PROTECTION IN CONSTRUCTION, DEMOLITION AND
EXCAVATION OPERATIONS
(Statutory authority: Labor Law, §§27-a, 27, 29)
SUBPART 23-9 POWER-OPERATED EQUIPMENT
23-9.1
Application of this subpart
23-9.2 General
requirements
23-9.3 Conveyors
and cableways
23-9.4 Power
shovels and backhoes used for material handling
23-9.5 Excavating
machines
23-9.6 Aerial
baskets
23-9.7 Motor
trucks
23-9.8 Lift and
fork trucks
23-9.9 Power
buggies
23-9.10 Pile drivers
23-9.11 Mixing machines
SUBPART 23-9
POWER-OPERATED EQUIPMENT
Historical Note
Subpart filed May 30, 1972 eff. June 1, 1972.
§ 23-9.1 Application of this Subpart.
The provisions of this Subpart shall apply to power-operated heavy
equipment or machinery used in construction, demolition and
excavation operations. These provisions shall not apply to material
or personnel hoists (see Subpart 23-6) nor to cranes and derricks
(see Subpart 23-8).
Historical Note
Sec. filed May 30, 1972 eff. June 1, 1972.
§ 23-9.2 General requirements.
(a) Maintenance. All power-operated equipment shall be maintained in
good repair and in proper operating condition at all times.
Sufficient inspections of adequate frequency shall be made of such
equipment to insure such maintenance. Upon discovery, any structural
defect or unsafe condition in such equipment shall be corrected by
necessary repairs or replacement. The servicing and repair of such
equipment shall be performed by or under the supervision of
designated persons. Any servicing or repairing of such equipment
shall be performed only while such equipment is at rest.
(b) Operation. (1) All power-operated equipment used in
construction, demolition or excavation operations shall be operated
only by trained, designated persons and all such equipment shall be
operated in a safe manner at all times.
(2) Operators of power-operated material handling equipment shall
remain at the controls while any load is being handled.
(c) Loading. Power-operated material handling equipment shall not be
loaded in excess of the manufacturer's design live load rating. All
loads shall be properly trimmed to prevent dislodgment of any part
of such loads during transit.
(d) Protection of moving parts. Gears, belts, sprockets, drums,
sheaves and any points of contact between moving parts of
power-operated equipment or machines when not guarded by location
shall be guarded in compliance with this Part (rule) and with
Industrial Code Part (rule) 19.
(e) Refueling. While refueling, the engines of power-operated
equipment or machines shall be stopped except for turbo-charged
diesel engines which are refueled through a special connection which
prevents exposure of the fuel to the atmosphere. Open flames and any
spark producing devices shall be kept a safe distance away from any
area where engines are being refueled. Persons shall not smoke or
carry lighted smoking materials in such area.
(f) Engine exhaust. Steam or exhaust gases from power-operated
equipment shall be discharged at a point where such steam or gases
will not contaminate the air in a working zone. Such discharges
shall be in compliance with any regulations, orders, or laws
promulgated by any authority concerned with air pollution.
(g) Equipment at rest. The operators of material handling equipment
shall not leave such equipment while loads, buckets or blades are
suspended. Any such load, bucket or blade shall be brought to rest
on blocks, shall be lowered to the ground, grade or equivalent
surface or shall be brought to the lowest end of travel of the
equipment.
(h) Roll-over protection required. (1) Roll-over protective
structure.
(i) Any new self-propelled earth-moving, excavating or grading
equipment or machines, whether mounted on crawlers or wheels, which
is sold or offered for sale in New York State after January 1, 1973
shall be equipped with an approved roll-over protective structure
when such equipment is used or intended to be used at any location
in New York State subject to the provisions of the Labor Law or of
this Part (rule). Such equipment shall include: grader; bulldozer;
tractor (prime mover) having a manufacturer's rated flywheel
horsepower of 50 or more; front end loader with bucket capacity
rated by the manufacturer at one cubic yard or more; scraper and
off-highway type hauler having capacities rated by the manufacturers
at five cubic yards or more.
(ii) Any self-propelled earth-moving, excavating or grading
equipment or machines, whether mounted on crawlers or wheels, which
has been manufactured after July 1, 1971 and before December 31,
1972, and which is sold or offered for sale in New York State shall
be equipped with an approved rollover protective structure by July
1, 1973, when such equipment is used or intended to be used at any
location in New York State subject to the provisions of the Labor
Law or of this Part (rule).
