Safer Together: Working with rotating equipment

What Happened?

 A carousel sea fastening turnbuckle height needed to be adjusted to align with the padeye. 

The bottom section of the turnbuckle was not rotating freely. Crew deviated from instructions by lowering the turnbuckle into a 60 degree resting position and rotating the top section, instead of rotating the centre section in the upright position. 

When the stop section was rotated, a 38kg pin was dislodged from its housing and fell 3.4m missing someone by about 400mm.

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