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Questions and Answers
What is the primary function of the Draeger BG4 closed-circuit breathing apparatus?
What is the primary function of the Draeger BG4 closed-circuit breathing apparatus?
Which of the following components is part of the Emergency Breathing Support System (EBSS)?
Which of the following components is part of the Emergency Breathing Support System (EBSS)?
How does the Draeger BG4 closed-circuit breathing apparatus ensure that ambient air does not enter the system?
How does the Draeger BG4 closed-circuit breathing apparatus ensure that ambient air does not enter the system?
What does the Heads Up Display (HUD) on the Draeger BG4 indicate?
What does the Heads Up Display (HUD) on the Draeger BG4 indicate?
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What type of cartridge can be used in the Draeger BG4 for carbon dioxide absorption?
What type of cartridge can be used in the Draeger BG4 for carbon dioxide absorption?
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The Scott Pak-Alert SE 7 is primarily designed to serve what function within the SCBA setup?
The Scott Pak-Alert SE 7 is primarily designed to serve what function within the SCBA setup?
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What is the primary advantage of the Rapid Intervention Crew Universal Air Connection (RIC-UAC)?
What is the primary advantage of the Rapid Intervention Crew Universal Air Connection (RIC-UAC)?
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In what scenario would the Draeger BG4 closed-circuit breathing apparatus be primarily used?
In what scenario would the Draeger BG4 closed-circuit breathing apparatus be primarily used?
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What indicates that the SCBA cylinder gauge is functioning properly?
What indicates that the SCBA cylinder gauge is functioning properly?
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If a firefighter's Vibralert activates, what immediate action should they take?
If a firefighter's Vibralert activates, what immediate action should they take?
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During the cylinder inspection, how full must the cylinder be at a minimum?
During the cylinder inspection, how full must the cylinder be at a minimum?
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What is indicated by the yellow light flashing slowly on the HUD display?
What is indicated by the yellow light flashing slowly on the HUD display?
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What action should be taken if a SCBA cylinder is damaged during inspection?
What action should be taken if a SCBA cylinder is damaged during inspection?
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What part of the SCBA should be checked to ensure the proper function of the exhalation valve?
What part of the SCBA should be checked to ensure the proper function of the exhalation valve?
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How should the low-pressure alarm be verified during inspection?
How should the low-pressure alarm be verified during inspection?
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What should be done if the Pak-Alert SE7 distress alarm indicates the batteries are dead?
What should be done if the Pak-Alert SE7 distress alarm indicates the batteries are dead?
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What is the first action to take after pressing the manual alarm button on the Pak-Alert SE7?
What is the first action to take after pressing the manual alarm button on the Pak-Alert SE7?
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What inspection procedure ensures that the SCBA harness fits correctly?
What inspection procedure ensures that the SCBA harness fits correctly?
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What is indicated by a red light flashing rapidly on the HUD display?
What is indicated by a red light flashing rapidly on the HUD display?
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What should all personnel assigned an SCBA confirm regarding their unit?
What should all personnel assigned an SCBA confirm regarding their unit?
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Which of the following indicates the need for changing the batteries of the SCBA unit?
Which of the following indicates the need for changing the batteries of the SCBA unit?
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Before resuming normal operation, what procedure must be completed?
Before resuming normal operation, what procedure must be completed?
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What is indicated by a flashing green light on the SCBA after resetting?
What is indicated by a flashing green light on the SCBA after resetting?
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What sound confirms that a full alarm has been triggered on the SCBA?
What sound confirms that a full alarm has been triggered on the SCBA?
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How long must the SCBA remain motionless to activate the pre-alarm condition?
How long must the SCBA remain motionless to activate the pre-alarm condition?
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What is the purpose of pressing the yellow RESET button twice?
What is the purpose of pressing the yellow RESET button twice?
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Which cleaning solution is appropriate for the SCBA?
Which cleaning solution is appropriate for the SCBA?
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What must be done to the regulator during the cleaning process?
What must be done to the regulator during the cleaning process?
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What is the required action if the SCBA is found to be malfunctioning?
What is the required action if the SCBA is found to be malfunctioning?
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What occurs if the reset button is pressed twice while no air pressure is left in the system?
What occurs if the reset button is pressed twice while no air pressure is left in the system?
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What must personnel do when entering a contaminated environment?
What must personnel do when entering a contaminated environment?
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What sound indicates that the green light on the SCBA is operational during the residual air release?
What sound indicates that the green light on the SCBA is operational during the residual air release?
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What should be done after all SCBA cleaning is completed?
What should be done after all SCBA cleaning is completed?
