The CdZnTe Detector with Slit Collimator for Measure Distribution of the Specific Activity Radionuclide in the Ground-Reference-Cited by-同舟云学术

The CdZnTe Detector with Slit Collimator for Measure Distribution of the Specific Activity Radionuclide in the Ground

Published:2018 Issue: Volume:170 Page:06005
ISSN:2100-014X
Container-title:EPJ Web of Conferences
language:
Short-container-title:EPJ Web Conf.

Author:

Stepanov V.E.,Volkovich A.G.,Potapov V.N.,Semin I.A.,Stepanov A.V.,Simirskii Iu.N.

Abstract

From 2011 in the NRC "Kurchatov Institute" carry out the dismantling of the MR multiloop research reactor. Now the reactor and all technological equipment in the premises of the reactor were dismantled. Now the measurements of radioactive contamination in the reactor premises are made. The most contaminated parts of premises - floor and the ground beneath it. To measure the distribution of specific activity in the ground the CdZnTe detector (volume 500MM3) was used. Detector placed in a lead shielding with a slit collimation hole. The upper part of shielding is made movable to close and open the slit of the collimator. At each point two measurements carried out: with open and closed collimator. The software for determination specific activity of radionuclides in ground was developed. The mathematical model of spectrometric system based on the Monte-Carlo method. Measurements of specific activity of ground were made. Using the results of measurements the thickness of the removed layer of ground and the amount of radioactive waste were calculated.

Publisher

EDP Sciences

Link

https://www.epj-conferences.org/10.1051/epjconf/201817006005/pdf

Reference9 articles.

1. Preparations for decommissioning the MR research reactor at the Russian Science Center Kurchatov institute

2. Particularities of the Dismantling of the Intra-Vessel Structures of the RFT Reactor

3. Chesnokov Alexander, Ivanov Oleg, Kolyadin Vyacheslav et al. ”HLRW management during MR reactor decommissioning in NRC “Kurchanjv insninute”, ICEM’13 Conference Proceedings - 96046, Brussels, Belgium, September 8 – 12, 2013.

4. Remote-controlled collimated γ-ray detector for measuring radioactive contamination

5. Ivanov O.P., Danilovich A.S., Stepanov V. E. et al., “Experience of application of new remote controlled instruments for scanning of distribution of radioactive contamination in rooms with high dose rate”, ICEM’11 Conference Proceedings - 59354, Reims, France, September 25 – 29, 2011