[en]The vicinity of the Chernobyl Nuclear Power Plant, where happened the most serious nuclear accident seen by mankind a decade ago, renders the opportunity to carry out concrete scientific researches about post conditions of a nuclear accident. To evaluate the radiological situation of a field formally used for agriculture, inside the Exclusion Zone (30 Km zone around Chernobyl Nuclear Power Plant) a field exercise was organized by the Ukrainian Radiation Training Centre. To develop a radiological evaluation of a field it is necessary taking into consideration the nature of the sampling site and what are the tasks to be worked out to accomplish the aims of the evaluation. In a case of evaluation of external dose, measurements of dose rate, gamma flux and beta surface contamination are the principal surveys. The present radioactive contamination in the Exclusion Zone is mostly determined by 137Cs, 90Sr and transuranium radionuclides. It should be noted that on the contaminated area, ten years passing after Chernobyl accident, the dose-rate is formed by 137Cs contamination and beta flux is due to 137Cs + 90Sr. in this report the techniques of measurement dose rate, beta flux and density of contamination of 137Cs have been discussed
Primary SubjectSPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS (C5221)
Secondary SubjectSPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS (C5100)
SourceEuropean Commission (CEC), Brussels (Belgium); International Atomic Energy Agency, Vienna (Austria); World Health Organization, Geneva (Switzerland); 699 p; ISSN 1011-4289; ; Sep 1997; p. 280-288; International conference on one decade after Chernobyl: Summing up the consequences of the accident; Vienna (Austria); 8-12 Apr 1996; 8 refs, 7 figs, 6 tabs.
Country/OrganizationInternational Atomic Energy Agency (IAEA)
Descriptors (DEI)AGRICULTURE, CESIUM 137, CHERNOBYLSK-4 REACTOR, ENVIRONMENTAL EFFECTS, EXTERNAL ZONES, FOOD CHAINS, PLANTS, RADIATION MONITORING, RADIOECOLOGICAL CONCENTRATION, REACTOR ACCIDENTS, STRONTIUM 90
Descriptors (DEC)ACCIDENTS, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, CESIUM ISOTOPES, ECOLOGICAL CONCENTRATION, ENRICHED URANIUM REACTORS, EVEN-EVEN NUCLEI, GRAPHITE MODERATED REACTORS, INTERMEDIATE MASS NUCLEI, ISOTOPES, LWGR TYPE REACTORS, MONITORING, NUCLEI, ODD-EVEN NUCLEI, POWER REACTORS, RADIOISOTOPES, REACTORS, STRONTIUM ISOTOPES, THERMAL REACTORS, WATER COOLED REACTORS, YEARS LIVING RADIOISOTOPES