Supplied Air - SCBA

Summary

This script outlines the step-by-step procedure for inspecting and preparing a Self-Contained Breathing Apparatus (SCBA) for use. It includes checks on the facepiece, straps, regulator, cylinder, and backpack assembly. Key actions involve ensuring proper functionality of all components, verifying pressure levels, and performing seal checks. The process also emphasizes the importance of conducting safety checks, such as the alarm test and bypass valve operation. The procedure concludes with ensuring the equipment is properly donned and ready for use, including checks on the regulator and the cylinder.

Takeaways

• 😀 Verify the correct size, make, and model of the equipment before use.
• 😀 Inspect the facepiece, checking the straps, tabs, buckles, and harness for proper condition.
• 😀 Ensure the lens is free from scratches or nicks that could impair visibility.
• 😀 Check the ceiling surface of the facepiece for residue or defects that could affect your skin.
• 😀 Verify the condition of the attachment point and install the spectacle kit if necessary.
• 😀 Inspect the backpack to ensure the bench test date is valid and the assembly is in good condition.
• 😀 Check the regulator’s bench test date, gasket condition, latch functionality, and the operation of the air saver switch.
• 😀 Ensure the cylinder is full and within the required hydro test and manufacturer dates, and check for rust or corrosion.
• 😀 Perform an alarm check by verifying pressure on the remote gauge and ensuring the alarm activates at 25% pressure.
• 😀 Follow the buddy system to don the SCBA unit, ensuring proper fit with chin cup alignment and head harness adjustment.
• 😀 Perform both negative and positive pressure seal checks on the facepiece to ensure proper sealing.
• 😀 Ensure regulator attachment to the facepiece is secure and test the emergency bypass valve.
• 😀 Release and adjust the regulator latch, and ensure the air-saving switch is fully compressed during disconnection.
• 😀 Use the buddy system to remove the facepiece and ensure that the cylinder valve is closed and pressure is bled.

Q & A

What is the first step in ensuring the SCBA unit is ready for use?

The first step is to verify that you've been issued the correct size, make, and model of the SCBA unit.

How should the condition of the facepiece be inspected?

The facepiece should be inspected by checking the straps, tabs, buckles, and harness for any visible defects or damage.

What should be checked on the lens of the SCBA unit?

The lens should be held up to a light source and inspected for scratches or nicks that may affect visibility.

How do you inspect the condition of the cylinder?

You inspect the cylinder by checking the pressure gauge to ensure the cylinder is full, and verify the manufacturer and hydro test dates are within the allowed time frame. The cylinder should also be checked for any rust or corrosion.

What is the purpose of the emergency bypass valve?

The emergency bypass valve is designed to allow the user to bypass the regulator in case of malfunction, ensuring that air is still provided in an emergency situation.

How is the alarm check performed?

To perform the alarm check, open the cylinder valve, verify that the pressure on the remote gauge matches the cylinder gauge, and then bleed the pressure using the emergency bypass valve. The alarm should activate when the gauge reaches 25% of the cylinder pressure.

What is a negative pressure seal check and how is it done?

A negative pressure seal check is done by covering the facepiece opening, inhaling gently, and holding the breath for 10 seconds to ensure there are no leaks.

What is the purpose of the positive pressure check?

The positive pressure check ensures that no air is leaking from the facepiece by placing your hand over the opening and gently exhaling for 10 seconds.

What action should be taken after connecting the regulator to the facepiece?

After connecting the regulator, verify that the emergency bypass valve functions by opening it for 3 to 5 seconds and then closing it.

What should you do after removing the SCBA facepiece?

After removing the facepiece, ensure the cylinder valve is closed and that air pressure has been bled from the system.