Transcript 4 lifting.ppt

Lifting with Equipment
During assembly operations it may be necessary to lift or move
heavy equipment. The equipment used to achieve this is covered by
LOLER (Lifting Operations and Lifting Equipment Regulations)
What does LOLER do?
Generally, the Regulations require that lifting equipment Provided for use at work is:
strong and stable enough WLL (working load limit)or SWL (safe working load)
positioned and installed correctly
used safely, ie the work is planned, organised and performed by competent people.
subject to ongoing thorough examination and, where appropriate, inspection by
competent people.
You Must
Ensure that in using any lifting equipment the requirements of LOLER are met. For
example, you should ensure that all lifting equipment is:
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sufficiently strong, stable and suitable for the proposed use.
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positioned or installed to prevent the risk of injury, eg from the equipment or the load
falling or striking people;
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visibly marked with any appropriate information to be taken into account for its safe
use, eg safe working loads. Accessories, eg slings, clamps etc, should be similarly
marked.
You must also ensure that lifting operations are planned, supervised and carried out in a
safe manner by people who are competent
In the workshop you ensure the authorisation to lift form is completed before
attempting to lift or move the load
Inspect
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Inspect all lifting equipment visually
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Ensure all equipment is registered and current
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Check WLL or SWL
Check the Working Load Limit
A general definition of WLL is:
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the maximum LOAD which a product is authorised to support in general service when
the pull is applied in-line
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i.e. the WLL of a component is specified by the manufacturer, and should be clearly
marked on the equipment
Older equipment may be marked with SWL (safe working Load)
Assessing the weight of a load
Before attempting to lift a load it is essential to know the weight of the load. It determines
the capacity of the equipment to be used,
1.
Look to see if the weight is marked on the load. If it is, check to ensure that it is
the weight of all parts of the load; (a machine tool, for example, may not include the
driver motor).
2.
Check the weight stated on any documentation.
3.
Look at the drawing of the load. If the weight is marked,
4.
If the load is still on a trailer or truck, weigh it.
5.
Estimate the weight of the load by using tables of weights.
Estimation of weight
Steel weighs approximately 7800 Kg/M3 use this fact to estimate the weight of:
Steel plate
0.5m
12m
6m
Estimation of weight
Electric motor- diameter of 600mm
700mm
Moving Heavy Loads (shifting)
Always move the load under control keeping a constant look out for people and objects
Levers
Crowbars, pry bars, jemmys ,wrecking bars, pinch bars are some of the terms used
to refer to a metal bar used for lifting or pushing heavy equipment
Lifting with a crowbar
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Ensure the fulcrum point and the point of contact are strong enough to take the force
Use both hands
Use lifting pockets if available
If the gap under the machine is too small, tap steel or hydraulic wedges under the
machine to increase the gap
Lifting Pocket
Pushing with a crowbar
Load
Steel Rollers (minimum of three)
Jacks
Ratchet Toe Jack
Screw Jack
Hydraulic Bottle Jack
Hydraulic Toe Jack
Machine Skates
Skates are small trolleys that
are placed under the load to
allow it to move