Final answer:
The use of temperature actuated mixing valves for emergency eye wash stations is indeed required to maintain safe water temperature and is True. The labeling of faucets with red for hot and blue for cold is consistent with Wien's law, which correlates color to the temperature-related radiation wavelengths.
Step-by-step explanation:
The statement that an emergency eye wash supplied with hot and cold water should be controlled by a temperature actuated mixing valve complying with ASSE is True. Emergency eye wash stations must have a controlled flow of tepid water to ensure that they can be used comfortably and safely for a prolonged period, typically 15 minutes, in the event of a chemical exposure. The temperature actuated mixing valve ensures that the water is neither too hot nor too cold, which could either scald the eyes or discourage a person from using the station for the necessary duration due to discomfort.
Addressing the question about the labeling of water faucets related to Wien's law: It does make sense to label the faucets with a red dot for hot water and a blue dot for cold water. Wien's law states that the peak wavelength of thermal radiation is inversely proportional to the temperature, meaning that hotter objects will emit radiation with shorter wavelengths, which we perceive as more red. Conversely, cooler objects emit radiation with longer wavelengths, which we associate with the color blue. Hence, the red and blue labeling intuitively aligns with the fundamental physics described by Wien's law.