Each individually manufactured crane is constructed to handle a specific range of weight. Loads lifted by cranes should never exceed manufacturer-suggested load limits. Lifting a load that is above the crane's recommended load limit can cause the crane to tip over. Crane components also are likely to break while under excessive pressure. Loads that exceed the rated lifting capacity of a crane should never be prepared for that particular crane.
An average of about 15 people are electrocuted each year when cranes lift loads into active power lines, according to the National Institute for Occupational Safety & Health. When cranes are forced to lift loads near power lines, a spotter should be in place to act as a second pair of eyes. The spotter warns the crane operator when loads move dangerously close to a power source.
Performing inspections at a regular intervals ensures that all crane components are operating properly, which decreases the risk of injuries and accidents. To avoid electrocution, many cranes are equipped with anti-current devices. To prevent tipping, many cranes feature anti-upset devices.