Holmatro HLB Lifting Bag Systems

Report
Holmatro HLB Lifting Bag
Systems
What the Rescuer Needs to Know
Before Operating The System
©2004 Holmatro, Inc.
Holmatro
®
Number One In The World For a Reason
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.
Holmatro
®
Number One In The World For a Reason
Personal Responsibility Code
The member companies of FEMSA that provide
emergency response equipment and services want
responders to know and understand the following:
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.
Holmatro
®
Number One In The World For a Reason
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.
Holmatro
®
Number One In The World For a Reason
Program Outline
• How Do Lifting Bags Work?
• Lifting Bag Characteristics & Specifications
–
–
–
–
Construction
Chemical Resistance
Temperature Range
Warranty
• Product Range
– Lifting Bags
– Accessories
Holmatro
®
Number One In The World For a Reason
Program Outline
• Operation of Lifting Bags
– Connection
– Disconnection
• Proper Lifting Techniques
• Post-use Inspection
• Care and Storage
• Training
• Knowledge Retention Test
Holmatro
®
Number One In The World For a Reason
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
Holmatro
®
Number One In The World For a Reason
Pascal’s Principle:
P x A=F
Pressure times Area
Equals Force
Holmatro
®
Number One In The World For a Reason
Operating Pressure
• Our system
operates at a
maximum of
116 psi/8 bar
• This
represents
the “P” in the
equation
Holmatro
®
Number One In The World For a Reason
Surface Area
20.125 inches
• 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
Holmatro
®
Number One In The World For a Reason
Let’s Plug In The Numbers…
P x A=F
116 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
Holmatro
®
Number One In The World For a Reason
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!
Holmatro
®
Number One In The World For a Reason
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
Holmatro
®
Number One In The World For a Reason
Like this…
• Once we take into
account the loss
of area for the
edges
• We can see the
actual useable
area of the bag
Holmatro
®
Number One In The World For a Reason
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
Holmatro
®
Number One In The World For a Reason
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…
Holmatro
®
Number One In The World For a Reason
Inflation Characteristics
• This gives us lift height and at the same
time…
• Reduces the surface area in contact with
the object being lifted
Holmatro
®
Number One In The World For a Reason
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!
Holmatro
®
Number One In The World For a Reason
Contact Area
Is the total area (in²) of the bag
that comes in contact with the
object to be lifted.
Holmatro
®
Number One In The World For a Reason
View from the Top
Contact
Area:
381.81in²
x 116psi
=44,290 lbs
0.0”
Object being lifted
Holmatro
®
Number One In The World For a Reason
View from the Top
Contact Area:
133.8in²
x 116psi
=15,925 lbs
4.75”
Object being lifted
Holmatro
®
Number One In The World For a Reason
View from the Top
Contact
Area:
84.9in²
x 116psi
=9856 lbs
6.25”
Object being lifted
Holmatro
®
Number One In The World For a Reason
View from the Top
Contact
Area:
26.27in²
x 116psi
=3,047.3 lbs
8.75”
Object being lifted
Holmatro
®
Number One In The World For a Reason
Let’s Graph Our Example…
Lift Capacity Vs. Lift Height - HLB20
50,000
44,290
40,000
Lift Capacity 30,000
(lbs)
20,000
15,925
10,000
9,856
3,047
0
0
4.75
6.25
Lift Height (in.)
Holmatro
®
Number One In The World For a Reason
8.75
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!
Holmatro
®
Number One In The World For a Reason
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
PxA=F
Holmatro
®
Number One In The World For a Reason
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”
Holmatro
®
Number One In The World For a Reason
Lifting Bag Characteristics
Construction
Holmatro
®
Number One In The World For a Reason
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 prestressed before being
incorporated in the
construction of the bag.
