タグ「4th Unit of Chernobyl NPP」
Title: Lava-like fuel containing masses of Unit 4 of the Chernobyl nuclear power plant, Physico-chemical properties, the scenario of education, the impact on the environment
Author: Pazuhin, Edward M.
Reference: Chernobyl, 1999
Keywords: 4th block of the Chernobyl nuclear power plant, physical and chemical properties
Abstract: The tasks are: – to classify the Chernobyl lava; – explore the trails of the spread and localized lava-shaped mass of fuel; – examine the physical and chemical properties of LFCM on the macro and micro levels; – estimate the amount of fuel in the lavas; – to assess, to what degree some products of departure in the moment of creation of LFCM and their products of subsequent degradation influence the environment and what is the prognosis of their behavior.
URL:http://www.dissercat.com/content/lavoobraznye-toplivosoderzhashchie-massy-4-go-bloka-chernobolskoi-aes-fiziko-khimicheskie-sv
Title: ASSESSMENT OF THE RADIONUCLIDE COMPOSITION OF “HOT PARTICLES” SAMPLED IN THE CHERNOBYL NUCLEAR POWER PLANT FOURTH REACTOR UNIT
Author: Farfan, E. / Jannik, T. / Marra, J.
Reference: HEALTH PHYSICS JOURNAL, Oct 2011
Keywords: 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; AMERICIUM; BURNUP; CESIUM; CESIUM ISOTOPES; CONFINEMENT; CURIUM; EUROPIUM; NUCLEAR POWER PLANTS; PLUTONIUM; RADIOISOTOPES; SHELTERS
Abstract: Fuel-containing materials sampled from within the Chernobyl Nuclear Power Plant (ChNPP) 4th Reactor Unit Confinement Shelter were spectroscopically studied for gamma and alpha content. Isotopic ratios for cesium, europium, plutonium, americium, and curium were identified and the fuel burnup in these samples was determined. A systematic deviation in the burnup values based on the cesium isotopes, in comparison with other radionuclides, was observed. The conducted studies were the first ever performed to demonstrate the presence of significant quantities of {sup 242}Cm and {sup 243}Cm. It was determined that there was a systematic underestimation of activities of transuranic radionuclides in fuel samples from inside of the ChNPP Confinement Shelter, starting from {sup 241}Am (and going higher), in comparison with the theoretical calculations.
URL: http://www.osti.gov/bridge/product.biblio.jsp?query_id=2&page=0&osti_id=1024191
Title: Nuclear Fuel in the Destroyed 4th Unit of Chernobyl NPP
Author: Volodymyr M. PAVLOVYCH
Reference: Institute for Nuclear Research of the National Academy of Science of Ukraine, Aug 2002
Keywords: nuclear fuel, 4th Unit of Chernobyl NPP
URL: http://www.rri.kyoto-u.ac.jp/NSRG/reports/kr79/kr79pdf/Pavlovych.pdf
Title: Worker Health and Safety Issues in Reinforcing the Entombment of the Chernobyl Reactor
Author: Likhtarev, Illya
Reference: Health Physics: November 2007 – Volume 93 – Issue 5 – pp 480-486
DOI: 10.1097/01.HP.0000279600.49256.e6
Keywords: 4th Unit of Chernobyl NPP, dosimetry data, health state
Abstract: The paper provides an overview of current work involving the strengthening of the Sarcophagus over the Chernobyl Nuclear Power Plant destroyed 4th unit. It includes a brief summary of the types of work being performed, the radiological environment, the medical surveillance program, the protective measures being implemented, and the internal and external radiation monitoring program for the workers. Also, it presents a summary of the workplace monitoring data and the internal and external dosimetry data, and estimates of the total effective doses received by the workers during the work. The primary contribution to worker radiation doses was from external exposure. The maximum total effective doses received are 9.2 mSv mo(-1) and 17.4 mSv y(-1).
URL: http://www.ncbi.nlm.nih.gov/pubmed/18049224?dopt=Abstract
