risk assesment - the process of examining the risks involved in a planned activity, crane - a tall metal structure with a long horizontal part, used for lifting and moving heavy objects, oil rig - a large structure with equipment for removing oil from under the ground, especially from under the sea, vice - a tool with two parts that can be moved together by tightening a screw so that an object can be held firmly between them while it is being worked on:, ear defenders - a pair of pieces of thick material that cover or block the ears to protect them from being damaged by loud noise, corridor - a long passage in a building or train, especially with rooms on either side:, exposure - the fact of experiencing something or being affected by it because of being in a particular situation or place:,

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