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HL  
#1 Posted : 10 April 2013 11:19:35(UTC)
Rank: New forum user
HL

We have a workshop where there is grinding of mild and stainless steel (for hours) which contains elements of chrome. Could anyone point me towards a useful practical resource I could use to help me establish the risks/safe working practises of this? I can only find long research papers that are not specific.
The powers that be want to bring in steel that is not de-chromed and I don't think we have sufficient procedures in place for this, but need to explore it further before if just arrives one day!

Any help much appreciated.
descarte8  
#2 Posted : 10 April 2013 13:28:16(UTC)
Rank: Super forum user
descarte8

Im not going to jump down your throat and mention the heirarchy on controls and that you should refuse to do the work and not bring the more hazardous materials in, as it is not always practical to avoid higher risk work.

And also becuase we do this type of work all the time, covered by a suitable COSHH assessment, using LEV, supplemented by RPE, controls suffient as justified by dust exposure monitoring (with metal analysis specifically looking for chromium).

We have designated grinding booths with suitable extraction containing the majority of the dusts, but also our guys wear P3 respirators (in fact we use a battery powered hood with a face shield of sufficient strength to protect against the mechanical hazard - TH4).

Becuase of the allergic contact dermamtitis risk, in a ddition to the long term health effects of chromium, health surveilance would be a requirement, although I assume you already undertake this given the nature of your work already done.

Although the chromium may increase the risk of the work you are doing that does not mean you cannot do it safely.

What I would do if I were you is revisit your COSHH, look at the level of control you have, and the protection offered by your RPE. If you have any dust monitoring or exposure monitoring data for your current grinding activities using your currently controls and you know the likely concentration of the worst case chromium content your likely to grind in the future, extrapolate your old results to give you an expected exposure level of chromium. (PM if you need a hand with this).

Or I may have gone off at a tangent and all you needed was:
www.hse.gov.uk/pubns/indg346.pdf - Chromium and you

http://www.hseni.gov.uk/...ngineering_workshops.pdf - Health and Safety in Engineering workshops
Jane Blunt  
#3 Posted : 10 April 2013 13:47:18(UTC)
Rank: Super forum user
Jane Blunt

You might find some useful data in pdf document linked from this page:

http://www.aalco.co.uk/d...tainless-Steels_253.ashx

I don't understand part of your post. At first you say you are grinding mild and stainless steel, but are concerned about the introduction of steel that is not de-chromed?

What do you mean by de-chromed steel?

Stainless steels contain a minimum of 10.5% chromium. However it is Cr(0), and not either Cr(III) or Cr(VI).
HL  
#4 Posted : 15 April 2013 09:56:58(UTC)
Rank: New forum user
HL

Thanks for your feedback. It is all useful for me being new to this industry and the company at present having very little controls in place at the moment.

The 'de-chromed' steel is in reference to the mild steel we work with, but sections that are chrome plated currently gets sent to another company to work on so our employees do not work with chrome plating. However the MD is suggesting our grinding department could do this to save costs.....
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