STSC Health Hazards and Hygiene 2

Question 1

Silica dust exposure in construction is primarily associated with which occupational disease?

Accepted Answer

Silicosis

Answer

Asbestosis

Answer

Coal worker's pneumoconiosis

Answer

Byssinosis

Question 2

OSHA's construction standard for crystalline silica (29 CFR 1926.1153) requires engineering controls for tasks that generate silica dust. The most effective engineering control is:

Accepted Answer

Using wet methods or local exhaust ventilation (LEV) to capture dust at the source

Answer

Requiring workers to wear N95 respirators

Answer

Scheduling silica-generating work at night

Answer

Posting 'Silica Hazard' warning signs around the work area

Question 3

Which of the following is a construction health hazard caused by repeated vibration exposure to the hands and arms?

Accepted Answer

Hand-arm vibration syndrome (HAVS)/vibration white finger

Answer

Carpal tunnel syndrome

Answer

Rotator cuff tear

Answer

Cubital tunnel syndrome

Question 4

What is the primary route of exposure that makes lead paint removal in construction a significant health hazard?

Accepted Answer

Inhalation of lead dust and fume

Answer

Dermal absorption through the skin

Answer

Ingestion through contaminated food

Answer

Eye contact with lead-containing surfaces

Question 5

Heat illness prevention on construction sites primarily involves:

Accepted Answer

Hydration (water every 15-20 minutes), rest in shade, and acclimatization for new workers

Answer

Providing sunscreen to all workers

Answer

Scheduling all outdoor work before 6 AM

Answer

Requiring workers to wear cooling vests at all times

Question 6

Adequate sanitation facilities on construction sites include potable water for drinking at a minimum rate of:

Accepted Answer

1 quart per worker per day

Answer

1 quart per worker per 4-hour period

Answer

1 pint per worker per hour in heat

Answer

2 liters per worker per shift