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Question # 53

A confined space entry is planned. Atmospheric testing shows 15% oxygen. What is the correct action?

Options:

A.

Proceed with entry if workers use SCBA

B.

Ventilate the space until oxygen levels return to 19.5–23.5% before entry

C.

Continue work for short durations only

D.

Enter only if two attendants are present outside

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CHST Overview

Name Construction Health and Safety Technician
Code CHST
Vendor Construction and Industry
Certification Board of Certified Safety Professionals (BCSP)

CHST Questions