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Which condition does NOT require the use of an SCBA?
Which condition does NOT require the use of an SCBA?
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What should be done if the SCBA unit becomes contaminated during use?
What should be done if the SCBA unit becomes contaminated during use?
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Under what conditions can SCBAs be worn in standby mode?
Under what conditions can SCBAs be worn in standby mode?
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What is the responsibility of the Unit OIC regarding SCBA equipment after a fire incident?
What is the responsibility of the Unit OIC regarding SCBA equipment after a fire incident?
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What should be done prior to removing the SCBA mask in a fire area?
What should be done prior to removing the SCBA mask in a fire area?
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What maximum pressure should each SCBA bottle be filled to?
What maximum pressure should each SCBA bottle be filled to?
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What must be checked regarding CO2 absorbers before using a closed-circuit breathing apparatus?
What must be checked regarding CO2 absorbers before using a closed-circuit breathing apparatus?
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What action is prohibited regarding the empty air bottle valve?
What action is prohibited regarding the empty air bottle valve?
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When can a closed-circuit breathing apparatus be used multiple times by the same user within 24 hours?
When can a closed-circuit breathing apparatus be used multiple times by the same user within 24 hours?
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What indicates that the closed-circuit breathing apparatus is functioning correctly after opening the cylinder valve?
What indicates that the closed-circuit breathing apparatus is functioning correctly after opening the cylinder valve?
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What must be done to the closed-circuit breathing apparatus after every use?
What must be done to the closed-circuit breathing apparatus after every use?
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When should one commence retreat while using the closed-circuit breathing apparatus?
When should one commence retreat while using the closed-circuit breathing apparatus?
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What type of incident scenarios would require using SCBAs due to airborne contaminants?
What type of incident scenarios would require using SCBAs due to airborne contaminants?
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What should be done immediately after unplugging the connecting piece from the full facepiece?
What should be done immediately after unplugging the connecting piece from the full facepiece?
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How should the closed-circuit breathing apparatus be stored after use?
How should the closed-circuit breathing apparatus be stored after use?
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Which of the following steps is NOT part of the maintenance process for the closed-circuit breathing apparatus?
Which of the following steps is NOT part of the maintenance process for the closed-circuit breathing apparatus?
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What must happen if a BG4 is found to be functioning improperly?
What must happen if a BG4 is found to be functioning improperly?
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How can the backlight of the Sentinel be activated?
How can the backlight of the Sentinel be activated?
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What is the purpose of conducting an annual proficiency check for SCBA use?
What is the purpose of conducting an annual proficiency check for SCBA use?
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What is the purpose of checking the oxygen supply every 10 to 15 minutes?
What is the purpose of checking the oxygen supply every 10 to 15 minutes?
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At what ambient temperature should ice not be used in the cooling system of the closed-circuit breathing apparatus?
At what ambient temperature should ice not be used in the cooling system of the closed-circuit breathing apparatus?
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What action should be taken when preparing the closed-circuit breathing apparatus for use?
What action should be taken when preparing the closed-circuit breathing apparatus for use?
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What occurs when the ambient temperature is displayed on the Sentinel?
What occurs when the ambient temperature is displayed on the Sentinel?
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What is an important consideration when using the closed-circuit breathing apparatus under strenuous conditions?
What is an important consideration when using the closed-circuit breathing apparatus under strenuous conditions?
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Which action should be performed last after using the closed-circuit breathing apparatus?
Which action should be performed last after using the closed-circuit breathing apparatus?
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Which of the following best reflects the storage conditions for the BG4 breathing apparatus?
Which of the following best reflects the storage conditions for the BG4 breathing apparatus?
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Study Notes
SCBA Overview
- Personnel handling atmospheric contamination must be equipped with Self-Contained Breathing Apparatus (SCBA).
- Draeger BG4 provides approximately four hours of breathing air, suitable for tunnels and maritime responses.
Draeger BG4 Features
- Closed-circuit system uses pure oxygen, with overpressure preventing ambient air entry.
- Exhaled CO2 is absorbed by a CO2 absorber, with options for disposable or refillable cartridges.
- Connected to a full facepiece with a dedicated connecting piece.
Emergency Breathing Support System (EBSS)
- Features low-pressure air connections for "buddy breathing" using another SCBA or Rapid Intervention Crew (RIC) bottle.
Heads Up Display (HUD)
- Located on the regulator, indicates current air pressure and battery status.
Rapid Intervention Crew Universal Air Connection (RIC-UAC)
- High-pressure quick-fill port on the SCBA for trans-filling air from RIC bottles.
