Confined Space Entry Atmospheric Monitoring Exercise

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

• A.

  True

• B.

  False

Methane is heavier than air.

• A.

  True

• B.

  False

Hydrogen sulfide is lighter than air.

• A.

  True

• B.

  False

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

• A.

  True

• B.

  False

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

• A.

  True

• B.

  False

Fill in the blank using one of the following key terms: stratified, hazardous, current, vertical. Confined spaces likely have poor ventilation which allows chemicals with different densities to settle into layers creating a ______________ atmosphere.

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

• A.

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

• B.

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

• C.

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

• D.

  Bump test the meter prior to use

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

• A.

  True

• B.

  False