Which of the devices listed would be safe to use in a compartment with insufficient oxygen?
Direct Answer
Option B: Self-contained breathing apparatus.
In an oxygen-deficient atmosphere, only a self-contained breathing apparatus (SCBA) provides an independent supply of breathable air, making it safe for use. Dust masks, gas masks, or canister-type masks merely filter ambient air and offer no protection against oxygen deficiency, as emphasized in ISGOTT and SOLAS safety guidelines for enclosed space entry.
All Options
Detailed Explanation & Context
In an oxygen-deficient atmosphere, only a self-contained breathing apparatus (SCBA) provides an independent supply of breathable air, making it safe for use. Dust masks, gas masks, or canister-type masks merely filter ambient air and offer no protection against oxygen deficiency, as emphasized in ISGOTT and SOLAS safety guidelines for enclosed space entry.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Chemical Tanker Cargo Operations (CHEMCO).
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