HEALTH AND SAFETY WEEK
Or, how not to get hurt, sick or die because of a dumb mistake
Days 1 and 2 - Hopefully go through everything up to rules
Day 3 - Case Studies
Day 4 - Lab
Day 5 - Food Safety
Day 3 - Case Studies
Day 4 - Lab
Day 5 - Food Safety
Please become familiar with the following safety rules and procedures. Following them and all instructions will make performing the activities and investigations safe and enjoyable for everyone (including Mrs. J ).
I will also give you specific information about any other special safety rules that need to be followed at NWSS (like no parkour on desks).
I will also give you specific information about any other special safety rules that need to be followed at NWSS (like no parkour on desks).
But first, some general lab safety!
Safety Symbols
The following safety symbols are designed to alert you of possible dangers. Be sure that you understand each symbol used in an activity or investigation before you begin.
WHMIS 2015 Symbols
WHMIS stands for Worksafe Hazardous Materials Information System. Let's take a look at the safety symbols shown here. These symbols are used in a ton of different professional and educational settings to identify harmful materials. When you see these symbols on containers, use proper precautions!
The Big Deal - Movie Time!
What's the big deal? |
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• The material is a fire or explosion risk near flammable or combustible material. It may burn skin or eyes on contact.
• An oxidizing material may or may not burn itself, but will release oxygen or another oxidizing substance, and thereby causes or helps a flammable or combustible material to burn. E.g. sulfuric acid, perchloric acid, hydrogen peroxide, sodium peroxide, benzyl peroxide, permanganates, dichromates, perchlorates, chlorine and bleach.
• Keep the material away from combustible materials and store in designated areas. Keep the material away from sources of ignition. Never smoke when working near the material.
• Wear proper protective equipment, including eye, face and hand protection and protective clothing.
• An oxidizing material may or may not burn itself, but will release oxygen or another oxidizing substance, and thereby causes or helps a flammable or combustible material to burn. E.g. sulfuric acid, perchloric acid, hydrogen peroxide, sodium peroxide, benzyl peroxide, permanganates, dichromates, perchlorates, chlorine and bleach.
• Keep the material away from combustible materials and store in designated areas. Keep the material away from sources of ignition. Never smoke when working near the material.
• Wear proper protective equipment, including eye, face and hand protection and protective clothing.
What's the big deal? |
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• The material is a potential fire hazard. It may burn at relatively low temperature. Sparks, flame or friction could ignite it.
• May burst into flame spontaneously in air or release a flammable gas on contact with water.
• Keep any of these materials away from heat sources and other combustible materials. Never smoke when working with or near the materials. Store in a cool, fire-proof area.
• May burst into flame spontaneously in air or release a flammable gas on contact with water.
• Keep any of these materials away from heat sources and other combustible materials. Never smoke when working with or near the materials. Store in a cool, fire-proof area.
- Flammable Gases: E.g. hydrogen, methane, propane.
- Flammable Liquids: Flashpoint less than 37ºC. These liquids catch on fire easily and have highly flammable fumes. E.g. gasoline, ethanol, methanol, diethyl ether.
- Combustible Liquids: Flashpoint > 37ºC E.g. diesel fuel, kerosene. These are less easily ignited than flammable liquids.
- Flammable Solids: E.g. magnesium, sodium, beryllium.
- Flammable Aerosols: E.g. most aerosol cans contain flammable propellants, also butane, propane in aerosol containers.
- Flammable Reactive Materials: Materials that could spontaneously ignite in air (celluloid, lithium aluminum hydride) or in water (sodium).
What's the big deal? |
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• When a gas is kept under pressure, it is fragile.
• Heat may cause the container to explode.
• A drop or impact may cause the container to explode. E.g. steel cylinders of acetylene, oxygen, hydrogen, helium, chlorine, nitrogen, neon, argon etc. and fire extinguishers.
• Compressed gases can be hazardous simply because they are under high pressure, and the gas itself can also be hazardous (like chlorine gas). If the gas itself is hazardous, it will have other appropriate hazard symbols along with the compressed gas symbol.
• Handle with care, do not drop.
• Keep away from heat or potential sources of ignition. Store in a designated area. Large cylinders must be properly secured with a chain.
