IB22 was developed for use in inspections of electrical equipment, including Scope 8, Scope 10, Scope 12, NEN 1010, and NEN 3140. It employs a color-coding system with four colors—red, orange, yellow, and blue—to indicate the current urgency level of the equipment. Red denotes a very serious finding with a constant risk of injury and/or fire, while blue signifies minimal risk.