SafetyCâu 105 / 110
Before servicing a sewage ejector pump, the plumber must control hazardous energy. What procedure prevents the pump from starting during service?
a.Lockout/tagout of the electrical disconnect, then verify zero energy
b.Post a verbal warning
c.Unplug only if convenient
d.Work quickly between cycles
Giải thích
Lockout/tagout requires de-energizing the pump at its disconnect, applying a personal lock and tag, and verifying zero energy by attempting to start it before hands go near moving parts. An automatic float could start the pump unexpectedly and cause severe injury. Each worker applies their own lock.
Trích dẫn luật: 29 CFR 1910.147Luyện miễn phí toàn bộ 110 câu hỏi — không cần đăng ký.
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