EXPOSURE LEVELS OF UKRAINIAN POPULATION IN THE CONTEXT OF AN ACTION PLAN TO REDUCE INDOOR RADON LEVELS

Autor: O Ye Tarasiuk, M V Aksenov, A M Serdiuk, T O Pavlenko, O V Fedorenko, Fryziuk, O V Mykhailenko, A P Operchuk
Rok vydání: 2020
Předmět:
Zdroj: Проблеми радіаційної медицини та радіобіології = Problems of Radiation Medicine and Radiobiology. 25:220-229
ISSN: 2313-4607
2304-8336
DOI: 10.33145/2304-8336-2020-25-220-229
Popis: To analyze and evaluate the available information to indoor radon concentration in the context of theimplementation of the radon action plan.indoor radon-222 in dwellings by area and corresponding radiation risks of the population. Measurements were performed using passive track radonometry. The exposure time of the radonometers is atleast 30 days during heating season. Radiation risk calculations were performed according to the dose coefficientsand mathematical models of the ICRP.It was found that for the whole country, reference level 300 Bq/m3 (radon gas) is exceeded in 16 % ofcases. It was found that geometric mean of radon gas levels was 120 Bq/m3 and varies from 35 to 265 Bq/m3 bydifferent area, namely the difference between radon levels in different territories of the country can be up to 7.5times. Variability of radon levels at the district level is also significant. It was found, radon activity concentrationdiffering by almost 10 times by districts with lognormal distribution and a geometric mean of 75 Bq/m3. The analy-sis of radiation risks of the population has established that estimated annual number of lung cancer deaths due toradon in Ukraine is almost 8,900 cases; and а direct economic loss for the country are estimated at more than $450 million a year.Surveys of radon levels demonstrated significant variation in radon concentrations between different regions. For the whole country, reference level (300 Bq/m3) is exceeded on above 16 % of the dwellings, butpercentage of exceeding varies from 0.1 to 43.0 % by different area. Information on indoor radon concentrationsin almost a third of the country is non-available. For an effective implementation of the Action plan, it makes sense to introduce radon risk mapping.Meta: proanalizuvaty ta otsinyty naiavnu informatsiiu shchodo aktyvnosteĭ radonu v povitri prymishchen' v kontekstirealizatsiï planu diĭ shchodo radonu.Ob’iekt i metody. Ob’iekt doslidzhennia: rivni radonu-222 v povitri zhytlovykh budynkiv riznykh oblasteĭ i vidpovidniradiatsiĭni ryzyky dlia naselennia. Vymiriuvannia provodyly metodom pasyvnoï trekovoï radonometriï. Chas eksponuvannia radonometriv stanovyv ne menshe 30 dib v opaliuval'nyĭ sezon. Rozrakhunky radiatsiĭnykh ryzykiv provodyly za dozovymy koefitsiientamy i matematychnymy modeliamy MKRZ.Rezul'taty. Vstanovleno, shcho referentnyĭ riven' 300 Bk/m3 (radon gaz) v tsilomu po kraïni perevyshcheno u 16 %vypadkiv. Seredn'ogeometrychne znachennia aktyvnosteĭ radonu sklalo 120 Bk/m3 i variiuie vid 35 do 265 Bk/m3 narivni okremykh oblasteĭ, tobto aktyvnosti radonu na riznykh terytoriiakh kraïny mozhut' vidrizniatysia v 7,5 raza.Variabel'nist' aktyvnosti radonu na rivni okremykh raĭoniv oblasteĭ takozh znachna. Vstanovleno, shcho pry lognormal'nomu rozpodili i seredn'ogeometrychnomu znachenni 75 Bk/m3 aktyvnosti radonu vidrizniaiut'sia maĭzhe u10 raziv na rivni okremykh raĭoniv. Analiz radiatsiĭnykh ryzykiv naselennia vstanovyv, shcho prognozna smertnist'vid radonovogo raku legeniv na terytoriï Ukraïny otsiniuiet'sia u maĭzhe 8900 vypadkiv shchorichno, a priami ekonomichni zbytky dlia kraïny – bil'sh nizh 450 mil'ĭoniv dolariv na rik.Vysnovky. Doslidzhennia rivniv radonu vstanovyly znachnu variabel'nist' ĭogo aktyvnosteĭ na rivni okremykh regioniv. Referentnyĭ riven' perevyshcheno u 16 % budynkiv, ale na rivni okremykh oblasteĭ vidsotok perevyshchen' variiuie vid 0,1 do 43,0 %. Informatsiia pro rivni radonu u budynkakh maĭzhe tretyny terytoriï kraïny vidsutnia. Z metoiu efektyvnoï realizatsiï planu diĭ maie sens zaprovadyty zonuvannia terytoriĭ shchodo radononebezpechnosti.
Databáze: OpenAIRE
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