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During a confined space entry, the atmospheric testing reveals 19.2% oxygen, 0% LEL, and 8 ppm hydrogen sulfide. Based on these readings, what action should be taken?

Correct Answer

A) Entry prohibited - oxygen deficient atmosphere

OSHA requires oxygen levels between 19.5% and 23.5% for safe entry. At 19.2%, this is an oxygen-deficient atmosphere and entry is prohibited until corrected.

Answer Options
A
Entry prohibited - oxygen deficient atmosphere
B
Entry is safe, proceed with work
C
Ventilate and retest before entry
D
Entry with supplied air respiratory protection only

Why This Is the Correct Answer

OSHA requires oxygen levels between 19.5% and 23.5% for safe entry. At 19.2%, this is an oxygen-deficient atmosphere and entry is prohibited until corrected.

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