Prior to entering a compartment containing...

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Question 1 of 205eccef9ebacbc34ba4d465c4

Prior to entering a compartment containing an atmosphere potentially dangerous to life or health and deficient in oxygen, you should don an approved breathing apparatus. Which of the listed devices would be suitable?

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🔍 Key Concepts

• Immediately Dangerous to Life or Health (IDLH) and oxygen-deficient atmospheres • Difference between air-purifying devices (filters, canisters) and air-supplying devices (independent air source) • USCG / SOLAS requirements for entry into enclosed spaces with unknown or toxic atmospheres

💭 Think About

• Ask yourself: If there might not be enough oxygen in the space, can a device that only filters air make that air breathable? • Which option provides its own supply of breathable air instead of relying on the air already in the compartment? • Which devices are designed mainly for escape only versus for planned entry and work in a dangerous atmosphere?

✅ Before You Answer

• Verify which option is classified as air-purifying (relies on ambient air passing through a filter or canister). • Verify which option is designed for entry into IDLH or oxygen-deficient atmospheres with its own air supply. • Confirm which devices in the list are described in your materials as escape-only equipment, not intended for initial entry.

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