安全第 1287 / 1605 题
At what 8-hour time-weighted average noise level does OSHA construction require feasible administrative or engineering controls, and hearing protection?
a.120 dBA
b.90 dBA
c.70 dBA
d.60 dBA
解析
1926.52 sets the construction permissible noise exposure at 90 dBA as an 8-hour TWA. When exposure exceeds this, feasible controls must be used and hearing protection provided.
法律依据: 29 CFR 1926.52 / 1926.101免费刷完整 1605 道题库 — 无需注册。
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