GROVE
2-11
TMS800E13 OPERATOR MANUAL
SAFETY INFORMATION
2
Published 02-06-2014, Control # 495-00
Boom cages and boom guards afford limited protection from
electrocution hazards. They are designed to cover only the
boom nose and a small portion of the boom. Performance of
boom cages and boom guards is limited by their physical
size, insulating characteristics, and operating environment
(e.g. dust, dirt, moisture, etc.). The insulating characteristics
of these devices can be compromised if not kept clean, free
of contamination, and undamaged.
Proximity sensing and warning devices are available in
different types. Some use boom nose (localized) sensors
and others use full boom length sensors. No warning may be
given for components, cables, loads, and other attachments
located outside of the sensing area. Much reliance is placed
upon you, the operator, in selecting and properly setting the
sensitivity of these devices.
Never rely solely on a device to protect you and your fellow
workers from danger.
Some variables you must know and understand are:
•
Proximity devices are advertised to detect the existence
of electricity and not its quantity or magnitude.
•
Some proximity devices may detect only alternating
current (AC) and not direct current (DC).
•
Some proximity devices detect radio frequency (RF)
energy and others do not.
•
Most proximity devices simply provide a signal (audible,
visual, or both) for the operator; this signal must not be
ignored.
•
Sometimes the sensing portion of the proximity devices
becomes confused by complex or differing arrays of
power lines and power sources.
Do not
depend on grounding. Grounding of a crane affords
little or no protection from electrical hazards. The
effectiveness of grounding is limited by the size of the
conductor (wire) used, the condition of the ground, the
magnitude of the voltage and current present, and numerous
other factors.
Electrical Contact
If the crane should come in contact with an energized power
source, you must:
1.
Stay in the crane cab.
Don’t panic
.
2.
Immediately warn personnel in the vicinity to stay away.
3.
Attempt to move the crane away from the contacted
power source using the crane’s controls which may have
remained functional.
4.
Stay in the crane until the power company has been
contacted and the power source has been de-energized.
No one
must attempt to come close to the crane or load
until the power has been turned off.
Only as a last resort should an operator attempt to leave the
crane upon contacting a power source. If it is absolutely
necessary to leave the operator’s station,
jump completely
clear of the crane. Do not step off.
Hop away with both feet
together.
Do not
walk or run.
Following any contact with an energized electrical source,
the Manitowoc distributor must be immediately advised of
the incident and consulted on necessary inspections and
repairs. Thoroughly inspect the wire rope and all points of
contact on the crane. Should the dealer not be immediately
available, contact Manitowoc Crane Care. The crane must
not be returned to service until it is thoroughly inspected for
any evidence of damage and all damaged parts are repaired
or replaced as authorized by your Manitowoc distributor or
Manitowoc Crane Care.
Special Operating Conditions and
Equipment
Never operate the crane during an electrical thunderstorm.
When operating near transmitter/communication towers
where an electrical charge can be induced into the crane or
load:
•
The transmitter shall be deenergized OR,
•
Tests shall be made to determine if an electrical charge
will be induced into the crane or load.
•
The crane must be provided an electrical ground.
•
If taglines are used, they must be non-conductive.
•
Every precaution must be taken to dissipate induced
voltages. Consult a qualified RF (radio frequency)
Consultant. Also refer to local, state, and federal codes
and regulations.
When operating cranes equipped with electromagnets, you
must take additional precautions. Permit no one to touch the
magnet or load. Alert personnel by sounding a warning
signal when moving a load. Do not allow the cover of the
electromagnet power supply to be open during operation or
at any time the electrical system is activated. Shut down the
crane completely and open the magnet controls switch prior
to connecting or disconnecting magnet leads. Use only a
non-conductive device when positioning a load. Lower the
magnet to the stowing area and shut off power before
leaving the operator’s cab (if equipped) or operator’s station.
PERSONNEL HANDLING
The American Society of Mechanical Engineers issued a
new American National Standard entitled,
Personnel Lifting
Systems,
ASME B30.23-2011:
This Volume establishes the design criteria, equip-
ment characteristics, and operational procedures
that are required when hoisting equipment within
the scope of the ASME B30 Standard is used to lift
personnel. Hoisting equipment defined by the
Reference Only
