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September 2013

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Subject:
From:
Victor Hernandez <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, [log in to unmask]
Date:
Wed, 4 Sep 2013 13:09:23 -0500
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That's a lot of outgas!!!!!!!!!!

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Douglas Pauls
Sent: Wednesday, September 04, 2013 12:28 PM
To: [log in to unmask]
Subject: Re: [TN] PWB Baking oven

Especially on the days the cafeteria serves the bean burritos.

Doug Pauls

From:   "Stadem, Richard D." <[log in to unmask]>
To:     <[log in to unmask]>
Date:   09/04/2013 12:02 PM
Subject:        Re: [TN] PWB Baking oven
Sent by:        TechNet <[log in to unmask]>

Our biggest complaint is stinky air from process engineers.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Douglas Pauls
Sent: Wednesday, September 04, 2013 11:49 AM
To: [log in to unmask]
Subject: Re: [TN] PWB Baking oven

Victor.

It depends.  What are you baking?  If you are only baking out moisture, then nothing.  Closing the vent may give you greater consistency of temperature over the interior workspace.

But, if you are curing adhesives, or drying/curing anything with flammable vapors, you have two issues:  flammability/chamber-go-boom, and exhausting foul smelling gasses into the general work space.  Both are OSHA issues.

In the case of flammable vapors, the build up of vapors with the vents closed may bring to to the lower explosive limit (LEL) and you have a danger of explosion.  That is why most coating vendors recommend using a class A (explosion proof) oven for curing coatings with flammable vapors.

I know that in our facilities, the most common complaint made to our ES&H folks is stinky air from process chemicals.

Doug Pauls

From:   Victor Hernandez <[log in to unmask]>
To:     <[log in to unmask]>
Date:   09/04/2013 11:43 AM
Subject:        [TN] PWB Baking oven
Sent by:        TechNet <[log in to unmask]>

Fellow TechNetters:

   Are PWB baking oven vented, port, to the surrounding ambient space?
What can happen if the vents ports are closed?

Victor,

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