IOSH Controlling Risks 3

Question 1

What is a 'lock out/tag out' (LOTO) procedure?

Accepted Answer

A safety procedure to ensure machines are properly shut down, isolated and prevented from restarting during maintenance

Answer

Lock out/tag out (LOTO) is a safety procedure to ensure that machines and equipment are properly shut down, de-energised, and isolated from all energy sources before maintenance or repair work begins. Tags warn others not to restart the equipment.

Question 2

What is the purpose of safety signage in the workplace?

Accepted Answer

To warn of hazards, indicate mandatory actions, show emergency routes, and prohibit dangerous behaviours

Answer

Safety signs provide important visual information about hazards, mandatory requirements, prohibitions, and emergency arrangements. They supplement other controls but should never be the sole control measure. The Health and Safety (Safety Signs and Signals) Regulations 1996 sets out requirements.

Question 3

What are the four types of safety sign and their colours?

Accepted Answer

Red (prohibition/fire), yellow (warning), blue (mandatory), green (safe condition/first aid)

Answer

Safety signs follow an international colour-coding system: Red = prohibition and fire equipment; Yellow/amber = warning of hazards; Blue = mandatory actions; Green = safe conditions, escape routes and first aid. Shape also varies: circle, triangle, circle, rectangle respectively.

Question 4

What should be considered when selecting PPE for a task?

Accepted Answer

The nature of the hazard, fit, comfort, compatibility with other PPE, and the work environment

Answer

When selecting PPE, consider: the nature and severity of the hazard, the fit (including individual sizing), comfort (so it will be worn), compatibility with other PPE being worn simultaneously, the work environment, and any health conditions of the wearer.

Question 5

What is 'maintenance' of control measures and why is it important?

Accepted Answer

Regular checking, servicing and repair of controls to ensure they continue to work effectively

Answer

Maintenance of control measures — including guards, ventilation systems, PPE, alarms and safety devices — is essential to ensure they continue to function as intended. Without maintenance, controls can degrade and fail, leaving workers unprotected.

IOSH Managing Safely Practice Test

IOSH Managing Safely Practice Test

IOSH Controlling Risks 3