When can you safely remove your SCSR after entering a shelter?

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Multiple Choice

When can you safely remove your SCSR after entering a shelter?

Explanation:
You keep the SCSR on until the shelter environment has been confirmed safe. The shelter must be purged to remove contaminated air, and atmosphere testing must show normal oxygen levels and contaminant concentrations well below safe limits. Only after everyone has entered and the air inside is verified as clear should you remove the SCSR. Clearing the air first protects everyone, not just the person inside the shelter, and ensures you’re not breathing in toxic gases or insufficient oxygen once you step out of the protection of the unit.

You keep the SCSR on until the shelter environment has been confirmed safe. The shelter must be purged to remove contaminated air, and atmosphere testing must show normal oxygen levels and contaminant concentrations well below safe limits. Only after everyone has entered and the air inside is verified as clear should you remove the SCSR. Clearing the air first protects everyone, not just the person inside the shelter, and ensures you’re not breathing in toxic gases or insufficient oxygen once you step out of the protection of the unit.

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