Australian Standard AS/NZS 1900-1998 'Occupational protective helmets - Selection, care and use' indicates the importance of choosing an appropriate hat or helmet for the workplace.
Hard hats are required to resist penetration by objects, absorb the shock from a blow to the head by an object, be slow to burn and be water-resistant. A hard hat should be worn in any workplace where an individual may:
- Be struck on the head by a falling object.
- Strike his/her head against a fixed object.
- Inadvertently come into contact with electrical hazards.
All safety helmet components and accessories should be visually inspected prior to use by the wearer for signs of dents, cracks, penetration or other damage due to impact, rough treatment or unauthorised alterations which could reduce the degree of safety provided.
Helmets showing damage or deterioration to the shell should be immediately withdrawn from service and discarded (completely destroyed). Helmets with sound shells but with damaged or defective harness components should be withdrawn from service and the complete harness and cradle replaced.