SHP Environmental Health & Industrial Hygiene 2

Question 1

Which sequence correctly represents the industrial hygiene process?

Accepted Answer

Anticipation → Recognition → Evaluation → Control

Answer

The industrial hygiene process begins with Anticipation (predicting potential hazards), then Recognition (identifying existing hazards), Evaluation (measuring exposure), and Control (implementing corrective measures).

Question 2

The Wet Bulb Globe Temperature (WBGT) index is the standard tool used to evaluate which occupational health hazard?

Accepted Answer

Heat stress in outdoor and indoor environments

Answer

WBGT is a composite temperature index incorporating dry bulb temperature, natural wet bulb temperature, and globe temperature to assess heat stress risk for workers.

Question 3

Ultraviolet (UV) radiation produced during welding operations is classified as which type of radiation?

Accepted Answer

Non-ionizing radiation

Answer

UV radiation from welding is non-ionizing radiation because it lacks sufficient energy to remove electrons from atoms, unlike X-rays or gamma rays which are ionizing.

Question 4

Which air sampling approach is most appropriate for comparing a worker's exposure to an 8-hour time-weighted average occupational exposure limit?

Accepted Answer

Full-shift personal breathing zone sampling

Answer

Full-shift personal sampling captures the worker's breathing zone exposure across the entire work period, which is the appropriate method for comparing to 8-hour TWA occupational exposure limits.

Question 5

Why is local exhaust ventilation (LEV) generally preferred over general dilution ventilation for controlling chemical exposures?

Accepted Answer

LEV captures contaminants at or near the source before they disperse into the work environment

Answer

LEV removes contaminants at the point of generation before they can enter workers' breathing zones, making it far more protective than dilution ventilation which disperses contaminants throughout the space.

SHP - Safety and Health Professional Certified Practice Test

SHP - Safety and Health Professional Certified Practice Test

SHP Environmental Health & Industrial Hygiene 2