Hazard Recognition and Risk Assessment Flashcards
6 cards from real STSC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Hazard Recognition and Risk Assessment flashcards as text
In construction risk assessment, what does the term 'residual risk' mean?
Answer: The risk that remains after all feasible controls have been implemented
Residual risk is the level of risk that remains after all practical hazard controls have been applied. It helps determine whether additional measures or PPE are still needed.
Which of the following is an example of an 'engineering control' used to reduce hazards on a construction site?
Answer: Installing guardrails around an elevated work platform
Engineering controls physically change the work environment or equipment to reduce hazard exposure — guardrails eliminate the fall hazard rather than just protecting a worker from its consequences.
A safety supervisor notices workers are repeatedly bypassing a machine guard. What is the MOST effective long-term solution?
Answer: Investigate why workers bypass the guard and redesign it to be user-friendly without compromising protection
Repeatedly bypassed guards often indicate a design problem. Investigating the root cause and redesigning the guard addresses the underlying issue rather than enforcing compliance against a poorly designed system.
Under OSHA 29 CFR 1926, which of the following activities requires a written permit before work can begin?
Answer: Entry into a permit-required confined space
29 CFR 1926.1203 requires a written entry permit for entry into permit-required confined spaces, which have serious hazards such as atmospheric dangers, engulfment risks, or configuration hazards.
What is the significance of the 'Fatal Four' in OSHA's construction industry focus?
Answer: The four leading causes of worker deaths in construction: falls, struck-by, caught-in/between, and electrocution
OSHA's 'Fatal Four' refers to the four leading causes of construction fatalities: falls, struck-by objects, caught-in/between hazards, and electrocution — which together account for the majority of construction worker deaths.
When assessing the severity of a potential hazard, what two factors are typically combined to produce a risk rating?
Answer: Probability of occurrence and severity of potential harm
Risk is typically assessed by combining the probability (likelihood) that the hazard will cause harm with the severity (consequence) of the potential injury or illness, producing a risk matrix rating.