What does a blue chem. light signify?

A blue chemical light signifies moving parts or equipment, which serves as a critical safety indicator in environments where machinery is in operation. The purpose of this color coding is to alert personnel to be cautious and aware of their surroundings, particularly around machinery that may be in motion or subject to activation. The blue color is recognized as a standard marker, helping to ensure that individuals maintain a safe distance and do not inadvertently place themselves at risk of injury due to unexpected movement of equipment. This understanding is vital for maintaining a safe working environment in various industrial or training settings.