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 1926.1204Practica las 1605 preguntas gratis — sin registro.
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Revisado por Abraham Chen — Licensed California General Contractor (CSLB License #1101856 — verificar)