Marine Structure Consultants
Pin & yoke type jacking system
◦Marine Structure Consultants 'GA 6800' Oil Rig Jacking System Electro Hydraulic Rig Jacking System including Containerized Switchboard and Control Unit
◦3 x Hydraulic Power Units
◦Jacking Capacity 4,300 Ton
◦Allowance For Leg Guide Friction 300 Ton
◦Dynamic Load 500 Ton
◦Design Load (LRFD) 5870 Ton
◦Locking Capacity (Two Rings) 7,800 Ton
◦Number Of Hydraulic Power Units 3 (1 per leg)
◦Electric Motor Capacity Per Leg 250 kW
◦Locking Capacity (Factored: Material Factor 1.15) in
◦Design Storm Condition with jacks Secured (Cylinders
◦Shimmed Off) Locking Capacity of Each Jack
◦Working Ring 5,100 tf
◦Holding Ring 5,100 tf
◦Working and Holding Ring Together 7,800 tf Jacking Pin Working Ring 1,700 tf
◦Jacking Pin Holding Ring 1,700ft
◦For Cylinder Support 1,300 tf
◦Leg Data Cross Section Circular
◦Diameter 3.5m
◦Wall Thickness Minimum 75mm
◦Yield Strength 690/N/mm2
◦Number Of Jacking Holes per cross Section 3 Diameter 460mm, Stroke 1.75m
◦Tolerance on Leg and Jacking Holes on Request Temperatures Applicable Maximum Ambient +35°C Minimum Ambient -10°C
◦Maximum Seawater +25°C
◦Design Temperature for Steel Components -10°C