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#1 Posted : 31 August 2006 15:20:00(UTC)
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Posted By Phil Merrison
I have recently been involved in an incident investigation where an operative involved in a small excavation struck his foot with the blade of a jack hammer after it recoiled, at the time he was using the side of his foot as an initial guide to bite into some concrete. I have looked for differant methods of guiding the tool using mechanical means where the foot is not used (we have instructed all contractors to stop this practice)but to no avail, not being heavilly involved in construction and excavation is there anybody out there who has any information on best practice or alternative methods of guding jack hammer blades. Fortunately on this occasion the injured party escaped with only slight bruising, but it could have been much worse.
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#2 Posted : 31 August 2006 15:23:00(UTC)
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Posted By Mat
You can lead a horse to water but you cant make it drink.
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#3 Posted : 01 September 2006 08:56:00(UTC)
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Posted By Bob Shillabeer
Really helpful response Matt!

Phill, have you tried the CITB website (no link i'm afraid)or the HSE site. There is a lot of useful data available free.
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#4 Posted : 01 September 2006 09:59:00(UTC)
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Posted By Bob Youel

Think of the operative = poor environments [cold/wet/ windy/hot/dirty] - bonus as against a decent base pay - poor welfare - in [sometimes] very awkward ergonomic positions

Then think of the client = wants everything for nothing [in most cases]

You may find that the operative cannot undertake work in other than what seems a dangerous way because they have no alternative or they will not obey instructions. Additionally managers [in general] do not want to manage nor tackle a 'Client' hence bad practice is allowed to continue

Note that construction is a roving type of work not fixed

Then put all factors together and thereafter create a case to undertake the work differently [technical-procedure]

Not easy is it
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#5 Posted : 01 September 2006 11:07:00(UTC)
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Posted By Robert K Lewis
The obvious question comes here - Why is the use of hand held pneumatic tools so widespread? Most will provide an operative with the maximum vibration exposure within 30-60 minutes work. If you get your contractors to put some effort into other means of doing the work the problem is reduced. Alternatively they will find a solution to the current problem of using the disposable foot as a guide just to get you of their case.

Bob
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#6 Posted : 01 September 2006 11:33:00(UTC)
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Posted By AlB
Pneumatic jack hammers are so widespread because they're a damnsight easier and quicker to use than pick-axe and shovels, and significantly cheaper than a pneumatic hammer on the front of an excavator or JCB.

This is a tricky situation, but start off by making sure the appropriate footwear is made available. Then look at some engineering solutions, such as an attachable guide that can be fitted to the hammer and keep it steady on the ground (non-slip pads or something similar) so that the hammer does not go dancing around the place when in use.

Not the most useful of replies, but I'll keep an eye out for a solution.
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#7 Posted : 01 September 2006 11:45:00(UTC)
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Posted By Richard Webber
Several years ago I was summoned by my boss following an 'accident' on site. We were working within the grounds of a synthetic fibre factory, internationally renowned for its zero tolerance of accidents.

One of our subcontractors was using a pneumatic breaker to break out some concrete and had got the point stuck in the ground. He was using a second point to release the first and had somehow caught his little finger between them, causing him to swear loudly and his finger nail to blacken.

One of the factory charge hands happened to be passing. He reported the incident, all work was stopped, our manager was contacted and I was summoned and instructed to conduct a full investigation, (mainly for political reasons as none of us felt that the incident warranted any kind of investigation). I was obliged to compile a report with recommendations, copies of which went to the Factory Manager, the Factory safety manager, my boss and the sub-contractor. A tool box talk was devised to impart the collected wisdom to the injured party and all of his colleagues.

The principal findings? Take care not to trap your fingers when using handheld tools! But do you know, I think that the chap had already worked that one out all by himself.

As for your scenario, operatives have been using their feet to start a cut for as long as pneumatic tools have existed. Every day this very operation must occur thousands of times without incident.

We can lose our sense of proportion dont you think?

Richard
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#8 Posted : 01 September 2006 13:00:00(UTC)
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Posted By Advanced Safety
Have seen contractors use a Scaffold board screwed to the concrete as a guide before. Not saying this is acceptable, just an example.
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#9 Posted : 01 September 2006 13:21:00(UTC)
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Posted By Stanley Ikeh
I agreed with Richard in his words. Preventing accident has always been a huge thorught to health and safety advisors. So seing someone doing things that could lead to hurting himself or getting injuried is a huge slap on a face of a safety rep. Doing the right thing safely WITHOUT RUST can do us a real good. Preventive control measure is taking a visual inspection on the moving of the jack hammer, and think about what could go wrong if you do not do it the right way-easy! Tasks must be accomplished in the safest way.Carelessnes led to injury.

Stanley.
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#10 Posted : 01 September 2006 13:47:00(UTC)
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Posted By ian mcnally

Hi Phill,

Interesting one this. I’ve been too many years in construction and have pondered this problem from time to time but have never heard of an injury to the feet. Of course over the last few years we’ve all been focusing on the vibration problem and think we are making progress with this issue.

From my viewpoint any task will have an associated risk and I guess a judgement needs to be taken on what practical solution can be offered to minimise the resultant risk. For the one off small jobs no doubt a responsible contractor will have disccounted the need for a machine mounted pecker and opted to use a hand held machine (low vibration version off course)

Most breakers have farily limited distance of travel and I had always thought the likleyhood of a point or chisel penetrating (correct type of footwear) was quite small. In fact I have never heard of any serious injury being done to the foot (no doub’t this will generate a flood of emails giving examples to the contary) and understood for the most part, that once the point or chisel is engaged the foot can be moved from immediate danger and improve the workers stance.

Whlst well intentioned, I’m not too sure the practicallities of using some type of scaffold board as a guide would be of much help. I am unaware of any purpose made effective guide on the market but always willing to hear ways of improving systems of work.

To sum up, my view would be provided the operative is trained, has suitable PPE and not expected to carry out such work for long periods (machine mounted pecker should be used) then the risk asseessment should be low and therefore the method acceptable.

Had I seen numerous serious injuries then of course I would have no choice but to review the SSW.

Not sure if this helps but may generate some other input

Bset of luck


Ian
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