A crew is cutting concrete dry inside a remodel space and visible dust fills the room. What is the best first safety control?
Correct Answer
A) Use wet cutting or local exhaust.
Concrete cutting can expose workers to respirable dust; engineering controls such as wet methods or local exhaust should be used before relying only on cleanup.
Why This Is the Correct Answer
Concrete cutting can expose workers to respirable dust; engineering controls such as wet methods or local exhaust should be used before relying only on cleanup.
Why the Other Options Are Wrong
Option B: Open the windows and run a box fan to push the dust outside.
Open the windows and run a box fan to push the dust outside. may relate to another site control, but it does not remove or guard the silica and dust control exposure being tested.
Option C: Have workers wear cloth face coverings and keep cutting dry.
Have workers wear cloth face coverings and keep cutting dry. may relate to another site control, but it does not remove or guard the silica and dust control exposure being tested.
Option D: Wait and dry-sweep the settled dust at the end of the shift.
Wait and dry-sweep the settled dust at the end of the shift. may relate to another site control, but it does not remove or guard the silica and dust control exposure being tested.
Memory Technique
If Supervising Interior can still reach the worker, the control is decoration.
Reference Hint
Study anchor (closed-book): memorize Silica and dust control from Cal/OSHA Title 8 Construction Safety Orders; CSLB B General Building. / Cal/OSHA Title 8 construction dust and respiratory hazard controls; know the rule or calculation trigger without relying on exam-room lookup.
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