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Posted By Mikeh
Would anyone out there know the likely composition of the fumes from running one of these machines. We have a situation where one is to be demonstrated on stage and need to consider what type of LEV to put in place and assess various other risks
Thanks
mike
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Posted By Renny Thomson
I would suspect that the exhaust fumes will still contain Carbon Monoxide as well as PPP10s. Therefore I'd use the same extraction to remove the fumes as for any internal combustion engine. Probably the easiest way will be to directly lead the exhaust to open air or use a powered extraction system as in commercial garages.
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Posted By garyh
Doh! Surely treat it as !!
It must be similar to "normal " diesel or your genny won't work............
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Posted By Mikeh
Thanks Renny. As this is not my normal field can you explain "PPP10's"?
Yeah right gary.. i fully intended to treat as 'normal' diesel. I don't normally use generators on an indoor stage and exhaust obviously needs to be steered out of the building but there is much more to it than that as i'm sure you appreciate.
My concerns were more in the area of possible failue of exhaust system chosen as it will have to be significantly extended. In this situation are people likely to cough and splutter a bit,or keel over stone dead from exposure to some more noxious reaction? Perhaps my post should have been more specific.
I am required to consider all possible outcomes especially when an audience is likely to include a large number of children.
regards mike
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Posted By john r sharp
Mike
A few questions to help to formulate an answer.
Why do you want/ need to use a generator inside a building? Is there an absolute need or requirement for this? What are you powering that requires the generator?
As per other respondents the emissions from the generator are virtualy the same as normal deisel, with perhaps a more pronounced vegetable smell ie hot cooking oil. Particulates and the obvious CO, CO2 plus a few others are the products of combustion that need to be removed. Noise may be another factor that you need to consider.
Regards
John
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Posted By Mikeh
The generator is to be demonstrated in a theatre as a part of a series of lectures to an audience of approx 1500.
I have no information on size at the moment or for how long it will be used. Noise for a short period is not a problem.
We will be extending exhaust system to the outside of the building which means a minimum run of about 20m to get to a suitable 'safe' place away from passing public. My question really is whether this exhaust extract would need some sort of fan to boost the extract or whether it would be able to function happily under its own steam so to speak.
The question about composition relates to concerns expressed by other members of staff likely to be in attendance as to whether they are likely to suffer any sort of short/long term effects. I thought it unlikely given the large space and dilution but i'm not a chemist and would like to give as detailed a response as possible.
I should learn to structure my questions more concisely ;-)
Thanks. Mike
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Posted By GD
Mike, although I have no experience of bio-diesel generators my company uses diesel generators all the time. The machines are used outside but on occasion we do have to extend the exhaust in order to direct fumes away from areas in which people are working. We use flexible alluminium (?) hose supplied by the hire company. One of our exhaust's has been extended by 35m and the fumes tend to disperse quite freely without any assistance from extractors etc. Hope this is of some help.
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Posted By Robert K Lewis
Mike
Like others I am not sure of the precise logic behind the need to see yet another diesel generator working. All you can see is the same as with any other diesel generator so I cannot see a specific benefit that would not be visible in a video clip.
The particulate emission seems to be higher in those bio-diesel engines that I have seen and you may encounter some problems with any smoke detection in the arena. Can your presenter/exhibitor not find a better answer to demonstrate the viability of bio-diesel? If it is essential I would bump the Risk Assessment onto them to prove the safe use - you can then relax back and say no until you are absolutely happy with the arrangements.
Bob
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