EYE & HEARING PROTECTION REFRESHER NOTES: This symbol ▼ indicates you need to click the mouse before reading the next line or slide. Statements in Italics are meant as a guide for you, a recommendation of what to do. The word DISCUSSION indicates that the slide content is organized in a Question and Answer format. After you read each question, have students shout out the answers or call on students. Repeat answers as needed so everyone can hear them. “----” indicates a short pause to give students time to answer the question. The words in bold appear on the slide. -----------end NOTES------------------ Today we are going to talk about protecting your eyes and hearing. Remember, this information applies to you at school, work and home. ▼

Eye Hazards Machines: Tasks: Hazards: metal particles, UV light, dust Lathes Drill presses Grinders Sanders Tasks: Milling Boring Grinding Cleaning with compressed air Welding DISCUSSION: Which tasks or machines generate ‘eye’ hazards in a metal working shop ? ----- ▼ Machines: lathes, drill presses, sanders, grinders. ▼ Tasks: milling, boring, grinding, welding, cleaning with compressed air Mention other machines and tasks in your lab or other shops. ▼ DISCUSSION: What are the hazards associated with each task? ---- ▼ Hazards: Metal particles, UV light, dust ▼ Hazards: metal particles, UV light, dust

Types of Eye Protection Safety Glasses Goggles Regular Prescription Glasses In order to protect your eyes from the hazards we just discussed, you must wear eye protection. The 2 main types are: ▼ Safety glasses with side shields and ▼   Safety goggles. Goggles seal against the face. Depending on the design, they provide protection from particles and/or liquid splashes. ▼ Remember, regular prescription glasses are not safety glasses. You can either wear safety glasses or goggles over your prescription glasses, or you can purchase prescription safety glasses. DISCUSSION: When is eye protection required in the lab? --- Talk about the rules in your shop, discuss discipline & other related issues. ▼

Safety Glasses Prescription safety glasses DISCUSSION: What imprint must be stamped on safety glasses to know that they meet the ANSI standard for impact resistance? And where will you find this imprint? ---- ▼ The frame or lens of your safety glasses must be stamped with the imprint “Z87”. In addition the manufacturer’s identification or Z87 must be on the lens. ▼   Prescription safety glasses

Eye Protection Does your eye protection fit? DISCUSSION: How can you tell if your eye protection fits? ---- ▼ The bigger the gap between your face and the corner of the glasses – the greater the chance that particles can reach your eyes. The style, design and size will influence the size of the gap. ▼ A top shield and adjustable temples will provide a better fit and better protection. In addition, adjusting the temples and the bridge design can also make the glasses more comfortable. Notice in the photo on the left that the person is wearing safety glasses with a face shield. Safety glasses must be worn if the face shield does not have a ‘Z87’ imprint. ▼

What should you do with your safety glasses at the end of the day? Clean your eye protection Check for damage Store eye protection properly DISCUSSION: What should you do with your safety glasses at the end of the day? ----▼ Clean your eye protection. In order to prevent scratching the lenses, first rinse them and then clean with soap and water. ▼ Check your eye protection for damage. ▼ Store eye and face protection properly to protect the lenses from scratches and dirt. ▼

Prolonged exposure to noise above 85dB can damage your hearing! How do you know when a sound is too loud? Prolonged exposure to noise above 85dB can damage your hearing! DISCUSSION: How do you know when a sound is too loud? ---- Without using a noise meter, the rule of thumb is: IF you need to raise your voice so that someone standing three feet away understands what you are saying - you are working in a noisy environment. When noise levels are measured, OSHA defines “noise” as sounds at or above 85 decibels, or dB. ▼ Prolonged noise above 85dB can damage your hearing! ▼

Noise Sources Machines: Processes: Hydraulic press Grinders Band saws Cleaning surfaces with compressed air Discharging metal parts into bins Stamping DISCUSSION: Which machines or tasks in a metal working shop can generate high noise levels? ---- Noise sources that are loud and may harm your hearing include: ▼ Machines such as hydraulic presses, grinders, and band saws ▼ Processes such as cleaning surfaces with compressed air, discharging of metal objects into metal bins, and stamping. DISCUSSION: Think about other loud noises you might encounter in the shop and at home. What comes to mind? ----- Mention other machines and tasks in your lab or other shops. ▼

Noise Levels Familiar Sounds Machines* 115 dB  Power press Chainsaw 110 dB 109 dB  Grinder 100 dB  CNC punch press 95 dB  Metal cutting saw Lawnmower  90 dB 85 dB = LOUD Conversation  60 dB * Highest level measured   This chart shows typical noise levels for familiar sounds and work tools. Remember, noise above 85 decibels is harmful. However, noise-induced hearing loss is preventable! ▼

Symptoms of Hearing Loss Regularly needing to turn up the volume on the radio or TV Difficulty following a conversation in places with background noise (restaurant, bar, a family gathering) Difficulty understanding words that sound similar (dart vs. cart; prey vs. tray, claim vs. blame) Unable to hear people clearly on the phone Unable to hear the phone ringing in a quiet room DISCUSSION: What are some symptoms associated with hearing loss? ---- Some of the symptoms you might experience include: ▼ Regularly needing to turn up the volume on the radio or TV ▼ Difficulty following a conversation in places with background noise (such as a restaurant, bar, or at a family gathering) ▼ Difficulty understanding words that sound similar (for example: dart vs. cart; prey vs. tray, claim vs. blame) ▼ Unable to hear people clearly on the phone ▼ Unable to hear the phone ringing in a quiet room. DISCUSSION: Have you ever experienced any of these symptoms? If so, when? Have you noticed that once you begin losing your hearing, it becomes harder to communicate? -----▼

Hearing Protection Equally effective Must fit properly Noise-induced hearing loss is 100% preventable! Equally effective Must fit properly Must be worn consistently! DISCUSSION: Noise-induced hearing loss is 100% preventable. How can YOU protect yourself from noise? ---- ▼ You can protect your hearing by wearing ear muffs or ear plugs. There are many styles of each of these. ▼ Both are equally effective at reducing your exposure to noise. Whatever hearing protection you chose to wear, be sure it fits properly and you use it consistently. Don’t forget to clean, inspect and properly store your hearing protection after each use! ▼

Summary Eye protection must be stamped with “Z87” Eye and hearing protection must fit and be used correctly Clean, inspect and properly store your safety glasses & hearing protection Noise-induced hearing loss is 100% preventable! In Summary: ▼ Eye protection must be stamped with the “Z87” imprint ▼ Eye and hearing protection must fit and be used correctly ▼ Clean, inspect and properly store your safety glasses & hearing protection ▼ Noise-induced hearing loss is 100% preventable! ▼

Questions? Do you have any questions?