ASP Industrial Hygiene and Health 5

Question 1

Which skin absorption route is most significant for lipophilic (fat-soluble) chemicals in an occupational setting?

Accepted Answer

Percutaneous absorption through intact skin

Answer

Lipophilic chemicals readily penetrate the lipid-rich stratum corneum of intact skin, making percutaneous absorption the primary dermal route.

Question 2

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?

Accepted Answer

Mandatory hearing protection and audiometric testing

Answer

A dose of 100% equals the OSHA PEL (TWA of 90 dBA), triggering mandatory audiometric testing, training, and hearing protector provision.

Question 3

Which air-purifying respirator cartridge color code designates organic vapor protection in the US?

Accepted Answer

Black

Answer

NIOSH color coding assigns black cartridges to organic vapor protection under 42 CFR Part 84.

Question 4

A wipe sample collected from a worker's hand shows lead contamination. This finding is most directly indicative of which exposure pathway?

Accepted Answer

Ingestion via hand-to-mouth contact

Answer

Lead on the hands poses a significant ingestion risk through hand-to-mouth contact, particularly during eating, drinking, or smoking.

Question 5

Which industrial hygiene control is considered most preferred in the hierarchy of controls?

Accepted Answer

Substitution

Answer

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.

(ASP) Associate Safety Professional Practice Test

(ASP) Associate Safety Professional Practice Test

ASP Industrial Hygiene and Health 5