Question 54Steam Plants - Assistant Engineer

The correct answer is B) blow through the bottom (water) connection first. The reasoning for this is that when blowing down a boiler gage glass, you should always start by blowing through the bottom (water) connection first. This ensures that any sediment or debris in the gage glass is flushed out before blowing through the top (steam) connection. Blowing through the bottom first prevents debris from being pushed up into the gage glass, which could damage or obstruct the glass. The other options are incorrect - A) blowing through the top first is incorrect, C) tightening the packing nuts is unnecessary, and D) the cut-out valve chains should not be disconnected during normal gage glass blowdown procedures.