Common HazardsCâu 38 / 100
Before entering a permit-required confined space, what must be done regarding the atmosphere?
a.Nothing, just enter quickly
b.Light a match to check for gas
c.Test the atmosphere for oxygen, flammability, and toxicity
d.Spray air freshener
Giải thích
The atmosphere of a permit-required confined space must be tested before entry for oxygen content, flammable gases, and toxic contaminants, in that order. Testing continues or is monitored during entry. Never rely on smell or appearance to judge atmospheric safety.
Luyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- What does 'housekeeping' on a construction site help prevent?
- A rigging chain snaps and the load drops. Which Focus Four hazard is most directly involved?
- What is a permit-required confined space?
- Which of the following is an engineering control for a construction hazard?
- What is the main reason to keep workers out of the 'swing radius' of a crane or excavator?
- Which is the correct order of the hierarchy of controls from most to least effective?
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Đội Ngũ Biên Tập PrepPass · Đối chiếu với OSHA 30-Hour Construction Safety · Quy trình kiểm tra