Hard hat lifespan may vary depending on the conditions of each work site. Hard hats subjected to more wear and tear or used outdoors in direct sunlight may need to be replaced more frequently. Daily inspections are the best way to determine when to replace a hard hat shell, suspension, or the entire unit.
The type of protection you should choose depends on the study of the accidentology of the task (UV treatment of the plastic, presence or not of a chinstrap, addition of hearing protection or a cooling cap when working in full sun, etc.).The worker’s head circumference and the comfort of use of the helmet must also be taken into account.