(iii) Such roll-over protective structure shall be designed,
constructed and installed to protect the operator in the event of
accidental overturning of such equipment.
(2) Approved seat belt required. Any equipment required by this Part
(rule) to have an approved roll-over protective structure shall also
be provided with an approved seat belt for each seat. Such seat belt
shall be used by the operator whenever the equipment is being
operated.
Exception: Tractors with pipe-laying equipment installed are not
required to be provided with the roll-over protection.
(i) Riding. Persons shall not ride on the loads, buckets, blades,
slings, balls, hooks, or similar parts of power-operated equipment
or machines.
Historical Note
Sec. added, filed May 30, 1972 eff. June 1, 1972.
§ 23-9.3 Conveyors and cableways.
(a) Walkways. Walkways along and adjacent to conveyor belts shall be
kept free of materials and shall be unobstructed for their entire
length. Where such walkways are located three feet or more above the
ground, grade, floor or equivalent surface such walkways shall be
provided with a safety railing constructed and installed in
compliance with this Part (rule).
(b) Trippers. Where trippers are used to control discharge of
materials from conveyors devices for throwing the belt drives into
neutral shall be installed at both ends of the runways.
(c) Spillage. Where conveyor belts cross over any sidewalk, street,
highway, or any other area where persons may work or pass, trays of
sufficient size to catch any spillage from such belts shall be
installed.
(d) Overhead protection. Where persons work or pass directly beneath
a conveyor, overhead protection in compliance with this Part (rule)
shall be provided.
(e) Signal system required. A signal system in compliance with
Subpart 23-6 of this Part (rule) shall be used in conjunction with
conveyors for starting and stopping and for the raising and lowering
of loads.
(f) Riding prohibited. No person shall ride any conveyor belt or the
bucket or load handled by any cableway.
Historical Note
Sec. added, filed May 30, 1972 eff. June 1, 1972.
§ 23-9.4 Power shovels and backhoes used
for material handling.
Where power shovels and backhoes are used for material handling,
such equipment and the use thereof shall be in accordance with the
following provisions:
(a) Strength. Such equipment shall be so constructed, placed and
operated as to be stable. Such equipment shall not be stressed
beyond their capacities as determined by the manufacturers.
(b) Inspection. (1) Such equipment shall be thoroughly inspected by
designated persons at intervals not exceeding three months.
(2) Inspection and repair of each such machine shall be performed
with the motor stopped and with the boom lowered and adequately
supported.
(3) A written, dated record of the most recent inspection of each
such machine shall be made on a form supplied by the commissioner
and shall be signed by the designated person making such inspection.
Such written record shall be kept on the job site available for
examination by the commissioner.
(c) Footing. Firm, level and stable footing shall be provided for
each such machine. Where such footing is not otherwise supplied, it
shall be provided by substantial timbers, cribbing or other
structural members in sufficient numbers and of sufficient size to
distribute the load so as not to exceed the safe bearing capacity of
the underlying material.
(d) Hoisting mechanism brakes and locking devices. (1) Such
equipment shall be provided with brakes or equivalent devices
capable of sustaining at rest one and one-half times the maximum
rated load.
(2) Hand or foot operated brakes or equivalent devices shall be
provided with substantial locking mechanisms to lock such brakes or
equivalent devices while they are engaged.
(e) Attachment of load. (1) Any load handled by such equipment shall
be suspended from the bucket or bucket arm by means of wire rope
having a safety factor of four.
(2) Such wire rope shall be connected by means of either a closed
shackle or a safety hook capable of holding at least four times the
intended load.
(f) Limitation on modifications. No modifications affecting the load
handling capacity of such machines shall be made unless the
modification is certified by either the manufacturer of the
equipment or by a professional engineer licensed to practice in the
State of New York.
(g) Capacity. No load shall be lifted by such equipment that exceeds
the maximum load specified by the manufacturer of such equipment.
(h) General operation. (1) Any load lifted by such equipment shall
be raised in a vertical plane to minimize swing during hoisting.
(2) Such equipment shall not travel with a suspended load except on
surfaces which conform to the requirements of subdivision (c) of
this section.
(3) Ignition locks or equivalent means shall be provided to prevent
unauthorized use of such equipment.
(4) Unauthorized persons shall not be permitted in the cab or
immediately adjacent to any such equipment in operation.
(5) Carrying or swinging suspended loads over areas where persons
are working or passing is prohibited.
(6) Operation near power lines or power facilities shall be in
compliance with this Part (rule).
Historical Note
Sec. added, filed May 30, 1972 eff. June 1, 1972.
