Atmospheric Monitoring Quiz (SOG 320-03)
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Questions and Answers

What action must be taken when the A2 alarm mode is activated?

  • Take appropriate actions based on the danger indicated. (correct)
  • Ignore the alarm until further notice.
  • Silence the alarm until gas levels are checked.
  • Acknowledge and silence the alarm immediately.

    • What percentage of oxygen must be present for the Drager X-am monitors to operate correctly?

  • 10% (correct)
  • 5%
  • 20%
  • 15%

    • Which of the following gases is NOT commonly monitored by both the Drager X-am 2500 and 5000?

  • Carbon Monoxide
  • Oxygen
  • Carbon Dioxide (correct)
  • Flammable Gases

    • What is a potential hazard of oxygen-enriched atmospheres?

    <p>Flammability and explosion risks</p> Signup and view all the answers

    What is the Normal Atmospheric condition for Carbon Monoxide (CO)?

    <p>0 ppm</p> Signup and view all the answers

    Which gas is characterized as an acute hazard that can cause rapid death?

    <p>Carbon Monoxide</p> Signup and view all the answers

    What should be done if a Lower Explosive Limit (LEL) alarm is reported?

    <p>Assign personnel to investigate the source of the alarm.</p> Signup and view all the answers

    Which of the following statements about the A2 alarm tone is TRUE?

    <p>It sounds continuously until gas levels drop below A2 values.</p> Signup and view all the answers

    What is the primary purpose of the PAC 5500 Single Gas CO monitors?

    <p>To alert crews of the presence of carbon monoxide gas</p> Signup and view all the answers

    Which type of monitoring involves a firefighter actively detecting specific hazards?

    <p>Active atmospheric monitoring</p> Signup and view all the answers

    What happens to the PAC 5500 Single Gas CO monitor once CO levels return to 0 PPM?

    <p>It automatically resets</p> Signup and view all the answers

    In what scenario should multi-gas monitors be used instead of PAC 5500 Single Gas CO monitors?

    <p>During structure fires or training burns</p> Signup and view all the answers

    When the A1 alarm mode of the Drager X-am monitors is activated, what is signaled to the operator?

    <p>A potentially dangerous environment is present</p> Signup and view all the answers

    What is a key characteristic of passive atmospheric monitoring?

    <p>It continuously monitors the atmosphere without assistance</p> Signup and view all the answers

    What should active atmospheric monitoring determine when investigating alarm activations?

    <p>If hazards exist before and after source removal</p> Signup and view all the answers

    What distinguishes the PAC 5500 Single Gas CO monitors in their operation?

    <p>They are intended for passive monitoring of carbon monoxide</p> Signup and view all the answers

    What should be done immediately if an atmospheric monitor alarm activates?

    <p>Inform the Incident Commander and conduct a primary search with full protective gear</p> Signup and view all the answers

    What type of respiratory protection is preferred during atmospheric monitoring?

    <p>Positive pressure Self Contained Breathing Apparatus (SCBA)</p> Signup and view all the answers

    Which of the following is NOT a type of toxicity mentioned that requires monitoring?

    <p>Methane toxicity (CH4)</p> Signup and view all the answers

    Who is responsible for ensuring atmospheric monitoring is conducted when indicated?

    <p>The Incident Commander or the Company Officer if not established</p> Signup and view all the answers

    Which equipment is necessary for a person performing atmospheric monitoring?

    <p>Full protective gear, including respiratory protection</p> Signup and view all the answers

    What is a necessary action before personnel can remove any respiratory protection after monitoring?

    <p>Ensure additional ventilation has been performed</p> Signup and view all the answers

    What knowledge should operators of atmospheric monitors possess?

    <p>Knowledge of the hazards being detected and usage of the monitor</p> Signup and view all the answers

    Which of the following statements regarding the involvement of personnel not wearing full protective gear is correct?

    <p>They must immediately evacuate the structure and/or hazard area</p> Signup and view all the answers

    What factor significantly affects the atmosphere around the Hot Zone during a fire incident?

    <p>Wind direction</p> Signup and view all the answers

    Who is responsible for determining the safety of removing respiratory protection?

    <p>Incident Commander</p> Signup and view all the answers

    What should be done with atmospheric monitoring readings obtained during an incident?

    <p>Enter them into the fire reporting system</p> Signup and view all the answers

    Which of the following units should receive particular attention in terms of ventilation?

    <p>Incident Command Post</p> Signup and view all the answers

    Which guideline should Fire Investigators refer to for respiratory protection?

    <p>SOG 800-05 Fire Scene Safety for Investigators</p> Signup and view all the answers

    What might the marking of formal Control Zones indicate during a fire incident?

    <p>The absence of Control Zones is acknowledged</p> Signup and view all the answers

    During which phase of fire operations should positive pressure ventilation and atmospheric monitoring remain in effect?

