Industrial Hygiene and Health Flashcards
7 cards from real ASP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Industrial Hygiene and Health flashcards as text
Which skin absorption route is most significant for lipophilic (fat-soluble) chemicals in an occupational setting?
Answer: Percutaneous absorption through intact skin
Lipophilic chemicals readily penetrate the lipid-rich stratum corneum of intact skin, making percutaneous absorption the primary dermal route.
The noise dose for a worker is calculated as 100%. According to OSHA 29 CFR 1910.95, this worker is at the action level requiring which control?
Answer: Mandatory hearing protection and audiometric testing
A dose of 100% equals the OSHA PEL (TWA of 90 dBA), triggering mandatory audiometric testing, training, and hearing protector provision.
Which air-purifying respirator cartridge color code designates organic vapor protection in the US?
Answer: Black
NIOSH color coding assigns black cartridges to organic vapor protection under 42 CFR Part 84.
A wipe sample collected from a worker's hand shows lead contamination. This finding is most directly indicative of which exposure pathway?
Answer: Ingestion via hand-to-mouth contact
Lead on the hands poses a significant ingestion risk through hand-to-mouth contact, particularly during eating, drinking, or smoking.
Which industrial hygiene control is considered most preferred in the hierarchy of controls?
Answer: Substitution
Substitution (replacing a hazardous material or process with a safer one) is ranked above engineering controls and is second only to elimination in the hierarchy.
A chemical with a short biological half-life is best monitored using which biological monitoring timing strategy?
Answer: End-of-shift sample
Chemicals with short biological half-lives are quickly metabolized or excreted, so end-of-shift sampling captures peak biomarker concentrations.
Under OSHA's Hazard Communication Standard (HazCom 2012/GHS), which section of a Safety Data Sheet (SDS) lists occupational exposure limits?
Answer: Section 8 – Exposure Controls/Personal Protection
Section 8 of the GHS-aligned SDS contains PELs, TLVs, engineering controls, and recommended PPE for occupational use.