Task Certification Module: Atmosphere

This Task Certification Module is designed to evaluate your understanding on Endothermic Atmosphere. It is important to thoroughly understand the hazards of Endothermic Gas when working on or around the Pusher Furnaces.

PROCEDURE:
  1. In order to safely maintain an Endothermic Gas System, what two precautions MUST be observed at all times?
    Keep the furnace pressurized to prevent oxygen from seeping into the furnace and have a source of ignition (flame) available where ever Endothermic Gas exits the furnace.
    Always have Nitrogen Gas readily available and never open access doors while the furnace contains atmosphere.
    Measure Dew Point regularly to make sure it never varies from the values listed on the DCP sheet and perform furnace burn-outs at least once per month.
    All answers are correct.

  2. What is the main purpose of Endothermic Gas?
    To generate heat and lower the dew point.
    To carburize the parts and generate heat.
    To generate heat and stabilize the dew point.
    To carburize the parts and pressurize the furnace.

  3. What gasses in Endothermic Gas are combustible?
    Nitrogen (N2), Oxygen (O2) and Carbon Dioxide (CO2).
    Carbon (C), Helium (HE) and Ozone (O3).
    Nitrous Oxide (N2O), Argon (AR) and Propane (C3H8).
    Methane(CH4), Carbon Monoxide(CO) and Hydrogen(H2).

  4. What normally determines the Endothermic Gas Flow rate into the furnace?
    Zone Endothermic Gas Flow Meters.
    Atmosphere Inlet Orifices.
    Effluent Stack Orifices.
    Carbon Controller.

  5. Atmosphere gas must NEVER be introduced into the furnace until all zones are above what temperature?
    900 °F.
    1150 °F.
    1650 °F.
    1400 °F.