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Flash point of dust?

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Keith1983
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Flash point of dust?

Post by Keith1983 » Mon Aug 05, 2019 8:16 am

In one of our processes we grind LDPE granules into powder. during this a fair amount of dust is created. Whilst I can get all the information on the properties of the granules in the condition we buy them in, how would I establish the flash point of the dust so I can do a thorough fire and DSEAR risk assessment?
So when the whole world is safe..............what are we going to do then?

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Messy
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Re: Flash point of dust?

Post by Messy » Mon Aug 05, 2019 8:36 am


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bernicarey
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Re: Flash point of dust?

Post by bernicarey » Mon Aug 05, 2019 8:46 am

I think the problem is that the MSDS give a Flashpoint of the granules as they provide them.

The dust explosion risk is variable dependant on the granule size of the dust, and the amount of it in the air/dust mixture.

It's not the 'Flashpoint' you're seeking; it's the Lower Explosive Limit (LEL) and the Upper Explosive Limit(UEL), of the size of dust you're creating. For example the MSDS that messy has found doesn't give LEL/UEL because the granules don't have one.

I think it needs a Laboratory to assess the size of dust you're creating and to establish the LEL/UELs that exist. :shock:
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Keith1983
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Re: Flash point of dust?

Post by Keith1983 » Mon Aug 05, 2019 10:21 am

You're exactly right, in regards to the LEL / UEL berni! I think I was at the point of not being able to see the forest for the trees, with this one!
So when the whole world is safe..............what are we going to do then?

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Re: Flash point of dust?

Post by bernicarey » Mon Aug 05, 2019 3:45 pm

Keith1983 wrote:
Mon Aug 05, 2019 10:21 am
You're exactly right, in regards to the LEL / UEL berni! I think I was at the point of not being able to see the forest for the trees, with this one!
Have you looked at HSG103?
http://www.hse.gov.uk/pUbns/priced/hsg103.pdf
www.belvoirsafety.co.uk

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