Ohio Admin. Code 4123:1-5-14 - Power-driven cranes and hoists
The term "overhead electric traveling crane"
shall mean
means a crane consisting of a bridge mounted on trucks
which runs on rails and the hoisting mechanism mounted on a trolley which moves
transversely across the bridge, and may be controlled from a cab or from remote
or pendant controls.
Holding brakes for hoist motors shall
will have not
less than the following percentage of the full load hoisting torque at the
point where the brake is applied.
One hundred twenty-five per cent when used with a control braking means other than mechanical.
One hundred per cent when used in conjunction with a mechanical control braking means.
One hundred per cent each if two holding brakes are provided.
A footwalk with standard guard railing and toeboards
shall
will be
placed along the cab access side of the bridge.
Rail stops shall
will be provided at both ends of crane runway and
at ends of trolley travel.
A crane shall
will be provided with bumpers or other automatic
means providing equivalent effect, unless the crane travels at a slow rate of
speed and has a faster deceleration rate due to the use of sleeve bearings, or
is not operated near the ends of bridge and trolley travel, or is restricted to
a limited distance by the nature of the crane operation and there is no hazard
of striking any object in this limited distance, or is used in similar
operating conditions.
The bumpers shall
will be capable of stopping the crane (not
including the lifted load) at an average rate of deceleration not to exceed
three ft/s/s when traveling in either direction at twenty percent of the rated
load speed.
A trolley shall
will be provided with bumpers or other automatic
means of equivalent effect, unless the trolley travels at a slow rate of speed,
or is not operated near the ends of bridge and trolley travel, or is restricted
to a limited distance of the runway and there is no hazard of striking any
object in this limited distance, or is used in similar operating
conditions.
The bumpers shall
will be capable of stopping the trolley (not
including the lifted load) at an average rate of deceleration not to exceed 4.7
ft/s/s when traveling in either direction at one-third of the rated load
speed.
On cab-operated cranes, a warning device or signal
shall
will be
provided for use in warning personnel of crane travel.
Enclosed crane cabs shall
will be provided with windows in front and on
both sides.
Open cabs shall
will be provided with standard guard railing, and
toeboard, and gate. If the opening height is inadequate for a standard guard
railing, a chain or angle iron shall
will be used to guard the opening.
Means of escape shall
will be provided for operators of overhead
cranes.
Cabs of cranes subjected to excessive heat from below
shall
will
have floors insulated with a noncombustible material.
All current-carrying parts in crane cabs
shall
will be
guarded.
A hoist limiting device shall
will be
provided for each hoist to limit the upward travel.
Holding brakes for hoist motors shall
will have not
less than the following percentage of the full load hoisting torque at the
point where the brake is applied.
Holding brakes on hoists shall
will be applied
automatically when power is removed.
Rail stops shall
will be provided at the outer end of jib
boom.
A hoist limiting device shall
will be
provided for each hoist.
A stop shall
will be provided at all switches and turntables
which will prevent the trolley from running off should the rail switch be
turned to "open" or left in an open position.
Rail stops shall
will be provided at the ends of crane
runway.
A hoist limiting device shall
will be
provided for each hoist.
Holding brakes for hoist motors shall
will have not
less than the following percentage of the full load hoisting torque at the
point where the brake is applied.
Holding brakes on hoists shall
will be applied
automatically when power is removed.
All bridge track wheels shall
will be
equipped with sweeps.
The bumpers shall
will be capable of stopping the crane (not
including the lifted load) at an average rate of deceleration not to exceed
three ft/s/s when traveling in either direction at twenty per cent of the rated
load speed.
A trolley shall
will be provided with bumpers or other automatic
means of equivalent effect, unless the trolley travels at a slow rate of speed,
or is not operated near the ends of bridge and trolley travel, or is restricted
to a limited distance of the runway and there is no hazard of striking any
object in this limited distance, or is used in similar operating
conditions.
The bumpers shall
will be capable of stopping the trolley (not
including the lifted load) at an average rate of deceleration not to exceed 4.7
ft/s/s when traveling in either direction at one-third of the rated load
speed.
An anchor or rail blocking device shall
will be
installed on all gantry cranes which are exposed to external weather.
A hoist limiting device shall
will be
installed on each hoist.
Defective crane safety devices or load-carrying equipment
shall
will be
repaired or replaced.
Crane access ladders, stairways, and/or walkways
shall
will be
provided on all cranes.
The maximum capacity recommended by the manufacturer
shall
will be
posted on each crane.
Warning signs, "out-of-order" signs, or warning devices
shall
will be
placed on each crane under repair.
Notes
Promulgated Under: 119.03
Statutory Authority: 4121.12, 4121.121, 4121.13
Rule Amplifies: 4121.47
Prior Effective Dates: 04/01/1964, 08/01/1977, 04/01/1999, 04/10/2011, 02/01/2022
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