CHST CHST - Construction Health and Safety Technician Health Hazards and PPE Questions and Answers 2

Question 1

What is the primary purpose of a supplied-air respirator (SAR) on a construction site?

Accepted Answer

To provide breathable air in oxygen-deficient or IDLH atmospheres

Answer

To filter out nuisance dust particles

Answer

To reduce noise exposure during demolition work

Answer

To protect against UV radiation from welding arcs

Question 2

Which health hazard is most commonly associated with prolonged exposure to crystalline silica dust on construction sites?

Accepted Answer

Silicosis

Answer

Contact dermatitis

Answer

Heat stroke

Answer

Carpal tunnel syndrome

Question 3

According to OSHA standards, what is the permissible noise exposure limit for an 8-hour time-weighted average?

Accepted Answer

90 dBA

Answer

80 dBA

Answer

85 dBA

Answer

95 dBA

Question 4

When working with lead-based paint removal on a construction project, which type of PPE combination is most appropriate?

Accepted Answer

Half-face respirator with P100 filters, disposable coveralls, and nitrile gloves

Answer

Safety glasses and leather gloves

Answer

Hard hat and steel-toe boots only

Answer

Dust mask and cotton work gloves

Question 5

What is the minimum Assigned Protection Factor (APF) required for a half-face air-purifying respirator?

Accepted Answer

10

Answer

5

Answer

25

Answer

50

Question 6

Which biological health hazard should a CHST be most concerned about when workers disturb bird or bat droppings during building renovation?

Accepted Answer

Histoplasma capsulatum

Answer

Legionella pneumophila

Answer

Staphylococcus aureus

Answer

Escherichia coli