NSC Workplace Hazard Identification & Risk Management 3 — Questions and Answers
Question 1: What is the primary purpose of floor load capacity markings in a warehouse?
- To indicate where forklifts are prohibited from parking overnight
- To prevent floor structural failure from overloading by forklifts and stacked materials (Correct answer)
- To show emergency exit pathways for pedestrians
- To designate areas where flammable liquids may be stored
Correct answer: To prevent floor structural failure from overloading by forklifts and stacked materials
Floor load ratings define the maximum weight per square foot the structure can support; exceeding them risks collapse.
Question 2: A forklift operator smells propane near the engine compartment of an LP-powered truck. What is the correct response?
- Continue operating but open nearby doors for ventilation
- Shut off the fuel valve, stop the engine, and report the leak immediately (Correct answer)
- Top off the propane tank to reseal the connection
- Increase engine speed to burn off the excess fuel
Correct answer: Shut off the fuel valve, stop the engine, and report the leak immediately
Propane is flammable and heavier than air; the operator must shut off the fuel, stop the engine, and report the hazard before any ignition source is introduced.
Question 3: Which action best reduces the risk of a forklift striking a pedestrian at a blind intersection?
- Requiring pedestrians to wear steel-toed boots
- Installing convex mirrors and requiring operators to sound the horn before entering (Correct answer)
- Painting the forklift a bright color
- Limiting forklift speed to 10 mph throughout the facility
Correct answer: Installing convex mirrors and requiring operators to sound the horn before entering
Convex mirrors provide visibility around corners, and sounding the horn warns pedestrians before a forklift enters a blind intersection.
Question 4: In risk management terminology, what is a 'residual risk'?
- The original risk before any controls are applied
- The risk that remains after all feasible controls have been implemented (Correct answer)
- A risk that only applies to temporary workers
- The cost of workers' compensation claims for the prior year
Correct answer: The risk that remains after all feasible controls have been implemented
Residual risk is what remains after controls are in place; it must be accepted, monitored, or reduced further.
Question 5: Which environmental condition most increases the risk of a forklift fire during cold-storage operations?
- Operators wearing insulated gloves that reduce grip sensitivity
- Condensation accumulating on electrical components as the truck warms up (Correct answer)
- Lower tire pressure due to cold air contraction
- Slower reaction times from operators in cold environments
Correct answer: Condensation accumulating on electrical components as the truck warms up
Condensation on electrical components when a cold-storage forklift enters a warm area can cause short circuits that may ignite a fire.
Question 6: What is the most reliable indicator that a racking system in a warehouse poses an imminent collapse hazard?
- Rack labels are missing or faded
- Upright columns are bent, cracked, or missing safety pins (Correct answer)
- Products are stored on lower shelves instead of upper shelves
- The rack exceeds 15 feet in height
Correct answer: Upright columns are bent, cracked, or missing safety pins
Structural damage to rack uprights — bending, cracking, or missing safety pins — directly compromises load-bearing capacity and signals imminent failure risk.
Question 7: Why is it hazardous to operate a diesel forklift in an enclosed building without adequate ventilation?
- Diesel exhaust cools the engine too rapidly in enclosed spaces
- Carbon monoxide and particulate emissions can reach dangerous concentrations indoors (Correct answer)
- The noise level exceeds OSHA limits only in enclosed areas
- Diesel engines produce excess condensation that damages flooring
Correct answer: Carbon monoxide and particulate emissions can reach dangerous concentrations indoors
Diesel combustion produces carbon monoxide, nitrogen oxides, and fine particulates that accumulate to toxic levels without sufficient fresh-air ventilation.
NSC Workplace Hazard Identification & Risk Management 3
What is the primary purpose of floor load capacity markings in a warehouse?