When a worker is working alone, how often must checks be conducted according to the regulations?

• A. 1 hour
• B. 2.5 hours
• C. 3 hours
• D. 4 hours

Answer: (B)

According to regulations, when a worker is working alone, checks must be conducted every 2.5 hours to ensure their safety and well-being. This specific time frame is established to balance the need for regular monitoring with the practicalities of autonomous work. Conducting checks at this interval allows for timely intervention in case of an emergency while also providing sufficient independence for the worker during their tasks.

Using a longer interval, such as 3 or 4 hours, could potentially increase the risk if an incident occurs, as it would delay any necessary assistance. Conversely, shorter intervals, like every hour, might be impractical in certain situations, where the workflow could be interrupted too frequently. Thus, 2.5 hours represents a well-considered approach to maintaining safety without imposing excessive constraints on the worker's responsibilities.