title: Measurement and calibration of metal and non-metal wastes produced from decommissioning.
abstract: This report described a radioactive waste reference drum which was established with large-area sources and metal slices. This reference drum could be applied in calibration or testing of drum counting systems having 4π counting geometry and being made with plastic scintillators. This metal reference drum has the advantages of easy operation, low natural background and it also has agreeable measurement efficiency calibration curves for the drum counting system as the non-metal reference drum studied previously. On the other hand, this study explored the counting efficiency variations of the drum counting system by simulations of the metal reference drum being filled with wastes up to different heights within the drum. With the exploration, it is feasible to correct the measurement errors caused by different quantities of waste filling.
authors.affiliation: Health Physics Division, Institute of Nuclear Energy Research, No. 1000, Wunhua Rd., Jiaan Village, Longtan Township, Taoyuan County 32546, Taiwan, ROC. Electronic address: chyeh@iner.gov.tw.
authors.forename: Chin-Hsien
authors.initials: CH
authors.lastname: Yeh
authors.affiliation: Health Physics Division, Institute of Nuclear Energy Research, No. 1000, Wunhua Rd., Jiaan Village, Longtan Township, Taoyuan County 32546, Taiwan, ROC.
authors.forename: Ming-Chen
authors.initials: MC
authors.lastname: Yuan
keywords: Large-area source; Radioactive waste; Reference drum