Presentation - Crane Safety.ppt

7/22/2019 Presentation - Crane Safety.ppt

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Copyright Progressive Business Publications

Crane Accidents

Improper use of cranes can cause:

Property loss

Damage to the

environment

Personnel injury

Death


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5 Steps to Prepare for a Safe Lift

1) Inspect the crane and surrounding area

2) Test limit switches

3) Know the weight of the load

4) Find the center of gravity

5) Rig the load properly


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Inspect the Crane andSurrounding Area

Inspect the crane for defects or missing parts

Look for overhead obstacles

Make sure the crane will not pass over people

Identify all areas the crane or load could hit

Make sure the ground is level and solid


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Test Limit Switches

Move crane to safe area

Test upper and lower limit switches

If any suspected failure:

Stop operation

Turn off the power

Place a lockout tag on the remote control

Notify your supervisor


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Know the Weight of the Load

If the load is too heavy, the crane can tip overor the boom can collapse

Slings on angles canthold as much weightas slings that areperpendicular

500 pounds of

stress on each sling leg

1,000

Pounds

1,000

Pounds

1,000 pounds of

stress on each sling leg


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Find the Center of Gravity

The point at which an object is balanced

A load slung directly above its center of

gravity is more likely to be stable

Suspended objects move so that their center of

gravity is below the equipment that holds it

It may take several attempts at rigging tobalance the load


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Rig the Load Properly

Inspect rigging equipment

Keep attachment point as far above and far

away from the center of gravity as possible

Attach tag lines

Verify rigging by lifting a few inches

Check for loose items


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Slings

Use slings to support the load

Pad sharp edges to protect slings from damage

Inspect all slingsbefore use

Examine labels forrated weight capacity


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Hooks

Examine the label to ensure the hook cansupport the load

Examine hooks for damage

Carry the load oncenter of the

hooks curve

Never rest a hookon the ground


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Safe Operating Procedures

Do not leave suspended loads unattended

Only lift loads vertically

Keep the load close to the ground

Take precautions when wind exceeds 20 mph

Do not distract another crane operator unlessyou want the operator to stop the crane


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Working Near Overhead Wires

Cranes should not be operated near powerlines unless the lines are de-energized

Anti-current devices cant replacedeenergization of power lines

Always treat power lines as if energized

Follow the rules if you contact energized lines


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Hand Signals

Signalman assigned to each lift station

Hand signals used because environment may

be too loud

Stop signals obeyed

at all times

Other signals acceptedonly from one person


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Crane Safety after Use

Move to safe location and place emergencystop switch in off position

Remove load

Return slings and accessories to designated

storage areas

Return crane to upper limit switch


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Summary

5 steps to prepare for a safe lift:

1) Inspect the crane and surrounding area

2) Test limit switches

3) Know the weight of the load

4) Find the center of gravity

5) Rig the load properly

Follow safe operating procedures

Documents

Presentation - Crane Safety.ppt