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Industry
Wide Labor-Management Safety Committee
Safety Bulletin
#22
Guidelines for the Use of Elevating Work Platforms (Scissor Lifts)
and Aerial Extensible Boom Platforms
- These guidelines are
applicable to vertically operated elevated work platforms or "Scissors
Lifts" and boom mounted, telescoping and rotating, elevating
work platforms, such as "Condors".
- Only persons trained
in the safe use of these work platforms are authorized to operate
these devices. Certification of the employee may be fulfilled by
the qualified Safety Director of the Employer or by the Industry-Wide
Training program, sponsored by the Contract Services Administration
Trust Fund (CSATF). CSATF will issue employees a certificate upon
satisfactory completion of authorized training. Persons, in classifications
for which there is an Industry Experience Roster, will be skill
identified on the Roster.
- Equipment shall be
inspected prior to operation for satisfactory condition, damage
and defects. This shall include all operational controls, which
shall be in proper functioning condition.
- Operators shall report
all discrepancies to their supervisors.
- Operators shall consider
the job to be performed and shall evaluate the job site location
for potential hazards. This equipment shall not be operated within
10 feet of an energized, high voltage source unless danger from
accidental contact with that source has been effectively guarded
against. The operation of aerial devices/work platforms OVER energized,
high-voltage sources of any sort is prohibited at all times.
- Appropriate measure
should be taken to ensure that the job site's surface is stable
and will support the equipment and that there are no hazardous irregularities
or accumulation of debris which might cause a moving platform to
overturn. Survey the route to be traveled, checking for overhead
obstructions; traffic; holes in the pavement, ground, or shoulder;
ditches, slope of road, etc. Operation of these devices on inclined
surfaces shall NOT exceed manufacturers' ratings. Wheel chocks shall
be used on inclined surfaces.
- Approved safety belts,
with lanyard or safety strap, shall be worn when using these work
platforms:
- The safety strap
or lanyard shall be securely attached to the boom, basket, tub
or platform.
- The safety strap
or lanyard shall be attached in a manner that prevents a free-fall
of more than 4 feet.
- Belting-off to an
adjacent pole, structure or equipment while working from the basket,
tub or platform is NOT PERMITTED.
- Objects or production
equipment with the potential of falling from an aerial basket/platform
shall be secured with an adequate safety lanyard.
- The basket, tub or
platform shall NOT be loaded beyond its rated capacity.
- Ladders, planks or
other objects shall NOT be placed in, or on top of the platform
or guard rail to gain greater height. Employees shall NOT sit or
climb on the edge of the basket/platform.
- "Climbers"
(pole climbing equipment) shall NOT be worn while performing work
from an aerial device. The risk of falling while climbing in or
out of the basket is too great.
- Workers shall NOT work
from aerial work platforms when:
- exposed to extreme
weather conditions (thunderstorms, heavy rain, extreme heat or
cold) unless provisions have been made to ensure protection and
safety of the workers.
- winds exceed 25 miles
per hour.
- Aerial baskets, tubs
or platforms shall NOT be supported by, or attached to, any adjacent
structures.
- Where moving vehicles
or pedestrian traffic is present, the work area around the aerial
equipment shall be marked by flags, signs, traffic cones or other
means of traffic control.
- The braking system
shall be set when elevating employees and when wheel chocks are
used. Never leave this equipment unattended if you have stopped
it on a ramp, grade or incline until you have chocked at least one
tire.
NOTE: These vehicles
will creep if not on a level which can be set to prevent creeping.
Avoid stopping on a grade if possible.
- Outriggers must be
on solid footing and shall be equipped with hydraulic holding valves
or mechanical locks at the outriggers.
- Operate all controls
slowly to ensure smooth platform movement.
- Do NOT use an aerial
device as a welding ground. Do NOT weld on an aerial device without
first disconnecting both positive and negative battery terminals.
Refer to manufacturer's equipment manual.
- Do NOT attempt to raise
platform/basket beyond its rated maximum height or reach.
- "TOWERING"
(traveling with a worker in the basket) is NOT permitted.
- Aerial platforms when
in operation shall be solely under the control of the operator in
the basket. At no time shall the equipment be moved, lowered, or
otherwise controlled from the secondary (ground control) panel unless
the operator in the basket makes a request that it be done, or the
operator is ill or otherwise incapacitated. Switching controls and
moving the equipment in any manner without the consent of the operator
while the operator is in the basket is prohibited.
- Boom-mounted telescoping
and rotating aerial platforms shall NOT be used as a crane (objects
slung below the basket).
- When moving scissor
lift-type platforms, operators shall first position themselves on
board the platform, then conduct all moving operations from that
position.
- When moving this equipment
forward, do not engage the REVERSE switch until the vehicle has
come to a complete stop. Use the REVERSE only as an emergency measure
should the equipment continue to crawl after releasing the stop
switch. Use the FORWARD only as an emergency measure should the
equipment continue to crawl after releasing the stop switch.
CAUTION: Do not use either
of these emergency measures if doing so will endanger anyone in the
vicinity.
These are only guidelines.
Refer to the Manufacturer's operating manual on each type of equipment,
due to operational differences in various equipment and manufacturers.
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