 |
| |
IMPORTANT
WARNINGS
Failure
to follow warnings and instructions can result in
serious injury or death.
|
|
| WIRE
ROPE IS A MACHINE. Understand and respect it. |
Like
any machine, it needs proper care and maintenance for
optimal safety and long service life. For a better understanding
of wire rope we highly recommend the Wire Rope Users Manual
by the Wire Rope Technical Board. Excerpts of that manual
have been reprinted in the wire rope section of this catalog.
|
| Refer
to the General Warnings on pages 3 and 4. |
These
warnings also apply to wire rope. Only additional
warnings and information are listed below. |
|
Rated
capacity is the load which a new wire rope may handle
under given operating conditions and at assumed design
factor. A design factor of 5 is chosen most frequently
for wire rope. (Operating loads not to exceed 20% of
catalog Breaking Strength.) Operating loads may have
to be reduced when life, limb or valuable property are
at risk or other than new rope is used. A design factor
of 10 is usually chosen when wire rope is used to carry
personnel. (Operating loads not to exceed 10% of catalog
Breaking Strength.)
Responsibility
for choosing a design factor rests with the user.
|
| Attachments
must have at least the same Working Load Limit as
the wire |
Clips,
sockets, thimbles, sleeves, hooks, links, shackles, sheaves,
blocks, etc. must match in size, material and strength
to provide adequate safety protection. Proper installation
is crucial for maximum efficiency and safety.
|
| Keep
out from under a raised load. |
Do not
operate load over people. Do not ride on load. Conduct
all lifting operations in such a manner that if equipment
were to fail or break, no personnel would be injured.
This means KEEP OUT FROM UNDER A RAISED LOAD, DO NOT
OPERATE LOADS OVER PEOPLE AND KEEP OUT OF THE LINE OF
FORCE OF ANY LOAD. |
|
Avoid
impacting, jerking or swinging of load. Working Load limit
will not apply in these circumstances because a shock
load is generally significantly greater than the static
load. |
| Inspect
wire rope regularly. |
Use
inspection instructions as guidelines only. Additional
technical information on wire rope inspection can be
obtained from the sources listed on page 73. Two of
the most important prerequisites for inspecting wire
rope are technical knowledge and experience.
Check
the general condition of the wire rope. Also, look for
localized damage and wear, especially at wire rope attachments.
Inspect all parts that come in contact with the wire
rope. Poor performance of wire rope can often be traced
back to worn or wrong-sized sheaves, drums, rollers,
etc. Look for kinks, broken wires, abrasions, lack of
lubrication, rust damage, crushing, reduction of diameter,
stretch or other obvious damage. If any of these
conditions exists or if there is any other apparent
damage to the wire rope, retire the wire rope according
to the instructions below.
When
in doubt about the extent of the damage, retire the
wire rope in question immediately. Without laboratory
analysis, it is impossible to determine the strength
of damaged or used wire. Thus, you will not be able
to tell whether wire rope with any amount of damage
is safe to use. Retire the wire rope that is damaged.
For specific inspection procedures check various OSHA
and ANSI publications.
|
| Destroy,
rather than discard, wire rope to be retired. |
Wire
rope that is not destroyed might be used again by someone
not aware of the hazard associated with that use. Destroying
wire rope is best done by cutting it up into short pieces.
|
| Refer
to General Information on Wire Rope |
for
important characteristics and properties of wire
rope. |
|
|
|
|
