Work-at-height, vented climbing helmets (Type 1, Class C) allow air to circulate to keep workers cool and have a chinstrap that keeps the helmet in place if a fall or impact occurs. Helmets enclose the back and sides of the head to protect against impact as the result of a fall. Type 1 helmets protect the head from vertical impacts caused by falling objects. Vents on Class C helmets provide a clear path for electrical arcing, so they should not be used in locations where electrical hazards are present.
Hard hats and helmets protect the wearer from hazards that impact the head. They have a suspension system that moves the impact force though the body to feet, helping to reduce strain to the head, neck, and spine. These hard hats and helmets are ANSI rated and OSHA compliant. Types and classes combine to indicate the impact type (vertical only or vertical and angled) and level of electrical protection (none, low voltage, or high voltage) provided. Hard hats and helmets should be inspected regularly for structural integrity. Hard hats are used by construction workers, road crews, or where required by OSHA safety regulations.