    <p>Overhaul operations</p> Signup and view all the answers

    What implies that personnel should be aware of the existence of Control Zones even if not marked?

    <p>Proper briefing and training</p> Signup and view all the answers

    What is the primary function of the Drager X-am 2500 4-Gas monitor?

    <p>To detect carbon monoxide and other activated detector alarm incidents</p> Signup and view all the answers

    Which of the following gases is monitored uniquely by the Drager X-am 2500 4-Gas monitor?

    <p>Hydrogen sulfide</p> Signup and view all the answers

    In which operational contexts is monitoring for hydrogen sulfide considered necessary?

    <p>Below grade operations or biological decomposition environments</p> Signup and view all the answers

    What toxic gases are uniquely monitored using the Drager X-am 5000 5-Gas monitor?

    <p>Hydrogen cyanide and organic vapors</p> Signup and view all the answers

    What is a notable feature of hydrogen cyanide in terms of its detection?

    <p>It is colorless with a bitter, almond-like odor detectable only by some individuals</p> Signup and view all the answers

    What makes organic vapors particulary hazardous to human health?

    <p>They may be carcinogenic and pose serious health risks</p> Signup and view all the answers

    What is the recommended action regarding atmospheric readings during a fire incident?

    <p>To obtain readings in areas close to any fire, regardless of exposure</p> Signup and view all the answers

    Which gas's odor fades rapidly, potentially leading to awareness issues?

    <p>Hydrogen sulfide</p> Signup and view all the answers

    Study Notes

    Atmospheric Monitoring Overview

    • Atmospheric monitoring is crucial for safety during emergency responses, performed by the Incident Commander or Company Officer when necessary.
    • Operators of atmospheric monitors must be knowledgeable about the equipment and hazards being detected.
    • Full protective gear, including a positive pressure Self Contained Breathing Apparatus (SCBA), is essential for personnel conducting monitoring.

    Alarm Activation Protocols

    • If an atmospheric monitor alarms, the Incident Commander must be notified immediately.
    • Conduct a primary search for victims while utilizing full protective gear and respiratory protection.
    • Establish proper Control Zones to contain hazards and prevent exposure.
    • Personnel without protective gear must evacuate the hazardous area immediately.
    • Additional ventilation is required before removing respiratory protection.

    Passive and Active Atmospheric Monitoring

    • Passive Monitoring: Continuous monitoring without assistance, primarily using PAC 5500 Single Gas CO monitors for carbon monoxide detection.
    • These monitors remain on at all times but are unsuitable for monitoring combustion processes or activated detector alarms.
    • Active Monitoring: Involves firefighters detecting hazardous gases in situations like propane leaks or alarm activations.

    Drager X-am Monitors

    • The Drager X-am models are used for active atmospheric monitoring:
      • The 4-Gas monitor detects oxygen, flammable gases, carbon monoxide, and hydrogen sulfide.
      • The 5-Gas monitor is used for monitoring during fire incidents, detecting hydrogen cyanide and organic vapors, alongside CO.
    • Alarm modes:
      • A1 Alarm: Acknowledgeable alert for dangerous environments.
      • A2 Alarm: Non-acknowledgeable alert indicating more severe danger.

    Hazards and Gas Profiles

    • Oxygen levels must be above 10% for monitors to function accurately; oxygen enrichment can cause explosions.
    • Flammable gases present an explosion risk; monitor for Lower Explosive Limits (LEL).
    • Carbon monoxide is a lethal gas; even small amounts can cause rapid toxicity.
    • Hydrogen sulfide is a colorless, dangerous gas detectable by its rotten egg odor, which fades quickly.

    Special Considerations for Monitoring

    • Use Drager X-am 2500 for below-grade operations or areas with biological decomposition.
    • Hydrogen cyanide produced in modern fires has a bitter almond odor, detectable at low concentrations by a minority of the population.
    • Organic vapors can be carcinogenic and should be monitored for health hazards.

    Safety Measures and Procedures

    • Wind direction impacts the atmospheric conditions around the hot zone; evaluate proximity to combustion products.
    • Control Zones may not be formally marked at every incident, but awareness is vital for safety.
    • The Incident Commander or Safety Officer determines the safety of personnel removing respiratory protection.
    • Maintain positive pressure ventilation and monitoring during overhaul operations.
    • Document atmospheric readings in fire reporting systems for accountability and safety tracking.

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    Related Documents

    Palm Beach County Fire Rescue SOG 320-03 Atmospheric Monitoring PDF

    Description

    Test your knowledge on atmospheric monitoring based on SOG 320-03 guidelines. This quiz covers essential topics such as oxygen deficiency and enrichment, flammable gases, and toxicity levels of various chemicals. Perfect for incident commanders and safety personnel.

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