Hoist chains inspections,
including end connections, for excessive wear, twist, distorted links
interfering with proper function, or stretch beyond manufacturer's recommendations.
Visual inspection daily; monthly inspection with a certification record
which consists of the date of inspection, the signature of the person
who performed the inspection and an identifier of the chain which was
inspected.
Rope inspection.
- (1) Running ropes. A thorough inspection of all ropes shall be made
at least once a month. A certification record - including the date of
inspection, the signature of the person who performed the inspection
and an identifier for the ropes which were inspected - shall be kept
on file where readily available to appointed personnel. Any deterioration,
resulting in appreciable loss of original strength, shall be carefully
surveyed and determination made as to whether further use of the rope
would create a safety hazard.
Rated load marking.
The rated load of the crane shall be plainly marked on each side of
the crane. If the crane has more than one hoisting unit, each hoist
shall have its rated load marked on it, or its load block and this shall
be clearly legible from the ground of floor.
Brakes for hoist.
(i) Each independent hoisting unit of a crane shall be equipped with
at least one self-setting brake, hereafter referred to as a holding
brake, applied directly to the motor shaft or some part of the gear
train.
Each independent
hoisting unit of a crane, except worm-geared hoist, the angle of whose
worm is such as to prevent the load from accelerating direction shall,
in addition to a holding brake, be equipped with control braking means
to prevent over speeding.
Control braking
means. (i) A power control braking means such as regenerative, dynamic
or counter-torque braking, or a mechanically controlled braking means
shall be capable of maintaining safe lowering speeds of rated loads.
The
voltage at pendant push-buttons shall not
exceed 150 volts for a.c.
Pendant
control boxes shall be constructed to prevent
electrical shock and shall be clearly marked
for identification of functions.
Cranes shall not
be used for side pulls except when specifically authorized by a responsible
person who has determined that the stability of the crane is not thereby
endangered and that various parts of the crane will not be over-stressed.
The operator shall
test the brakes each time a load approaching the rate load is handled.
Raising the load a few inches and applying the brakes shall test the
brakes.
When two or more
cranes are used to lift a load; one qualified responsible person shall
be in charge of the operation. He shall analyze the operation and guide
all personnel involved in the proper positioning, rigging of the load,
and the movements to be made.
Hoist limit switch.
(i) At the beginning of each operator's shift, the upper limit switch
of each hoist shall be tried out under no load. Maximum care shall be
exercised; the block shall be "inched" into the limit or run in at a
low speed. If the switch does not operate correctly, the appointed person
shall be promptly notified.
