Application of Spectrometric Gamma-Logging for Specification of Characteristics of Soil Radioactive Pollutions

O. I. Stoianov, M. I. Panasiuk, V. E. Ivanova, G. V. Levin, N. V. Sosonna

Institute for Safety Problems of Nuclear Power Plants, NAS of Ukraine,
36a, Kirova st., Chornobyl, 07270, Ukraine



The experience of using the method of spectrometric gamma-logging of wells for assessment of radioactive contamination of soils on the sites of foundation pits excavation for the New Safe Confinement foundations is presented in the article. Analysis of the photopic/Compton ratio in the gamma-ray spectra of the wellbore allowed us to identify the types of soil contamination: the volumetric contamination, which is associated with real radioactive contamination, and the surface contamination, which is identified as introduced by drilling. This task is especially relevant for determining the boundaries of contaminated/clean soils, which had an impact on determining the depth of pits and, as a result, on the volume of soils to be developed. The use of spectrometric gammalogging of wells made it possible to correctly predict the categories and volumes of radioactive waste, which were soil to be extracted during excavation. Directions for further improvement of the method of spectrometric gamma-logging to clarify the characteristics of radioactive waste are considered in the article.

Keywords: ditches for the foundations of the Arch at the Chornobyl NPP, radioactively contaminated soils, spectrometric gamma-logging of wells, analysis of the photopic/Compton ratio, determination of the boundary contaminated/clean soils.


1. Panasiuk M. I., Skorbun A. D., Litvin I. A. (2010). Radiological studies of soils in pits and wells. North and South tape NSC foundations. Research Report. SIP 09–2–001 NI 03 RPT 008 01. Archive GPM SIP of ChNPP. (in Russ.)

2. Bykov V. T., Golovnya V. Ya., Goncharov K. S., Kuzmenko V. A., Remaev V. V. (1998). [Control of the fuel content in massive samples of highly radioactive waste as to 137Cs gamma-radiation]. Problemy Chornobylia [Problems of Chornobyl], vol. 2, pp. 97−99. (in Russ.)

3. Batiy V. G., Kuzmenko V. A. (2001). [Mathematic modeling of radioactively contaminated grounds inventorying]. Problemy Chornobylia [Problems of Chornobyl], vol. 8, pp. 69−75. (in Russ.)

4. Panasiuk M. I., Pravdiviy O. А., Rudko V. M., Shestopalov V. M. (2001). Results of radio-hydrogeological monitoring in the local area of the Shelter facility and at the ChNPP site. Biuleten ekolohichnoho stanu zony vidchuzhennia ta zony bezumovnoho (oboviazkovoho) vidselennia [Bulletin of the ecological status of the Exclusion Zone and unconditional (compulsory) eviction], vol. 17, pp. 51−56. (in Ukr.)

5. Panasiuk M. I., Skorbun A. D., Pavlyuchenko M. I. (2003). [Use of spectrometric gamma logging for study of contamination spread structure in soils around ChNPP Unit 4]. Problemy Chornobylia [Problems of Chornobyl], vol. 13, pp. 116−119. (in Ukr.)

6. Panasiuk M. I., Skorbun A. D., Pavlyuchenko M. I. (2005). [Using of spectrometric gamma-logging for analysis of radioactive pollution sources of underground environment]. Zbirnyk naukovykh prats Instytutu yadernykh doslidzhen [Proceedings of the Institute of Nuclear Research], vol. 14, no. 1, pp. 144−149. (in Ukr.)

7. Skorbun A. D. (2013). [Scientific base for enhancement of validity of complex estimation of radioecological situation on radioactive contaminated territories (on the example of Shelter object)] (PhD thesis). Chornobyl, 35 p. (in Ukr.)

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