bizSAFE Certification Singapore Hierarchy of Risk Control Questions and Answers

Question 1

A metal fabrication workshop in Tuas has a cutting machine that generates noise levels exceeding the 85 dB(A) permissible exposure limit set by Singapore's WSH (Noise) Regulations.
According to the Hierarchy of Risk Control, what is the most effective measure the company should consider first?

Accepted Answer

Replacing the noisy machine with a modern, quieter laser cutting system.

Answer

Issuing all affected workers with approved earplugs.

Answer

Implementing a job rotation schedule to limit each worker's exposure time.

Answer

Installing acoustic enclosures around the existing machine.

Question 2

In the context of the WSH (Risk Management) Regulations, which of the following is the best example of an 'Engineering Control'?

Accepted Answer

Installing a fixed guard on the rotating blade of a saw.

Answer

Conducting a daily toolbox meeting before starting work.

Answer

Requiring workers to wear safety boots on site.

Answer

Using a water-based paint instead of a solvent-based one.

Question 3

A company is developing Safe Work Procedures (SWPs) for handling chemicals in its Jurong Island facility. The implementation of these SWPs falls under which level of the Hierarchy of Risk Control?

Accepted Answer

Administrative Controls

Answer

Engineering Controls

Answer

Substitution

Answer

Personal Protective Equipment (PPE)

Question 4

A contractor is tasked with cleaning the facade of a high-rise building in the CBD. Several control measures are proposed. According to the principles promoted by Singapore's WSH Council, which of the following is considered the LEAST effective control measure?

Accepted Answer

Requiring workers to use a full-body harness and lanyard (fall arrest system).

Answer

Using a water-fed pole system that allows cleaning from the ground.

Answer

Using a Building Maintenance Unit (gondola) with rigid guardrails.

Answer

Scheduling the work to be done only during daylight hours and in good weather.

Question 5

What is the fundamental principle behind the structure of the Hierarchy of Risk Control as emphasised in Singapore's Risk Management Code of Practice (RMCP)?

Accepted Answer

To prioritise controls that are most reliable and place the least reliance on human behaviour.

Answer

To ensure that the cheapest control measures are implemented first to manage costs.

Answer

To focus on controls that are easiest and quickest to implement for all identified hazards.

Answer

To ensure that Personal Protective Equipment (PPE) is the primary control for all high-risk tasks.

Question 6

Under the WSH (Risk Management) Regulations, when a company identifies a risk, it must implement control measures. What does the mandated use of the Hierarchy of Controls imply?

Accepted Answer

The company must justify why higher-level controls like Elimination or Substitution are not 'reasonably practicable' before settling for lower-level controls like PPE.

Answer

The company must implement at least one control from each of the five levels for every high-risk task.

Answer

The company can choose any control measure as long as it lowers the risk level and is documented in the Risk Assessment.

Answer

The company is only legally required to implement Administrative Controls and PPE.

A metal fabrication workshop in Tuas has a cutting machine that generates noise levels exceeding the 85 dB(A) permissible exposure limit set by Singapore's WSH (Noise) Regulations.According to the Hierarchy of Risk Control, what is the most effective measure the company should consider first?

A metal fabrication workshop in Tuas has a cutting machine that generates noise levels exceeding the 85 dB(A) permissible exposure limit set by Singapore's WSH (Noise) Regulations.
According to the Hierarchy of Risk Control, what is the most effective measure the company should consider first?