How to setup work flow for TR or PCN?

Hi Guru's.

We have many error/unprocessed TR's/PCN's in system.

We are currently cleaning up these unwanted TR's/PCN's as a reactive action (once in a year).

But going forward, we want it to prevent from happening again.

***Please suggest some ideas***

I have one idea, if we can set up work flow for error/unprocessed TR's/PCN's (which are older than 3days, lets say.. otherwise for TR's and PCN's, workflow will be triggered)... user will get an automatic notification in his/her inbox.

Is it possible to set up workflow for TR or PCN?

If yes, how to set up? and how to do deadline monitoring for these work items?

And also please suggest if you have any other ideas those can be implemented pro-actively.

Thank you in advance.

Regards,

Srinivas