Looks like a pipe flange, maybe water I'd say. It's a pretty cool shot to be honest. I like it. I also like hearing you say your work is engaging you; that's a good sign. Also, did you see my latest posting contest? I hope you'll get involved; it's an easy one.
Oh yeah, I do like my coffee...now to come up with something clever with coffee.
I'm sure you'll come up with something good. Just have some fun with it I guess.