Confined Space Entry Atmospheric Monitoring Exercise

1. Check all that apply. While conducting atmospheric monitoring it's important to

Allow the instrument to continue monitoring before moving when readings are climbing

Allow adequate time for the meter to fully respond to the atmosphere

Remember that confined spaces may have a stratified atmosphere and must be monitored throughly

Bump test the meter prior to use

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2. True or False. All atmospheric monitors utilize a pump to draw the air over the sensors.

True

False

3. Hazardous atmospheric levels are interrelated and each hazard type should be evaluated together with others.

True

False

4. Methane is heavier than air.

True

False

5. Hydrogen sulfide is lighter than air.

True

False

6. Sensors take some time to react to the change in contaminant levels.

True

False

7. A bump test verifies the calibration by exposing the instrument to a known concentration of test gas.

True

False

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9. Match the typical alarm settings to the gas.

19.5%

10%

10 ppm

35 ppm

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