CSCS High-Risk Activities 5

Question 1

What does a red exclusion zone tag on a scaffold mean?

Accepted Answer

The scaffold is under construction or has a defect and must not be used

Answer

A red tag indicates the scaffold is not safe for use due to it being incomplete, damaged, or under inspection.

Question 2

Which document must a worker on a construction site carry to prove competence for high-risk tasks under CSCS requirements?

Accepted Answer

A CSCS card relevant to their occupation and level of qualification

Answer

The CSCS card demonstrates that the holder has the required training and qualifications for their specific construction role.

Question 3

What is the main purpose of a pre-task hazard analysis (also called a Job Hazard Analysis or JHA)?

Accepted Answer

To identify hazards and establish controls before a specific task begins

Answer

A JHA systematically examines each step of a task to identify hazards and implement controls before work starts, reducing injury risk.

Question 4

When working with power tools near flammable vapors, what type of tool must be used?

Accepted Answer

Air-powered (pneumatic) or intrinsically safe explosion-proof tools

Answer

In atmospheres containing flammable vapors, only intrinsically safe or explosion-proof tools may be used, as standard electric tools can generate sparks that ignite vapors.

Question 5

A worker discovers a previously unknown underground fuel tank while excavating. What is the correct immediate action?

Accepted Answer

Stop work immediately, clear the area, and report to the supervisor and relevant authorities

Answer

An unknown buried fuel tank creates explosion, fire, and contamination risks; work must stop immediately and the hazard reported for specialist assessment.

CSCS - Construction Skills Certification Scheme Practice Test

CSCS - Construction Skills Certification Scheme Practice Test

CSCS High-Risk Activities 5