Hard Hat Safety Birth of the Hard Hat The steel helmet World War I vet Edward Bullard used the steel helmet he wore in WWI as the inspiration for the hard hat. Designed to protect miners from falling objects. The first hard hat, the “hard-boiled hat,” was patented in 1919. It was made of canvas and resin. Birth of the Hard Hat 1933- a face shield with a window for vision was incorporated to meet workplace needs. 1938- Aluminum hard hats were introduced; improving durability with less weight 1940’s- Fiberglass used for hard hat construction 1950’s- Hard hats manufactured from thermoplastics Personal Protection Hard hats protect against against impacts from falling objects or debris, electrical shocks and burns, penetration and flammability. Personal Protection Protects your face, head, neck, and shoulders against splashes, spills, and drips. Personal Protection The rigid shell of the hard hat will resist and deflect an impact to the head. The suspension system located inside the hard hat will absorb shock. The suspension should suspend the shell 1 1/4” for shock absorption and ventilation When to Use a Hard Hat? When a person may be struck on the head by falling objects. If a person could strike their head against a fixed or protruding object. If contact may be made between the head and electrical hazards. When it is required Types & Classes TYPE I - protects the top of the head from penetration and impact (typical hard hat) TYPE II - provides some protection for the top of the head and off- center CLASS C-Used in special services; do not provide voltage protection; designed for comfort and impact protection Types & Classes CLASS E (Previously Class B)- Used for electrical work; protects against falling objects as well as reduces the dangers involved with exposure to high voltage electrical shocks and burns. CLASS G (Previously Class A.)- Intended for general use; provide protection against falling objects and reduce the danger of exposure to low voltage electrical conductors. Suspension System Quick Slide/Pin-Lock (right)- slides to adjust, equipped with a locking mechanism Ratchet (left)- equipped with ratchet adjusting knob to adjust the fit Hard Hat Accessories Face Shields Ear Muffs Sun Shields Neck Shields Flashlights Safety Light Hard Hat Stats. Each year there are approximately 120,000 on-the-job head injuries; nearly 1,500 of them fatal. A head injury occurs every 15 seconds in the U.S. Head injuries are one of the most costly work place accidents, averaging more than $135,000 per claim. Hard Hats and ANSI In 1997, the American National Standards Institute revised its performance standards for protective hard hats. ANSI Personal Protection - Protective Headwear for Industrial Workers - Requirements ANSI Z89.1-1997. (latest revision) All ANSI-compliant hard hats must meet flammability criteria. Standards & Testing Hard hat samples are either cooled to 0｡F or heated to 120｡F for two hours before testing Type I Impact Test- drop 8-lb steel ball from 5 ft; must not transfer no more than 1,000 lb peak force Type I Penetration Test- drop 2.2-lb pointed steel penetrator from 8 ft; must not make contact with the head form Type II Impact and Penetration Test- drop helmeted head forms onto steel anvils and pointed steel penetrators. Standards & Testing Electrical Conductivity Testing Before 1997- hard hats were tested by measuring the current in bodies of water inside and outside the hard hat After 1997- hard hats tested using metal foil on opposite surfaces of the shell of the hat Hard hat must with-stand 20,000 volts for 3 minutes leaking less than 9 milliamps of current, followed by 30,000 volts without burning through Standards & Testing Flammability Test Hard hat is exposed to a 1,550｡F flame for 5 seconds. Five seconds after removing the test flame there must be no visible flame on the hard hat. Safety is no accident! When hard hats are required employees should know: Proper hard hat use (how to put on, wear, adjust, remove) When it is necessary to use a hard hat What kind of hard hats are necessary The limitations of hard hats in injury protection How to properly clean and maintain hard hat Hard Hat Maintenance Clean with hot water and antibacterial soap Check for wear in the shell- flaking, loss of surface gloss, deformation, cracking, perforations Check suspension systems for cracks, tears, fraying, or other forms of deterioration The Future of Hard Hats Changing helmet design by eliminating the need for sewing the suspension straps. Discovery of new materials that have better design qualities, such as higher strength and a greater resistance to heat, chemicals, and ultraviolet radiation Refine manufacturing techniques through new and advanced technology. Hard Hats Protection where it matters most.
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