Abstract:
Disclosed is a mooring system of a mining ship. The mooring system includes a cargo hold storage provided in a hull to accommodate detachable cargo hold, and an electromagnet unit installed on the cargo hold storage to detachably connect the detachable cargo hold to the hull. Since the electromagnet unit is installed on the hull to moor the detachable cargo hold, the mooring system can control the six degree of freedom motion of the ship at once, can remarkably reduce the berthing time and the deberthing time, and can minimize manpower input required for the berthing. If the detachable cargo hold is inserted in the cargo hold storage, the electromagnet unit is withdrawn from the hull, thereby effectively preventing damage caused by the collision between the electromagnet unit and the detachable cargo hold.
Abstract:
PURPOSE: A tension adjusting device and a tension control system of the tendon at a TLP(tesnioned leg platform) are provided to control tension in real time by the selection of remote controllable equipment and to reduce manufacturing/working cost by the minimizing of the number of installation positions of an existing ballast system and a pump system. CONSTITUTION: A tension adjusting device of the tendon at a TLP(tesnioned leg platform) comprises a motor(M) and a tendon tension adjusting unit(240). The motor generates forward or backward rotating movement depending on a signal. The tendon tension adjusting unit is installed on the end of the tendon. The tendon tension adjusting unit converts forward and backward rotation by the motor to translating movement to vary the tension of the tendon. The tendon tension adjusting unit controls the length of the tendon by raising or lowering the tendon by the translating movement using a screw jack. The tendon tension adjusting unit controls the length of the tendon by raising or lowering the tendon by the translating movement using a turn buckle.
Abstract:
The present invention relates to a mooring system of a tension leg platform (TLP) and, more specifically, a mooring system of a TLP which is provided to have risers installed inside a tendon, thereby preventing the risers from colliding with each other or being damaged by fatigue due to an external force such as tidal current and wind; to reduce vortex induced vibration (VIV) generated around the risers by the tidal current, thereby extending the fatigue life of the riser; and to significantly reduce hours for installing the riser, thereby saving hours and expenses required for marine construction. The mooring system of a TLP according to the present invention comprises: a tendon which is connected to the hull of the TLP and fixed on the seabed and which has a hollow therein; and a riser which is installed inside the hollow of the tendon and which includes a riser providing a fluid passage for drilling.