SAIT 1st Year Plumbing Practice Exam

Class D materials are identified using yellow. This classification system is part of the color-coding used in various industries to indicate the type of hazards materials may present. Class D specifically refers to combustible metals, such as magnesium, which require distinct handling and fire extinguishing techniques due to their unique combustion characteristics. The use of yellow for this class serves as a clear visual warning, helping workers and responders quickly recognize the potential dangers associated with these materials.