Tom... I'm certain there are several radsafe subscribers who are intimately familiar with NVLAP requirements as regards dosimetry processors. Myself, for one. What are your questions? You can reach me via any of several methods: The RADSAFE forum Directly on Internet JDT4@PGE.COM Phone (805)545-4434, (805)237-9000 Mail: Jack D. Topper TOPPER & ASSOCIATES, INC. P.O. Box 3617 San Luis Obispo, CA 93403