The 2012 International Building Code requires special inspection of firestopping for certain structures. The International Firestop Council has created an in-depth on-line training course for third party firestop inspectors. The on-line course is free (requires 40-60 hours of time), upon completion of the course a certification test is offered ($250 now, $500 after July 31, 2014).
Link to the program --> http://www.firestop.org/inspection.html
The below article announcing the program was recently released on Fire Engineering.