SafetyPregunta 91 de 100
What control best reduces respirable crystalline silica exposure when sanding or grinding concrete?
a.Working faster to finish sooner
b.Using a household fan to blow dust around
c.Wet methods or tools with vacuum dust collection (HEPA), plus respiratory protection when needed
d.Sweeping the dry dust with a broom
Explicación
Silica dust is controlled at the source using water suppression or tools fitted with HEPA vacuum dust collection, which is the preferred engineering control under Cal/OSHA. Respiratory protection supplements these controls when exposures remain high. Dry sweeping and blowing dust make exposures worse.
Referencia Legal: Cal/OSHA Title 8Practica las 100 preguntas gratis — sin registro.
Preguntas relacionadas de este tema
- What is a key requirement when setting up an extension ladder against a wall?
- Cal/OSHA generally requires fall protection for workers on scaffolds or elevated surfaces above what approximate height?
- Why is lead exposure a special concern during paint removal on older buildings?
- How should solvent-soaked rags be handled to prevent a fire?
- What is required before a worker enters a permit-required confined space, such as a tank being coated?
- Where should a painter look first to learn the specific hazards and protective measures for a coating or solvent?
Última revisión: · proceso editorial
Equipo Editorial de PrepPass · Verificado con California CSLB C-33 Painting & Decorating Trade Exam · Cómo revisamos