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Vedam VEDAM DESIGN & TECHNICAL CONSULTANCY PVT. LTD. 504-506, Acropolis, Military Road, Marol, Andheri (E), Mumbai-59, INDIA + 91-22-67109192, +91-22- 67257237 vedam@vedamindia.com, www.vedamindia.com Design & Technology Center
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Vedam Challenges in present Station Keeping Mooring Analysis … A glance Mooring Analysis – Usage Mooring Analysis – Stages, Categories Advantage with FUGRO-Vedam collaboration
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Design & Technology Center Vedam Complex platform and sub-sea infrastructure Vessel positioning in close proximity to assets Stringent safety requirement Longer mooring durations Operational requirement: gangway connections, helicopter operations Vessel response under accidental damage of a line Support vessel’s movement in close proximity to barge Unconventional requirements: Connection to Jacket leg, DP buoys etc.. MOORING ANALYSIS IS A TOOL TO SIMULATE COMPLEX NATURE OF STATION KEEPING TO ENSURE SAFETY AND REDUCE RISK DURING OFFSHORE OPERATION
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Design & Technology Center Vedam
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Design & Technology Center Vedam Field Survey Anchor Pattern Mooring Analysis CLIENT/MWS
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Design & Technology Center Vedam
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Design & Technology Center Vedam Motion analysis & determining RAO Modelling of mooring pattern Quasi-static Mooring Analysis (equilibrium position) Rule Check as per API/ISO/DNV Standards
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Design & Technology Center Vedam Catenary shape & positioning of mooring buoy o Safe vertical distance from sub-sea pipelines o Limiting anchor loads o Chain lengths for DP buoys One line Damage analysis o Limiting line tensions o Limiting vessel excursions
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Design & Technology Center Vedam Transient analysis o Vessel trajectory after breakage of a line o Maximum vessel offsets from platform/assets. Detailed Report and Anchor Pattern with catenary diagrams,
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Design & Technology Center Vedam Derivation of exact catenary shapes Correct estimation of distance between subsea structure and mooring lines/anchors. Mooring optimization to meet stringent safety requirement Stabilisation of vessel motion, excursion Clash Check Usage of Damage Prevention Buoys Derivation of limiting weather Vessel Relocation Capability
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Design & Technology Center Vedam Deployed wire length Initial tension in the wire Load on Anchor Location and size of DP buoys Load on vessel’s mooring fittings Safe navigation zone around moored vessel
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Design & Technology Center Vedam Limiting Vessel excursion Distance from pipe lines Distance from floating bodies Uneven distribution of spread mooring Support from Jacket Leg
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Design & Technology Center Vedam Effect of different directional weather Effect of extreme weather condition Effect of one line damage condition Limitation to excursion Factor of Safety of anchor, line & mooring fittings
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Design & Technology Center Vedam Limiting vessel roll & pitch motion Limiting vessel’s heave motion for Better habitability Safe operation of gangway, crane etc Safe platform repair work Limiting vessel excursion For position keeping for subsea repair work
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Design & Technology Center Vedam Platform to barge safe distance Anchor to pipe line distance Across the pipe Along the pipe Mooring line to subsea pipe distance Line to line distance in cross mooring Distance from platform helideck or flare
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Design & Technology Center Vedam DP Buoy parameters for effective lifting of mooring line Location Capacity or size Buoy chain length Catenary shape with effect of DP buoys Optimum usage of DP buoys
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Design & Technology Center Vedam Analysis with extreme weather condition Derivation limiting weather condition for safe working condition Contingency plan beyond limiting weather
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Design & Technology Center Vedam Transient Analysis for relocating the vessel Line tension and catenary for relocation operation Weather condition for safe relocation operation
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Marine Consulting | Basic Design | Production Design | Conversion Design | New Building & Repair Supervision | Stability Analysis | Structural FEM Analysis | Mooring Analysis | Shipboard Manuals | Inclining Experiment | Vedam Design & Technology Center VEDAM DESIGN & TECHNICAL CONSULTANCY PVT. LTD. 19 THANK YOU @ VedamDesign @ linkd.in/VedamDes vedam@vedamindia.com
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