/
High-Pressure Air Bags 101 High-Pressure Air Bags 101

High-Pressure Air Bags 101 - PowerPoint Presentation

lois-ondreau
lois-ondreau . @lois-ondreau
Follow
382 views
Uploaded On 2018-09-30

High-Pressure Air Bags 101 - PPT Presentation

SetUp and Safety HighPressure Air Bags This PowerPoint is intended as a general review of highpressure air bag setup and safety practices There are various different air bag systems currently used in Snohomish County Always refer to your departments SOPSOGs as well as manufacturers rec ID: 682526

pressure air high bags air pressure bags high bag lift safety load system relief maximum valve valves connect operation vehicle line stabilization

Share:

Link:

Embed:

Download Presentation from below link

Download Presentation The PPT/PDF document "High-Pressure Air Bags 101" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.


Presentation Transcript

Slide1

High-Pressure Air Bags 101

Set-Up and SafetySlide2

High-Pressure Air Bags

This PowerPoint is intended as a general review of high-pressure air bag set-up and safety practices.

There are various different air bag systems currently used in Snohomish County. Always refer to your departments SOP/SOG’s as well as manufacturers recommendations prior to use.

All high-pressure airbag operations should be performed in conjunction with proper stabilization practices. See Snohomish County Training Officers 2014 (First Quarter)

“Vehicle Stabilization”

http://www.snocountychiefs.org/divisions/fire_training_officers/quarterly_training.cfmSlide3

High-Pressure Air Bags

Safety:

Wear appropriate protective clothing, helmet, eye protection and gloves.

Never exceed maximum inflation pressure (usually 118-135 psi).

Never connect or disconnect system components while pressurized unless a safety in-line relief valve is in place.

Always ensure you are positioned on the opposite side of the expected load movement.

Never be below a load that has not been blocked or cribbed. Stay on your feet!

Always center the load on an airbag (can violently eject).

Never stack more than two air bags on each other during operations.Slide4

High-Pressure Air Bags

Safety continued:

Always place the smaller air bag centered on the top of the larger.

Inflate only enough to achieve desired lift.

If the desired object to be lifted has a small surface area of contact, always use plywood/ dimensional lumber or other rigid material between the bag and the object to distribute the load.

Always inflate slowly to prevent load shifting and stabilize/block as you go.

Ensure all valves between the air source and bags are in the closed position prior to turning on the air source.

Ensure the air bags are not in contact with hot or sharp objects prior to operation.Slide5

High-Pressure Air Bags

Safety continued:

Always have the bags connected to the air hose prior to placing under the load.

It is a good general practice to inflate the bag to only 75% of its stated lifting capacity . This is to avoid the “pillow” effect and reduces the potential for the bag to slip or kick out.

When stacking two bags the maximum tonnage of the smaller bag is the maximum that can be lifted.

Change the air supply when the bottle drops to 100 psi.

Reduce rated bag tonnage capacity by 50% to calculate the maximum tonnage capacity when lifting height exceeds 1” i.e., a 30 ton bag with a maximum lift of 10” will lift 30 tons 1” or 15 tons approximately 7.5”.

Only 1 person should give the controller the order to lift.Slide6

High-Pressure Air Bags Slide7

High-Pressure Air BagsSlide8

High-Pressure Air Bags

The dual “

deadman

” safety relief and control valve is one type of valve commonly found in Snohomish County. It has a single input from the air source and two outputs for dual bag operations.

Each output has a gauge for reading the pressure within each bag during use.

The control valve has quick

disconnect hose fittings and

dual push-button

controls to apply and release air pressure

to either

one or two lift bags.Slide9

High-Pressure Air Bags

Air hoses come in a variety of colors and are all inter changeable within the system.

When inflating or deflating air bags the hose color determines the commands for each individual bag. Example: “

u

p slow on yellow” or “down slow on red”.

In-line relief valves are quarter turn shut-off valves which allow the controller to be disconnected while maintaining pressure within the air bag. This is common for repositioning during multiple bag lifts.Slide10

High-Pressure Air Bags

The most common supply for air bag systems is an SCBA bottle. A large portion of Snohomish County use 4500 psi Scott bottles which need an adaptor to connect to the system.

There are two types of pressure regulators found with air bag systems. Each has a gauge indicating delivery pressure and supply pressure.

Piston

DiaphragmSlide11

High-Pressure Air Bags

Assemble all of the components:

Seat adaptor onto air bottleSlide12

High-Pressure Air Bags

Attach regulator to adaptorSlide13

High-Pressure Air Bags

Connect air line to regulatorSlide14

High-Pressure Air Bags

Remember to secure the locking rings!Slide15

High-Pressure Air Bags

Connect airline from regulator to the controllerSlide16

High-Pressure Air Bags

In-line relief valves should be connected to either the controller end or directly to each air bag in use.

Shown in the open position. Relief valves should always be closed prior to charging system.Slide17

High-Pressure Air Bags

Connect airline from the controller to the air bag with the in-line relief valve located at the desired end.Slide18

High-Pressure Air BagsSlide19

High-Pressure Air Bags

Turn on the air supply.

Adjust the regulator to the appropriate pressure.Slide20

High-Pressure Air Bags

Once the air bag system is assembled, move it into position for the

lift

(Scene

Survey‐ INNER and OUTER

Circle with stabilization i.e. chalk, keys & parking brake should already be complete)

Slide21

High-Pressure Air Bags

Prepare to receive commands for the lift operation.Slide22

Tactical Decision

It’s 07:00 on a Friday morning and you’re dispatched to a Car vs. Pedestrian.

Multiple callers report a child has been struck by a vehicle while waiting for the school bus.

Upon arrival you note a crowd has gathered around the scene and a witness states the child is still trapped under the vehicle.Slide23

Tactical Decision

This is what you see. You note the patients left leg is rolled on top of his right and pinned under the rocker panel.Slide24

Tactical Decision

What are your scene consideration?

What resources will be needed for the operation?

What stabilization methods will need to be used for an air bag operation?Slide25

Training

Gather all needed equipment for a high-pressure air bag operation.

Review air bag safety and stabilization practices with your crew.

Assemble the air bag system and lift a vehicle utilizing proper stabilization techniques.

Safely lower vehicle.Slide26