Scott Pak-Alert SE 7
- Distress alarm system consisting of a sensor module, pressure switch, and control console.
- Alerts for low pressure conditions and operational status through a series of alarms and indicator lights.
SCBA Personnel Assignments
- Each unit position (including OIC, Driver/Operator, Hydrant FF, Nozzle FF) is assigned a specific SCBA.
SCBA Accountability and Inspections
- Users are responsible for SCBA care: cleanliness, function, and proper use logged for accountability.
- Inspections include checking masks, cylinders, regulators, harnesses, batteries, and distress alarms at the beginning of each shift.
Mask Inspection Protocol
- Ensure masks are clean with no damage, and check for proper fittings and seals.
Cylinder Inspection Protocol
- Cylinders should be maintained at over 90% capacity, free from damage with valid hydrostatic test dates; gauges must align within 10%.
Regulator and Battery Inspection
- Regulators checked for damage, with routine air delivery tests and alarm functionality confirmed.
- Battery checks involve testing power levels and replacing as necessary.
Pass Alarm Functionality
- Manual alarm checks validate operational status; alarm signals indicate need for reset or corrective action.
Cleaning and Disinfecting SCBA
- Thorough cleaning protocol after use, especially post-contamination; solutions should avoid harsh chemicals.
- Include pressurization during the cleaning process to protect internal components.
SCBA Mandatory Use Conditions
- SCBA is mandatory under contaminated conditions, oxygen-deficient atmospheres, and during firefighting operations.
- Personnel should not remove SCBA prematurely, particularly during overhaul operations.
Annual Proficiency Check
- Certified firefighters undergo an annual evaluation to demonstrate SCBA proficiency; failures are documented, leading to retraining.
Draeger BG4 Specific Guidelines
- Daily inspections required for masks and regulators; BG4 must be removed from service if malfunction occurs.
- Use of BG4 is subject to regulatory compliance, ensuring CO2 absorbers and oxygen cylinders are properly managed and tested.
Operational Procedures for BG4
- Visual and functional checks must be completed before use; proper handling and testing protocols for cylinder and cooling systems are necessary.
- Ice use is restricted to above freezing temperatures to prevent equipment failure.
General Guidelines
- Under no circumstances should an empty air bottle be left open; this can lead to moisture ingress.
- Exhaustive cleaning required when apparatus return to the station, alongside proper inspection and logging for malfunctioning equipment.### Closed-Circuit Breathing Apparatus Protocols
- “Open cylinder valve” symbol and dual alarm tone indicate the apparatus is functioning correctly.
- Keep the cylinder valve closed until preparations are complete.
- Remove the sealing cap and wait for the Sentinel to display pressure at 0 psi before proceeding.
- After preparation, fit the protective cap onto the connecting piece.
General Operating Instructions
- Closed-circuit apparatus operates automatically; CO2 absorption generates heat, especially under strenuous conditions, signaling normal operation.
- Teams should operate in pairs, ensuring safety and support.
- Check oxygen supply every 10 to 15 minutes during use.
- Plan exit strategies independent of low-pressure warnings.
- Begin retreat when the 700-psi residual pressure warning sounds; cease operation immediately upon low-pressure warning.
- Use the left button on the Sentinel to activate backlight for five seconds.
- Briefly press the right button to display ambient temperature in degrees Celsius, which will revert back to the remaining use period automatically.
Post-Use Procedures
- Unplug the connecting piece from the full facepiece by pressing its button while pulling it out.
- Close the cylinder valve immediately after disconnecting to allow air to exit the breathing circuit.
- Fit the protective cap on the connecting piece and remove the full facepiece.
- Switch off the Sentinel by pressing both buttons until a beep is heard, displaying battery status for three seconds.
- After powering off, remove the closed-circuit breathing apparatus and arrange for servicing.
Storage and Maintenance Guidelines
- Disassemble the apparatus for maintenance, check for faults.
- Clean and disinfect using lukewarm water and approved disinfectant; ensure thorough drying of components.
- Components must dry completely in a Draeger drying cabinet before reassembly to avoid mold growth.
- Store the apparatus in a dark, cool, dry, and clean location ready for future use.
- Service and repairs are managed by the Air Program Bureau through an online service request system.
Annual Testing Requirements
- All BG4 units must undergo an annual bench test using the Draeger testing unit, facilitated by the Air Program.
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Description
This quiz focuses on the usage and training related to the Draeger BG4 closed-circuit breathing apparatus. Participants will learn about its operation in environments with atmospheric contamination, particularly in mining and maritime contexts. Understanding the equipment's capabilities is essential for effective emergency response protocols.