CIRS CIRS Occupational Health & Industrial Hazards

Question 1

What is the primary focus of OSHA's General Industry Standard 29 CFR 1910 in the United States?

Accepted Answer

Establishing mandatory workplace safety and health regulations to protect general industry workers from recognized hazards

Answer

OSHA's 29 CFR 1910 establishes comprehensive safety and health standards for general industry employers, covering hazards from machinery and chemicals to emergency action plans.

Question 2

Which occupational exposure is causally linked to mesothelioma, a cancer of the pleural and peritoneal lining?

Accepted Answer

Asbestos fiber inhalation in construction, insulation, and shipbuilding industries

Answer

Mesothelioma is almost exclusively caused by prior occupational inhalation of asbestos fibers, with a latency period of 20–50 years between exposure and disease onset.

Question 3

In the hierarchy of hazard controls used in occupational health, which method is considered most effective?

Accepted Answer

Elimination — physically removing the hazard from the workplace

Answer

The hierarchy ranks elimination as most effective because physically removing the hazard provides complete protection, unlike controls that merely reduce or manage ongoing exposure.

Question 4

What does OSHA's 'Permissible Exposure Limit' (PEL) represent for airborne chemical hazards?

Accepted Answer

The maximum allowable concentration of a substance workers may be exposed to during an 8-hour time-weighted average workday

Answer

PELs are legally enforceable OSHA standards that set the maximum airborne chemical concentration permissible over an 8-hour TWA to prevent adverse health effects from occupational exposures.

Question 5

Which occupational lung disease is caused by chronic inhalation of crystalline silica dust and characterized by progressive pulmonary fibrosis?

Accepted Answer

Silicosis, common in mining, sandblasting, and construction workers

Answer

Silicosis is a fibrotic lung disease caused by inhaling free crystalline silica particles, leading to inflammation, scarring, and progressive loss of lung function with no cure.

CIRS - Certified Industrial Rehabilitation Specialist Practice Test

CIRS - Certified Industrial Rehabilitation Specialist Practice Test

CIRS CIRS Occupational Health & Industrial Hazards