SafetyCâu 567 / 700
A worker must clear a jam inside a powered concrete mixer. What is the BEST practice to prevent the machine from starting during the work?
a.Ask a coworker to hold the switch off
b.Lock out and tag out the energy source before reaching into the machine
c.Work quickly before the motor restarts
d.Simply turn the switch to off and begin
Giải thích
Hazardous energy must be isolated and secured with a lockout/tagout procedure so the machine cannot be energized while a worker is exposed to moving parts. Option a relies on a person who could be distracted. Option c gambles with a machine that could start. Option d does not prevent someone else from switching it on. Locking and tagging the energy source is the only reliable safeguard against unexpected startup.
Trích dẫn luật: Cal/OSHA Title 8 §3314Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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