Number One In The World For a Reason ® ® Holmatro Holmatro HLB Lifting Bag Systems What the...

Number One In The World For a Reason Number One In The World For a Reason

®®HolmatroHolmatro

Holmatro HLB Lifting Bag Systems

What the Rescuer Needs to Know Before Operating The System

©2004 Holmatro, Inc.



Session Objective

• The Objective of this session is to increase the user’s knowledge of the proper operation, use and care of the Holmatro HLB Lifting Bag System

• This Training session does not take the place of or supercede any training protocol required by your department’s SOPs for performing rescue using these systems.



Personal Responsibility Code

1. Firefighting and Emergency Response are inherently dangerous activities requiring proper training in their hazards and the use of extreme caution at all times.

2. It is your responsibility to read and understand any user’s instructions provided with any piece of equipment you may be called upon to use.

3. It is your responsibility to know that you have been properly trained in Firefighting and/or Emergency Response and in the use, precautions, and care of any equipment you may be called upon to use.

The member companies of FEMSA that provideemergency response equipment and services wantresponders to know and understand the following:



Personal Responsibility Code

4. It is your responsibility to be in proper physical condition and to maintain the personal skill level required to operate any equipment you may be called upon to use.

5. It is your responsibility to know that your equipment is in operable condition and has been maintained in accordance with the manufacturer’s instructions.

6. Failure to follow these guidelines may result in death, burns or other severe injury.

Fire and Emergency Manufacturers and Services Association, Inc.

P.O. Box 147, Lynnfield , MA 01940

www.FEMSA.org

Copyright 2004 FEMSA. All Rights Reserved.



Program Outline

• How Do Lifting Bags Work?• Lifting Bag Characteristics & Specifications

– Construction– Chemical Resistance– Temperature Range– Warranty

• Product Range– Lifting Bags– Accessories



Program Outline

• Operation of Lifting Bags– Connection– Disconnection

• Proper Lifting Techniques• Post-use Inspection• Care and Storage• Training• Knowledge Retention Test



How Do Lifting Bags Work?

• Lifting bags are capable of lifting enormous loads

• In our case up to 150,532 lbs!• Lifting force is created by applying a

specified pressure across a known area.• The scientific name for this simple

principle is:– Pascal’s Principle



Pascal’s Principle:

P x A=FPressure

times Area Equals Force



Operating Pressure

• Our system operates at a maximum of 116 psi/8 bar

• This represents

the “P” in the equation



Surface Area• This HLB-20 lifting

bag measures 20.125” x 20.125”

• Surface area then equals 405 in sq.

• This represents the

“A” in the equation.20.125 inches

20.1

25 in

ches



Let’s Plug In The Numbers…

P x A=F116 pounds/in² X 405 in² = 46,980 lbs

46,980 lbs ÷ 2,200 lbs/ton* = 21.35 tons of lift*Metric ton

46,980 lbs ÷ 2,000 lbs/ton* = 23.49 tons of lift*USA (short) ton



OK…Now I’m Confused

• This is an HLB-20, right?• Why didn’t the answer come out to exactly

20 tons? • Okay, just a couple more items to thoroughly

confuse you, then I’ll clear everything up!



We must consider…

• The construction of any brand of lifting bag is basically an envelope design

• Because this “envelope” is formed by the four sealed edges of the bag…

• The inflation area does not include the ENTIRE surface area of the bag.

• The actual surface area is the total minus whatever the small area of the edges equals



Like this…

• Once we take into account the loss of area for the edges

• We can see the actual useable area of the bag



Let’s re-do the math…

• Actual surface area is 19.54 in x 19.54 in or:

• 381.81 in²• 381.81in ² x 116 psi =

44289.96 lbs.• Round up to make it

simple and divide by 2,200 lbs gives

• 20.13 metric tons 19.54 inches



Inflation Characteristics• Next we must consider what happens

when we introduce compressed air into the lifting bag…

• As the air volume increases the bag becomes more convex or rounded…



Inflation Characteristics• This gives us lift height and at the same

time…• Reduces the surface area in contact with

the object being lifted



Contact Area vs. Surface Area

• So far we have looked at the available surface area of the bag and used that to calculate the maximum lift of the bag.

• In actual use what really matters is the contact area of the bag.

