How does one xps around a basement window. It a small 12 X 24 or so slider set in the concrete. I know having xps exposed is a fire hazard, I plan on using 1.5 slotted XPS w/drywall on top or framing against the XPS once up..either way I have to so something with the window. Pictures?

I also have a few pipes that will be in a closet. Behind all but one I can get the 1.5" xps and drywall in place. Behind one 2" pipe I can at best put in a 1/2" piece of XPS in...I would not be able to squeeze drywall in though. To be clear, the pipes are not being framed in since they are in a closet and I may one day need access to them. So you will have the concrete wall, 1.5" XPS, drywall then the exposed pipe. .. except for the one 2" pipe that sits real cose to the wall. Should I just do nothing in back of it or put a 2" strip of 1/2" xps in back....again concerned about fires etc.