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#1 Posted : 07 June 2007 08:48:00(UTC)
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Posted By Dean Cross
Morning all,

Apologies if this doesn't make sense, I'm posting this query on behalf of a friend.

The question is, do you have to or does anyone measure the vibration of impact/torque tooling, such as wrenches. This is for the automotive industry, so tightening of wheel nuts etc I imagine.

Any advise greatly appreciated.

Dean

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#2 Posted : 07 June 2007 09:49:00(UTC)
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Posted By Descarte
Yes, but whether I would conduct the monitoring or not would be based on the amount of time that they were using these tools for in an average week and the manufacturers expected exposure ( though this will likely be an under-exstimate) you could then use this as a base for determining whether exposure is likely to come close to or over the occupational exposure limit. If it does it would be worth having the tools properly measured during use by your employees, quite a simple task and not too expensive, last set we had done was less than £500 (Aberdeen area)
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#3 Posted : 07 June 2007 14:05:00(UTC)
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Posted By Ron Hunter
I would suggest that this activity on a production line or in a tyre fitting franchise would present a significant risk and your friend is right to be concerned if this is his work environment. Ocassional use in a vehicle servicing environment (even for large goods vehicles) is generally OK though,as the 'trigger time' is so much less. I'm deliberately not giving you any specific figures as there are just too many variables and as previous posts say, there is no real effective substitute for on-site measurement of the task.
There are some very good resources on the HSE website on this topic.
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#4 Posted : 07 June 2007 17:02:00(UTC)
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Posted By Merv Newman
I do a lot of work with the automotive industry. Cars and HGV.

You would have to measure it and a lot depends on the cycle time - how many times per minute/hour/shift do they have to torque up some nuts.

Fitting wheels on a HGV, for example, is approximately one wheel per minute. Car assembly requires as many nuts as it takes to do what you have to do within 60 seconds. Then do it again. And again. And again. But fitting wheels is mostly automated.

I would be more inclined to look at "Torque-shock" ie the lash-back that happens when the nut is torqued to the set limit.

Just for your information, one accident I witnessed last year was to an operator who was holding the air-driven tool in his right hand and the rotating shaft in his left. (wro-ong !)

His glove wound around the shaft and exploded.

Four fingers dislocated at the base.

Merv
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#5 Posted : 13 June 2007 08:56:00(UTC)
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Posted By Dean Cross
Thanks for your input, which I have passed on.

The company involved are now thinking about switching to DC tooling? What ever that is.
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