• Heat may cause the container to explode.
• A drop or impact may cause the container to explode. E.g. steel cylinders of acetylene, oxygen, hydrogen, helium, chlorine, nitrogen, neon, argon etc. and fire extinguishers.
• Compressed gases can be hazardous simply because they are under high pressure, and the gas itself can also be hazardous (like chlorine gas). If the gas itself is hazardous, it will have other appropriate hazard symbols along with the compressed gas symbol.
• Handle with care, do not drop.
• Keep away from heat or potential sources of ignition. Store in a designated area. Large cylinders must be properly secured with a chain.
What's the big deal? |
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• Products with this pictogram present severe fire and explosion hazards.
• Significant injury and property damage could result from incidents involving these products.
• Products with this pictogram are not commonly used because of their severe hazards.
• When used, they must be handled and stored in stringently controlled conditions, and specialized training and supervision are required.
NOTE: In Canada, explosives are regulated under the Explosives Act. Providing detailed information about the hazards, safe handling and storage, and emergency procedures for explosives is beyond the scope of the WHMIS.
• Significant injury and property damage could result from incidents involving these products.
• Products with this pictogram are not commonly used because of their severe hazards.
• When used, they must be handled and stored in stringently controlled conditions, and specialized training and supervision are required.
NOTE: In Canada, explosives are regulated under the Explosives Act. Providing detailed information about the hazards, safe handling and storage, and emergency procedures for explosives is beyond the scope of the WHMIS.
What's the big deal? |
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• These materials are immediately dangerous to life and health. They can kill you fast!
• Handle the material with extreme caution. Avoid contact with the skin or eyes, use proper protective clothing.
• Avoid inhaling by working in well-ventilated areas. Wear respiratory equipment.
• Wash and shower thoroughly after using.
• Store in designated areas only
• Handle the material with extreme caution. Avoid contact with the skin or eyes, use proper protective clothing.
• Avoid inhaling by working in well-ventilated areas. Wear respiratory equipment.
• Wash and shower thoroughly after using.
• Store in designated areas only
What's the big deal? |
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• Caustic or acid materials that can eat through the skin or corrode metals like aluminum or steel. E.g. chromic acid, sulfuric acid, nitric acid, sodium hydroxide, hydrofluoric acid, some household cleaners, water treatment chemicals, photographic chemicals, lye.
• This class also includes corrosive gases such as ammonia and the acids hydrogen fluoride, hydrogen chloride, hydrogen iodide and hydrogen bromide.
• This class also includes corrosive gases such as ammonia and the acids hydrogen fluoride, hydrogen chloride, hydrogen iodide and hydrogen bromide.
Biohazardous
Infectious Materials What's the big deal? |
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• This includes organisms (like bacteria and viruses) and the toxins they may produce that are believed to cause disease. E.g. anthrax (in meat handling), salmonella, hepatitis B virus, AIDS virus, certain fungi and moulds, contaminated blood and pathogenic bacteria cultures, etc.
• Because we don't know what is a biohazard and what is not, when it comes to needles, blood samples, body remnants (such as excrement, organs, fats, skin, etc.) or anything biological, these should always be considered as being contaminated, and disposed of properly. Including sewage spillage!
• Biohazards are not just human-related, but also animal carcasses, animal blood, and anything that may possibly contain organisms that could be harmful.
• Because we don't know what is a biohazard and what is not, when it comes to needles, blood samples, body remnants (such as excrement, organs, fats, skin, etc.) or anything biological, these should always be considered as being contaminated, and disposed of properly. Including sewage spillage!
• Biohazards are not just human-related, but also animal carcasses, animal blood, and anything that may possibly contain organisms that could be harmful.
What's the big deal? |
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• The material is not immediately harmful, but it is known to cause death or permanent damage as a result of repeated exposure over time. Usually the effects result from repeated exposure to the substance over a long period of time. E.g. repeated exposure to benzene, asbestos.
• It can cause mutations and genetic effects on offspring of parents who were exposed.
• Includes materials that can cause ill health effects that are not immediate; such as asthma, cancer, organ damage, birth defects, sterility, or other serious illness or disease.
• It can cause mutations and genetic effects on offspring of parents who were exposed.