§ 23-9.5 Excavating machines.
(a) Footing. Excavating machines shall not be used where unstable
conditions or slopes of the ground or grade may cause such machines
to tilt dangerously. To prevent such unstable conditions, mats of
timber or equivalent means to afford stable footings shall be
provided.
(b) Protection of operator. Where an operator of an excavating
machine may be exposed to an overhead hazard, such equipment shall
be provided with a cab or equivalent cover affording protection
against such hazard.
(c) Operation. Excavating machines shall be operated only by
designated persons. No person except the operating crew shall be
permitted on an excavating machine while it is in motion or
operation. No person other than the pitman and excavating crew shall
be permitted to stand within range of the back of a power shovel or
within range of the swing of the dipper bucket while the shovel is
in operation. When an excavating machine is not in use, the blade or
dipper bucket shall rest on the ground or grade. The operator of an
excavating machine shall not leave the controls of such machine at
any time when the master clutch is engaged and the engine is
operating. Oiling and greasing shall be performed only while an
excavating machine is at rest and the master clutch disengaged. The
boom or the bucket, dipper or clamshell of a power shovel shall not
pass over the seat or cab of a truck or other vehicle while any
person is in such seat or cab.
(d) Operation near power lines or power facilities. The operation of
excavating machines near power lines or power facilities shall be in
compliance with this Part (rule).
(e) Trenching. Material shall not be pushed manually into the path
of trenching machines.
(f) Stopping or parking excavating machines. The operator of any
excavating machine shall not leave the controls of such machine
until he has lowered the bucket or blade into firm contact with the
ground or grade surface.
(g) Backing. Every mobile power-operated excavating machine except
for crawler mounted equipment shall be provided with an approved
warning device so installed as to automatically sound a warning
signal when such machine is backing. Such warning signal shall be
audible to all persons in the vicinity of the machine above the
general noise level in the area.
Historical Note
Sec. added, filed May 30, 1972 eff. June 1, 1972.
§ 23-9.6 Aerial baskets.
(a) Equipment inspection. Prior to the use of an aerial basket the
operator shall make a daily inspection of the equipment.
(1) Such daily inspection shall include the following:
(i) All attachment welds between the actuating cylinders and the
boom or pedestal.
(ii) All pivot pins for security of their locking devices.
(iii) All exposed ropes, sheaves and leveling devices for both
excessive wear and security of attachment.
(iv) Hydraulic systems for leaks and excessive wear.
(v) Boom and basket for cracks and abrasions.
(vi) The lubrication and fluid levels.
(2) A test operation of the boom from the ground controls through
one complete cycle shall be performed by the operator. The basket
controls shall be tested to make sure that they are in proper
working order. The truck driver shall test the truck brakes and
other automative operating accessories.
(3) A record of such inspection and testing shall be made by the
operator. Such record shall be kept on the job site available for
examination by the commissioner.
(4) All defects, malfunctions or any other conditions found during
such inspection and test which may affect the safe operation of the
aerial basket shall be corrected before such aerial basket is placed
in operation.
(b) Aerial basket safeguards. (l) Where aerial basket controls are
so located that they may come into contact with obstructions, such
controls shall be protected by guarding or equivalent protection
shall be provided.
(2) The lower controls at ground or grade level shall be capable of
overriding the controls located in the basket.
(c) Driving or moving of aerial basket truck. (1) Aerial basket
truck drivers and aerial basket operators shall be competent
designated persons who have been trained in the operation and use of
such equipment.
(2) The instrument panel of the truck cab shall be equipped with an
automatic warning device, such as a light or similar device, to warn
the driver when the boom is raised.
(3) Driving or moving the aerial basket truck while any person is
elevated in the basket is prohibited.
(d) Truck placement. Prior to aerial basket operation, the truck
shall be placed only on solid ground or equivalent surface to
provide a substantially sound footing for the truck wheels and
outriggers. The truck shall be so located that both front and rear
axes are approximately horizontal, though they may be at different
elevations, so that the truck does not lean sideways. Before the
operation of the basket, a person stationed on the ground shall, by
signaling, the truck driver, position the truck and maneuver the
empty basket into the proper working position. The basket shall then
be returned to the ground or cradled in its traveling position. Such
person shall also examine the outriggers for proper positioning and
truck stability. Before such outriggers are lowered or extended,
such person shall make sure that no obstructions or other persons
are in the way.
(e) Aerial basket operation. (1) The use of an aerial basket as an
anchoring point for a block and tackle, or as a make-shift boom on a
straight lift is prohibited.
