Consistency and efficiency of standard swipe procedures taken on slightly radioactive contaminated metal surfaces

Health Physics
H JungJ D Nurrenbern

Abstract

In radiation work areas, a standard "swipe" procedure is widely used to evaluate the extent of contamination on surfaces. This report documents the variability in results of swipes carried out on various metal surfaces and the variability between different experienced health physics technicians. Also, there is an issue of the efficiency of the first swipe in terms of what fraction of the total absorbed surface contamination is detected by a swipe. The samples used for this study were metal surfaces uniformly exposed in the spent fuel pool of a nuclear power plant The primary surfaces studied were those usually found on spent fuel transportation casks (mainly 304 stainless steel in the U.S.), which are submerged in the spent fuel pools for loading or unloading of the highly radioactive fuel assemblies from nuclear power plants. These surfaces become contaminated with suspended and dissolved radionuclides, primarily 137Cs, 134Cs, and 60Co, in the spent fuel pool. A detailed evaluation was conducted of variations in the swipe measurements made on these metal samples using repeated swipes of the same area by the same technician and comparing swipes of one technician to those of another on similar surfaces. Rough surface finishes sh...Continue Reading

Citations

Jun 13, 2018·Journal of Radiological Protection : Official Journal of the Society for Radiological Protection·Teun van Dillen, Arjan van Dijk
Aug 5, 2010·Health Physics·Miki ShojiNobuo Nemoto
Dec 15, 2004·Health Physics·Kenneth L Miller

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