Accession Number : AD0640810


Title :   MEASUREMENT OF TRITIUM SURFACE CONTAMINATION,


Corporate Author : ARMED FORCES RADIOBIOLOGY RESEARCH INST BETHESDA MD


Personal Author(s) : Porter,S. W. ,Jr.


Report Date : JUL 1966


Pagination or Media Count : 21


Abstract : The paper describes several methods and techniques for measuring tritium surface contamination in reactor, accelerator, and tritium oxide environments. The problems associated with the presently used method of windowless flow proportional counting are discussed. A new method of utilizing special membrane swipe papers counted in a liquid scintillation system is described. The data from single channel and channel ratio liquid scintillation counting techniques, various swipe papers and various tritium absorption agents are presented with a statistical analysis. Various factors affecting liquid scintillating counting of inorganic tritium are discussed. This method gives approximately 20 percent efficiency with good statistics versus 1 percent efficiency and very poor counting statistics for flow proportional counting of tritium on swipe papers. From the standpoint of overall counting efficiency, reproducibility of counts, ease of counting, and physical strength, the vinyl membrane VM-1 paper counted in dioxane has been found to be best for general tritium surface contamination measurements. (Author)


Descriptors :   (*TRITIUM, *CONTAMINATION), SURFACES, MEASUREMENT, SCINTILLATION, RADIOACTIVE CONTAMINATION


Subject Categories : RADIOBIOLOGY


Distribution Statement : APPROVED FOR PUBLIC RELEASE