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Combustion Safety - Problem Set 3.5

Source(s) or Contributor(s)
Pacific Northwest National Laboratory
Question

  1. At what concentrations of indoor air ambient CO should a qualified professional be contacted to address the CO contamination due to a permanently installed appliance? Select all that apply.

    1. At CO concentrations of 9 ppm to 35 ppm.

    2. At CO concentrations of 36 ppm to 69 ppm.

    3. At CO concentrations of 70 ppm or greater.

  2. At what concentrations of indoor air ambient CO should the building be evacuated, and emergency services contacted? Select all that apply.

    1. At CO concentrations of 9 ppm to 35 ppm.

    2. At CO concentrations of 36 ppm to 69 ppm.

    3. At CO concentrations of 70 ppm or greater.

  3. At what concentrations of indoor air ambient CO should CO sources be turned off immediately? Select all that apply.

    1. At CO concentrations of 9 ppm to 35 ppm.

    2. At CO concentrations of 36 ppm to 69 ppm.

    3. At CO concentrations of 70 ppm or greater.

  4. Sort the following appliances from highest to lowest CO threshold limit.

    1. Refrigerator

    2. Water Heater

    3. Floor Furnace

    4. Oven/Boiler