Many years ago, I worked as a shift mechanic in a large manufacturing plant. One of my duties was to conduct the shift walkaround. This entailed going to each section of the plant and examining equipment to see that it was in a safe working condition. This meant that if I went into the tank farm where we had a lot of chemical pumps, I would make sure that there were no leaks, no puddles on the floor, and no strange noises.
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