Corrigendum: Medical management of heavily exposed victims: an experience at the Tokaimura criticality accident (2021 J. Radiol. Prot. 41 S391)

In Akashi and Maekawa [1] an error occurred in figure 7 for “Treatment and clinical course of bone marrow of Worker B”. In this panel, the solid line showed the number of white blood cells, and the dot line presented the number of neutrophils. This figure was reprinted by permission from Ref [2] Springer Nature Copyright © 2002, Macmillan Publishers Limited. The line for the number of neutrophils was incorrect. A corrected version of the original figure 7 is given here in the figure 7. The correction here does not affect the major conclusions and the figure legend of the paper.References[1] Akashi M and Maekawa K 2021 J. Radiol. Prot. 41 S391–S405 10.1088/1361-6498/ac270d.[2] Nagayama H et al 2002 Bone Marrow Transplant. 29 197–204 10.1038/sj.bmt.1703356

CALCULATION OF CONVERSION COEFFICIENTS FOR VOXELIZED PHANTOMS FOR CRITICALITY ACCIDENT DOSIMETRY

In the event of a criticality accident, not only the maximal doses received by the victims must be determined but it is also crucial to evaluate the doses to the different organs. With a neutron component, morphology is a key parameter in the organ dose calculation. As the simulation tools can be time consuming to proceed, especially if morphology is taken into account, for all the victims, it may be very useful to have a database of conversion coefficients that allow to obtain the organ doses from the dose measured in the dosemeter for different kinds of morphology. In this paper, we present a study performed to evaluate such conversion coefficients using voxelized anthropomorphic phantoms. These coefficients take into account two crucial parameters having an impact on the dose at the organs: the orientation of the victim in the radiation field and the morphology, that is to say the body mass index of the different victims.

Development of Criticality Accident Alarm System to Ensure Safe Retrieval of Spent Nuclear Fuel from Lepse Floating Maintenance Base

The paper presents basic results of development of a criticality accident alarm system to ensure safe retrieval of the spent nuclear fuel from the Lepse Floating Maintenance Base. The key features and engineering aspects of the system design are described. Locations of criticality detector units and selected alarm level settings are justified, hazardous area boundaries were identified, and parameters to identify inadequately protected zones were calculated. The SRKS-01D criticality accident alarm system by SPC “Doza” was selected as base equipment. The system was commissioned in 2019 and has been successfully operated for more than 6 months.