Transcript ONLINE SELF-STUDY - Environment, Health and Safety

ONLINE SELF-STUDY
Boomlift Non-Practical
Type: Scissor/Vertical
A scissor/vertical lift has a platform that
CANNOT be positioned completely
beyond the base and is used to position
personnel, necessary tools, and materials
at elevated work locations. Scissor/vertical
aerial work platforms are power operated
(motorized) with primary functions
controlled from the platform.
Type: Boom Supported
A boom supported aerial work
platform has a platform that can be
positioned completely beyond the
base and is used to position
personnel, necessary tools and
materials at elevated work locations.
Boom supported aerial work
platforms are power operated
(motorized) with primary functions
controlled from the platform.
Examples: Boomlifts, Aerial lift, Manlifts, Aerial Platforms, Articulated
Booms, and Cherry Picker.
Type: Straight Mast Booms
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Seventy-five percent of all boomlifts are
of the straight mast boomlift type, with a
normal load capacity of 500 lbs to 1000
lbs. These lifts can be powered by
gasoline, propane, gas/propane, or
diesel engines. There are primarily used
for: painting, rough-in construction,
electrical installations, piping installations,
sand blasting operations, building
maintenance, and any other applications
where workers and their tools need to get
up in the air to perform their work. It is
also referred to as telescopic boomlifts.
Type: Articulated Boomlift
Articulated boomlifts provide the ease to get "up
and over" obstacles so as to place personnel and
their tools at specific work locations. The load
capacities range from 300 lbs to 1000 lbs
(UNC's articulated boomlift ranges from 500 lbs
to 1000 lbs). Standard platform widths range
from 4', 5', or 6' (University's is 8'). It can be
powered by gas, gas/propane, diesel, or electric
DC motors. Primary use involves industrial
equipment maintenance, construction applications,
warehousing and inventory storage, cleaning, etc.
Employer’s Responsibilities
The employer is required to:
 provide every employee with training;
 maintain the boomlift in a safe operating condition;
 purchase boomlifts that conform to ANSI and CSA
standards.
Boomlift Operator’s Responsibilities
The boomlift operator is:
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Directly responsible for the safe operation of the lift
at all times.
 Required to complete a pre-shift inspection of the lift
and immediately report any problems.
 To ensure all personnel on the platform are wearing
safety gear, as required, at all times.
 Required to complete a workplace inspection prior to
lift operation in order to check the work area for
possible hazards and immediately report any problems.
Required Features
Each Boomlift is required to have the following features:
 Upper and lower controls
 Platform that includes guard rail w/toeboard
 A load capacity plate
 Passive (automatic) brake which will hold the unit on any
slope it is capable of climbing
 An operator's manual
 Emergency stop devices, located at the upper and
lower control stations, which stop all powered functions
that affect platform movement
Parts Overview
It is imperative to know the correct parts of a
boomlift. This is very crucial when reporting
problems.
Steering Wheels and Axle
The steering control for the
boomlift is located at the upper
controls. Always make certain
you re-orient your platform
position relative to the base.
This means the steer and drive
functions will operate in reverse
when the unit's platform is not
extended over the drive
wheels.
Tires
There are three possible types of tires for the boomlift.
 Pneumatic – tires filled with compressed air
 Liquid Filled – tires filled with some kind of liquid compound
instead of air
 Monofilled – tires which are filled with a liquid compound
that solidifies into a solid over time, usually from one to
three days. The tires will not go flat, they are much heavier
than air filled tires and add to the counter weight system of
the boomlift.
If the tires have to be replaced, it must match the original in
type, tread design, and filling. Any variation could cause
loss of traction or loss of counterbalance which could result
in loss of control of the boomlift.
Counterweight System
The counterweight system includes the counterweight itself, the
turntable assembly (which includes all parts for the motor),
the structural components (which make up the base frame),
plus the tires and wheels.
The center of gravity of the counterweight system is utilized to
counterbalance the center of gravity created by the load of
the elevating assembly and platform assembly plus the
workmen, their tools and equipment.
Simply put, the purpose of the counterweight assembly is to
keep the boomlift in the upright position when the unit is
operated according to the manufacturer's instructions.
Remember: all aerial work platforms are generally intended
to be used on a flat level surface!
Lower (Emergency) Controls
The lower (emergency) controls must be accessible from the ground
level. It is located on or near the base frame of the unit.
Review the operator's manual to identify the exact location. All of
these controls will be of the type that automatically returns to the
"off" or "neutral" position when released if they are used to control
any movement of the lift. IMPORTANT NOTE: Lower controls can
override the upper controls.
