Manitowoc Published 03-29-17, Control # 064-23 2-15
14000 OPERATOR MANUAL SAFETY INFORMATION
d. Clearly mark the boom or luffing hoist cable (so it
can easily be seen by a designated signal person)
at a point that gives the signal person sufficient time
to signal the operator and have the operator stop
the boom or jib within the minimum allowable radius.
2. Anti-Two-Block Device
Temporary alternative measures if inoperative or
malfunctioning:
The qualified person directing the lift shall establish
procedures to furnish equivalent protection. One or
more of the following methods must be used:
a. Assign a signal person to signal the operator to stop
hoisting when the load is a safe distance from the
boom or jib point.
b. Clearly mark the hoist cable (so it can easily be
seen by the operator) at a point that will give the
operator sufficient time to stop the load a safe
distance from the boom or jib point.
NOTE: The temporary alternative measures for the anti-
two-block device do not apply when lifting
personnel in load line supported baskets.
Personnel shall not be lifted in load line
supported baskets when anti-two-block
devices are not functioning properly.
Category 2 Operational Aids
If a Category 2 operational aid is not working properly, it must
be repaired no later than 30 calendar days after the
deficiency occurs. Exception: If the employer documents that
it has ordered the necessary parts within 7 calendar days of
the occurrence of the deficiency, and the part is not received
in time to complete the repair in 30 calendar days, the repair
must be completed within 7 calendar days of receiving the
parts.
1. Rated Capacity Indicator/Limiter
Temporary alternative measures if inoperative or
malfunctioning:
The qualified person directing the lift shall establish
procedures for determining load weights and shall make
sure that the weight of the load does not exceed the
crane’s rating at the radius where the load is handled.
The weight of the load must be provided to the operator
before the lift is made.
2. Boom Angle or Radius Indicator
Temporary alternative measures if inoperative or
malfunctioning:
a. Refer to the pendulum boom angle indictor on the
boom butt (viewable from operator’s cab).
b. Measure the boom angle with a protractor-level on
the centerline of boom.
c. Measure radius using a tape measure.
3. Jib Angle or Radius Indicator
Temporary alternative measures if inoperative or
malfunctioning. Use either or both:
a. First, make sure you know the boom angle (see item
2
above).
b. Then, measure radius using a tape measure.
4. Drum Rotation Indicator
Temporary alternative measures if inoperative or
malfunctioning:
Mark the drum to indicate its rotation.
If the operator cannot see the drum, add mirrors or
remote video cameras and displays so the operator can
see the mark.
5. OPTIONAL Swing Limiter or Proximity Device
Temporary alternative measures if inoperative or
malfunctioning:
The qualified person directing the lift shall establish
procedures to furnish equivalent protection (for
example, assign an additional signal person to observe
the distance between the boom or load and job site
obstructions to include power lines or to limit the swing
sector specified in the Capacity Chart).
6. OPTIONAL Drum Spooling Limiter
(maximum or minimum bail limit)
Temporary alternative measures if inoperative or
malfunctioning:
The qualified person directing the lift, the operator, or a
designated signal person shall watch the drum and
signal the operator to stop it before it is over spooled
(rope does not jump off drum) or before there are less
than 3 full wraps of wire rope on the load drum or boom
hoist.
7. OPTIONAL Closed-Circuit Television (CCTV)
Temporary alternative measures if inoperative or
malfunctioning:
A designated signal person shall watch the load, the
drums, and the counterweight and provide necessary
hand or voice signals to the crane operator.
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