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PPE practice questions

26 questions from the hazwoper 40-hour practice test.

PPE practice test

10 questions, graded as you go, with the reason for every answer. No sign-up.

What this covers

Sample questions

What respiratory protection is part of a Level B ensemble?

  1. Full-facepiece air-purifying respirator with combination cartridges fitted
  2. Powered air-purifying respirator with a loose-fitting hood and HEPA filter
  3. Positive-pressure SCBA, or a positive-pressure airline unit with escape SCBA
  4. Half-mask air-purifying respirator, with an escape bottle carried on the belt
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C. Positive-pressure SCBA, or a positive-pressure airline unit with escape SCBA

Level B uses supplied breathing air, the same respiratory protection as Level A. Air-purifying respirators of any kind belong to Level C, which is what the wrong choices describe.

Reference: 29 CFR 1910.120 Appendix B

What is the main difference between Level A and Level B protection?

  1. Level A uses an SCBA while Level B uses an air-purifying respirator; the suits are the same
  2. Level A is for known chemicals while Level B is only for radiological hazards
  3. Level A is worn in the hot zone while Level B is worn only in the support zone
  4. Level A adds a totally encapsulating vapor-tight suit; respiratory protection is the same
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D. Level A adds a totally encapsulating vapor-tight suit; respiratory protection is the same

Both levels use positive-pressure supplied air. Level A adds a gas-tight, totally encapsulating suit for the highest skin protection, while Level B uses splash-protective clothing. An air-purifying respirator would make the ensemble Level C.

Reference: 29 CFR 1910.120 Appendix B

Which set of conditions must be met before Level C protection can be used?

  1. Contaminants unidentified, concentrations estimated, a combination cartridge fitted, and at least 16% oxygen
  2. Contaminants identified, concentrations measured, a suitable cartridge available, and at least 19.5% oxygen
  3. Contaminants identified, concentrations above IDLH, a suitable cartridge available, and at least 19.5% oxygen
  4. Contaminants unidentified, no odor noticed by the entry team, and a buddy standing by in the same level
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B. Contaminants identified, concentrations measured, a suitable cartridge available, and at least 19.5% oxygen

Air-purifying respirators work only when the contaminant is known, its level has been measured and is within the respirator's limits, a cartridge exists for it, and there is enough oxygen. They are never used above IDLH or for unknowns.

Reference: 29 CFR 1910.120 Appendix B; 29 CFR 1910.134(d)

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