Cross section
Holmatro
®
Number One In The World For a Reason
Construction
• For durability, the
female fitting on
the bag is
vulcanized in
place
• The male
connector is
easily field
replaceable
Holmatro
®
Number One In The World For a Reason
Construction
• All labels are
vulcanized into
the bag
• Serial number
and production
code is
stamped into
each bag
Holmatro
®
Number One In The World For a Reason
Icon Based Labels
• Product labels are
icon-based for
international use
Holmatro
®
Number One In The World For a Reason
Icon Based Labels
• 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
Holmatro
®
Never place hard sharps
protection on top of bag!!
Only use soft protection which
can be sacrificed, such as a
truck mud flap, etc.
Number One In The World For a Reason
Icon Based Labels
Model number
Part number
Maximum lift
height
Air volume
Holmatro
®
Number One In The World For a Reason
Maximum lift
capacity
Icon Based Labels
• Wear proper eye
protection
• Never place cribbing
between the bag and
the load
• Wear safety shoes
• Wear proper
protective gloves
• Wear proper
protective clothing
Holmatro
®
Number One In The World For a Reason
Construction
• Hi visibility
centering mark
is vulcanized
onto both
sides of the
bag to make
proper
placement
easy
Holmatro
®
Number One In The World For a Reason
Construction
• Largest bags
(HLB-40 &
HLB-67) have
removable
handles at
each corner to
make
placement and
carrying easier
Holmatro
®
Number One In The World For a Reason
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
Holmatro
®
Number One In The World For a Reason
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.
Holmatro
®
Number One In The World For a Reason
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)
Holmatro
®
to
131°F (55°C)
Number One In The World For a Reason
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.”
Holmatro
®
Number One In The World For a Reason
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
Holmatro
®
Number One In The World For a Reason
Accessories
• Lifting Bag systems are available with a
variety of accessory kits to meet your
needs…
Holmatro
®
Number One In The World For a Reason
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
Holmatro
®
Number One In The World For a Reason
Pressure Regulators
Features
• 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
Holmatro
®
Shown: HPRV120
Number One In The World For a Reason
Pressure Regulators
Connection 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
Holmatro
®
Number One In The World For a Reason
Control Units
• 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
Holmatro
®
Input from regulator
Features
Number One In The World For a Reason
Output to bags
Control Units
Operation
• 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
Holmatro
®
Number One In The World For a Reason
Model DCV10
Control Units
Operation
• 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
Holmatro
®
Number One In The World For a Reason
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.
Holmatro
®
Number One In The World For a Reason
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
Holmatro
®
Number One In The World For a Reason
Operation of Lifting Bags
• Connection of the system should be
accomplished quickly.
• Practice proper connection sequence to
become familiar with all components
Holmatro
®
Number One In The World For a Reason
Connection Sequence
When used with compressed air bottle
1.
Connect the air hose between the bag and the control unit
•
2.
3.
4.
5.
6.
Connect shut off hoses now if needed during lift operation
Connect the pressure regulator to the air bottle.
Connect the air hose from the pressure regulator to the control
unit.
Open the compressed air bottle. The high pressure gauge, which
is the gauge closest to the bottle, indicates the pressure in the
bottle.
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.
Place the lifting bag under the object to be lifted. The system is
now ready for use.
Holmatro
®
Number One In The World For a Reason
1. Connect the air hose between the bag
and the control unit
Holmatro
®
Number One In The World For a Reason
2. Connect the pressure regulator to the air
bottle.
Holmatro
®
Number One In The World For a Reason
3. Connect the air hose from the pressure
regulator to the control unit.
Holmatro
®
Number One In The World For a Reason
4. Open the compressed air bottle. The high
pressure gauge, which is the gauge closest to
the bottle, indicates the pressure in the bottle.
Holmatro
®
Number One In The World For a Reason
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.
Holmatro
®
Number One In The World For a Reason
6. Place the lifting bag under the object to be
lifted. The system is now ready for use.
Holmatro
®
Number One In The World For a Reason
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.
