Which of the following is the BEST example of an engineering control for chemical safety under Cal/OSHA?
a.Issuing employees one pair of nitrile gloves per month
b.Posting a sign that says "be careful"
c.Asking employees to hold their breath while applying products
d.Installing a local source-capture ventilation system at nail tables to remove vapors at the source
Explanation
Engineering controls remove or reduce a hazard at its source (e.g., source-capture ventilation, ventilated nail tables). They sit above administrative controls and PPE in the hierarchy of controls because they do not depend on worker behavior.
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