PCV issues

[jdavis]

Whilst investigating the source of my persistent oil dribble, I believe I've found the source.
There is a round, hard plastic pipe that goes to the inlet pipe from the side of the block, along with a smaller pipe, this larger pipe is broken(it looks bodged to be fair as the quality of the plastic feels crap). It is the pipe you can see running across the front of the engine and round the side.
I believe this to be part of the pcv system is that right?
Would I be better off replacing the full system and is this a job for a fairly competent DIY mechanic?

Thanks in advance