The Lower controls should only be used during the following conditions:
 During pre-shift checkout of functions from the lower controls.
 To override the upper controls to gain access in the event of an emergency. (upper
controls will not work)
 Only after you have been given permission to operate a function by the operator.
 To override the upper controls to gain access in the event of an emergency. (upper
controls will not work)
 By a qualified mechanic during the process of performing necessary repairs
and/or maintenance on the boomlift.
Platform Overview
The platform section on the boomlift is equipped with
many safety features such as guardrails (which will
be covered under the fall protection section). Let's
go over a few details concerning the platform.
Platform Section
The upper control station is located on the platform
section. It is where all of the functional controls for
the boomlift can be activated. During practical
training, the controls will be reviewed in detail.
Platform Section, Con’t.
On the platform section is a deadman safety control
footswitch. In order to activate any of the boomlift
upper controls, the deadman safety control
footswitch must be continually activated before the
upper controls will function.
Platform Section, Con’t.
Always consult the load chart indicators prior to your
loading the platform to make sure you are
operating the boomlift within its safe operating
limits.
Platform Section, Con’t.
Whenever a worker is on the
platform section, he/she is to
remain on the inside of the
platform with their feet
firmly planted as per
manufacturer's instructions.
Identify the Boomlift Parts
It is very important to know the correct part names of
a boomlift. Click on the numbers to check your
answers.
Operating Procedures Overview
The following sections are important to understand
before operating a boomlift.
 Center of Gravity
 Fulcrum Point
 Rated Work Load, or Load Capacity Rating
 Center of Gravity
 Sideslope & Grade
We will review each item in more detail.
Center of Gravity
The center of gravity of an object is the point about which
all forces of gravity are equal. As the boomlift is
operated, the center of gravity on a boomlift changes
position. Changes occur when the platform is moved in
or out, up or down, forwards or backwards, and
rotating left or right. Any inclined (sloping or graded)
surface also affects the combined center of gravity.
Fulcrum Point
The Boomlift works on the simple
principle of loads balanced
over a set of two wheels, the
fulcrum. Depending on which
set of tires the operator
platform is set over, they
become the fulcrum. The
fulcrum point changes as the
platform is elevating and
swinging into position.
Fulcrum Point on Articulated Booms
As you raise, lower, extend, swing, or
activate any boom function the fulcrum
point, as well as the center of gravity
changes as the platform changes its
position. Sometimes this change is little
and sometimes the change is a lot. The
important issue for you to understand
and always keep in mind as you operate
the boomlift, is that all of the interrelated boomlift forces are always
changing.
Fulcrum Point Example
Another example of the change in fulcrum point.
Rated Work Load or Load Capacity
Rating
LOAD CAPACITY – is a specific load carried at a specific distance
from the fulcrum wheels and spread evenly over the operator
platform.
UNRESTRICTED LOAD CAPACITY – is the maximum allowable
weight load allowed in and spread evenly, over the operator
platform.
Maximum allowable weight load includes personnel, their tools and
their materials.
As long as you are (1) within the unrestricted load capacity limits, (2)
are operating on level ground that will support the units weight and
(3) you employ any necessary safety devices you can operate the
lift at any height safely.
Unrestricted rated work load capacity decals will always be located at
each entrance into the platform and at the operator control stations.
You should always verify these decals are in place during your preshift inspection.
Multiple Ratings
Some boomlifts have multiple ratings. On the PLATFORM
ELEVATING ASSEMBLY, the multiple rating chart will
show the alternative configurations of elevating
assembly retracted versus extended; and elevated
versus lowered.
ALTERNATIVE RATED WORK LOADS: when the rated
work load of the varying configuration depends on the
location of the platform in relation to the base, the
manufacturer shall display the appropriate related
work load of the configuration of the operator at the
control station.
Sideslope and Grade
Boomlifts are generally intended to be used on a flat level surface. The Owner's
Manual will tell you the limits which will affect the operation of your unit.
Driving on a 15% grade to get to the worksite is acceptable but the boomlift should be
operated on a flat level surface. When traveling over a long distance it is
advisable to lock the turntable (if the boomlift is equipped with one, the University's
is not equipped with this device), keep the boom mast retracted and keep the
operator platform at or below the horizontal position with the ground. Do not drive
the boomlift on grades or sideslopes exceeding those specified on caution placards
or indicated in the Operator's Manual.
Safe Operating Practices Overview
The operation of any boomlift is subject to certain
hazards that can only be protected against by the
intelligence, care, and common sense of the
operator.
Overhead Hazards
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ASSUME all electrical parts and wiring are
ENGERGIZED unless known otherwise.
