I-D-09 Self-Contained Breathing Apparatus (SCBA) Care & Inspection 01/08/2024

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Questions and Answers

What is the primary function of the Draeger BG4 closed-circuit breathing apparatus?

To filter atmospheric contaminants

To provide fresh air for indefinite use

To cool the inhaled air

To supply breathing air for approximately four hours (correct)

Which of the following components is part of the Emergency Breathing Support System (EBSS)?

High pressure quick-fill port

Carbon dioxide absorber

Full facepiece connection

Male/female port for buddy breathing (correct)

How does the Draeger BG4 closed-circuit breathing apparatus ensure that ambient air does not enter the system?

Through positive pressure in the breathing circuit (correct)

With a vacuum seal

By circulating air continuously

By using a disposable filter

What does the Heads Up Display (HUD) on the Draeger BG4 indicate?

Current air pressure and battery level Signup and view all the answers

What type of cartridge can be used in the Draeger BG4 for carbon dioxide absorption?

Both disposable and refillable cartridges Signup and view all the answers

The Scott Pak-Alert SE 7 is primarily designed to serve what function within the SCBA setup?

Alerting the wearer in distress Signup and view all the answers

What is the primary advantage of the Rapid Intervention Crew Universal Air Connection (RIC-UAC)?

Facilitates quick refilling from a high-pressure source Signup and view all the answers

In what scenario would the Draeger BG4 closed-circuit breathing apparatus be primarily used?

In open-cast mines and underground tunnels Signup and view all the answers

What indicates that the SCBA cylinder gauge is functioning properly?

It shows a pressure reading within 10% of the regulator gauge. Signup and view all the answers

If a firefighter's Vibralert activates, what immediate action should they take?

Notify the crew and leave the hazardous area. Signup and view all the answers

During the cylinder inspection, how full must the cylinder be at a minimum?

90% full or has a gauge pressure of 4,000 psi. Signup and view all the answers

What is indicated by the yellow light flashing slowly on the HUD display?

The cylinder is at half capacity. Signup and view all the answers

What action should be taken if a SCBA cylinder is damaged during inspection?

Depressurize and take it out of service. Signup and view all the answers

What part of the SCBA should be checked to ensure the proper function of the exhalation valve?

The regulator during breathing tests. Signup and view all the answers

How should the low-pressure alarm be verified during inspection?

By ensuring it sounds when air drops to 1,300 psi. Signup and view all the answers

What should be done if the Pak-Alert SE7 distress alarm indicates the batteries are dead?

Replace with six AA alkaline batteries immediately. Signup and view all the answers

What is the first action to take after pressing the manual alarm button on the Pak-Alert SE7?

Open the cylinder valve for system pressurization. Signup and view all the answers

What inspection procedure ensures that the SCBA harness fits correctly?

Adjust straps to their fully open position. Signup and view all the answers

What is indicated by a red light flashing rapidly on the HUD display?

The cylinder is nearly empty. Signup and view all the answers

What should all personnel assigned an SCBA confirm regarding their unit?

That it is logged as cleaned after each use. Signup and view all the answers

Which of the following indicates the need for changing the batteries of the SCBA unit?

The backframe lights flash red when the yellow button is pressed. Signup and view all the answers

Before resuming normal operation, what procedure must be completed?

Check the manual reset of the pre-alarm post inspection. Signup and view all the answers

What is indicated by a flashing green light on the SCBA after resetting?

The unit is in automatic mode. Signup and view all the answers

What sound confirms that a full alarm has been triggered on the SCBA?

Loud and almost continuous three-tone chirp. Signup and view all the answers

How long must the SCBA remain motionless to activate the pre-alarm condition?

20 seconds. Signup and view all the answers

What is the purpose of pressing the yellow RESET button twice?

To turn off the distress alarm. Signup and view all the answers

Which cleaning solution is appropriate for the SCBA?

Mild dishwashing detergent. Signup and view all the answers

What must be done to the regulator during the cleaning process?

