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omidmcdonald

Explosion venting

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I'm in the process of building a new distillery in Ontario, Canada and the issue of explosion venting has come up.  Has anyone encountered this before? Any guidance would be appreciated.

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Are they talking about just keeping the air clean of explosive concentrations or actually directing the explosion somewhere?

Directing an actual explosion sounds complex. We agreed to build a fire/explosion proof wall between the tasting area and the production area. The idea being that in the event of a blast, the customers would have time to flee. The district people didn't seem to care much about the fate of the poor distiller - although, we did wind up build in some extra egress doors - just in case.

Ethanol is a 'temporary explosion' - my favorite phrase. Temporary? But, that's how its classified. In Canada anyway.

Having worked in the gas business for a long time - in the end - concentration is what you are looking out for - which, if your equipment is running properly and under supervision you shouldn't be having a problem with. If you are - you have to revise your approach - after all, you want those fumes in the bottle, not the atmosphere.  

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On 10/19/2017 at 7:02 PM, omidmcdonald said:

I'm in the process of building a new distillery in Ontario, Canada and the issue of explosion venting has come up.  Has anyone encountered this before? Any guidance would be appreciated.

explosions will result from sufficient concentration of ethanol vapor, so air circulation is important to reduce concentration; consider monitors to detect ethanol concentration.  Here is a 2012 discussion on monitors.  . 

 

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Thanks for the feedback. What the inspector wants to know is how much ethanol vapor could be released by a still column if a sight glass or valve broke.  They are concerned about the possibility of this released vapor being ignited before it dissipates by ventilation.  Is there a method of estimating the amount of ethanol vapor in the column (we have a 450mm diameter, 5M tall 19 plate column on a 650L Carl pot)?

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