Term
| MECHANICAL HAZARD AND MACHINE SAFEGUARDING |
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Definition
Accidents from mechanical hazards usually result from a combination of factors
Including both hazardous machine conditions and careless human actions
The intent of machine safeguarding is to minimize the risk of accidents from machine-operator contact |
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Crushed by or drawn into equipment
Struck by moving parts
Struck by failed components or particles |
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Where work is performed on the material
cutting, shaping, boring, or forming of stock |
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| TYPES OF MECHANICAL MOTIONS AND ACTIONS |
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Definition
The basic types of hazardous mechanical motions are rotating motions, reciprocating motions and transverse motions
ROTATING MOTION-SPINNING
RECIPROCATION MOTION -BACK AND FORTH
TRANSVERSE MOTION-ONE WAY |
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Can grip hair or clothing
Can force the body into a dangerous position
Projecting pieces increase risk
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Between 2 rotating parts
Between rotating and tangential parts
Between rotating and fixed parts which shear, crush, or abrade
[image] |
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[image]Risk of being struck between stationary and moving part
During the back-and-forth or up-and-down motion, a worker may be struck by or caught between a moving and a stationary part |
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Continuous straight line motion
Worker struck or caught in pinch or shear point
[image] |
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Direct injury from cutting action
Flying chips or sparks
Saws, drills, lathes, mills
[image] |
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LOCATION/DISTANCE
GUARDS FIXED,INTERLOCKED, ADJUSTABLE, SELF-ADJUSTING |
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Definition
| PRESENCE SENSING, PULLBACK,RESTRAINT, SAFETY CONTROLS, GATES |
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| SAFEGUARDING BY LOCATION/DISTANCE |
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Definition
Location of hazardous part(s) that are inaccessible or not a hazard during normal operation
Must maintain safe distance
Training, warning, communication are necessary
[image] |
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[image]
BARRIER IS PERMANENT PART OF MACHINE, PERFERABLE OVER OTHER TYPES |
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| STOPS MOTION WHEN GUARD IS OPEN OR REMOVED[image] |
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| BARRIER MAY BE ADJUSTED FOR VARIABLE OPERATIONS[image] |
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| ADJUST AC[image]CORDING TO SIZE/POSITION OF MATERIAL |
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Cables attached to operator’s hands or wrists
Removes hands from point of operation during danger period[image] |
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Cables attached to fixed point and wrists or hands
Adjustable to let hands travel in predetermined area
May be accompanied by hand-feeding tools[image] |
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Device located around the perimeter of or near the danger area
Operator must be able to reach the cable to stop the machine[image] |
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Requires constant pressure on both pads to activate the machine
Hands on controls at safe distance while machine is in dangerous cycle
[image] |
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Must close fully to protect user before cycle will start
[image] |
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When someone will be servicing or repairing machinery or equipment and
•The unexpected machinery start-up or release of stored energy could cause injury |
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•Authorized employees
•People who lock or tag out machines or equipment to perform servicing
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•Affected employees
•People who use machines or equipment on which servicing is performed under lockout/tagout |
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Term
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Definition
MOVING MACHINERY PARTS
ELECTRICITY-LIVE OR STORED
STORED MECHANICAL MOVEMENT IN MACHINERY
STORED HEAT-STEAM LINES
HOT LIQUIDS
CHEMICALS IN PIPELINES UNDER PRESSURE OR FORCE OF GRAVITY |
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•Prevents a machine from being started up or turned ON •Prevents a machinery part from moving
•Prevents electrical energizing
•Blocks a pipeline, steam line or air line
[image]
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Term
| ELECTRICAL LOCKOUT DEVICES |
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Definition
CIRCUIT BREAKER
[image]
ELECTRICAL PANEL
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Term
| ELECTRICAL LOCKOUT DEVICES |
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Definition
ELECTRIC CORD LOCKOUT
[image]
WALL SWITCH LOCKOUT [image]
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Term
| FLUID AND GAS LOCKOUT DEVICES |
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Definition
HANGLE VALVE LOCKOUT & WHEEL VALVE LOCKOUT
[image] |
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•Used when more than one person doing maintenance or repair on same machine or equipment
•Machinery or equipment can not be started up until all locks are removed
•Each person places and removes their own lock
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