• Includes materials that can cause ill health effects that are not immediate; such as asthma, cancer, organ damage, birth defects, sterility, or other serious illness or disease.
What's the big deal? |
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• Includes materials that can cause immediate irritation (to the eyes, skin, or lungs) or allergies.
• Avoid skin and eye contact by wearing all protective equipment necessary including eye, face and hand protection and protective clothing.
• Avoid inhaling by working in well-ventilated areas. Use respiratory equipment.
• Store in designated areas.
• Avoid skin and eye contact by wearing all protective equipment necessary including eye, face and hand protection and protective clothing.
• Avoid inhaling by working in well-ventilated areas. Use respiratory equipment.
• Store in designated areas.
What's the big deal? |
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• This symbol means a substance is toxic to aquatic and terrestrial environments, potentially causing long-term damage.
• It alerts users to the need for responsible disposal to protect ecosystems.
• It is very important not to dispose of such chemicals on the sink.
• It alerts users to the need for responsible disposal to protect ecosystems.
• It is very important not to dispose of such chemicals on the sink.
General Rules
- Listen carefully to your teacher’s instructions.
- Inform your teacher if you have allergies, medical conditions, or physical problems that could affect your work in the science classroom.
- Tell your teacher if you wear contact lenses or a hearing aid.
- Obtain your teacher’s approval before beginning any activity you have designed.
- Know the location and proper use of the nearest eyewash station, deluge shower, fire extinguisher, fire blanket, first-aid kit, and fire alarm.
- Before starting an activity, read all of it. If you do not understand how to do a step, ask your teacher for help.
- Be sure you have checked the safety symbols and have read and understood the safety protocols.
- Begin your activity or investigation only after your teacher tells you to start.
Acting Responsibly
- When you are told to do so, wear protective clothing, such as a lab apron and safety goggles. Always wear protective clothing when you are using materials or equipment that may be a safety problem.
- Tie back long hair, and avoid wearing scarves, ties, or long necklaces.
- Never chew gum, eat, or drink in your science classroom. Do not taste any substance.
- Handle equipment and materials carefully. Carry only one object or container at a time.
- Inform your teacher of any spills so they can be cleaned up properly.
- Wash your hands thoroughly after doing any activity or investigation.
- Dispose of materials as directed by your teacher.
- If other students are doing something that you consider dangerous, report it to your teacher.
Working with Sharp Objects
- Always cut away from yourself and others when using a knife or scissors.
- Always keep the pointed end of scissors or any pointed object facing away from yourself and others if you have to walk with such objects.
- When handing someone a pointed object, always pass it to the person with the handle pointing towards the person you are giving it to.
- If you notice sharp or jagged edges on any equipment, take special care with it and report it to your teacher.
- Dispose of broken glass according to your teacher’s instructions.
Working with Electrical Equipment
- Make sure your hands are dry when touching electrical cords, plugs, or sockets.
- Pull the plug, not the cord, when unplugging electrical equipment.
- Report damaged equipment, broken ground pins, or frayed cords to your teacher.
- Place electrical cords where people will not trip over them.
Working with Chemicals
- If any part of your body comes in contact with a substance, wash the area immediately and thoroughly with water. Inform your teacher.
- If you get anything in your eyes, do not touch them. Wash them immediately in the nearest eyewash station for 15 minutes, and continuously rinse while informing your teacher.
- If you are asked to smell a substance, never smell it directly. Hold the container about 4 inches from your nose (or the distance of four fingers together), and use the wafting technique to bring the fumes toward your nose.
Designing and Building
- Use tools safely to cut, join, and shape objects.
- Handle modelling clay correctly.
- Wash your hands after using modelling clay.
- Follow proper procedures when observing and working with objects in motion.
CASE STUDIES
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Not all Colour is Created Equal
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Science Also Changes
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WASH YOUR NEW CLOTHES
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When Fireballs are Bad
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When Fireballs are Good
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Flammable goes Fast
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Manicures of Death
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Chubby Emu - The G.O.A.T.
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My Family's Anthem
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Project!!! :DThings go wrong often when you are not being aware of your environment - and sometimes, danger is hiding in unexpected places!!! After watching the videos above for inspiration, get ready to create your own Case Study!