• Whatever the actual contact area is between the object being lifted and the surface of the bag determines how much can be lifted, and how high!



Contact Area

Is the total area (in²) of the bag that comes in contact with the

object to be lifted.



View from the Top

Object being lifted

Contact Area:

381.81in²

x 116psi

=44,290 lbs

0.0”



View from the Top

Object being lifted

Contact Area:

133.8in²

x 116psi

=15,925 lbs

4.75”



View from the Top

Object being lifted

Contact Area:

84.9in²

x 116psi

=9856 lbs

6.25”



View from the Top

Object being lifted

Contact Area:

26.27in²

x 116psi

=3,047.3 lbs

8.75”



Let’s Graph Our Example…

Lift Capacity Vs. Lift Height - HLB20

44,290

15,9259,856

3,0470

10,000

20,000

30,000

40,000

50,000

0 4.75 6.25 8.75

Lift Height (in.)

Lift Capacity (lbs)



To Sum It All Up

• The higher the bag lifts an object the smaller the contact area becomes…

• Therefore the higher we lift, the less weight we can lift

• To maximize our lifting we must maximize contact area!



To Sum It All Up

• Force on an object is created by the amount of contact area x the working pressure of the system.

• Pascal’s Principle can be reworded for our purposes as:

System Pressure x Contact Area = Amount of Force Possible

P x A = F



Lifting Rules of Thumb

• Most frequently we are needing lift height not lift capacity…most passenger cars weigh between 2-4 tons.

• To lift one ton (2,000 lbs) only requires a little more than 4” x 4” (16 in²) of contact area.

• Two tons requires only about 6” x 6” (36 in²) of contact area.

• How much area is required to lift 4 tons?– 68.9 in², or 8.3” x 8.3”



Lifting Bag Characteristics

Construction



• Holmatro HLB series bags are made of a specialized blend of rubber, reinforced by three Kevlar® plies throughout the circumference.

• To avoid stretching during use, the Kevlar® is pre-stressed before being incorporated in the construction of the bag.

Construction

Cross section



Construction

• For durability, the female fitting on the bag is vulcanized in place

• The male connector is easily field replaceable



Construction

• All labels are vulcanized into the bag

• Serial number and production code is stamped into each bag



Icon Based Labels

• Product labels are icon-based for international use



• Don’t exceed 116 psi/8 bar working pressure

• Don’t add weight to a lifted load

• Read operation manual before use

• Provide protection against sharp protrusions

• Crib as you lift• Do not stack more than

2 lifting bags. Place the larger bag on bottom

Icon Based Labels

Never place hard sharps protection on top of bag!!

Only use soft protection which can be sacrificed, such as a

truck mud flap, etc.



Icon Based LabelsModel number

Part number

Maximum lift height

Air volumeMaximum lift capacity



• Wear proper eye protection

• Never place cribbing between the bag and the load

• Wear safety shoes• Wear proper

protective gloves• Wear proper

protective clothing

Icon Based Labels



Construction

• Hi visibility centering mark is vulcanized onto both sides of the bag to make proper placement easy



Construction

• Largest bags (HLB-40 & HLB-67) have removable handles at each corner to make placement and carrying easier



Construction• Holmatro has a

unique grip pattern for better performance

• This grip pattern is molded into the bag, not a separate layer added later

• “L” shaped grooves lock two bags together when stacked



Chemical Resistance

• Holmatro lifting bags are rated for resistance to a broad range of chemical substances.

• A chemical resistance chart is part of the Owner’s Manual that comes with each system.



Temperature Range

• Even though lifting bags are formulated of rubber compounds, they still offer a very broad operating range

• For continuous use the temperature range is:

-22°F (-30°C) to 131°F (55°C)



Warranty for

Holmatro® airbags and haz-mat equipment

“…High pressure airbags, parts and accessories are guaranteed against defects in material and workmanship for a period of one year from the date of purchase from Holmatro

or from an officially appointed distributor of Holmatro.”



