HSE Offshore Information Sheet 02/2013 – Drill-Floor Machinery and Tubular-Handling Safety (link)
This Information Sheet provides guidance on managing risks related to drill-floor machinery and tubular-handling equipment. Collisions and other dangerous interactions may occur between equipment and workers, between equipment and structures, between different items of drill floor equipment or within the equipment itself. Such events often cause damage resulting in objects falling from height and presenting further hazards to drill floor personnel.
This Sheet promotes a systematic and holistic approach to managing drilling machinery system safety and to identifying potentially dangerous interactions and occurrences.
Source: HSE