(2) Aerial basket equipment designed for use as a derrick shall be
equipped with an approved boom angle indicator so that the operator
will know the boom angle at all times. A capacity chart showing safe
loads, boom heights and horizontal reach distances at various boom
angles shall be installed next to the operating controls clearly
legible to the operator from his operating position.
(3) Before the basket is moved, the operator shall observe the
location of all obstructions and any other hazards which may be in
the vicinity. The operator shall always face the direction in which
the basket is moving or is about to move.
(4) The operation of an aerial basket near power lines or power
facilities shall be in compliance with this Part (rule).
(5) All air or oil supply hoses for power tools used from the aerial
basket shall be free of any conductive material.
(6) The truck and the aerial basket vehicle shall be adequately
grounded at all times when in use or the basket shall be isolated
from the truck by insulation.
(7) Where aerial baskets are operated near power lines and power
facilities, materials and tools shall not be passed between a person
on the ground or grade level and a person in the basket, unless both
such persons are wearing high-voltage rubber gloves and other
protective equipment, such as rubber sleeves and safety hats or
caps. During such use of an aerial basket, persons shall not enter
or leave the truck while the boom or basket is near or in contact
with electrically energized equipment and no person on the ground or
grade level shall be suffered or permitted to touch the truck.
(8) Persons shall enter or leave an aerial basket only when such
basket is resting on the ground or grade level or cradled in the
traveling position. Persons shall stand clear of the path of the
basket and boom when such basket is being lowered. Any movement of
the vehicle while persons are elevated in the basket is prohibited.
(9) While persons are in the elevated basket, persons on the ground
or grade level shall not enter the area directly beneath such basket
except when required by the persons in the basket.
(10) Tools, equipment and materials shall not be thrown from or to
the elevated basket.
(11) All tools not in use shall be adequately secured in trays in
the baskets, or adequately secured in suitable belt holsters.
(12) Standing on the rim of the basket, placing and standing on
boards across the rim of the basket or placing and standing on
ladders in the basket is prohibited.
(13) Unless in an emergency situation, or upon request of a person
in the aerial basket, the controls to lower the boom shall be
operated only by persons in the elevated basket.
Historical Note
Sec. added, filed May 30, 1972 eff. June 1, 1972.
§ 23-9.7 Motor trucks.
(a) Brake maintenance. The brakes of every motor truck shall be so
maintained that such truck with full load may be securely held on
any grade that may be encountered in normal use on the job.
(b) Blocks. (1) Provision shall be made to apply wheel blocks to any
truck ascending any ramp with a slope steeper than one in 10 to
prevent the truck from sliding in case of stall.
(2) No person shall work under the raised body of a dump trunk
unless such body is securely blocked to prevent accidental lowering.
(c) Loading. Trucks shall not be loaded beyond their rated
capacities and all loads shall be trimmed before the trucks are
moved. Loads that are apt to become dislodged in transit shall be
securely lashed in place.
(d) Backing. Tracks shall not be backed or dumped in places where
persons are working nor backed into hazardous locations unless
guided by a person so stationed that he sees the truck drivers and
the spaces in back of the vehicles.
(e) Riding. No person shall be suffered or permitted to ride on
running boards, fenders or elsewhere on a truck or similar vehicle
except where a properly constructed and installed seat or platform
is provided.
(f) Dumping. No person shall be located within the body
(load-carrying portion) of a truck while the dumping mechanism is
being operated.
(g) Cab protector. Dump truck bodies which are loaded by mechanical
means shall be equipped with suitable steel cab protectors which
cover at least the rear quarter of the tops of such cabs.
Historical Note
Sec. added, filed May 30, 1972 eff. June 1, 1972.
§ 23-9.8 Lift and fork trucks.
(a) Capacity. A metal plate with legible etched or stamped figures
giving the capacity rating in pounds shall be attached to every lift
or fork truck. A pouch firmly secured to the truck and containing a
document having the following information may be used as a means of
identifying the load rating of the truck: truck make, model, serial
number, and load rating in pounds.
(b) Overloading prohibited. No lift or fork truck shall be loaded
beyond its capacity rating.
(c) Brakes and load-elevating mechanisms. Every power-operated fork
and lift truck shall be provided with a lockable brake. The
load-elevating mechanism shall be capable of being locked at any
elevation.
(d) Hand-lift handles. Every pallet truck having a hand-lift handle
shall be provided with an automatic device to retain the raised load
and free the handle until it is re-engaged by the operator.
