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Fire Safety

Transcript: How are fires created and how should you extinguish them? The learners will be able to analyze the parts of a fire via the fire tetrahedron. Chain Reaction The learners will be able to assess and determine the type of fire extinguisher to use based on the fuel source. Summary What are the elements? What are sources of heat? What are sources of fuel? Fire Tetrahedron Class C This is a substance which can undergo combustion such as: wood paper other cellulostics Fire Safety A Sweep from side-to-side rising carbon atoms emit light How is a fired started? This is normally in the form of air and is an oxidizing agent. S Class K Squeeze the operating handle Class B click the link combustible metals Learning Objectives lack of oxygen How to Use Fire Extinguishers Class D Pull the pin. Classifying Fuels The source of energy that heats the fuel source to an ignition temperature such as: electrical current heating equipment flame/sparks lightning Products of Combustion any combustible material & electrical equipment Types Class B - gasoline, oil, oil based paints, etc. What extinguisher's should you have? What are the steps to operating an extinguisher? Class C - energized electrical equipment, wiring, fuse boxes, appliances, etc. Fire Extinguishers S flammable gases, liquids, greases Aim at the base of the fire released engergy Oxygen For a fire to ignite it needs 4 parts Class A - wood, cloth, paper, etc. Certificate of Completion The Fire Tetrahedron cooking oils Fuel Source Fire Extinguishers Heat Smoke Gases Light carbon dioxide, monoxide Test Your Knowledge wood, paper, rubber, coal, plastic Heat Source Class A P The exothermic reaction sustains the fire as long as the elements are present. Class D - combustible metals.

Fire Safety

Transcript: Fire Safety Fuels Kerosene-(aka: paraffin) Safest liquid fuel for fire props/least explosive Why: Burns at lower temperatures. (Longer burn/Shorter flame) Scented/unscented lampoil is kerosene Coleman Fuel/Lighter Fluid Consist of naphtha--> more volatile than kerosene/more likely to explode Why: Burns at higher temerpatures (Shorter burn/Bigger Flame) One CANNOT dip blown-out still smoldering torches because it will set your fuel jar on fire. Even just approaching yout fuel with smoldering wicks can cause your fuel to explode. Extinguish all smoldering and wait at least 30 seconds to recharge wicks. Mix of the two Mix of kerosene and naptha--> Fuels are still toxic. (Mild flame/Mild burn time) Gasoline/Paint Thinner/Airplane Fuel Highly volatile and toxic In hot and humid temperatures, gasoline fumes do not readily disperse and can be ignited as much as 30 min. after it is stored. Grain Alcohol produced by fementation; e.g., beer, wine, liquors, etc. Beverages with an alcohol content of 60% > can be used with fire props, but produce a weak flame (Some fire beathers may chose to use this to avoid toxic posioning, but blowbacks are just as likely) Burns How to recognize a burn: 1st DEGREE- redness in area, mild discomfort, may have mild blistering. Much like a sunburn. 2nd DEGREE-bright redness, moderate to severe, blistering. 3rd DEGREE-The most serious burns are painless and involve all layers of the skin. Fat, muscle and even bone may be affected. Areas may be charred black or appear dry and white. Treatment Minor Burns- include 2nd degree burns limited to an area no larger than 2 to 3 inches in diameter: Cool the burn. Hold the burned area under cold running water for at least 5 minutes, or until the pain subsides. If this is impractical, immerse the burn in cold water or cool it with cold compresses. Cooling the burn reduces swelling by conducting heat away from the skin. Don't put ice on the burn. Cover the burn. Cover with a sterile gauze bandage. Don't use fluffy cotton, which may irritate the skin. Wrap the gauze loosely to avoid putting pressure on burned skin. Bandaging keeps air off the burned skin, reduces pain and protects blistered skin. 1st degree burns may be treated with a light application of Aloe. While a burn cream or aloe may reduce stinging in 2nd degree burns. Do not use large amount of either of these. Take an over-the-counter pain reliever. These include aspirin, ibuprofen (Advil, Motrin, others), naproxen (Aleve) or acetaminophen (Tylenol, others). Never give aspirin to children or teenagers. Major Burns MAJOR BURNS- Call 911 or Emergency Services Do not remove burnt clothing. However, do make sure the victim is no longer in contact with smoldering materials or exposed to smoke or heat. Don't immerse severe large burns in cold water. Doing so could cause shock. Check for signs of circulation (breathing, coughing or movement). If there is no breathing or other sign of circulation, begin cardiopulmonary resuscitation (CPR). Cover the area of the burn. Use a cool, moist, sterile bandage; clean, moist cloth; or moist towels. Safety Towels How to Extinguish a Fire: For the majority of tools, the best to extinguish a flame is to lay the towel on the ground and set the tool in the center and wrap it like a burrito. Folding over one side of the towel and then the other. Press the towel in around the wick it in an effort to eliminate all the air. *During this process do not lean over the top of this as there can some times be flash back and wicks may relight them selves if not fully extinguished once they are re-exposed to oxygen. Fire Extinguisher How to use a fire extinguisher: Remember this mnemonic P A S S Pull the Pin at the top of the extinguisher. The pin releases a locking mechanism and will allow you to discharge the extinguisher. Aim at the base of the fire, not the flames. This is important - in order to put out the fire, you must extinguish the fuel. Squeeze the lever slowly. This will release the extinguishing agent in the extinguisher. If the handle is released, the discharge will stop. Sweep from side to side. Using a sweeping motion, move the fire extinguisher back and forth until the fire is completely out. Operate the extinguisher from a safe distance, several feet away, and then move towards the fire once it starts to diminish. Be sure to read the instructions on your fire extinguisher - different fire extinguishers recommend operating them from different distances. Remember: Aim at the base of the fire, not at the flames!!!! *A typical fire extinguisher contains 10 seconds of extinguishing power. This could be less if it has already been partially discharged. Always read the instructions that come with the fire extinguisher beforehand and become familiarized with its parts

