Questions and Answers
What is the primary function of the MSA G1 SCBA?
To provide breathable air independent of the ambient atmosphere.
Which components supply breathable air to the user in the SCBA system?
A compressed air cylinder, pressure reducer, regulator, and facepiece.
What happens to exhaled air in the SCBA system?
It is released directly into the ambient atmosphere.
What safety regulations does the MSA G1 SCBA comply with?
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How does the facepiece minimize lens fogging?
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What is the maximum heat protection provided by the SCBA Facepiece?
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What are the two main components of the SCBA Inspection?
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What feature enhances speech communication in the SCBA facepiece?
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What must be done if the SCBA fails any conditions during the inspections?
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What is the unique characteristic of the SCBA Facepiece concerning personal use?
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List one aspect that should be inspected on the facepiece during the SCBA inspection.
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What should be checked regarding the exhalation valve in the facepiece?
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What condition must the o-ring and seal ring in the regulator be in?
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What should be inspected on the quick connect hose during the SCBA inspection?
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What are the signs of damage to look for in all straps of the SCBA?
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How should the quick connect fittings be checked during inspection?
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At what pressure does the primary low pressure warning device activate during use?
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What components are housed in the backplate of the carrier and harness assembly?
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What is the drag rating of the hop handle on the backplate?
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What feature do the shoulder pads provide to increase visibility?
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How many positions can the adjustable lumbar pad be set at for comfort?
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What distinguishes the low-profile Eclipse cylinder visually?
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What helps prevent the shoulder straps from slipping?
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What are the metal cylinder band and latch designed to enhance?
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What is the first step in removing the battery module?
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What should you check for when inspecting the battery module?
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How do you verify that the facepiece can maintain a negative pressure?
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What initial action must be taken to check the function of the power module?
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What visual indication should you observe on the regulator after opening the cylinder valve?
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What should you listen for when checking the power module?
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What is the acceptable pressure difference between the graphical display and the analog gauge?
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What must you do after testing the motion alarm using the reset buttons?
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What indicates that the PASS pre-alarm is sounding?
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How can you reset the PASS alarm before it goes into full alarm?
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What should you do to verify that the full alarm has been activated?
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What is the proper method to reset the PASS alarm?
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How do you manually activate the PASS alarm?
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What should be done to ensure the regulator is properly attached?
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What should a user do to start air flow in the regulator?
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What should you check regarding the function of the speaker module?
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Study Notes
SCBA Overview
- The MSA G1 SCBA supplies breathable air from a compressed cylinder through a pressure reducer, regulator, and facepiece.
- Exhaled air is expelled directly into the ambient environment.
Safety Regulations
- Complies with NIOSH regulation 42 CFR Part 84 for open circuit SCBA.
- Adheres to NFPA Standard 1981 for emergency services SCBA.
- Meets NFPA Standard 1982 for Personal Alert Safety Systems (PASS).
SCBA Components
- Operates independently in life-threatening atmospheres.
- Essential features include a snug and comfortable facepiece for secure air supply.
Facepiece Features
- Equipped with an inhalation valve, check valves, and a nosecup to prevent lens fogging.
- Mechanical speech diaphragm improves communication while wearing.
- NFPA compliant heat protection up to 500°F for 5 minutes.
Warning Devices
- Low pressure warning bell activates at approximately 1575 PSI, indicating 16 minutes of remaining service.
G1 Carrier and Harness Assembly
- Backplate houses power module, battery module, and pressure reducer.
- Features a cylinder band, shoulder pads, waist belt, and adjustable lumbar pad.
Backplate Characteristics
- Ergonomic design with large handles for storage and handling.
- Hop handle can drag loads up to 1000 lbs; side handles rated for 500 lbs.
Shoulder Pads Functionality
- Designed for optimized weight distribution and reduced strap slippage.
- Includes retroreflective material for increased visibility.
Lumbar Pad
- Adjustable for user comfort with a one-handed adjustment feature.
- Swivel capability allows for better movement with the user.
Cylinder Specifications
- Utilizes low-profile Eclipse cylinder, distinguishable by black color.
SCBA Inspection Procedures
- Regular inspections involve checking all components for signs of wear, damage, or contamination.
- Mandatory checks include functional tests and visual inspections.
Facepiece Inspection Criteria
- Examine lens for cracks, scratches, and deformation.
- Ensure exhalation valve operates effectively and performs without obstruction.
Regulator Inspection
- Ensure cleanliness, and check for intact seals and o-rings.
- Inspect quick connect fittings for integrity and functionality.
Pressure Reducer Testing
- Process for releasing the quick connect and securing the battery module is outlined.
Control Module and Alarm Functions
- Tests validate the proper operation of the HUD, power module, and alarm indicators.
- Functions of the alarm systems include both motion and manual activation tests.
Operational Checks
- Confirm proper air flow through regulator and the absence of unusual sounds.
- Verify speaker module performance by pressing the ON/OFF button to ensure it activates and deactivates correctly.
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Description
This quiz covers the safety regulations and compliance standards for Self-Contained Breathing Apparatus (SCBA) systems, focusing on the MSA G1 SCBA. You'll learn about the importance of the National Institute for Occupational Safety and Health (NIOSH) regulations and the National Fire Protection Association (NFPA) standards related to SCBA. Test your knowledge on how these systems supply breathable air and their regulatory frameworks.