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
A worker reports that a co-worker is using a damaged extension cord with exposed wiring on the jobsite. Under OSHA standards, what should the supervisor do FIRST?
Answer: Remove the damaged cord from service immediately and replace it
Damaged extension cords with exposed wiring present an immediate electrocution hazard. OSHA 29 CFR 1926.403 requires damaged electrical equipment to be removed from service immediately.
What is the minimum safe approach distance from overhead power lines for construction equipment operating near lines carrying between 50kV and 200kV?
Answer: 15 feet
OSHA 29 CFR 1926.1408 requires a minimum 15-foot clearance from overhead lines energized between 50kV and 200kV for equipment operations unless the utility owner has de-energized and visibly grounded the lines.
Which type of hazard assessment is performed BEFORE a task begins to identify hazards specific to that particular job step?
Answer: Job Hazard Analysis (JHA)
A Job Hazard Analysis (JHA) is performed proactively before a task begins, breaking it into steps and identifying the specific hazard at each step along with appropriate controls.
What does OSHA require when an employer identifies an 'imminent danger' condition on a construction site?
Answer: Remove workers from the danger zone and correct the condition before allowing work to resume
An imminent danger condition — one likely to cause death or serious physical harm immediately — requires workers to be removed from the area and the condition corrected before work resumes, per OSHA Section 13 of the OSH Act.
Which of the following best describes a 'struck-by' hazard in construction?
Answer: A worker being hit by a moving object such as a falling tool, vehicle, or flying debris
A struck-by hazard occurs when a worker is hit by a moving object — including falling tools, equipment swinging loads, vehicles, or projectiles — and is one of OSHA's Fatal Four.
What is the primary purpose of a pre-task safety inspection (walkthrough) at the start of each workday?
Answer: To identify new or changed hazard conditions before work begins
A pre-task walkthrough identifies hazards created by overnight weather changes, other trades' work, equipment movement, or site conditions that may have changed since the previous day.