What is the minimum distance to stay away from working hydrants when performing maintenance?

The correct choice is ten feet as the minimum distance to stay away from working hydrants during maintenance. This guideline is in place to ensure safety and to allow sufficient space for emergency responders and maintenance personnel to operate effectively without obstructing access to the hydrant. Being within this proximity could hinder operations in case of an emergency or create hazards for individuals performing maintenance work.

Additionally, maintaining this distance helps to prevent any interference with the equipment or safety features associated with the hydrant, ensuring that it remains fully operational and accessible when needed. In essence, this rule is geared towards promoting safety and efficiency in areas where fire hydrants are critical infrastructure.