediately after trainee’s session.
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