Many thanks Richard.
-----Original Message-----
From: [log in to unmask] [mailto:[log in to unmask]] On Behalf Of Richard Chalkley
Sent: Thursday, July 24, 2014 5:50 PM
To: [log in to unmask]
Subject: Re: [OCC-HEALTH] particulates
All I can find is this from EH40:
http://www.hse.gov.uk/pubns/priced/eh40.pdf
Dust
44 The COSHH definition of a substance hazardous to health includes dust
of any kind when present at a concentration in air equal to or greater
than 10 mg.m-3 8-hour TWA of inhalable dust or 4 mg.m-3 8-hour TWA of
respirable dust. This means that any dust will be subject to COSHH if
people are exposed above these levels. Some dusts have been assigned
specific WELs and exposure to these must comply with the appropriate limit.
45 Most industrial dusts contain particles of a wide range of sizes. The
behaviour, deposition and fate of any particular particle after entry
into the human respiratory system and the body response that it elicits,
depend on the nature and size of the particle. HSE distinguishes two
size fractions for limit-setting purposes termed
'inhalable' and 'respirable'.
46 Inhalable dust approximates to the fraction of airborne material that
enters the nose and mouth during breathing and is therefore available
for deposition in the respiratory tract. Respirable dust approximates to
the fraction that penetrates to the gas exchange region of the lung.
Fuller definitions and explanatory material are given in MDHS14/3.6
47 Where dusts contain components that have their own assigned WEL, all
the relevant limits should be complied with.
On 24/07/2014 09:50, Ciccone GRANT wrote:
> Dear Colleagues.
>
> Would anyone know if there is any short term exposure limits for
> particulate matter?
>
> Many thanks
>
> **Grant Ciccone RN** **GradCert (OH)** **FRSPH FRSM LCGI**
>
> **Occupational Health Nurse Manager **
>
> **National**** University Hospital**
>
> **Occupational Health Department**
>
> **Level 13, F15, 13b Medicine Clinic NUH Medical Centre, , Singapore
> 119074 ****T:+65 ****9785 6297 **
>
> **E: ****[log in to unmask]**
> <mailto:[log in to unmask]>** ****www.nuh.com.sg**
> <http://www.nuh.com.sg/>
>
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