HAZWOPER 40 Lesson 7 Quiz Verified Solutions
**Respiratory Protection**
1. What are the two main types of positive-pressure respirators?
Pressure-demand and continuous flow
2. Which type of assembly is approved by MSHA and NIOSH to protect against organic vapors, and is
tested against onl...
1. What are the two main types of positive-pressure respirators?
Pressure-demand and continuous flow
2. Which type of assembly is approved by MSHA and NIOSH to protect against organic vapors, and is
tested against only a single challenge substance?
Assembly tested against stannic chloride
3. What are the two types of fit tests that can be performed?
Qualitative fit test (exposing wearer to irritants or substances with distinctive odors or tastes) and
quantitative fit test
4. How do cartridges typically attach to the respirator face-piece?
Cartridges usually attach directly to the face-piece
5. What determines the Assigned Protection Factor (APF)?
Face-piece seal and exhalation valve leakage
6. Under what conditions can air-purifying respirators be used at hazardous waste sites?
When ambient atmosphere contains more than 19.5% oxygen
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