In a group of 1-4, please create a video of an imaginary or real case study. |
You can have different roles, such a scientist, reporter, victim, dragon...? Use the safety facts in this page, or research online for more info. Be creative!!!
You will need:
- A hazardous situation that happened for real, or a fictitious one
- The WHMIS symbol(s) involved
- What went wrong?
- How the situation should have been handled safely
- Make it look like a news report!
Make it interesting. Fake the data! Graphs are super cool!!! Pictures are super cool!
Hopefully you know how to edit videos! <3
Hopefully you know how to edit videos! <3
Length of video -- minimum 3 minutes!
Presentation - February 20th!!!
Snacks will be provided! POPCORNNNNNN
Bring your worst!!!
Presentation - February 20th!!!
Snacks will be provided! POPCORNNNNNN
Bring your worst!!!
RUBRIC --> |
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SHEET for Marks
(but not necessarily homework):
Complete the sheet below and hand it in to Mrs. Jurgensen next class.
| lab_safety_rules.pdf |
EXTRA MARKS!!!
Worth 10 points towards your quiz
Dig through your pantry and under the sinks! Complete the attached document and bring it on test day -- February 15th.
It can be by hand!
It can be by hand!
| chemicals_in_my_home.docx |
LAB SCAVENGER DAY
It's the lab scavenger day! Today you will be doing a few things. First, we will go over some lab basics that will help you complete the tasks of the day. Then, you will explore a few centres as well as locate where all the safety equipment is in this lab.
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**Mrs J prints: |
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FOOD SAFETY
There is a topic that is super interesting and something that affects us every day. It manages to incorporate our knowledge of biohazards, chemicals, heat, pressure and all safety practices, and yet, most of us don’t think twice about it. Every single one of us depends on it multiple times a day, and mistakes in this area can have serious consequences for health, safety, and even entire communities. This topic is food safety — the science and practices that keep what we eat safe from hazards we can’t always see.
Here are five everyday situations. Without overthinking, in your table groups, reorder the number from most risky to least risky in terms of food safety. Be ready to explain why! :D
- Dropping a slice of pizza on the floor and eating it after 5 seconds 🍕
- Eating fruit without washing it first 🍎
- Drinking milk one day past its expiration date 🥛
- Eating cookie dough with raw eggs 🍪
- Leaving a chicken sandwich in your backpack all day and eat it
What did you get?
Here are the answers to the question:
1. Eating cookie dough with raw eggs 🍪 → Highest Risk
2. Leaving a chicken sandwich in your backpack all day 🥪 → Very High Risk
3. Dropping a slice of pizza on the floor and eating it after 5 seconds 🍕 → Medium Risk
4. Drinking milk one day past its expiration date 🥛 → Low–Medium Risk
5. Eating fruit without washing it first 🍎 → Lowest Risk (but still not safe!)
1. Eating cookie dough with raw eggs 🍪 → Highest Risk
2. Leaving a chicken sandwich in your backpack all day 🥪 → Very High Risk
3. Dropping a slice of pizza on the floor and eating it after 5 seconds 🍕 → Medium Risk
4. Drinking milk one day past its expiration date 🥛 → Low–Medium Risk
5. Eating fruit without washing it first 🍎 → Lowest Risk (but still not safe!)
Let's take a look at the slideshow below and see if we can figure out what is the issue!
Food becomes dangerous because, depending on the conditions, it becomes the perfect breeding ground for bacteria and viruses.
The microorganisms that can cause illness in food can be serious, and in many cases quite deadly. In fact, ever one of the diseases below have a worst case scenario that involves death, or in rare cases, a syndrome that causes the body to attack its own nervous system.
Foodborne Criminals
Who committed what crime?
Who is innocent this time?
Who is innocent this time?
Now, let's play a game of detective! Take some time with the information sheet of the most popular foodborne illnesses, then examine each of the four case files and evidence. Can you figure out the culprit in each of these cases?
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| food_criminals_info_sheet.pdf |
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SO YOU LOVE YOUR FAVOURITE RESTAURANT...
Before you make your next BIG birthday bash in there, how about checking into the food safety reports for your favourite place? This way you can see how things are going behind the scenes, and maybe decide to cook at home instead, YIKES!!
