SHP Environmental Health & Industrial Hygiene 2

Question 1

Which sequence correctly represents the industrial hygiene process?

Accepted Answer

Anticipation → Recognition → Evaluation → Control

Answer

Recognition → Anticipation → Evaluation → Control

Answer

Evaluation → Recognition → Anticipation → Control

Answer

Recognition → Evaluation → Anticipation → Control

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

Chemical vapor concentration

Answer

Noise-induced hearing loss risk

Answer

Ionizing radiation dose rates

Question 3

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

Accepted Answer

Non-ionizing radiation

Answer

Ionizing radiation

Answer

Particulate radiation

Answer

Neutron radiation

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

Short-term grab sampling

Answer

Fixed area sampling

Answer

Peak ceiling value sampling

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 systems are significantly less expensive to install and maintain

Answer

Dilution ventilation requires more complex airflow design calculations

Answer

LEV is more effective in large open work areas with multiple contaminant sources

Question 6

Which combination of ergonomic risk factors most significantly increases the risk of work-related musculoskeletal disorders (MSDs)?

Accepted Answer

Repetitive motion combined with awkward posture and high force exertions

Answer

Adequate lighting and proper workstation height

Answer

Infrequent heavy lifting using proper body mechanics

Answer

Using well-fitted personal protective equipment consistently

Question 7

OSHA's Respirable Crystalline Silica standard (29 CFR 1910.1053) establishes a PEL of how many micrograms per cubic meter for general industry?

Accepted Answer

50 µg/m³ as an 8-hour TWA

Answer

100 µg/m³ as an 8-hour TWA

Answer

250 µg/m³ as an 8-hour TWA

Answer

10 µg/m³ as an 8-hour TWA