Product Range

• Holmatro offers a complete range of 10 different sized lifting bags

• Lifting capacities range from 1 to 73 tons• Bags come in either square or rectangular

versions



Accessories

• Lifting Bag systems are available with a variety of accessory kits to meet your needs…



Accessories• Pressure regulators• Control units• Color coded air

hoses for identification

• Shut off hoses with safety relief valves

• ALL accessories come standard with auto locking quick connect couplers



Pressure RegulatorsFeatures

• Available in two models:– PRV120 for 2216 psi

air bottles– HPRV120 or 4500 psi

air bottles • Hand tight nuts for

connection to air bottle• Two gauges:

– Input pressure gauge– Output pressure

gauge• Manual regulator

pressure adjustment key Shown: HPRV120



Pressure RegulatorsConnection to air bottle

• Ensure o-ring seal is present before attaching to cylinder.

• Ensure that regulator adjustment key is loosened (turn counter-clockwise) 1-2 turns

• Attach regulator to air bottle and tighten nut by hand.

• High pressure (input) gauge is closest to cylinder

• Flow pressure (output) gauge shows pressure to lifting bag

Shown: PRV120



Control UnitsFeatures

• Available in three models: – as single SCV10U– double DCV10U (shown) and– heavy duty HDC10U

• All models have quick connect auto locking couplers on input and output ports

• All models have built in factory set safety relief valves

• All controls have a dead man function

Output to bags

Inpu

t fro

m r

egul

ator



Control UnitsOperation

• On SCV10/DCV10 models

• Top “+” button allows air from cylinder to enter lifting Bags

• Bottom “-” button allows air from lifting bags to be expelled through control unit to outside

Model DCV10



Control UnitsOperation

• On HDC10 model• Pulling joystick towards

operator allows air to flow to bag

• Pushing joystick away from operator allows air to be expelled through control unit to outside

Model HDC10



Air Hoses

• Air hoses are constructed of polyurethane with a special reinforcing fiber weave

• Special weave design allows push in fittings, making them field replaceable

• Couplers are automatic self-locking type• To connect: push male nipple into female

coupler• To disconnect, rotate silver collar 1/4 turn, and

pull back on collar.



Shut Off Hoses

• Shut off hoses w/safety relief valve attach to lifting bag allowing over pressure protection to remain when disconnecting from control unit



Operation of Lifting Bags

• Connection of the system should be accomplished quickly.

• Practice proper connection sequence to become familiar with all components



Connection SequenceWhen used with compressed air bottle

1. Connect the air hose between the bag and the control unit• Connect shut off hoses now if needed during lift operation

2. Connect the pressure regulator to the air bottle.3. Connect the air hose from the pressure regulator to the control

unit.4. Open the compressed air bottle. The high pressure gauge, which

is the gauge closest to the bottle, indicates the pressure in the bottle.

5. The other gauge shows the pressure that will flow to the lifting bag. Set the regulator so that the lifting bag pressure is 116 psi maximum.

6. Place the lifting bag under the object to be lifted. The system is now ready for use.



1. Connect the air hose between the bag and the control unit



2. Connect the pressure regulator to the air bottle.



3. Connect the air hose from the pressure regulator to the control unit.



4. Open the compressed air bottle. The high pressure gauge, which is the gauge closest to the bottle, indicates the pressure in the bottle.



5. The other gauge shows the pressure that will flow to the lifting bag. Set the regulator so that the lifting bag pressure is 116 psi maximum.



6. Place the lifting bag under the object to be lifted. The system is now ready for use.



Lifting Operations

• As with any rescue operation, safety of the rescuer and patients is the priority

• Always exercise caution when performing lifting operations

• Always have plenty of cribbing material available to support the load AS IT IS BEING LIFTED.

• NEVER leave a load supported only by a lifting bag.



Lifting Operations

• SAFETY Considerations• Placement of lifting bags• Adjusting height of lifting bags• Stacking lifting bags• Inflation sequence• Lowering the load



Safety

• Avoid placing yourself under an unstable load

• Never stack more than two (2) lifting bags• Never place anything between 2 lifting

bags• Chock vehicle wheels before beginning

any lifting operation• Follow all warnings on the lifting bag label

and in the users manual



SafetyOperator Position

• Maintain a safe distance during lift• If space permits, position yourself to the

side of possible ejection path of lifting bags



SafetyImproper Operator Position

• This operator should be to the side of the possible ejection path of the lifting bags



SafetyImproper Placement

• These bags have not been centered under the rocker channel

• This will lead to bags shifting position during inflation…



SafetyShifting Bags

• These bags have shifted position…notice the angle

• They represent a potential ejection hazard



SafetyProper Operator Position



Placing Lifting Bags• Locate lifting bag so that the

centering mark is directly underneath the object to be lifted.

