Why is Lab Safety Important? - PowerPoint PPT Presentation

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Why is Lab Safety Important?

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  1. Why is Lab Safety Important? Lab safety is a major aspect of every lab based science class. Lab safety rules and symbols are needed so that students do not injure themselves or their classmates.

  2. LAB SAFETY NOTES NSF North Mississippi GK-8

  3. Lab Safety Rules 1. Always follow the teacher’s directions and only do lab work when a teacher is present. 2. Conduct yourself in a responsible manner at all times. No Horseplay! .

  4. Lab Safety Rules 3. Do not touch any equipment, chemicals, or other materials until told to do so. 4. Do not eat food, drink beverages, or chew gum in the lab. Do not use lab glassware as food or beverage containers.

  5. Lab Safety Rules 5. Report ALL accidents to your teacher immediately, even if you think it is minor. 6. Follow the lab instructions. 7. Use the appropriate safety equipment.

  6. Wear: Goggles/safety glasses Closed-toed shoes Tie back long hair Do NOT Wear: Sandals Jewelry Loose or Baggy clothing Clothing

  7. Safety Shower Safety Goggles Lab Safety Equipment EyeWash

  8. Eye Protection • Safety goggles should be worn when using chemicals or when pointed objects are being used. • Safety goggles can be used by more than one person if sterilized between uses. Goggle sanitizers are used for this purpose.

  9. Using Dangerous Materials • Batteries exhibiting corrosion should be discarded. • Never taste or put anything in your mouth in the science lab. • Notify a teacher immediately in the case of a liquid spills. • Notify a teacher cracked , chipped or broken glass.

  10. Fire Extinguisher Fire Blanket More Lab Safety Equipment Fume Hood

  11. Safety With Heat Sources • Never touch a hot surface like a hot plate or boiling water in your classroom. • If something must be heated, follow instruction and use proper safety equipment, • Name some hot surfaces at your house that should be avoided.

  12. How to Use a Fire Extinguisher • Remove the pin that keeps the handle in place. • Point the nozzle at the base of the fire. • Squeeze the handle. • Move the fire extinguisher side to side as it discharges, to cover as much area as possible. • It takes only thirty seconds to discharge the fire extinguisher so make sure your aim is good. • Never use a fire extinguisher on a person!

  13. Locate the “KEY”(The round object) • Twist the key to remove the stiff nylon retaining cord. • Then pull the key out. • Unless you are very strong you can not pull the key out without twisting first.

  14. Raise nozzle in order to direct the stream of Carbon Dioxide

  15. Squeeze the handle to begin the operation.

  16. How to Use a Fire Blanket • Open the container that holds the fire blanket and remove it. • Open the blanket up and throw it over the fire. • Never wrap a person in a fire blanket who is standing upright. This will cause a chimney effect. Remember, stop, drop, roll, and cover.

  17. Fire Resistant Lab Tables

  18. Using an Eyewash Station • If anyone gets chemicals in their eyes, immediately guide them to the eye wash station. Do not wait on the teacher!! • Remove the caps covering the two water fountain devices. • Place the bridge of your nose in between the two fountains and turn the water on. This will rinse anything out of the eyes. • Keep the eyewash station bacteria free by running it for five minutes weekly.

  19. (MSDSSheet) Materials Safety Data Sheet A list provided by the supplier which the dangers of the chemicals in question.

  20. Glassware Heat Eye and Face Sharps Electrical Animal Chemical Fire Common Lab Safety Symbols

  21. Flammable Explosive Toxic/Poison Irritant Corrosive Environmental Other Chemical Hazards and Symbols

  22. Chemical Hazard Symbols and Definitions • Flammable– Any substance that will burn if exposed to an open flame. • Explosive– A substance that may explode if exposed to heat or flame.

  23. Chemical Hazard Symbols and Definitions • Toxic/Poison – A substance that canlead to death if inhaled, ingested, or absorbed by the skin. • Corrosive – A substance that can destroy or burn living tissue and can eat away at other materials.

  24. Chemical Hazard Symbols and Definitions • Irritant - A substance that causes inflammation upon contact with skin or mucous membranes. • Environmental - Substances that are harmful to the environment. They must be disposed of properly, not washed down the drain.

  25. Accidents and Injuries • Report ALL accidents and injuries to your teacher immediately!!! • Be aware of safety hazards associated with each chemical you use. • Eye accident – Wash the eye with copious amounts of water for at least 15 min. • Fire / Burns – Stop, Drop, and be covered with a fire blanket or soaked with water. Do not remove clothing stuck to victim. Get medical attention immediately.

  26. Waste Disposal • First ask your teacher where/how to dispose of waste. • Never pour anything down the drain unless you are told to do so. • A waste bottle will be supplied for asubstance that cannot go down the drain

  27. Reasons for proper waste disposal • Hazardous chemicals down the drain can lead to pollution of ground water, lakes, rivers, etc. • Plants and animals will die if they are exposed to hazardous chemical waste. • Serious health problems will become present in people if hazardous waste finds its way into drinking water.

  28. Laboratory Materials Respect lab equipment and work to keep the science lab neat and in order.