Wear the helmet correctly and play the three functions of the helmet

When wearing a hard hat, it's essential to follow proper procedures to ensure maximum protection. Before putting on the safety helmet, adjust the rear adjustment system according to your head size and secure the chin strap properly. The cushioning pad inside is pre-adjusted at the factory, but it's important to ensure there is a vertical gap of about 25–50 mm between the top of your head and the inner part of the helmet. This space allows for effective shock absorption during impact and also improves ventilation. At minimum, this distance should not be less than 32 mm. The primary purpose of a helmet is to protect the worker’s head from falling objects. When an object strikes the helmet, the cap and the liner work together to spread the impact force over the entire surface of the skull. The helmet’s structure is designed to absorb most of the impact through elastic and plastic deformation in various parts, reducing the force that reaches the head to 4900 N or less. This helps prevent serious injury. To ensure the helmet functions as intended, it must be selected carefully and used correctly. Always choose a qualified helmet that meets safety standards and follow the manufacturer's instructions for proper use. 1. **Shock Absorption**: There should be a gap of 25–50 mm between the outer shell and the inner liner. When an object hits the helmet, the shell deforms slightly without directly impacting the head. 2. **Stress Distribution**: The helmet's shape—usually oval or hemispherical—helps distribute the impact force across the entire surface. This reduces the pressure on any single point and prevents localized damage. 3. **Biomechanical Protection**: According to national standards, helmets are tested to absorb up to 4900 N of force. This limit is based on human biomechanics; exceeding it can cause serious spinal injuries, including paralysis or even death. Before wearing the helmet, always inspect it for damage. Check if all parts are intact, the adjustment system is secure, and the straps are tight. Adjust the inner band so it fits snugly but comfortably. For high-altitude workers, make sure the chin strap and neck support are firmly fastened to prevent the helmet from slipping off. If the helmet has been struck and shows visible cracks or deformation, stop using it immediately and replace it. Most helmets have a lifespan of around three years. Even if no obvious damage is present, regular inspections are necessary to check for cracks, dents, or wear. Any helmet that has suffered a severe impact, even if it appears undamaged, should be discarded. Safety should never be compromised.

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