• Remember to look for maximum contact area between bag and load when placing bag

• Protect the top of the bag against sharp objects by placing SOFT protection that can be sacrificed between bag and the load. (i.e. truck mud flap)

• NEVER place hard objects between load and top of bag surface

• IMPORTANT! Be conscious of heat sources under vehicle, i.e. catalytic converter

Rocker channel



Placing Lifting Bags

• When there is not enough insertion space for bag placement you may need to use another device to create space

• Holmatro’s power wedge can create a 2 inch space from only ¼ inch gap…



Adjusting Height• Sometimes the object

being lifted is high above the lifting surface (i.e. large vehicle, SUV, etc..)

• In this case you can build a box crib beneath the object

• Always place lifting bags on TOP of cribbing



Single Bag Lift

• Because the maximum height of any Holmatro lifting bag is 1” they are easily placed under loads with minimum clearance.

• Once lift is achieved, crib the load and continue

• If more lift height is needed, you can now introduce a second bag on top of the first



Stacking BagsTwo Bag Lift

• When space permits and maximum lift height is desired, place both bags beneath load.




• Inflate the bottom bag FIRST




• Complete the lift by inflating the top bag

• Place cribbing to secure lifted object



Inflation SequenceWith lifting bag system correctly connected and bags properly placed you can

now begin the lift

1. Using the controller, begin slowly inflating the bottom bag

2. Place cribbing as the load begins to rise

3. Once an adequate height is reached secure the load with cribbing.

4. Leave the bag inflated. If using shutoff hose, close quarter turn valve.

5. Air supply hose may now be disconnected from lifting bag



Deflation Sequence

• Always deflate bags using the control unit• Carefully remove cribbing. It may be

necessary to slightly inflate lifting bags.• If using two lifting bags, deflate in the

opposite order of lift sequence:– Deflate top bag first– Deflate bottom bag last



Disconnecting the System

• Once load is securely lowered:• Turn off valve on air bottle• NOTE: There is still air pressure in the rest

of the lifting bag system• Release pressure from system. On

SCV/DCV10 units, a quick way to achieve this is to depress both “+” and “-” buttons at the same time.

• Now you can disconnect all components



Inspection After Use

• Before storing lifting bag system components it is necessary to visually inspect all parts for any damage

• Immediately remove any damaged components from service and notify your Holmatro dealer.



Maintenance and Storage Procedures

• Regulator/Pressure Reducer: Should be stored where it will not sustain damage. Before storage return your regulator to neutral (zero) setting

• Control Unit: Store in a container to prevent any damage

• Hoses: wind in a coil, belted or tied with couplers joined. Do not place heavy objects on top of stored hoses.




• Lifting Bags:– The air inlet nipple is the most vulnerable part

of the bag. Always replace the plastic cap and store in such a way as to avoid damage to the nipple.

– If damaged, nipple can be field replaced– Store bags out of direct contact with sunlight

as the UV rays can cause degradation of the rubber compound




• Lifting Bags (cont’d):– Cleaning. After use in oil, sand, dirt bags can

be cleaned using only a mild soap and water solution. Clean with a brush or broom, rinse and let dry.

– NEVER use solvents to clean bags– NEVER use preservatives such as Armorall®

or tire spray as they may cause damage and will create slippery and unstable surfaces.



TrainingRemember: Training is an

on-going process, not a one time event



Training

• Ensure that you periodically review this training program and the Owner’s Manual that you received with your Holmatro Lifting Bag System

• Ensure that all new personnel are familiar with this information before using a lifting bag system



Knowledge Retention Test

• Number a blank sheet of paper from 1-25• Take the following test• Score your answers using the answer key

(4 points each)• You must have a minimum score of 85%

to “pass”• Review your incorrect responses!!




