Rank: Forum user 
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I am conducting a review of our compressed air instalation and use. I have referred to HSG39.
I am looking for something more definitive in terms of guidance with regard to use of "blow guns" and requirement for diffuser or safety tips and/or in line pressure reduction? Although HSG39 discusses these issues briefly, it does not really give anything definitive in terms of what would be a safe/acceptable pressure reduction.
System is standard 80 psi and blow guns are used for clearing small debris from product in the final stages of assembly. Not a good practice I know, but it is likely to be difficult to eradicate.
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Rank: Forum user
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All of our blow guns are fitted with a pressure reducer giving 15psi - The reducer is located well above head height to stop any fiddling and the guns are connected directly - not through a quick release fitting so they can be swapped back to the high pressure line used with air tools.
Many operators claimed low pressure would not clear the vice or coolant, it would slow them down, guns would not work etc. In practise this is simply not true.
Yes it takes more attention by the operator and a bit of gettong used to, but then there is no question of misting oil or coolant into the air and which should not then blow back onto the operator's hands giving you a case of Occupational Dermatitis to report, which will lead to a visit by your local HSE inspector.
As for "safety" tips, these are just standard tips with side holes that let the air out if you happen to put the end against something - does not help at all if you put it in the palm of your hand-
Regards
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Rank: Forum user
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Rank: Forum user
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All helpful stuff - thank You
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