ICEM11 Final Program 9.7.11pm_ICEM07 Final Program ... - Events

Session 39 Abstracts
To the current day in Canada, the work of environmental remediation of the radium legacy largely follows the trail of these
individuals, just as in France, a parallel effort follows the trail of Madame Curie. The Low-Level Radioactive Waste Management
Office is the agent of the Canadian government for its responsibilities regarding the work at the affected sites and the management
of the related wastes. The Office operates programs and facilities to…
B-2) MATHEMATICAL MODELING OF REACTIVE TRANSPORT IN GROUNDWATER WITH METALS
AND DISSOLVED ISOTOPES 226RA AND 228RA, USIN, SÃO PAULO, BRAZIL (w/oP-59245)
Rodrigo Raposo de Almeida, Federal Fluminense University; Valter Mortágua, Industrias Nucleares do Brasil;
Felipe Rosa, Luciano Magalhaes, Universidade Federal Fluminense (Brazil)
This paper aims to present the results of the analytical model of transport and the mathematical model of flow and transport of
radionuclides, considering the decay and adsorption of the byproducts. The study area is located in Sao Paulo, the largest city in
Brazil and Latin America with about 11 million inhabitants, and it is a former unit of processing of rare earths which ran between
the years 1960 and 1996 named the Plant Interlagos (USIN). The work focus is on groundwater contamination that occurred inside
Warehouse A. This contamination of soil and groundwater occurred about in 1991 due to a crack and leak from a box of separation
of ammonium chloride containing some dissolved radionuclides. The main source of contamination is no longer active, however
the residual phase in the vadose zone still there as a secondary source of contamination. Monitoring of groundwater is done periodically
since 1992, but only in 2007 a detailed groundwater study was undertaken from the impacted area. This study aimed to
detail the plume of contamination of metals and radionuclide in Warehouse A (Galpão A). With the software 3GEO Bioscreen SI
was developed an analytical model of transportation to establish and calibrate the parameters…
B-3) QUANTIFYING THE RETENTION OF FOAM FORMULATION COMPONENTS TO SEDIMENTARY
PHASES TO ENABLE PREDICTIONS OF MOBILITY AND TREATMENT EFFICACY (w/oP-59369)
Rosa Ramirez, DOE EM; Danielle Jansik, Dawn Wellman, Pacific Northwest National Laboratory (USA)
Deep vadose zone remediation remains the most challenging remediation problem in the DOE Complex. Foam delivery technology
is being developed as a method for delivering remedial amendments within vadose zone environments for in situ contaminant
stabilization. Thus far, the physical propagation of foam within subsurface media has been evaluated and quantified. However,
foam propagation is a product of surfactant sorption which directly impacts foam stability. In order to predict the stability of
foam during subsurface transport it is necessary to quantify the sorption of foam components as a function of concentration, competitive
sorption, sediment mineralogy, and temperature. This investigation provides the results of standard static batch test quantifying
these relationships. High Performance Liquid Chromatography (HPLC) was used to measure surfactant concentrations. The
results of this investigation provide necessary understanding to predict foam stability during subsurface transport and determination
of the remedial radius of influence. This study is part of a multiple step process for demonstrating the feasibility of foam transport
to distribute amendments within in the vadose zone.
B-4) TECHNIQUES OF RADIOACTIVE SOIL PROCESSING AT REHABILITATION
OF CONTAMINATION TERRITORIES. (wP-59199)
Victor Volkov, Alexander Chesnokov, Alexey Danilovich, Yury Zverkov, Sergey Koltyshev,
Sergey Semenov, Anatoly Shisha, RRC Kurchatov Institute (Russia)
Rehabilitation of nuclear- and radiation objects assumes dealing with and removal of considerable volumes of a radioactive
soil. A similar situation was faced at the remediation of such sufficiently large objects, as old radioactive waste storages at the territory
of «Kurchatov Institute» and elimination of consequences of radiation accident at Podolsk plant of nonferrous metals. At
rough estimates the volumes of a radioactive soil at territory of «Kurchatov institute» were 15-20 thousand cub.m, volumes of a
removed soil at carrying out of urgent measures in territory of Kirovo-Chepetsk chemical plant exceeded 20-25 thousand cub.m,
volumes of a low active waste at the territory of Podolsk plant may reach 20 thousand cub.m.
Such considerable volumes demand creation of technologies of their processing, an effective measuring technique of levels of
their contamination and ways of considerable (in times) decrease of their volumes at the expense of decontamination or separation.
Works have been aimed at the decision of these problems at carrying out of rehabilitation of territory «Kurchatov institute». During
works technologies of radiation and water-gravitational separation of a radioactive soil have been offered and are realized in
practice. A facility of water -gravitational separation of the soil was created and used within…
B-5) OPTIMISATION (SAMPLING STRATEGIES AND ANALYTICAL PROCEDURES)
FOR SITE SPECIFIC ENVIRONMENT MONITORING AT THE AREAS OF
URANIUM LEGACY SITES CONTAMINATION CONCERN IN UKRAINE (wP-59045)
Oleg Voitsekhovych, Tatiyana Lavrova, Alexander Kostezh, Ukrainian Hydrometeorological Institute (Ukraine)
There are many sites in the world, where Environment are still under influence of the contamination related to the Uranium
production carried out in past. Author’s experience shows that lack of site characterization data, incomplete or unreliable environment
monitoring studies can significantly limit quality of Safety Assessment procedures and Priority actions analyses needed for
Remediation Planning. During recent decades the analytical laboratories of the many enterprises, currently being responsible for
establishing the site specific environment monitoring program have been significantly improved their technical sampling and analytical
capacities. However, lack of experience in the optimal site specific sampling strategy planning and also not enough experience
in application of the required analytical techniques, such as modern alpha-beta radiometers, gamma and alpha spectrometry
and liquid-scintillation analytical methods application for determination of U-Th series radionuclides in the environment, doesnt
allow to these laboratories to develop and conduct efficiently the monitoring programs as a basis for further Safety Assessment in
decision making procedures. This paper gives some conclusions, which were gained from the experience establishing monitoring
programs in Ukraine and also propose some practical steps on optimization in sampling strategy planning and analytical procedures
to be applied for the area required Safety assessment and justification for its potential remediation and safe management.
106