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What are the types of hazards?

Author

James Craig

Published Jan 07, 2026

The six main categories of hazards are:

  • Biological. Biological hazards include viruses, bacteria, insects, animals, etc., that can cause adverse health impacts. ...
  • Chemical. Chemical hazards are hazardous substances that can cause harm. ...
  • Physical. ...
  • Safety. ...
  • Ergonomic. ...
  • Psychosocial.

What are the 5 categories of hazards?

Understand and know the Occupational Safety and Health Administration's (OSHA) five types of workplace hazards and take steps to mitigate employee risk.

  • Safety. Safety hazards encompass any type of substance, condition or object that can injure workers. ...
  • Chemical. ...
  • Biological. ...
  • Physical. ...
  • Ergonomic.

What is a hazard and its types?

A hazard is any source of potential damage, harm or adverse health effects on something or someone. Basically, a hazard is the potential for harm or an adverse effect (for example, to people as health effects, to organizations as property or equipment losses, or to the environment).

What are the 3 types hazards?

All hazards are assessed and categorized into three groups: biological, chemical and physical hazards.

What are 4 types of hazards?

There are four types of hazards that you need to consider:

  • Microbiological hazards. Microbiological hazards include bacteria, yeasts, moulds and viruses.
  • Chemical hazards. ...
  • Physical hazards. ...
  • Allergens.
24 related questions found

What are the 6 types of hazards?

The six main categories of hazards are:

  • Biological. Biological hazards include viruses, bacteria, insects, animals, etc., that can cause adverse health impacts. ...
  • Chemical. Chemical hazards are hazardous substances that can cause harm. ...
  • Physical. ...
  • Safety. ...
  • Ergonomic. ...
  • Psychosocial.

What are the two types of hazards?

Hazardous products are divided into two hazard groups: physical hazards and health hazards. The two hazard groups are further divided into hazard classes. Each hazard class contains at least one category.

What are the types of hazard in the workplace?

What Are The 6 Types Of Hazards In The Workplace?

  1. Safety Hazards. Safety hazards can affect any worker, but these are more likely to affect those who work with heavy machinery or on a construction site. ...
  2. Biological Hazards. ...
  3. Physical Hazards. ...
  4. Ergonomic Hazards. ...
  5. Chemical Hazards. ...
  6. Workload Hazards.

How many hazard classes are there?

The DOT separates hazardous materials into nine different categories or “hazard classes.” They are defined by specific hazardous properties and have distinct regulatory requirements for packaging, markings, and labels.

What are the 7 categories of hazardous waste?

These properties generate materials that are either toxic, reactive, ignitable, corrosive, infectious, or radioactive.

What are the 7 hazardous substances?

There are 9 hazardous substances symbols you need to know: flammable, oxidising, explosives, gas under pressure, toxic, serious health hazard, health hazard, corrosive and environmental hazard.

What is a Class 4 hazardous material?

Class 4 dangerous goods include flammable solids, substances liable to spontaneous combustion and substances which, in contact with water, emit flammable gases.

What are 4 common workplace hazards?

4 Types of Workplace Hazards

  • Physical Hazards. Physical hazards are the most common type of workplace hazards. ...
  • Biological Hazards. ...
  • Ergonomic Hazards. ...
  • Chemical Hazards.

What is a Class 5 hazardous material?

Hazard Class 5 consists of two divisions: Division 5.1, Oxidizing Substances. A material that may, generally by yielding oxygen, cause or enhance the combustion of other materials. Division 5.2, Organic Peroxides.

What are the 4 flammable hazard classes?

The physical hazard classes are described briefly below. Flammable gases Flammable aerosols Flammable liquids Flammable solids These four classes cover products that have the ability to ignite (catch fire) easily.

What is a Class 5 Oxidizer?

Subsets of class 5 are:

5.1 Oxidizers means a material that may, generally by yielding oxygen, cause or enhance the combustion of other materials.

What are the 10 hazard symbols?

Hazard pictograms (symbols)

  • Explosive (Symbol: exploding bomb)
  • Flammable (Symbol: flame)
  • Oxidising (Symbol: flame over circle)
  • Corrosive (Symbol: corrosion)
  • Acute toxicity (Symbol: skull and crossbones)
  • Hazardous to the environment (Symbol: environment)

What are 3 types of hazardous classifications used on chemicals?

They are used to describe 3 main types of chemical hazards: physical hazards, health hazards and environmental hazards.

What are the 9 COSHH symbols?

The nine hazard symbols used to identify the kind of substances that COSHH deals with are explosive, flammable, oxidising, corrosive, acute toxicity, hazardous to the environment, health hazard, serious health hazard and gas under pressure.

What are the 4 types of waste?

For the purposes of this review these sources are defined as giving rise to four major categories of waste: municipal solid waste, industrial waste, agricultural waste and hazardous waste.

What are the 3 types of waste?

Classifying Different Types of Waste

  • Liquid waste. Liquid waste is frequently found both in households as well as in industries. ...
  • Organic Waste. Organic waste is a common household waste. ...
  • Recyclable Rubbish. ...
  • Hazardous Waste.

What are the 4 characteristics of hazardous waste?

EPA's regulations in the Code of Federal Regulations (40 CFR) define four hazardous waste characteristic properties: ignitability, corrosivity, reactivity, or toxicity (see 40 CFR 261.21- 261.24).

What pH level is considered hazardous?

When the pH levels reach or exceed 12.5 pH, it then becomes hazardous. As with all hazardous wastes, when in contact with human or environmental health, it can be very dangerous.

What are the types of waste?

5 Types of Waste; Do You Know Them?

  • Liquid waste. Liquid waste refers to all grease, oil, sludges, wash water, waste detergents and dirty water that have been thrown away. ...
  • Solid Waste. ...
  • Organic Waste. ...
  • Recyclable Waste. ...
  • Hazardous Waste.

What are hazardous waste examples?

Household hazardous waste is the discarded, unused, or leftover portion of household products containing toxic chemicals.
...
Some examples of hazardous wastes you may find around your house include(1):

  • antifreeze.
  • batteries.
  • brake fluid.
  • chemical strippers.
  • chlorine bleach.
  • contact cement.
  • drain cleaners.
  • fire extinguishers.