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Posted By Andy R
I am looking at writing a vibration management policy for our company. We are an electrical/mechanical installation company and the tools we use are mainly hammer drills, mini grinders, jigsaws and cut off saws. I know I need to be looking at combined trigger times and have used the HSE vibration calculator and looked at the construction confederation and invc websites. However opinions seem to differ on whether or not manufacturers data can be trusted. Obviously we use all the tools on different surfaces i.e a hammer drill could be used on concrete, brick or breezeblock how am I to evaluate all this. Any help would be very much appreciated.
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Posted By Andy R
No one got any ideas
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Posted By Paul Leadbetter
Andy
I attended a HAVS seminar in the Midlands last week at which the speaker (from INVC) stated that manufaturers' data will always be exceeded because standard tests don't duplicate the reality of using the equipment. He suggested doubling manufacturers'data when carrying out an initial assessment to find out whether you might have a problem or not. Where you might have a problem, measurements will be required.
Paul
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Posted By Kevin Paul Clarke
Andy,
We asked the manufacturer to assist us in this matter, they obliged by carrying out vibration assessments (Trigger time assessments) and provided us with an accurate figures to which we could use to identify how long our employees could operate the specific equipment before being exposed to excessive vibration levels. I took these figures further by completing a detailed analysis of trigger times for our employees on a number of different working scenarios (i.e. brick types, property sizes etc). The calculations used were my findings of trigger time and the results given from the manufacturer’s on-site assessments. These are now included into our safe system of work.
The manufacturer’s figures and those results from the onsite assessments differed considerably, so it was beneficial to carry this form of assessment. By solely going by the manufacturers results only give you estimation, and of course they are only bench tested results.
Hope this helps
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Posted By Nick Oxley
I've looked at this and come to the conclusion that there is really only one way to do it. Unfortunately that means setting up a system whereby all vibratory equipment is periodically measured, pretty much like portable appliance testing. All the information kept and maintained. Then somehow try and figure out who has been using it and how long for.
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Posted By Andy R
The problem is, say for example an operative is using a drill they could be using ten different drill bits on a number of substances wood, concrete etc. How can testing record all these differing circumstances. Using the hierarchy of control we can't elimate or substitute and there are no engineering controls available is the best method left open us to use a management control to limit access and therefore trigger time with portable power tools?
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