STSC Health Hazards and Hygiene 5

Question 1

Under the OSHA Hazard Communication Standard, what must a Safety Data Sheet (SDS) Section 8 specifically contain?

Accepted Answer

Exposure limits and engineering controls

Answer

SDS Section 8 (Exposure Controls/Personal Protection) lists occupational exposure limits, engineering controls, and required PPE.

Question 2

A construction site is near a former dry-cleaning facility. Workers should be most concerned about exposure to which contaminant in soil and groundwater?

Accepted Answer

Tetrachloroethylene (PCE/PERC)

Answer

Dry-cleaning facilities historically used tetrachloroethylene (perchloroethylene), a chlorinated solvent that persists in soil and groundwater and is a probable human carcinogen.

Question 3

What is the purpose of biological monitoring in occupational health programs on construction sites?

Accepted Answer

To measure the actual amount of a hazardous substance absorbed into a worker's body

Answer

Biological monitoring measures chemicals or their metabolites in blood, urine, or breath to assess actual worker body burden regardless of the route of entry.

Question 4

Which heat illness requires immediate emergency medical response and is characterized by hot, dry or moist skin, confusion, and loss of consciousness?

Accepted Answer

Heat stroke

Answer

Heat stroke is a life-threatening emergency where the body's thermoregulation fails, causing core temperature to rise dangerously and affecting brain function.

Question 5

When must a construction employer provide a medical examination under OSHA's lead standard (29 CFR 1926.62)?

Accepted Answer

When a worker is exposed above the action level of 30 µg/m³ for more than 30 days per year

Answer

Medical surveillance under the OSHA lead standard is triggered when workers are exposed above the action level (30 µg/m³ as an 8-hr TWA) for more than 30 days per year.

(STSC) Safety Trained Supervisor Construction Practice Test

(STSC) Safety Trained Supervisor Construction Practice Test

STSC Health Hazards and Hygiene 5