Chemical Safety Flashcards
7 cards from real NSC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Chemical Safety flashcards as text
Which of the following best describes a 'threshold limit value' (TLV) for airborne chemicals?
Answer: An ACGIH recommended guideline for airborne concentration levels
TLVs are advisory occupational exposure guidelines published by ACGIH (American Conference of Governmental Industrial Hygienists), not legally enforceable limits.
What is the correct method for disposing of a small amount of used solvent-soaked rags in the workplace?
Answer: Place them in a self-closing, approved flammable waste container
Solvent-soaked rags must be stored in self-closing, approved flammable waste containers to prevent spontaneous combustion and fire hazards.
A corrosive chemical is one that:
Answer: Destroys living tissue or degrades materials on contact
Corrosive chemicals cause destruction of living tissue (skin, eyes, mucous membranes) or material degradation on contact.
When is it acceptable to eat, drink, or apply cosmetics in an area where hazardous chemicals are used?
Answer: Only during designated break times away from the chemical area
Eating, drinking, and applying cosmetics should only occur in designated areas away from hazardous chemical zones to prevent accidental ingestion of contaminants.
What does a Hazardous Materials Information System (HMIS) rating of '3' in the health category mean?
Answer: Serious health hazard — major injury possible with short-term exposure
An HMIS health rating of 3 indicates a serious hazard where short-term exposure could cause serious, temporary or moderate residual injury.
Which engineering control is most effective at reducing worker exposure to airborne chemical hazards?
Answer: Local exhaust ventilation (LEV) at the source
Local exhaust ventilation captures and removes chemical contaminants at the source before they disperse into the worker's breathing zone.
What information is required on every container of a hazardous chemical in the workplace under HazCom?
Answer: Product identifier, hazard pictograms, signal word, and hazard statements
OSHA's HazCom standard requires labels to include a product identifier, GHS pictograms, signal word, hazard statements, precautionary statements, and supplier information.