SafetyQuestion 530 of 700
A worker will enter a below-grade vault that may contain low oxygen or toxic gas. What is the BEST practice before entry into this permit-required confined space?
a.Enter quickly and leave if it feels stuffy
b.Test the atmosphere, provide ventilation, use an attendant and rescue plan, and follow confined-space entry procedures
c.Light a match to check for gas
d.Send in the newest worker to check it first
Explanation
A permit-required confined space demands atmospheric testing for oxygen, flammable gas, and toxics before and during entry, forced ventilation, a trained attendant outside, communication, and a rescue plan. Option b reflects this. Entering on feel (a) can cause rapid collapse, an open flame (c) can ignite gas, and sending an untrained worker (d) endangers a life; confined spaces can be immediately fatal without controls.
Law Reference: Cal/OSHA Title 8, Construction Safety OrdersPractice all 700 questions free — no signup required.
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