Which lean tool is Tiffany using when indicating the status of the CT scanning suite with lights?

The use of lights to indicate the status of the CT scanning suite is an application of the Andon tool in lean practices. Andon refers to a system that provides visual signals to communicate the status of a process or area, enabling quick identification of problems. By using colored lights, such as green for normal operations and red for issues, Tiffany is enhancing visibility and promoting immediate awareness among staff about the operational state of the CT suite. This allows for faster response times and more efficient management of workflow, which aligns with lean principles of reducing waste and improving process efficiency.

The other options focus on different aspects of lean methodology. SMED, which stands for Single-Minute Exchange of Die, is aimed at reducing setup times for processes. Heijunka is about leveling production to reduce batching and uneven workflow. The Five Ss are a methodology for workplace organization and standardization. None of these tools directly relate to the use of visual signals for status reporting, making Andon the most applicable choice in this scenario.