12.1.2.1-2 Relative Humidity

The climate control system should maintain the relative humidity in the control room in the range of 30 to 70 percent, with 40 to 45 percent preferred. The design goal for relative humidity should be 45 percent for an ambient temperature of 21–25 degrees C (70–77 degrees F).

Additional Information: A minimum relative humidity of 15 percent should be maintained to prevent irritation and drying of body tissues; for example, eyes, skin, and respiratory tract.1472G, HFDS