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View Diary: How Regulation came to be: Confined Spaces (48 comments)

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  •  That was the most interesting part of it for me. (8+ / 0-)

    learning the various risks and trying to decide what to include in our training program.  One thing you don't think about until you study it.  For example, how he relative density of a gas influences safety.  One of the situations in Ag we get into is the Oxides of Nitrogen that are produced during the fermentation of silage in a silo.  Most of those gasses have relative densities of over 1 (heavier than air).  NO2 is 1.4. Therefore they collect at the bottom of pits etc.  In concrete stave type silos, during that fermintation, the gasses collect and slide down the chute to the building below.  One of my colleagues tells the story that he went into a silo building right after the silo had been filled and all he remembers is walking through the door. He said he was lucky in that his feet were still sticking out of the building so his grad student grabbed his feet and drug him back out and revivied him.

    In class one time I was talking about it and ask if any of my students had experience with silage.  One of them was from a dairy operation, and said yes he had.  I asked him to describe the gas and what it looked like, which he did, and I'm thinking "teachable moment" so I said, "and what do you do when you see the gas?"

    He replied "we hold our breath and climb through it".

    The students through it was really funny when I started banging my head on the podium.

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