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BEST - WHMIS Unit 2 - Classification

This unit will help you in understanding the classification of controlled products in the workplace and the roles of Suppliers, Employers and Workers.
by

John Vanderwyst

on 16 June 2010

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Transcript of BEST - WHMIS Unit 2 - Classification

Unit 2 - Classification Classification Legislation Hazardous Products Act Restricted Products Controlled Products Classification Federal act governing hazardous products.
Hazardous products include prohibited, restricted and controlled products. Conform to consumer labelling legislation
Examples: bleaches, cleansers and adhesives sold to the public. Products, materials or substances that fall into any of six WHMIS hazard classes.
WHMIS applies to controlled products for use in the workplace. Represents the foundation of WHMIS.
Helps determine label and MSDS content.
Determines the instruction employers must provide in worker education and training. WHMIS Classes Class A: Class B: Class C: Class D: Class E: Class F: There are six classes of hazardous materials. Class D, Poisonous and Infectious Material, has three divisions. Each of these classes and divisions has a distinctive hazard symbol. Compressed Gas Flammable and Combustible Material Oxidizing Material Poisonous and Infectious Material Corrosive Material Dangerously Reactive Material Division 1 – Materials causing immediate and serious effect Division 2 – Material causing other toxic effects Division 3 – Biohazardous infectious materials Class A – Compressed Gases Products under pressure e.g. Butane, propane, acetylene and fire extinguishers. If a pressurized container is punctured because it is dropped or exposed to excessive heat, the exploding fragments or rocket-like projectile present a serious physical hazard.

Examples include chlorine contained in a pressurized cylinder and used as a disinfectant at swimming pools, and oxygen used in oxyacetylene welding. Hazards Associated with Compressed Gases Class B, Flammable and combustible material Division 1 – Flammable gas
Division 2 – Flammable liquid
Division 3 – Combustible liquid
Division 4 – Flammable solid
Division 5 – Flammable aerosol
Division 6 – Reactive flammable material Flammable or Combustible Materials Substances capable of catching fire or exploding

e.g. Acetone, isopropyl alcohol, stoddart solvent. Products causing / contributing to the combustion of other materials.

e.g. Hydrogen peroxide, potassium nitrate, sodium chlorate Class C – Oxidizers Class D - Poisonous and Infectious Materials Division 1 Materials causing immediate and serious toxic effect.

Examples include: Class D – Poisonous and Infections Materials Materials causing other toxic effects
Immediate skin or eye irritation
Chronic health effects on body organs, cardiovascular or nervous system

e.g. Carcinogens (crystalline silica), sensitizers (methyl methacrylate), embryotoxin (xylene). Class D – Poisonous and Infectious Materials Biohazardous infectious materials - Harmful microorganisms

Classified as Risk Groups 2, 3 or 4 as defined by the Medical Research Council of Canada.
Includes commercial cultures containing infectious organisms such as HIV, Ebola and Hepatitis B Class E – Corrosive Materials Materials such as caustics or acids causing burns to skin or eyes.

e.g. Sodium hydroxide, hydrochloric acid and hydrofluoric acid. Class F – Dangerously Reactive Materials Products which can undergo dangerous reaction if subject to heat, light, pressure, shock, water or air.

e.g. Hydrogen cyanide, benzoyl peroxide, chlorine dioxide. Prohibited Products Cannot be imported, advertised or sold in Canada.
Examples: Certain hazardous toys, spackling compounds, highly flammable paint removers Employers Classify controlled products

Determine if product meets Controlled Product Regulations

Provide labels and MSDS Must classify any controlled products in their workplace

Ensure that labels and MSDS are provided Must understand product hazards

Inform employers of improperly classified products

Be aware of product hazards and work safely with them Workers Classification Responsibilities Suppliers There are six divisions that are covered by the same hazard symbol: Sodium Cyanide, Arsenic, Methylene,
Chloride & Formaldehyde Division 3 Division 2
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