(e) Operating surfaces. No lift or fork truck shall be used on any
surface that is so uneven as to make upsetting likely.
(f) Packaged masonry units. No masonry units packaged by means of
wire or metal tape shall be handled by a lift or fork truck when any
part of such wire or tape binding is broken.
(g) Loose masonry units. Unless palletized masonry units are
securely bound in package form, provisions should be made to prevent
spillage.
(h) Support of pallets. Loaded pallets shall be kept level at all
times. Masonry units used as pallet supports shall be securely
lashed to the pallet and shall be of proper quality and number to
provide stable footing for the load. Loose material and other
unstable supports for pallets shall not be used.
(i) Protection of operator. Every fork lift truck shall be provided
with a substantial overhead canopy or screen to protect the operator
from falling objects and materials.
(j) Prohibited use. No lift or fork truck shall be in motion when
the loaded forks are elevated higher than necessary to clear floor
obstructions except as required for positioning to deposit the load.
(k) Riding on forks. No person shall stand or ride on the forks of a
moving fork lift truck.
(1) Warning devices. Every power-operated fork lift truck shall be
equipped with a horn, whistle, gong or similar warning device which
can be actuated by the operator. Such device shall be clearly
audible above the normal noise level in the work area.
Historical Note
Sec. added, filed May 30, 1972 eff. June 1, 1972.
§ 23-9.9 Power buggies.
(a) Assigned operator. No person other than a trained and competent
operator designated by the employer shall operate a power buggy.
(b) Defective machines. No power buggy shall be operated unless it
is in compliance with this Part (rule) and is in good operating
condition.
(c) Mechanical requirements. (1) Stability. Every power buggy shall
be so designed and constructed as to withstand without tilting the
following:
(i) A 45 degree turn at full rated load and maximum designed forward
speed.
(ii) A collision stop against wheel blockage on a level grade at
full rated load and one-half maximum designed forward or full
reverse speed.
(iii) Lateral traversal of 10 percent grade slopes at full rated
load and maximum designed speed.
(2) Braking power. (i) Every power buggy shall be provided with
brakes and tire surfaces capable of bringing such buggy to a full
stop within 25 feet on a level dry plank surface or frictional
equivalent at full rated load and maximum designed speed.
(ii) Brakes shall be capable of being fixed in engagement to hold
the full load stationary on a 25 percent grade.
(3) Accidental starting. The controls of every power buggy shall be
so arranged, shielded or located that they cannot be accidentally
engaged.
(4) Warning devices. Every power buggy except those having maximum
speeds of three miles per hour and upon which no person rides shall
be equipped with an easily operable horn or other audible warning
signal. Such audible horn or other signal shall be capable of being
heard above the normal noise level in the area.
(5) Seats and visibility. Every power buggy of the riding type shall
be provided with an operator's seat or standing platform designed
and secured to prevent slipping off and located that the operator
may have maximum practicable driving visibility.
(6) Speed. Every power buggy of the riding type shall be designed or
equipped that it cannot travel faster than 12 miles per hour on a
level surface.
(d) Operation. (1) Parking on grades. No power buggy shall be left
unattended on any grade sufficiently steep to cause such buggy to
coast if free of engine and brake resistance.
(2) Prohibited operation. No power buggy shall be operated:
(i) at a speed greater than 12 miles per hour;
(ii) when carrying more than its full rated load;
(iii) on insecure or slippery surfaces or on surfaces so inclined or
uneven as to endanger stability;
(iv) on grades steeper than 25 percent; or
(v) on ramps, runways or other surfaces not in compliance with this
Part (rule).
(e) Special requirements for runways and ramps. Runways, ramps,
platforms and other surfaces upon which power buggies are operated
shall conform to the following requirements:
(1) They shall be substantially constructed and securely supported,
braced and fastened to prevent movement.
(2) They shall be constructed to sustain without failure at least
four times the maximum load for which they are intended.
(3) The minimum width inside of curbs for any ramp, runway or
platform for single lane power buggy traffic shall be two feet wider
than the outside width of any power buggy operated thereon and two
feet wider than twice such buggy width in places where passing or
two lane traffic occurs.
(4) Ramps shall be limited to maximum grades of one on four.
(5) All runways shall be substantially level transversely.
(6) Curbs in compliance with this Part (rule) shall be provided
along the edges of surfaces upon which power buggies are operated as
follows:
(i) Curbs shall be furnished along all edges which are nearer than
10 feet horizontally to the edge of any unenclosed floor area, shaft
or other open space into or through which a fall from such surface
of more than 24 inches vertically is possible, except as set forth
in subparagraph (iii) below.
