The Second EWGRD Round Robin: Inter Comparison of Gamma Spectrometry Measurements on Activation Dosimeters

Following an initial Round Robin inter-comparison of gamma spectrometry measurements reported in 2014, this paper presents results from the first part a second commissioned by European Working Group on Reactor Dosimetry 2018. Measurements were performed thirteen organisations set irradiated neutron activation detectors representative those commonly used community to measure fluence using methods. The radionuclides measured 110m Ag, 58 Co, 60 54 Mn, and 46 Sc. purpose exercise was demonstrate level consistency between participating blind tests measurements. samples disks iron, nickel, titanium, two standard alloys aluminium, one 1% cobalt other silver. They MARIA reactor operated National Centre for Nuclear Research, Poland. Participants provided their independent referee who collated compared data. are presented anonymised form together with discussion conclusions which may be drawn exercise. Good agreement obtained deviations individual 2.0% ( Mn) 5.6% Co). Overall, latter show less than Robin, is attributed participation wider pool organisations.