Safety PowerPoint

Transcript: Gabby Lee Let's Talk about safety - Never work with chemicals or lab equipment unless a teacher instructs you to do so! Safety first! Steps to being safe when Experimenting Reminder! Introduction - Never work alone or without a teacher present!! This is the easiest way to avoid an accident happening (-: Standards - Be very alert and cautious, so please IMPORTANT!! 1 Avoid eating/drinking when experimenting 2 Do NOT play pranks when experimenting 3 Avoid using your cell phone or listening to music when experimenting If we use chemicals, read the label carefully!!! OOPS! Step 1 Essential understandings - A friendly reminder when mixing chemicals or conducting the experiment keep the test tube away from your: Essential understandings FACE!!! MOUTH!!! AND BODY!!! - Never put these back into the original bottle. Let the teachers handle the chemical disposal! Unused Chemicals Equipment - Examine the glassware before using! Do not use chipped or cracked test tubes or beakers! Step 2 - What do I wear when experimenting?? Procedure Step 3 Warm-up activity Are these appropriate? Warm-up activity Appropriate? - Loose clothing, sandals, open-toed shoes, loose hair NO! Those Are not safe at All So, what should I wear? - Wear your safety goggles!!! We do NOT want any chemicals or harmful things going into your eyes. Step 1 Step 1 - Wear a lab coat!! No chemicals can touch your skin and burn you! Step 2 Step 2 - Think you've got the hang of it? Assessment Step 4 Assessment activity - Two truths and one lie, identify the lie. Assessment activity 1 1 - I have to wear safety goggles and a lab coat. 2 3 - I can wear any shoes that I want. - I need to examine the glass beakers or test tubes before using them. Assessment activity Two truths and one lie, again. Identify the lie. Assessment activity 2 1 2 3 - I am allowed to run around while experimenting. Nothing can go wrong. - A teacher must be present when experimenting. - I need to read all labels carefully. Step 5 - If any accident happens to take place, do not panic. Just inform a teacher immediately and we will help you!! Happy experimenting (SAFELY)!!! Notes

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