IOSH Controlling Risks

Question 1

What is 'elimination' in the hierarchy of control?

Accepted Answer

Completely removing the hazard from the workplace

Answer

Using personal protective equipment

Answer

Replacing a hazardous substance with a less hazardous one

Answer

Putting up warning signs

Question 2

What is 'substitution' as a control measure?

Accepted Answer

Replacing a hazardous substance, process or equipment with a less hazardous alternative

Answer

Training workers to use equipment safely

Answer

Isolating the hazard from workers using physical barriers

Answer

Providing respiratory protective equipment

Question 3

What is an 'engineering control'?

Accepted Answer

A physical control such as a guard, ventilation system, or enclosure that reduces exposure

Answer

A control measure that relies on workers following procedures

Answer

A type of personal protective equipment

Answer

A training programme for engineers

Question 4

What is an 'administrative control' measure?

Accepted Answer

A control that relies on procedures, training, signage, job rotation or scheduling

Answer

A physical barrier around a hazard

Answer

A type of PPE

Answer

Eliminating the hazard entirely

Question 5

Why is PPE considered the last resort in the hierarchy of control?

Accepted Answer

Because it only protects the individual, can fail, and depends on correct use

Answer

Because it is the most expensive option

Answer

Because workers prefer not to wear it

Answer

Because it is not required by law

Question 6

What is a 'safe system of work'?

Accepted Answer

A formal procedure based on systematic examination of work to identify hazards and define safe methods

Answer

A system where no accidents have ever occurred

Answer

A computer system for recording accidents

Answer

An insurance policy covering workplace injuries