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WHMIS and Lab Safety
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WHMIS and Lab Safety
WHMIS and Lab Safety
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1
Question
What are the two standard sets of symbols Canada uses to identify hazardous materials?
Answer
1. Consumer Product Symbols (CPS) - for common products used around the home. 2. Workplace Hazardous Materials Information System (WHMIS) - for products found in workplaces or science laboratories, including symbols, labels, and Safety Data Sheets (SDS).
2
Question
What does an octagon (stop sign) and an upside-down triangle signify in Consumer Product Symbols?
Answer
An octagon means the contents of the container are dangerous; an upside-down triangle means the container itself is dangerous.
3
Question
What are the primary purposes of WHMIS?
Answer
To give employers and workers information about the hazardous products or chemicals they may be exposed to at work, and to reduce workplace injuries and illnesses.
4
Question
What hazard does the WHMIS symbol for Compressed Gas represent, and what are key precautions?
Answer
Represents gas under pressure that may explode if heated, punctured, or dropped; sudden release of gas can burn or damage skin. Precautions include storing gas in a safe location, tying it down during transport, and handling with care.
5
Question
List examples of materials labeled with the WHMIS Compressed Gas symbol.
Answer
Propane gas tanks, spray cans, and oxygen tanks.
6
Question
What are the risks associated with Flammable Materials in WHMIS, and what precautions should be taken?
Answer
Risks include potential fire hazard; catching fire spontaneously if exposed to air, water, heat, sparks, flames, or friction. Precautions include removing open flames and spark-producing equipment, not smoking, using explosion-proof equipment, and storing in a cool room.
7
Question
Give examples of materials classified as Flammable Materials under WHMIS.
Answer
Gasoline, paint thinner, and hairspray.
8
Question
What defines Oxidizing Materials according to WHMIS, and what risks do they pose?
Answer
Oxidizing materials are chemicals that easily decompose to release oxygen, supporting fire expansion. Risks include causing fires or explosions and enhancing combustion of other materials.
9
Question
What precautions should be taken when handling Oxidizing Materials?
Answer
Store in containers that will not rust, keep away from heat, hot surfaces, and sparks, and keep valves free from oil and grease.
10
Question
Provide examples of Oxidizing Materials.
Answer
Chlorine, bleach, and peroxide.
11
Question
What risks and precautions are associated with Poisonous & Infectious Materials - Division 1?
Answer
Risks: Can cause immediate, serious, or fatal toxic effects. Precautions: Avoid breathing fumes and vapours, avoid skin contact, wear appropriate protective equipment, work in well-ventilated areas, and follow proper use, handling, storage, and disposal procedures.
12
Question
Give examples of Poisonous & Infectious Materials - Division 1.
Answer
Carbon monoxide and hydrogen cyanide.
13
Question
What distinguishes Poisonous & Infectious Materials - Division 2, and what precautions are recommended?
Answer
They may cause immediate and severe harm and often act as skin and/or eye irritants. Precautions include avoiding breathing dust or vapours, avoiding skin or eye contact, wearing personal protective equipment, working in well-ventilated areas, and washing exposed body parts thoroughly after handling.
14
Question
List examples of Poisonous & Infectious Materials - Division 2 substances.
Answer
Asbestos, mercury, lead, benzene, and acetone.
15
Question
What are some health risks associated with Poisonous & Infectious Materials (Division 3)?
Answer
They can cause serious long-term health effects such as carcinogenicity, reproductive toxicity, aspiration hazard, respiratory sensitization, and specific target organ toxicity.
16
Question
What precautions should be taken when handling Poisonous & Infectious Materials?
Answer
Work in a well-ventilated area, store in designated areas, avoid direct contact, use personal protective equipment, and avoid repeated or prolonged exposure.
17
Question
What are the main risks of Corrosive Materials?
Answer
They are corrosive to metals, can cause serious eye damage, and severe skin burns.
18
Question
What precautions are recommended when handling Corrosive Materials?
Answer
Use appropriate storage containers with proper non-venting closures and wear appropriate protective equipment including respiratory protection.
19
Question
Give examples of common Corrosive Materials.
Answer
Examples include sulfuric acid, chlorine gas, and ammonia.
20
Question
What risks are associated with Self-Reactive Materials?
Answer
They may explode due to reaction to fire, shock, friction, heat, puncture, or contact with incompatible materials.
21
Question
What precautions should be taken when handling Self-Reactive Materials?
Answer
Handle with care, avoid vibration, shocks, sudden temperature changes, ensure storage containers are sealed, and store/work in designated areas.
22
Question
List some examples of Self-Reactive Materials.
Answer
Organic peroxides, nitroglycerine, TNT, gunpowder, and pyrotechnic mixtures like fireworks.
23
Question
What risks are posed by Biohazardous Infectious Materials?
Answer
They may cause anaphylactic shock and involve exposure to viruses, yeasts, molds, bacteria, and parasites that can cause diseases in animals or humans.
24
Question
How should Biohazardous Infectious Materials be handled?
Answer
Store only in special designated areas with limited access and appropriate protocols, practice hand hygiene, and use gloves.
25
Question
Provide examples of Biohazardous Infectious Materials.
Answer
Examples include AIDS, parasites, human blood/tissue, E.coli, and salmonella.
26
Question
What key information is included on WHMIS 2015 labels?
Answer
Labels include the product identifier, pictograms, signal word(s), hazard statement, precautionary bilingual statement, supplementary information, and initial supplier identification.
27
Question
What are the four main purposes of a WHMIS 2015 Safety Data Sheet (SDS)?
Answer
1. Identification of the product and supplier; 2. Hazards including physical and health; 3. Prevention steps to work safely and reduce exposure; 4. Response actions for situations like first aid, fire, or accidental release.
28
Question
What hazard classes are shown in the text involving compressed gas and infectious materials?
Answer
Compressed gas, biohazardous infectious materials Division 1, poisonous and explosive, infectious Division 2, corrosive.
29
Question
What hazards are associated with Acetone according to WHMIS 2015?
Answer
Acetone is flammable (potential fire hazard, catches fire spontaneously or easily), is a Poisonous and Infectious material Division 2 causing immediate and severe harm, and is a skin and/or eye irritant.
30
Question
What safety warnings and precautions are specified for Acetone?
Answer
Keep away from heat and fire, keep the container tightly closed, use outside or in a well-ventilated area, and wear eye, face, and clothing protection.