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Posted By GeoffB4
I've been advised that a 3M8833 (FFP3 standard) mask is required for working with Fly Ash. So far I've not found anything that would suggest anything other than a FFP2 (3M8810) mask is required.
Any related information/suggestions welcome.
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Posted By CSL
You should look at the MSDS which should give you the correct RPE.
It is worth noting that dust from Fly Ash is regarded as an ‘inert dust’ as far as any respiratory effects are concerned.
However, no person should be continuously
exposed to concentrations of respirable dust
exceeding 5mg/m³ of air. The use of suitable face masks and eye protection is therefore highly recommended.
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Posted By D. Hilton
Given that this protection should be provided only in the event that engineering control cannot be provided. FFP2 would seem to be suitable. However, for the small additional cost involved and the lesser face seal leakage value why not go with P3?
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Posted By Paul Leadbetter
CSL
The respirable dust limit has been 4 mg / cu m for some years now.
Paul
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Posted By CSL
US = 5
UK = 4
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Posted By Ron Hunter
With reference to:
http://www.cemex.co.uk/g.../HealthSafety_FlyAsh.pdf
Surely the statement (at the above reference) "may contain small quantities of Chromium VI" gives cause for concern? If this is >2ppm then does the product fall foul of COSHH?
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Posted By GeoffB4
Many thanks for the responses, they have come in very useful.
From the information given, we're currently happy with the P2 and our existing control measures.
Thanks again.
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