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The 13th International Conference on Environmental ... - Events

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Abstracts<br />

3) 40292 – GIS-Based Decisi<strong>on</strong> Support System for the Former Semipalatinsk Test Site<br />

Maira Mukusheva, Sergey Baranov, Nati<strong>on</strong>al Nuclear Center (Kazakhstan)<br />

Terminati<strong>on</strong> of the nuclear tests and closure of the Semipalatinsk test site, taking into account the collapsed<br />

ec<strong>on</strong>omy of the former Soviet Uni<strong>on</strong> brought to a situati<strong>on</strong> when a huge area most part of which was c<strong>on</strong>taminated with<br />

radioactive substances became open and unc<strong>on</strong>trolled providing a free access to the test site. Residents from the<br />

neighboring settlements used the opportunity. <str<strong>on</strong>g>The</str<strong>on</strong>g>y did not realize the hazard imposed during live-stock grazing, ferrous<br />

and n<strong>on</strong>-ferrous metal scavenging, dismantling of buildings and structures located at the area. Grazing areas of some<br />

wintering grounds are located close to the nuclear tests areas. People living at the wintering ground and summer pastures,<br />

are occupied with grazing of cattle, sheep stock and drove of horses. Radioactive c<strong>on</strong>taminati<strong>on</strong> of the site is caused by<br />

ground and above-ground nuclear explosi<strong>on</strong>s. In such a situati<strong>on</strong> the main task was evaluati<strong>on</strong> and predicti<strong>on</strong> of<br />

radioecological situati<strong>on</strong>, safety of ec<strong>on</strong>omic activity. Applicati<strong>on</strong> of geographic informati<strong>on</strong>al systems for analysis of<br />

radioecological process at radioactive c<strong>on</strong>taminated nuclear test locati<strong>on</strong>s will make possible to process large amount of<br />

different informati<strong>on</strong> required for soluti<strong>on</strong> of problems related to the rehabilitati<strong>on</strong> of c<strong>on</strong>taminated areas. Efficiency,<br />

possibility to integrate ecological, social, ec<strong>on</strong>omic, and management informati<strong>on</strong> <strong>on</strong> the unified geographic basis and<br />

combinati<strong>on</strong> with mathematic analysis tools, distinguish the geoinformati<strong>on</strong>al systems out of the existing applied<br />

programs. <str<strong>on</strong>g>The</str<strong>on</strong>g> universality determines the attractiveness of their applicati<strong>on</strong> for a wide range of tasks. To evaluate and<br />

predict radioecological situati<strong>on</strong> at the STS, a radioecological m<strong>on</strong>itoring system (REMS) is developed <strong>on</strong> the basis of<br />

GIS-technologies. <str<strong>on</strong>g>The</str<strong>on</strong>g> system is designed to provide informati<strong>on</strong>, methodic and instrument support for preparati<strong>on</strong><br />

processes and management decisi<strong>on</strong> making in ec<strong>on</strong>omic activity at the STS. To check the efficiency of the REMS and<br />

dem<strong>on</strong>strate applicability of GIS-technologies, risks calculati<strong>on</strong> is performed for the STS populati<strong>on</strong> as part of analysis<br />

for c<strong>on</strong>sequences of ecosystems radioactive c<strong>on</strong>taminati<strong>on</strong>. On the basis of analysis for references, field and laboratory<br />

experiments, main ways of pasture ecosystems c<strong>on</strong>taminati<strong>on</strong> at STS are revealed and radi<strong>on</strong>uclides are determined<br />

which make the most c<strong>on</strong>tributi<strong>on</strong> to the additi<strong>on</strong>al radiati<strong>on</strong> exposure to populati<strong>on</strong> carrying <strong>on</strong> ec<strong>on</strong>omic activity in the<br />

regi<strong>on</strong>. Revised is the nature of agricultural producti<strong>on</strong>, schematic maps are c<strong>on</strong>structed for locati<strong>on</strong> of ec<strong>on</strong>omic agents.<br />

Using all available informati<strong>on</strong>, evaluati<strong>on</strong> is carried out for actual c<strong>on</strong>diti<strong>on</strong> and a predicti<strong>on</strong> is made for possible<br />

negative c<strong>on</strong>sequences of radioactive c<strong>on</strong>taminati<strong>on</strong> to the populati<strong>on</strong> of the former STS.<br />

4) 40218 – RFID Technology for Envir<strong>on</strong>mental Remediati<strong>on</strong> and Radioactive Waste Management<br />

Hanchung Tsai, Yung Liu, ANL (USA); James Shuler, US DOE (USA)<br />

We have developed an advanced Radio Frequency IDentificati<strong>on</strong> (RFID) system capable of tracking and m<strong>on</strong>itoring a wide<br />

range of materials and comp<strong>on</strong>ents for the nuclear industry – from fissi<strong>on</strong>able stocks to radioactive wastes. <str<strong>on</strong>g>The</str<strong>on</strong>g> RFID technology has a<br />

number of advantages, such as enhanced safety and security, reduced pers<strong>on</strong>nel exposure to radiati<strong>on</strong>s, and improved inventory c<strong>on</strong>trol.<br />

