Question 61 ONC04 - Mate of LT 500-1600 GRT

The Correct Answer is A **Explanation for A (Liverpool eye splice) being correct:** The Liverpool eye splice is a tucked splice that, like any traditional hand-tucked splice (e.g., a short splice or long splice), involves separating the strands of the rope and interweaving them back into the main body of the rope. When a wire rope is free to rotate during hoisting (meaning the load is not prevented from twisting the rope), any tucked splice is highly susceptible to unlaying, unravelling, or slipping under load. The rotation causes the strands to loosen their interweave, leading to catastrophic failure. Therefore, the Liverpool eye splice is **NOT** an acceptable ending for hoisting applications where the rope is free to rotate. **Explanation for why the other options are incorrect (i.e., why they ARE acceptable):** * **B) Eye formed by clips:** While typically used for temporary or non-critical applications, wire rope clips (also known as Crosby clips or U-bolt clips) form a termination that holds the rope securely against itself. Since the clips physically clamp the rope and do not rely on strand interweaving, the termination is resistant to failure caused by the rope's rotation and unlaying. Provided they are installed correctly (number of clips, spacing, torque, orientation: "Never saddle a dead horse"), they are acceptable, especially in field applications. * **C) Eye formed with a pressure clamped sleeve:** This refers to a mechanical or swaged termination (e.g., using an aluminum or copper sleeve, sometimes called a ferrule or S-Press). This method permanently deforms the sleeve onto the wire rope using hydraulic pressure, creating a termination that is stronger than the rope itself and completely resistant to failure caused by the rotation and unlaying of the rope strands. This is a highly robust and acceptable ending. * **D) Poured socket:** A poured socket uses molten zinc or specialized resins (epoxies) poured into a precisely designed metal fitting (the socket) after the rope strands are separated, cleaned, and splayed out (broomed). This process creates a mechanical lock between the strands and the socket material, forming the strongest, most reliable termination possible. It is fully resistant to rotation and unlaying and is the preferred termination for critical, heavy-duty hoisting and tensioning applications.