1. What is the maximum operating pressure of your Holmatro Lifting Bag System?

a) 10,500 psi

b) 8 psi

c) 116 psi

d) 116 bar




2. You have a system with 2 model HLB-20 lifting bags. What is the maximum lift capacity available to you using these two lifting bags?

a) 20 tons

b) 40 tons

c) 20 tons x 116 psi

d) 30 tons




3. To calculate the lifting capability of a bag you multiply the contact area of the lifting bag x the surface area of the object to be lifted.

a) True

b) False




4. P x A = F is also known as:a) Bernoulli's Principal

b) Pascal’s Principal

c) The PAF Principal

d) The Theory of Relativity




5. If I stack a 20 ton lifting bag on top of a 40 ton lifting bag, I will be able to lift:

a) 20 tons

b) 60 tons

c) 40 tons

d) 30.1625 tons




6. If I place a 20 ton lifting bag adjacent to a 40 ton lifting bag under an object the maximum I will be able to lift is:

a) 20 tons

b) 60 tons

c) 40 tons

d) 30.1625 tons




7. When stacking lifting bags the maximum number of bags I can stack is:

a) 1

b) 2

c) 3

d) Whatever number of bags I have available




8. When stacking lifting bags the largest bag goes on top.

a) True

b) False




9. As a lifting bag inflates the lifting capacity of the bag actually:

a) Decreases

b) Increases

c) Stays the same

d) Reaches 116psi




10. The contact area between the bag and the object being lifted is what gives the actual lifting capacity.

a) True

b) False




11. For most passenger vehicles, we are not so much interested in lifting capacity as:

a) Surface area

b) Contact area

c) Lifting height

d) Shape of lifting bag




12. To obtain maximum lifting height I can stack two bags one on top of the other:

a) True

b) False




13. When placing lifting bags beneath an object to be lifted:

a) Avoid placing yourself under the object

b) Center the load on the lifting bag

c) Have cribbing available

d) All of the above




14. To place a lifting bag beneath an object I must have at least:

a) A crowbar

b) A 2” opening

c) A 1” opening

d) None of the above




15. The most important thing in any rescue is:

a) Rushing

b) Safety of the patient and rescuers

c) Finishing





16. The more I inflate a lifting bag, the smaller the contact area becomes.

a) False

b) True

c) Only above sea level





17. When inflating a lifting bag I should place myself directly in line with the bag to have a better view of the lifting operation.

a) False

b) True




18. Proper lifting of a load means:a) Crib the load as you lift

b) Never place a load on a lifted object

c) Use no more than 116 psi.

d) All of the above




19. To lower a load you should just simply remove the air supply hose from the lifting bag inlet nipple.

a) True

b) False

c) Only if the ambient temperature is < 85° F

d) Only if the ambient temperature is between -22° F and 131°F




20. After using your lifting bag system you should:

a) Visually inspect all components

b) Store in a protected location

c) Remove any broken or damaged items from service

d) All of the above




21. You were required to perform a lifting operation in a muddy environment. What should you do before storing your system:

a) Clean system using a strong solvent

b) Nothing, system cannot be cleaned by end user

c) Call your Holmatro Dealer for service





22. Upon visual inspection it is noticed that an inlet nipple on a lifting bag was damaged. This means that the bag has to be replaced.

a) True

b) False




23. You need to lift an object with a sharp edge in the contact area. To protect the bag you should place what on top?

a) A thick steel plate

b) Nothing, never place anything on top of a lifting bag

c) Soft, sacrificial protection

d) A truck mud flap

e) None of the above

f) C and D above




24. When lifting using two stacked bags:a) Inflate both bags simultaneously

b) Inflate the bottom bag first

c) Inflate the top bag first

d) You cannot lift using two stacked bags




25. The object you need to lift is higher than the maximum lift height of your 2 lifting bags. What can you do:

a) Nothingb) Build a box crib platform on top of your two

lifting bags to fill the gapc) Build a box crib platform beneath your two

lifting bags to fill the gap d) Stack cribbing between your two lifting bags

to fill the gap



Answer Key

1. C2. A3. B4. B5. A6. B7. B8. B9. A10. A11. C12. A13. D

14. C15. B16. B17. A18. D19. B20. D21. D22. B23. F24. B25. C



Thank You!

Holmatro, Inc.

Number One In The World For a Reason ® ® Holmatro Holmatro HLB Lifting Bag Systems What the...

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Transcript of Number One In The World For a Reason ® ® Holmatro Holmatro HLB Lifting Bag Systems What the...