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Hayes Robert; Gadbury, Casey; Goff, Tom
Health Physics: May 2002
Operational Topic: PDF Only

The results of correlating surface removable activity to that measured on a fixed air sampler is reported. It was found from over 40 mean taken during a two week period that surface removable activity from Naturally Occurring Radioactive Material (NORM) can be predicted to be within a factor of 2 or 3 using either a fixed air sampler measurement or even another smear measurement from a specified surface. The method is being used to take credit for background surface removable activity in similar fashion to a background count for any other radiation detector. The utility of this technique is also discussed from an operational health physics perspective for the Waste Isolation Pilot Plant.

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