(ii) Where curbs are not required because the buggy is operated on a
surface not over 24 inches above any floor or equivalent surface
below, such lower surface shall be strong enough to sustain the
loaded power buggy in event of a fall thereon.
(iii) Curbs may be omitted at actual dumping points more than 24
inches above any floor or equivalent surface below if the edge over
which the dumping occurs is provided with bumpers or other means
which will effectively stop the buggy from running over the edge
while dumping.
Historical Note
Sec. added, filed May 30, 1972 eff. June 1, 1972.
§ 23-9.10 Pile drivers.
(a) Footing. Before placing or advancing a pile driver, the ground
shall be inspected and, where necessary for firm and level footing,
cribbing or timber mats shall be provided to assure stability for
the pile driver. After placing or advancing a pile driver,
inspection and correction of the footing shall be made as necessary
to maintain such stability.
(b) Inspection. All pile driving equipment shall be inspected daily
before the start of work and every defect or unsafe condition shall
be immediately corrected before pile driving operations are begun.
(c) Protection of operator. The operator of every pile driver shall
be protected from falling objects or materials, steam, cinders and
water by a substantial covering.
(d) Qualifications of operators. Each member of the pile driving
crew shall be properly instructed in the work he is to perform and
the pile driving operation shall be in charge of a trained,
designated person who alone shall direct the work and give the
operating signals.
(e) Handling of piles. The preparation of the piles shall be done at
a safe distance from the driving operation. During the hoisting of
piles, all persons not actually engaged in operating the equipment
and handling the piles shall be kept from the area.
(f) When not in use. When any pile driver is not in use the hammer
shall be chocked or blocked in the leads or lowered to the ground or
grade level.
(g) Temporary interruption. The operator of every pile driver shall
remain at the controls when the driving is interrupted until the
hammer has been chocked or blocked in the leads, or has been lowered
and is resting on a driven pile or on the ground.
(h) Steam and air lines. Steam and air hose shall be securely
fastened in place at couplings and intermediate points to prevent
dangerous whipping of such hose in the event of a break. The control
valves for steam and air lines shall be located within easy reach of
the operator at his operating position.
(i) Driving plates, cushions and striking heads. Driving plates,
cushions and striking heads shall be securely and positively
fastened in such manner as to prevent their dislodgment during the
driving operations.
(j) Ladders. A ladder extending from the bottom of the leads to the
overhead sheaves shall be permanently attached to the structure
supporting the leads.
(k) Working platforms. Where a structural tower supports the leads,
working platforms consisting of planking at least two inches thick,
full size, laid tight shall be provided on all levels of the leads
at which it is necessary for persons to work. Such platforms shall
be provided with safety railings constructed and installed in
compliance with this Part (rule) on all sides, except on the hammer
or lead side of the platforms. Where such platforms cannot be
provided approved safety belts and lifelines shall be provided.
(l) Mandril support. Mandrils shall be attached to the leads by
safety chains or cables to prevent dislodging or falling during
connection to piles.
Historical Note
Sec. added, filed May 30, 1972 eff. June 1, 1972.
§ 23-9.11 Mixing machines.
(a) Charging skips. Each time before raising or lowering a charging
skip, the operator shall make sure that no person is located in the
danger area. In addition, there shall be a safety railing
constructed and installed in compliance with this Part (rule) on
both sides of the charging skip so arranged as to prevent passage of
any person under the raised skip.
(b) Hoppers. Hoppers into which a person may fall shall be
effectively guarded with a substantial iron grating consisting of
crossbars of one-half inch round stock or its equivalent, spaced not
to exceed five inches between bars. Maximum openings in such grating
shall be one square foot in size.
(c) Bucket hoists. Where a falling hazard exists at the point where
a mixer discharges into a bucket hoist, such point shall be guarded
by location, by a safety railing constructed and installed in
compliance with this Part (rule) or by other equivalent means.
(d) Flywheels. Flywheels and power transmission mechanisms shall be
kept covered and guarded against accidental contact.
(e) Trough type mixers. The revolving blades of trough or batch type
mixing machines shall be guarded with a substantial iron grating
consisting of crossbars of one-half inch round stock or its
equivalent, spaced not to exceed five inches between bars and
located at least five inches above the blades.
Historical Note
Sec. added, filed May 30, 1972 eff. June 1, 1972.
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