SeguridadPregunta 1306 de 1605

Before entering a permit-required confined space, the entry permit must document that the atmosphere has been tested. Which is typically tested FIRST?

a.Temperature
b.Humidity
c.Noise
d.Oxygen level, then flammables, then toxics

Explicación

Atmospheric testing order is oxygen first, then combustible/flammable gases, then toxic contaminants, because oxygen readings affect the accuracy of the other sensors and oxygen hazards are immediately dangerous.

Referencia Legal: 29 CFR 1926.1204

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Revisado por Abraham Chen Licensed California General Contractor (CSLB License #1101856 verificar)
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