<str<strong>on</strong>g>The</str<strong>on</strong>g> sensors in the RFID tags m<strong>on</strong>itor the state of health (e.g., temperature, shock, seal, dose, and dose rate) of the item and send out an<br />

alarm instantly when the sensor threshold is violated. N<strong>on</strong>volatile memories in the tag store data from sensors and event records, as<br />

well as manifest informati<strong>on</strong> if so desired. In irradiati<strong>on</strong> tests, the tag electr<strong>on</strong>ics was c<strong>on</strong>firmed to possess significant radiati<strong>on</strong><br />

resistance and, therefore, would yield a satisfactory service life. L<strong>on</strong>g-life batteries and smart management circuitries permit the RFID<br />

tags to operate for up to 10 years without a battery replacement. <str<strong>on</strong>g>The</str<strong>on</strong>g> form factor of the tags can be modified to suit different c<strong>on</strong>tainer<br />

types. <str<strong>on</strong>g>The</str<strong>on</strong>g> read range can be up to 100 m, and no line-of-sight between the tagged items and the interrogator (reader) is necessary.<br />

With careful implementati<strong>on</strong>, even a large-size processing or storage facility with a complex c<strong>on</strong>figurati<strong>on</strong> can be m<strong>on</strong>itored with a<br />

handful of readers in a network. In transportati<strong>on</strong>, by using Global Positi<strong>on</strong>ing System (GPS) and satellite/cellular communicati<strong>on</strong><br />

protocols, the locati<strong>on</strong>s and the c<strong>on</strong>diti<strong>on</strong>s of the tagged c<strong>on</strong>tainers can be c<strong>on</strong>tinuously tracked. <str<strong>on</strong>g>The</str<strong>on</strong>g> RFID system also integrates<br />

Geographic Informati<strong>on</strong> Systems (GIS) technology, which uses informati<strong>on</strong> in preexisting geodatabases to generate and issue reports<br />

instantly to first resp<strong>on</strong>ders for situati<strong>on</strong> recovery in case of incidents. In stand-al<strong>on</strong>e applicati<strong>on</strong>s, the m<strong>on</strong>itoring and tracking data are<br />

c<strong>on</strong>tained within the local c<strong>on</strong>trol computer; with a secure Internet c<strong>on</strong>necti<strong>on</strong>, multiple users can share the data in real time within the<br />

complex or bey<strong>on</strong>d. As with the deployment of any new technology, overcoming the cultural resistance is part of the developmental<br />

process. With a str<strong>on</strong>g instituti<strong>on</strong>al support and multiple c<strong>on</strong>vincing live dem<strong>on</strong>strati<strong>on</strong>s, the cultural resistance has been largely<br />

overcome. As a result, implementati<strong>on</strong> of the RFID technology is taking place at several of U.S. Department of Energy installati<strong>on</strong>s for<br />

processing, storage, and transportati<strong>on</strong> applicati<strong>on</strong>s.<br />

5) 40181 – <str<strong>on</strong>g>The</str<strong>on</strong>g> Radioactivity of 3H in Metals by a High Temperature Furnace and a Liquid Scintillati<strong>on</strong> Counter<br />

Hee Reyoung Kim, Geun Sik Choi, Sang Yun Park, Chang Woo Lee, Mo<strong>on</strong> Hee Han, KAERI (Korea Rep.)<br />

<str<strong>on</strong>g>The</str<strong>on</strong>g> radioactivity of 3H of the metal samples from the nuclear sites was analyzed by using a commercialized high<br />

temperature furnace and a Liquid Scintillati<strong>on</strong> Counter (LSC). <str<strong>on</strong>g>The</str<strong>on</strong>g> 3H activity of the sample was measured according to<br />

the durati<strong>on</strong> of the high temperature combusti<strong>on</strong> and the oxidati<strong>on</strong> temperature. Basically, the recovery from the furnace<br />

was 90% for 3H and the LSC had a quenching efficiency of approximately 30 %. HNO3 was used as a trapping soluti<strong>on</strong><br />

for 3H and the soluti<strong>on</strong> was cocktailed with a scintillator. <str<strong>on</strong>g>The</str<strong>on</strong>g> activity extracted from the sample was increased till the<br />

combusti<strong>on</strong> time elapsed 60 minutes and the increasing rate was reduced c<strong>on</strong>tinuously thereafter at 600 degree in<br />

centigrade whereas 80 % of radioactivity was extracted during the first 15 minutes at 900 degree in centigrade. Also, the<br />

pretreatment for the metal sample, which included a high temperature combusti<strong>on</strong> and trapping, had the time required of<br />

at least four hours at 900 degree in centigrade. Finally, it was suggested that this high temperature combusti<strong>on</strong> method<br />

could be applied to analyze the activity of the radioactive metal waste from the nuclear power plants.<br />

53

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