cube taps
).
Eliminate
octopus connections
: if more than one receptacle plug is needed, use a power bar or power
distribution strip that has an integral power cord and a built-in over-current protection.
Do not connect or splice extension cords together to make a longer connection: the resulting extension
cord may not be able to provide sufficient current or power safely.
Do not tie power cords in knots. Knots can cause short circuits and shocks. Loop the cords or use a
twist lock plug.
Do not break off the third prong (ground prong) on a plug: replace broken three-prong plugs and make
sure the third prong is properly grounded.
Do not use extension cords as permanent wiring: use extension cords only as a temporary (for example
30 days) power supply to an area that does not have a power outlet.
2.3.2 Belt Sanders
2.3.2.1
Use
Inspect sanding belts before using them. Replace belts that are worn or frayed.
Install sanding belts that are the same width as the pulley drum.
Adjust sanding belt tension to keep the belt running true and at the same speed as pulley drum.
Secure the sanding belt in the direction shown on the belt and the machine.
Keep hands away from a sanding belt.
Use two hands to operate sanders: one on a trigger switch and the other on the manufacturer-supplied
hand-hold.
Keep all cords clear of sanding area during use.
2.3.2.2
Powering On and Off
Make sure the sander is switched to OFF before connecting the power supply.
Disconnect power supply or unplug the sander before changing a sanding belt, making adjustments, or
emptying dust collector.
2.3.2.3
Cleaning and Maintenance
Clean dust from the motor and vents at regular intervals.
2.3.2.4
Personal Protective Equipment
Wear safety glasses and/or a face shield.
Wear a dust respirator for dusty operations.
2.3.3 Circular Saws
2.3.3.1
Use
Select the correct blade for stock being cut and allow it to cut steadily. Do not force it.
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Ensure that the blade that you have selected is sharp enough to do the job. Sharp blades work better
and are safer.
Set the depth of the blade, while the saw is unplugged, and lock it at a depth so that the lowest tooth
does not extend more than about 0.3 centimeter or 1/8 inch beneath the wood.
Check the retracting lower blade guard to make certain it works freely. It should enclose the teeth as
completely as possible and cover the unused portion of the blade when cutting.
Check that the retracting lower blade guard has returned to its starting position before laying down the
saw.
Keep upper and retracting lower blade guard clean and free of sawdust.
Check the saw for proper blade rotation.
Keep all cords clear of cutting area.
Secure work being cut to avoid movement.
Use two hands to operate saws - one on a trigger switch and on the manufacturer-supplied hand-hold.
Circular saws are designed for right-hand operation; left-handed operation will demand more care to
operate safely.
Do Not
Carry the saw with a finger on the trigger switch.
Hold or force the retracting lower guard in the open position.
Place hand under the shoe or guard of the saw.
Over tighten the blade-locking nut.
Twist the saw to change, cut, or check alignment.
Use a saw that vibrates or appears unsafe in any way.
Force the saw during cutting.
Cut materials without first checking for obstructions or other objects such as nails and screws.
Overreach. Keep proper footing and balance.
Rip stock without using a wedge or guide clamped or nailed to the stock.
2.3.3.2
Powering On and Off
Disconnect power supply or unplug the saw before adjusting or changing the blade.
Allow the saw to reach full power before starting to cut.
2.3.3.3
Cleaning and Maintenance
Keep the motor free from accumulation of dust and chips.
2.3.3.4
Personal Protective Equipment
Wear safety glasses or a face shield.
Wear an approved respirator or dust mask when exposed to harmful or nuisance dusts.
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Use appropriate hearing protection equipment in noisy areas.
2.4 Fuel Power Tools
2.4.1 General
All fuel power tools must be stopped and shut down for refueling, servicing, or maintenance. Fire
extinguishers must be available in the immediate area. All fuel power tools must meet the requirements
of
Chapter 12, “Fire and Life Safety”
, for combustible materials.
Fuel power tools must not be used inside of any building. An alternative tool must be used.
2.4.2 Gasoline Power Tools
Gasoline must be stored in approved containers or portable tanks per Department of Transportation
(DOT) regulations.
Fire extinguishers of the correct type must be available where gasoline is stored.
An additional extinguisher must be located outside of the room or immediate area where the gasoline is
stored.
When tools are filled, or when gasoline is transferred between containers, proper grounding and
bonding procedures must be used.
2.4.3 Gasoline Power Saws
The saw must have a control that returns to idle when released.
The clutch must be adjusted to prevent the chain drive from engaging at idle speed.
The operator must be positioned properly to avoid injury in case of kick back.
The engine must be stopped when the saw is carried over 100 feet, or when it is being cleaned,
refueled, adjusted, or repaired.
2.5 Hydraulic Power Tools
The fluid used in hydraulic power tools must be fire-resistant and retain its operating characteristics at
the most extreme working temperatures to which it will be exposed.
Users must refer to the manufacturer’s manual for the safe operating pressure of tools hoses, pipes,
valves, filters, and fittings.
Hydraulic power tools should have a non-leak feature on the disconnect fittings.
2.6 Pneumatic Power Tools
There are several dangers encountered in the use of pneumatic tools, which are powered by compressed air.
The main one is the danger of getting hit by one of the tool’s attachments or by some kind of fastener the
worker is using with the tool.
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2.6.1 General
2.6.1.1
Use
Check to see that pneumatic tools are fastened securely to the hose to prevent them from becoming
disconnected. All pneumatic tools must be secured to the hose or whip by some positive means to
prevent the tool from accidentally disconnecting.
Do not hoist or lower tools by the hose.
Do not exceed the manufacturer’s safe operating pressure for hose, pipe, valves, filters, and fittings.
2.6.1.2
Switches and Controls
All hoses over 1.27 centimeters (0.5 inch) in diameter must have a safety device (pressure regulator) at
the source of supply or branch line to reduce pressure if the hose fails. All connections must be
provided with a device to prevent whipping.
2.6.1.3
Guarding
A safety clip or retainer must be installed to prevent attachments, such as chisels on a chipping
hammer, from being unintentionally shot from the barrel.
2.6.1.4
Powering On and Off
Disconnect from the source and release any pressure in lines before making any adjustments or repairs.
2.6.1.5
Personal Protective Equipment
Eye protection is required and face protection is recommended for workers using pneumatic tools.
Protective screens should be used to protect nearby workers from being struck by flying fragments
generated by the use of pneumatic tools.
2.6.2 Compressed Air Guns
2.6.2.1
Use
Compressed air nozzles should not be aimed or pointed at other workers unless the specific operation
requires this action. Users should never
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