Avoid contact with 0 to 300V
Over 300V to 50KV the Minimum Safe Approach
Distance is 10 feet. The distance increases as the
voltage increases.
Trees
Voltage Chart
VOLTAGE RANGE
MINIMUM SAFE APPROACH DISTANCE
(Phase to Phase)
(Feet)
0 to 300V
(Meters)
AVOID CONTACT
Over 300V to 50KV
10
3.05
Over 50KV to 200KV
15
4.60
Over 200KV to 350KV
20
6.10
Over 350KV to 500KV
25
7.62
Over 500KV to 750KV
35
10.67
Operating Practices Dos
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Do limit travel speed according to conditions of ground surface, congestion of the
worksite, visibility, slope, grade, location of personnel, or any other factors causing
hazards of collision or injury to personnel.
Do maintain a clear view of the path of travel when elevated.
Do maintain a safe distance from overhead obstacles when elevated.
Do maintain a safe distance from obstacles, debris, drop-offs, holes, depressions, ramps,
and other possible hazards when elevated.
Do shutdown and cease operation of the lift in the case of any suspected malfunction(s) of
the unit, or of any potentially hazardous conditions(s), or hazardous (environment)
location(s) which may be encountered. Report the potential problem(s) to the appropriate
people and make sure any problem(s) have been corrected before proceeding.
Do ensure the outriggers, stabilizers, extendible axles, or other stability enhancing safety
devices are used as required by the manufacturer of the lift.
Do make sure all personnel maintain a firm footing on the platform floor while working
from the platform and wear appropriate PPE.
Do use special precautions when other equipment and/or vehicles are present. Warnings
such as, but not limited to, flags, roped-off areas, flashing lights, and barricades shall be
used.
Do take care to prevent rope, electric cords and hoses from becoming entangled in the
boomlift.
Do cease operations if the platform or elevating assembly becomes caught, snagged or
otherwise prevented from normal motion by an adjacent structure or other obstacles such
that control reversal does not free the platform. All personnel shall be removed from the
platform before attempts are made to free the platform using ground controls.
Operating Practices Don’ts
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Don't stunt drive or horseplay.
Don't use planks, ladders or any other device on the
boomlift platform to achieve any additional height or reach.
Don't alter or disable any interlock or other safety device.
Don't position the boomlift against another object to
"steady" the platform. Don't use the boomlift as a crane.
Don't operate the boomlift from a position on trucks, trailers,
railway cars, floating vessels, scaffold, or similar equipment
unless the application is approved in writing by the
manufacturer.
Don't alter or modify the boomlift unless you have written
permission to do so by the manufacturer.
Remember When Refueling
Here are a few things to remember when refueling the
boomlift:
 Never fill the fuel tank of a lift with the engine running.
 Never smoke or have the lift near an open flame when
filling the fuel tank.
 Be sure to use the correct type and grade of fuel.
 Never mistakenly put fuel into the hydraulic tank.
 Ground the fuel funnel or nozzle against the filler neck
to prevent sparks.
 Be sure to replace the fuel tank cap.
Fall Protection: When and Why
Fall protection is required due to the potential for
being bounced out of lift or from climbing out of the
basket. A harness is required to be worn when on
the platform you must be and be tied off at all
times. Remember to inspect the harness prior to use!
Tie-Off Points on Platform
Safety lanyard tie-off ring is usually located in the
area close to the operator control station. There are
3 on the University's lift.
Guardrails on the Platform Section
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Guardrails are another type of fall
protection. Guardrails are not to be used
as a ladder, by standing on them in order
to gain greater height.
The purpose of the toeboards is to keep
loose debris, tools or materials from falling
off of the platform to the ground.
It is the operator's responsibility to make
sure all personnel in the platform are
wearing fall protection devices and that
their lanyards are securely fastened to the
tie-off ring.
OSHA-Required Inspection
OSHA requires that boomlifts be inspected.
 Boomlift Pre-Shift Inspection Report
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At the start up
When the boomlift is out of your sight
Workplace Pre-Shift Inspection Report
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Before you move the boomlift into the area
At the start of work
Anytime you are away from the lift
Copies must be kept on file
 New sheet for each time checked
These reports will be gone over in detail during the Practical
Training portion.
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Instructional Portion Conclusion
You have just completed the instructional portion of the
boomlift training. In order to receive credit, you must
complete the post test.
For the practical portion of this course, please contact
Mike Proctor at 962-5083 to schedule your training.
Once both portions of the boomlift training are
completed, EHS will mail you an operators' license. If
you have any questions regarding this training or any
safety and health issue, please contact EHS at (919)
962-5507. In order to receive credit for this training,
you much complete the post test.