Holmatro
®
Number One In The World For a Reason
Lifting Operations
•
•
•
•
•
•
SAFETY Considerations
Placement of lifting bags
Adjusting height of lifting bags
Stacking lifting bags
Inflation sequence
Lowering the load
Holmatro
®
Number One In The World For a Reason
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
Holmatro
®
Number One In The World For a Reason
Safety
Operator Position
•
•
Maintain a safe distance during lift
If space permits, position yourself to the
side of possible ejection path of lifting
bags
Holmatro
®
Number One In The World For a Reason
Safety
Improper Operator Position
• This operator
should be to
the side of
the possible
ejection path
of the lifting
bags
Holmatro
®
Number One In The World For a Reason
Safety
Improper Placement
• These bags
have not been
centered under
the rocker
channel
• This will lead to
bags shifting
position during
inflation…
Holmatro
®
Number One In The World For a Reason
Safety
Shifting Bags
• These bags have
shifted
position…notice the
angle
• They represent a
potential ejection
hazard
Holmatro
®
Number One In The World For a Reason
Safety
Proper Operator Position
Holmatro
®
Number One In The World For a Reason
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
Holmatro
®
Number One In The World For a Reason
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…
Holmatro
®
Number One In The World For a Reason
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
Holmatro
®
Number One In The World For a Reason
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
Holmatro
®
Number One In The World For a Reason
Stacking Bags
Two Bag Lift
• When space
permits and
maximum lift
height is desired,
place both bags
beneath load.
Holmatro
®
Number One In The World For a Reason
Stacking Bags
Two Bag Lift
• Inflate the
bottom bag
FIRST
Holmatro
®
Number One In The World For a Reason
Stacking Bags
Two Bag Lift
• Complete the lift
by inflating the
top bag
• Place cribbing to
secure lifted
object
Holmatro
®
Number One In The World For a Reason
Inflation Sequence
With lifting bag system correctly connected and bags properly placed you can
now begin the lift
1.
2.
3.
4.
5.
Using the controller, begin slowly
inflating the bottom bag
Place cribbing as the load begins
to rise
Once an adequate height is
reached secure the load with
cribbing.
Leave the bag inflated. If using
shutoff hose, close quarter turn
valve.
Air supply hose may now be
disconnected from lifting bag
Holmatro
®
Number One In The World For a Reason
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
Holmatro
®
Number One In The World For a Reason
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
Holmatro
®
Number One In The World For a Reason
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.
Holmatro
®
Number One In The World For a Reason
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.
Holmatro
®
Number One In The World For a Reason
Maintenance and Storage Procedures
• 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
Holmatro
®
Number One In The World For a Reason
Maintenance and Storage Procedures
• 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.
Holmatro
®
Number One In The World For a Reason
Training
Remember: Training is an
on-going process, not a one
time event
Holmatro
®
Number One In The World For a Reason
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
Holmatro
®
Number One In The World For a Reason
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!!
Holmatro
®
Number One In The World For a Reason
Knowledge Retention Test
1. What is the maximum operating pressure
of your Holmatro Lifting Bag System?
a)
b)
c)
d)
10,500 psi
8 psi
116 psi
116 bar
Holmatro
®
Number One In The World For a Reason
Knowledge Retention Test
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)
b)
c)
d)
20 tons
40 tons
20 tons x 116 psi
30 tons
Holmatro
®
Number One In The World For a Reason
Knowledge Retention Test
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
Holmatro
®
Number One In The World For a Reason
Knowledge Retention Test
4. P x A = F is also known as:
a)
b)
c)
d)
Bernoulli's Principal
Pascal’s Principal
The PAF Principal
The Theory of Relativity
Holmatro
®
Number One In The World For a Reason
Knowledge Retention Test
5. If I stack a 20 ton lifting bag on top of a 40
ton lifting bag, I will be able to lift:
a)
b)
c)
d)
20 tons
60 tons
40 tons
30.1625 tons
Holmatro
®
Number One In The World For a Reason
Knowledge Retention Test
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)
b)
c)
d)
20 tons
60 tons
40 tons
30.1625 tons
Holmatro
®
Number One In The World For a Reason
Knowledge Retention Test
7. When stacking lifting bags the maximum
number of bags I can stack is:
a)
b)
c)
d)
1
2
3
Whatever number of bags I have available
Holmatro
®
Number One In The World For a Reason
Knowledge Retention Test
8. When stacking lifting bags the largest bag
goes on top.
