Embedded Files
Learning Intentions
Learning Intentions
We are learning to:
- Inform students of what their study of safety and equipment entails
- Identify and discuss the international hazard warning signs/icons
- Understand the meaning of each hazard warning sign
- Develop an understanding as to why these signs are used.
- Develop an understanding about safety in the laboratory.
- Know, understand and apply the rules of the laboratory in a responsible manner
- Practise safe laboratory techniques
Success Criteria
Success Criteria
WE KNOW WE ARE SUCCESSFUL WHEN WE CAN:
- Identify, discuss and explain each International Hazard Warning Sign
- Discuss and explain how, why and where the IHWS are used
- Demonstrate our understanding of the importance and need for safety in the laboratory.
- Explain and demonstrate the rules of the laboratory
Session 1 – Laboratory Rules
Session 1 – Laboratory Rules
Every student has a responsibility to understand and obey all of the safety rules in order to avoid making mistakes that could cause harm to anyone around them. No one will be allowed to perform any of the laboratory activities until they understand the basic rules of our laboratory.
Our lab rules are:
v DO NOT TOUCH,TASTE PLAY WITH OR SMELL ANYTHING UNLESS TOLD
v ALWAYS OBEY INSTRUCTIONS
v IF YOU DO NOT UNDERSTAND, ALWAYS ASK
v ALWAYS KEEP YOUR DESK, BASIN, LABORATORY CLEAN AND NEAT
v ALWAYS PACK AWAY EQUIPMENT, NOTES, ETC
v DO NOT RUN AROUND OR FOOL AROUND IN THE LABORATORY
v ALWAYS WASH YOUR HANDS AFTER EXPERIMENTATION OR ACTIVITY
v ALWAYS READ, THINK, UNDERSTAND AND THEN DO
v PUPILS WITH LONG HAIR NEED TO HAVE IT TIED BACK
v SHOES MUST BE WORN AT ALL TIMES
v TAKE CARE OF YOUR EYES – Goggles worn when experimenting
Session 2 – International Hazard Warning Signs/Symbols
Session 2 – International Hazard Warning Signs/Symbols
These signs are internationally recognised and agreed to.
The signs/symbols are designated to chemicals, appliances or equipment that warn one of potential dangers.
Hazard signs/symbols and their use is often regulated by law.
The signs/symbols often appear with different colors, backgrounds, borders but their message is universal.
EXPLOSIVE
Any manufactured chemical that presents a hazardous or explosive nature
TOXIC
Small amounts enter the body can cause death or serious illness.
Can be liquid, solid or gas.
RADIOACTIVE
Any material that produces harmful radiation waves.
The intensity of the waves can cause death or serious illness.
FLAMMABLE
Any liquids, solids and gases that have a low flash point. They can easily ignite when the temperature rises.
(The flashpoint of a liquid is the lowest temperature at which the liquid gives off enough vapour to be ignited)
CORROSIVE
Any chemical that will destroy or damage a surface or organism.
Corrosive substances will burn or skin, eyes, lungs, etc.
IRRITANT
Any solid, liquid or gas that causes irritation to skin, eyes, nose or linings of the mouth and throat.
OXIDISING AGENT
An oxidising agent is a substance that reacts with certain other substance to produce heat – a dangerous situation.
Session 3 – Safety in the laboratory
Session 3 – Safety in the laboratory
Learning Intentions
Learning Intentions
We are learning to:
- Develop an understanding about safety measures in the laboratory.
- Identify and describe the steps taken at the time of an accident.
- Know how to deal with a particular injury
Success Criteria
Success Criteria
WE KNOW WE ARE SUCCESSFUL WHEN WE CAN:
- Explain safety measures in the laboratory.
- Identify and describe the steps taken at the time of an accident.
- Explain and demonstrate how to deal with a particular injury.
This section will give basic first aid tips.
• What are some possible accidents?
• What is/are the aim/s of basic first aid?
Aims of First Aid
• Preserve loss of life
• Prevent further injury
• Promote recovery
Burns
Burns
What is a burn?
An injury to the skin and other tissue caused
by heat, extreme cold, electrical shock or chemicals.
Treatment
1. Place burn area immediately under cool water – relieves pain, reduces swelling and prevents further skin damage
2. Inform teacher
3. Cover the wound
4. DO NOT APPLY creams, ointments, butter, etc – this only seals heat in
Eye Injury
Eye Injury
Most eye injuries can be avoided by wearing the protective goggles/glasses. Most common eye injuries are chemical splash into the eye, dust or other particles entering the eye.
Treatment
1. Warn person not to rub eye
2. Wash hands before attempting to treat.
3. Incline the head towards the light and look into the eye – if object not seen, cover the eye with an eye pad and seek medical attention.
4. If it is chemical burn, hold person’s eye under gently running water – incline head so chemical does not enter the undamaged eye – seek urgent medical attention
Fire
Should any accident result in something being set alight, call the teacher immediately. If water is readily available and it is NOT an electrical fire, douse the flames.
If the fire is the result of a leaking/use of a Bunsen burner inform teacher immediately and push the RED cut off switch at the front of the laboratory. This will cut the cut supply immediately.
Chemical on yourself or your uniform
A corrosive chemical will continue to burn as long as it is in contact with the skin.
For a corrosive liquid chemical:
• Flood the area with water as clothing is removed
• Flood for 10 – 15 minutes
• Cover with a clean dressing
• Get medical assistance
If the spilled corrosive chemical is a dry powder:
• Carefully remove the contaminated clothing, making sure not to touch the unaffected skin with the contaminated clothing. Cut clothing away, if necessary brush off any powder from the skin – do NOT use bare hands
• Flood the affected area with water – 10-15 minutes
• Apply a clean dressing
• Seek medical assistance
• Contaminated clothing must be placed in a secure bag
Electrical Shock
Electric shock occurs when a person accidentally comes into contact with an electrical energy source. The electrical current flows through the body causing a shock. Such contact can lead to varying degrees of injury – a slight burn and damage to the skin or death.Most important facts:
• Do NOT touch the person
• Turn the electricity off immediately
The person will more than likely have 2 injury sites – place of contact or entry and an exit wound depending on the current strength.
Electrical shock can result in heart failure – this must NOT be overlooked
Treatment
• Turn current off
• Get person away from point of contact
• Treat possible heart failure
• Treat wounds
• Treat for shock (keep calm, reassure, loosen tight restrictive clothing. Give NOTHING by way of mouth – only moisten lips, keep warm but do not overheat, get medical attention)
Activities
Activities
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