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Effects of breathing hydrofluoric acid
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#1 Posted : 09 November 2004 13:40:00(UTC)
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Posted By Donald Gillies Does anyone have any experience on this substance, given off when fluorocarbon seals are burned? I am carrying out a COSHH assessment on the risk it poses, specifically when Mechanical Fitters are torch heating (stripping down) assemblies containing seals.
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#2 Posted : 09 November 2004 14:59:00(UTC)
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Posted By Danny Swygart Emailed you direct.
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#3 Posted : 09 November 2004 20:47:00(UTC)
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Posted By Laurie Don't know what Danny has sent you, but I know that this is pretty hairy stuff. It has the property of literally and physically welding skin to an object, which can then only be removed surgically. I know of a couple of cases where people have suffered this fate after handling rubber seals from vehicles and aircraft which have been involved in fires. Sorry I can't help with your original query, but you will need to assess very comprehensively Laurie
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#4 Posted : 10 November 2004 08:21:00(UTC)
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Posted By Kelly Hughes Donald Try this web link. I hope this helps. http://www.chm.bris.ac.uk/safety/hf.htm Regards Kelly
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#5 Posted : 10 November 2004 08:45:00(UTC)
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Posted By Jane Blunt The risk assessment posted is OK, but is restricted because they use solutions of HF. The complete low-down on the medical side of HF can be got from a major manufacturer - look in their 'technical links' for the medical booklet. http://www.honeywell.com...tes/sm/chemicals/hfacid/ They also have MSDSs Jane
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#6 Posted : 10 November 2004 12:43:00(UTC)
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Posted By Neil Pearson HF is a member of an exclusive club of chemicals that are classified as "very toxic". It can be fatal at the right concentrations. Check the exposure standards in EH40 and measure exposure to check it's below those levels.
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#7 Posted : 10 November 2004 12:55:00(UTC)
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Posted By Donald Gillies Thanks to all, I have derived a wealth of information from your posts.
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#8 Posted : 10 November 2004 15:47:00(UTC)
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Posted By John Donaldson There were a number of stories doing the rounds at least 5 years ago on the risks of HF emissions from the accidental burning of seals and from the residual material. The HSE at that time published an article in one of their information bulletins covering the harmful affects. Unfortunately I can not locate the article but your local HSE Inspector may have a copy.
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