a) True
b) False
Holmatro
®
Number One In The World For a Reason
Knowledge Retention Test
9. As a lifting bag inflates the lifting capacity
of the bag actually:
a)
b)
c)
d)
Decreases
Increases
Stays the same
Reaches 116psi
Holmatro
®
Number One In The World For a Reason
Knowledge Retention Test
10. The contact area between the bag and
the object being lifted is what gives the
actual lifting capacity.
a) True
b) False
Holmatro
®
Number One In The World For a Reason
Knowledge Retention Test
11. For most passenger vehicles, we are not
so much interested in lifting capacity as:
a)
b)
c)
d)
Surface area
Contact area
Lifting height
Shape of lifting bag
Holmatro
®
Number One In The World For a Reason
Knowledge Retention Test
12. To obtain maximum lifting height I can
stack two bags one on top of the other:
a) True
b) False
Holmatro
®
Number One In The World For a Reason
Knowledge Retention Test
13. When placing lifting bags beneath an
object to be lifted:
a)
b)
c)
d)
Avoid placing yourself under the object
Center the load on the lifting bag
Have cribbing available
All of the above
Holmatro
®
Number One In The World For a Reason
Knowledge Retention Test
14. To place a lifting bag beneath an object I
must have at least:
a)
b)
c)
d)
A crowbar
A 2” opening
A 1” opening
None of the above
Holmatro
®
Number One In The World For a Reason
Knowledge Retention Test
15. The most important thing in any rescue
is:
a)
b)
c)
d)
Rushing
Safety of the patient and rescuers
Finishing
None of the above
Holmatro
®
Number One In The World For a Reason
Knowledge Retention Test
16. The more I inflate a lifting bag, the
smaller the contact area becomes.
a)
b)
c)
d)
False
True
Only above sea level
None of the above
Holmatro
®
Number One In The World For a Reason
Knowledge Retention Test
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
Holmatro
®
Number One In The World For a Reason
Knowledge Retention Test
18. Proper lifting of a load means:
a)
b)
c)
d)
Crib the load as you lift
Never place a load on a lifted object
Use no more than 116 psi.
All of the above
Holmatro
®
Number One In The World For a Reason
Knowledge Retention Test
19. To lower a load you should just simply
remove the air supply hose from the
lifting bag inlet nipple.
a)
b)
c)
d)
True
False
Only if the ambient temperature is < 85° F
Only if the ambient temperature is between
-22° F and 131°F
Holmatro
®
Number One In The World For a Reason
Knowledge Retention Test
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
Holmatro
®
Number One In The World For a Reason
Knowledge Retention Test
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
d) None of the above
Holmatro
®
Number One In The World For a Reason
Knowledge Retention Test
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
Holmatro
®
Number One In The World For a Reason
Knowledge Retention Test
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)
b)
c)
d)
e)
f)
A thick steel plate
Nothing, never place anything on top of a lifting bag
Soft, sacrificial protection
A truck mud flap
None of the above
C and D above
Holmatro
®
Number One In The World For a Reason
Knowledge Retention Test
24. When lifting using two stacked bags:
a)
b)
c)
d)
Inflate both bags simultaneously
Inflate the bottom bag first
Inflate the top bag first
You cannot lift using two stacked bags
Holmatro
®
Number One In The World For a Reason
Knowledge Retention Test
25. The object you need to lift is higher than
the maximum lift height of your 2 lifting
bags. What can you do:
a) Nothing
b) Build a box crib platform on top of your two
lifting bags to fill the gap
c) 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
Holmatro
®
Number One In The World For a Reason
Answer Key
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
C
A
B
B
A
B
B
B
A
A
C
A
D
Holmatro
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
®
C
B
B
A
D
B
D
D
B
F
B
C
Number One In The World For a Reason
Thank You!
Holmatro, Inc.
Holmatro
®
Number One In The World For a Reason

similar documents