It must be attached and pressurized to prevent water damage. Signup and view all the answers

What is the required action if the SCBA is found to be malfunctioning?

Tag it and report to the Unit OIC immediately. Signup and view all the answers

What occurs if the reset button is pressed twice while no air pressure is left in the system?

There will be no beep; only a quick two-tone chirp. Signup and view all the answers

What must personnel do when entering a contaminated environment?

Use SCBA and wear the mask continuously. Signup and view all the answers

What sound indicates that the green light on the SCBA is operational during the residual air release?

A 15-second beep sequence. Signup and view all the answers

What should be done after all SCBA cleaning is completed?

Allow the equipment to air-dry in a cool shaded area. Signup and view all the answers

Which condition does NOT require the use of an SCBA?

A normal atmospheric condition. Signup and view all the answers

What should be done if the SCBA unit becomes contaminated during use?

It must be cleaned thoroughly before reuse. Signup and view all the answers

Under what conditions can SCBAs be worn in standby mode?

They may be worn with the mask removed if permitted by the IC. Signup and view all the answers

What is the responsibility of the Unit OIC regarding SCBA equipment after a fire incident?

Supervise cleaning of all SCBAs and masks. Signup and view all the answers

What should be done prior to removing the SCBA mask in a fire area?

Ensure it is safe to remove by checking atmospheric conditions. Signup and view all the answers

What maximum pressure should each SCBA bottle be filled to?

4,500 psi Signup and view all the answers

What must be checked regarding CO2 absorbers before using a closed-circuit breathing apparatus?

They should be filled within the last six months. Signup and view all the answers

What action is prohibited regarding the empty air bottle valve?

Leaving it open. Signup and view all the answers

When can a closed-circuit breathing apparatus be used multiple times by the same user within 24 hours?

If the oxygen supply is adequate. Signup and view all the answers

What indicates that the closed-circuit breathing apparatus is functioning correctly after opening the cylinder valve?

The “Open cylinder valve” symbol is displayed Signup and view all the answers

What must be done to the closed-circuit breathing apparatus after every use?

Closed and sealed with the sealing cap. Signup and view all the answers

When should one commence retreat while using the closed-circuit breathing apparatus?

Upon hearing the 700-psi residual pressure warning Signup and view all the answers

What type of incident scenarios would require using SCBAs due to airborne contaminants?

Any operation involving potential contamination. Signup and view all the answers

What should be done immediately after unplugging the connecting piece from the full facepiece?

Close the cylinder valve Signup and view all the answers

How should the closed-circuit breathing apparatus be stored after use?

Upright and at a temperature above 32°F. Signup and view all the answers

Which of the following steps is NOT part of the maintenance process for the closed-circuit breathing apparatus?

Disinfect using boiling water Signup and view all the answers

What must happen if a BG4 is found to be functioning improperly?

It must be logged and reported immediately. Signup and view all the answers

How can the backlight of the Sentinel be activated?

Press the left button briefly Signup and view all the answers

What is the purpose of conducting an annual proficiency check for SCBA use?

To demonstrate proficiency under realistic conditions. Signup and view all the answers

What is the purpose of checking the oxygen supply every 10 to 15 minutes?

To maintain readiness and safety during use Signup and view all the answers

At what ambient temperature should ice not be used in the cooling system of the closed-circuit breathing apparatus?

Above 32°F (0°C) Signup and view all the answers

What action should be taken when preparing the closed-circuit breathing apparatus for use?

Test the apparatus for correct functioning. Signup and view all the answers

What occurs when the ambient temperature is displayed on the Sentinel?

The remaining period of use is hidden Signup and view all the answers

What is an important consideration when using the closed-circuit breathing apparatus under strenuous conditions?

Heat generated is normal due to CO2 absorption Signup and view all the answers

Which action should be performed last after using the closed-circuit breathing apparatus?

Take off the closed-circuit breathing apparatus Signup and view all the answers

Which of the following best reflects the storage conditions for the BG4 breathing apparatus?

In a cool, dark, dry, and clean place Signup and view all the answers

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.