Some results of tritium researches of natural waters in Russia (1960–2010)

Soyfer, V. N.; Goryachev, V. A.; Vakulovsky, S. M.; Katrich, I. Yu.

doi:10.1051/radiopro/20116467s

Cited by 2 publications

(8 citation statements)

References 2 publications

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“…To improve a proportional method of HTO measurement the complex (the proportional counter with working volume 4 l and powerful three-layer protection -15 T) has been created. In tritium window the background was lowered to 32.5 cpm., work of the basic counter with anticoincidence reduced a background to 1.96 cpm [1]. Comparison of installations of POI parameters with ones of the best installations in our country and abroad resulted in Table 1.…”

Section: Development a Low-level Background Ship And Stationary Tritimentioning

confidence: 86%

“…Regeneration of enriched sample by the original for this purpose developed technique was spent. [1]. It consisted in S356 RADIOPROTECTION Table 1.…”

Section: Laboratory Installation For Large-scale Tritium Measurementsmentioning

confidence: 99%

“…Comparison of installations of POI parameters with ones of the best installations in our country and abroad resulted in Table 1. A limit direct (without enrichment) detection 3 H at routine measurements taking into account all errors C min = 2.5 TU [1][2][3][4].…”

Section: Development a Low-level Background Ship And Stationary Tritimentioning

confidence: 99%

“…There is now a possibility to show consecutive development of authors works begun in "cold" war for the monitoring HTO and others radionuclide's, released at nuclear-weapon tests [1]. There was a necessity of expansion a network of points for sampling an atmospheric precipitation and aerosols and creation of the measuring centers for the analysis of samples delivered.…”

Section: Introductionmentioning

confidence: 99%

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Some results of tritium researches of natural waters in Russia (1960–2010)

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Abstract.Original data of tritium ( 1 H 3 HO, or HTO) studying of both natural, and artificial (technogenic) origin in natural waters on the country territory and in the seas of the World Ocean are presented. Entry sources of cosmogenic and technogenic HTO in hydrosphere of the Earth from atmosphere and its carrying over to various links of hydrological cycle are considered. The basic laws of the spacetemporal HTO distribution in surface water of the northern part of the Eurasian continent, in the seas washing Russia and in separate water areas of the World Ocean, and also in atmospheric precipitation and Antarctica's firn snow are studied. Prevailing influence of a molecular exchange on the HTO content in the top layer of lakes, the seas and oceans and in atmospheric moisture over the ocean is shown. The theory of a multicomponent isotope balance method is developed for studying of dynamic characteristics of water objects. Priority results of tritium use in the industry (on oil deposits, collieries, mines etc.) and in researches under national and international programs (WESTPAK, SOUTHERN OCEAN, "Isotopes in deposits", the Soviet Arctic and Antarctic expeditions) are given. Systems of national and Far East regional monitoring HTO pollution of natural waters are created. Complexes for HTO measuring with record levels of threshold sensitivity (in the late seventies sensitivity of complex POI equaled to 4 × 10 −6 Bq/ml) have been developed.

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Section: Development a Low-level Background Ship And Stationary Tritimentioning

confidence: 86%

“…Regeneration of enriched sample by the original for this purpose developed technique was spent. [1]. It consisted in S356 RADIOPROTECTION Table 1.…”

Section: Laboratory Installation For Large-scale Tritium Measurementsmentioning

confidence: 99%

Section: Development a Low-level Background Ship And Stationary Tritimentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Some results of tritium researches of natural waters in Russia (1960–2010)

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“…Use of tritium as a qualitative tracer in oceanology and hydrology of land waters is widely known (see for example [5]). Investigations of the process of its release to the environment are rather limited.…”

Section: Introductionmentioning

confidence: 99%

The new results of experimental studies of fission products release from spent nuclear fuel of the icebreaker “Lenin” reactor dumped in the Kara Sea

et al. 2011

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Abstract. The new technologies were developed for spent nuclear fuel (SNF) condition operative monitoring and search for the lost objects with SNF at the sea bottom using Kr-85. The new paradigm of sea radioecology based on extensive research was proposed. The investigations include a preliminary experimental study of kinetics of fission products (Kr-85 and Cs-137) release from SNF, a subsequent expedition to the Arctic, as well as modeling radionuclides transfer in a near-bottom layer by means of fractal formalism using hydrological data on the expedition area [1,2]. Series of original experimental studies on Kr-85 and Cs-137 release from SNF during corrosion in sea water were conducted in 2002-2010. Time dependence of fission products (FP) release was measured in laboratory under conditions typical of a near-bottom water layer in the Novaya Zemlya Basin. Another important result was received during the expedition to the Arctic in the fall of 2000. The H-3 anomaly was recognized in the surface layer of the Kara Sea in the Novaya Zemlya Basin (228 ± 9.1 TU vs.10-15 TU in the Arctic on average!). This anomaly is located 100 miles south from the dumped reactor of atomic icebreaker "Lenin". So it can be caused by SNF from the reactors of icebreaker "Lenin" or nuclear submarine K-140. EXPERIMENTAL STUDY ON KINETICS OF FISSION PRODUCTS RELEASE IntroductionThe objects with unloaded spent nuclear fuel (SNF) at the sea bottom may cause environmental pollution (for example, in the Arctic) when protective barriers of the SNF assembly are untight. This problem remains the main scientific problem of marine radioecology. At present, methods of episodic radioecological monitoring and numerical simulation cannot give reliable estimates of the radioactive contamination level of the seabed and determine the radiation dose. There is no method available for determination of the beginning of fission products (FP) mass release from SNF to sea water when protective barriers are destroyed. There is the lack of knowledge for time dependence of the processes that influence on SNF safety at the sea bottom is important. The new approach to the problem was developed. It allows to give a conservative estimation of risk of the accident and possible effects on natural and anthropogenic environment in sites of catastrophe and dumping regions of nuclear objects with SNF. Results of the experimental research of FP (Kr-85 and Cs-137) release from the spent oxide nuclear fuel during interaction with sea water are presented. Experimental conditions simulate a zone in dumping regions of nuclear reactors cores. perimental studies on krypton-85 and cesium-137 release from spent nuclear fuelSeries of experimental studies on time dependence of Kr-85 and Cs-137 release from SNF during corrosion in sea water were carried out in NRC "Kurchatov Institute" in 2002.

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Some results of tritium researches of natural waters in Russia (1960–2010)

Cited by 2 publications

References 2 publications

Some results of tritium researches of natural waters in Russia (1960–2010)

Some results of tritium researches of natural waters in Russia (1960–2010)

The new results of experimental studies of fission products release from spent nuclear fuel of the icebreaker “Lenin” reactor dumped in the Kara Sea

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