Halton District School Board

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Presentation transcript:

Halton District School Board The Rules of Lab Safety Halton District School Board

and the safety of those around you. You are responsible for your safety and the safety of those around you. Failure to act in a safe and responsible manner will result in the removal of all science lab privileges.

Horseplay will be dealt with severely! Professor Glickman, the lab practical joker, deftly places a single drop of hydrochloric acid on the back of Professor Bingham's neck. --Gary Larson, the Far Side

General Safety Precautions No student should be in the lab or prep room unsupervised. Be prepared for your lab. READ your procedure for any safety precautions. Do not eat or drink or chew gum in the lab. Your food may pick up harmful chemicals. Never taste or directly inhale chemicals. Do not smell chemicals. Use the wafting technique Do not sit on the lab benches. Students must stand while doing labs.

General Safety Precautions Keep work area tidy and free from clutter when performing experiments If designing your own experiment, you MUST first have your procedure approved by your teacher . Butane lighters, matches and other flammable materials must not be brought to class.

Safety Equipment Know the locations of all safety equipment in the lab: fire extinguishers, eye wash station, first aid box, fire blanket, fire exits. Safety goggles must be worn for all experiments. Contact lenses should not be worn, use prescription glasses with goggles. Dress appropriately during a lab activity. Long hair must be tied back, and dangling jewellery and baggy clothing must be secured. Shoes must completely cover the foot. No sandals allowed on lab days. Your teacher may require additional safety equipment, which must be worn.

Handling Chemicals All chemicals in the laboratory are to be considered dangerous. Avoid handling chemicals with fingers. Do not taste, or smell any chemicals.  Check the label on all chemical bottles twice before removing any of the contents.  Take only as much chemical as you need. . . Never return unused chemicals to their original container. No Chemicals go down the sink. Dispose of chemicals as instructed by your teacher. Never remove chemicals or other materials from the laboratory area Look for WHMIS or HHPS symbols on containers.

Hazardous Household Product Symbols CORROSIVE Eats or wears away other materials. EXPLOSIVE Explodes or gives off deadly vapours. FLAMMABLE Ignites if exposed to heat or sparks. POISONOUS May cause sickness or death if swallowed.

Workplace Hazardous Materials Information System WHMIS Workplace Hazardous Materials Information System Compressed gas Gasses under pressure May explode if heated Flammable and combustible material May ignite easily May create flammable gases Materials causing immediate and serious toxic effects Poisons Harmful if ingested or gets on body Oxidizing material Can cause other materials to burn Causes skin burns

Workplace Hazardous Materials Information System WHMIS Workplace Hazardous Materials Information System Materials causing other toxic effects Harmful effects with prolonged exposure Biohazardous infectious material May contain biological toxins Mould, viruses, bacteria, etc Corrosive material React with metals Reacts with living tissue Causes burns, blindness, lung damage Dangerously reactive material May react with water Unstable Sensitive to shock

Handling Glassware Do not use dirty or chipped glassware. Clean drips off the sides of beakers and flasks for the safety of the next student. Broken glass should be reported to the teacher who will give instructions for the safe clean up and disposal. There is a designated “Broken Glass” container. Do not tightly stopper a flask where gas is being created. It could explode. Clean and return all glassware at the end of the lab.

Heating Substances Light a bunsen burner as instructed by teacher. Never leave a heat source unattended. Hot glass does not look hot! Handle recently heated glassware with tongs. Do not immerse hot glassware in cold water.  The glassware may shatter. When heating a test tube, always point the test tube away from yourself and others. Never look into a container that is being heated.

Accidents & Injuries Respond to emergencies sensibly and immediately! Report all accidents and injuries to the teacher at once, no matter how minor. If chemicals are spilled on skin, rinse well with water for as long as directed by teacher. For chemicals splashed in eyes, rinse at eye wash station for at least 30 minutes. If you break something or spill something, please inform a teacher immediately. Do NOT handle broken glass! If a fire starts, inform a staff member immediately – If you are on fire; STOP… DROP… ROLL!!!

When the lab is done . . Dispose of chemicals and materials only as instructed by your teacher. Clean all glassware and put everything away according to instructions. Wipe the counters clean with paper towels. Sinks should be cleaned and should not contain any solid material. Clean goggles and return to designated storage. Wash your hands with soap and water.

IF YOU’RE NOT SURE ABOUT SOMETHING… Ask your TEACHER!!!!

Study the diagram below List things which are clearly a safety hazard