安全第 1306 / 1605 题
Before entering a permit-required confined space, the entry permit must document that the atmosphere has been tested. Which is typically tested FIRST?
a.Temperature
b.Humidity
c.Noise
d.Oxygen level, then flammables, then toxics
解析
Atmospheric testing order is oxygen first, then combustible/flammable gases, then toxic contaminants, because oxygen readings affect the accuracy of the other sensors and oxygen hazards are immediately dangerous.
法律依据: 29 CFR 1926.1204免费刷完整 1605 道题库 — 无需注册。
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