High-Risk Activities Flashcards
7 cards from real CSCS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 High-Risk Activities flashcards as text
What does a red exclusion zone tag on a scaffold mean?
Answer: The scaffold is under construction or has a defect and must not be used
A red tag indicates the scaffold is not safe for use due to it being incomplete, damaged, or under inspection.
Which document must a worker on a construction site carry to prove competence for high-risk tasks under CSCS requirements?
Answer: A CSCS card relevant to their occupation and level of qualification
The CSCS card demonstrates that the holder has the required training and qualifications for their specific construction role.
What is the main purpose of a pre-task hazard analysis (also called a Job Hazard Analysis or JHA)?
Answer: To identify hazards and establish controls before a specific task begins
A JHA systematically examines each step of a task to identify hazards and implement controls before work starts, reducing injury risk.
When working with power tools near flammable vapors, what type of tool must be used?
Answer: Air-powered (pneumatic) or intrinsically safe explosion-proof tools
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.
A worker discovers a previously unknown underground fuel tank while excavating. What is the correct immediate action?
Answer: Stop work immediately, clear the area, and report to the supervisor and relevant authorities
An unknown buried fuel tank creates explosion, fire, and contamination risks; work must stop immediately and the hazard reported for specialist assessment.
What is the correct sequence when donning (putting on) a full-body fall arrest harness?
Answer: Put on the harness, adjust all straps for fit, then inspect and connect the lanyard at the anchor point
The correct sequence is to don and adjust the harness for a secure fit on the ground, inspect it, then connect the lanyard to a rated anchor point before working at height.
Under what circumstance is it acceptable to override an interlock device on a piece of construction equipment?
Answer: It is never acceptable to override a safety interlock device
Safety interlocks are engineered barriers that prevent hazardous machine states; bypassing them under any circumstance removes a critical layer of protection and is prohibited.