We have quarterly reviews (mini reviews really) prior to someone leaving for an inspection trip. Its mainly just to check to see that reports have been written and were sent out, all of the upcoming trip paperwork was done, etc. The paperwork from that (2 pages of stuff) is used in the yearly review where raises are determined.
This is more a function of how our company operated. Our inspectors spend 5 weeks in the field and then 8 weeks at the office. Its sometimes hard to remember what happened between your last two trips as things sorta start blurring together.