During, a construction project for an expansion of a local tank farm. You will be the safety manager for a general contractor. The first stage will be general leveling and installing of storm sewer and drainage control followed by footings and pouring's of pads for large tanks. At least two tanks will support a process from the adjacent plant. Yes or no: Dearing, one stage of construction, a welding team will work inside one of the tanks to construct a system of tubes for temperature control. The tank is 12 feet tall. Although the tank will not be connected to any piping system, that would allow a fluid to enter the nature of natural ventilation limits airflow. Hatch openings in pipe. Connection openings will be used to ventilate the tank. Will you treat this as a PRCS