COMPLEMENTARY LOCKING SYSTEM FOR LOCKING LEGS TO THE DECK OF AN OFFSHORE DRILLING PLATFORM AND METHODS OF INSTALLING ONE SUCH LOCKING SYSTEM

摘要

THE INVENTION RELATES TO AN ADDITIONAL LOCKING SYSTEM FOR LOCKING THE LEGS ON A DECK OF A JACK-UP OFF-SHORE OPERATING PLATFORM. THE SYSTEM COMPRISES, AT EACH LEG,AT LEAST ONE ASSEMBLY (30) COMPRISING PLATES (32) FORMING TWO COUNTER-RACKS (31) INTENDED TO MESH WITH A RACK BELONGING TO THE LEGS AND, ON THE SAME SIDE OF THE PLATES (32), AT LEAST ONE INTERNAL ELEMENT (40) FOR CONNECTING THE INTERNAL EDGES (32A) OF THE PLATES (32), AT LEAST ONE EXTERNAL ELEMENT (45) FOR CONNECTING THE EXTERNAL EDGES (32B) OF THESE PLATES (32) AND AT LEAST ONE INTERMEDIATE COMPONENT (50) FOR CONNECTING THE SAID AT LEAST ONE INTERNAL ELEMENT (40) TO THE SAID AT LEAST ONE EXTERNAL ELEMENT (45). FURTHER SUBJECTS OF THE INVENTION ARE METHODS FOR FITTING THIS ADDITIONAL LOCKING SYSTEM TO THE LEGS OF A JACK-UP OFF-SHORE OPERATING PLATFORM.