Non-Destructive Radiological Decontamination of Building Materials

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70565813%3A_____%2F14%3A%230000550" target="_blank" >RIV/70565813:_____/14:#0000550 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Non-Destructive Radiological Decontamination of Building Materials

Original language description

For nondestructive radiation decontamination of surfaces it is necessary to use varnishes, such as ARGONNE, DG1101, DG1108, etc.. This text evaluates the use of commonly manufactured strippable coatings for radiation decontamination. To evaluate decontamination capability of such coatings following varnishes were selected and subsequently used: AZ 1-700 and AXAL 1807S. The varnishes were tested on the of different building materials surfaces contaminated by the short-term radioisotopes of Na-24 or La-140 in water soluble or water insoluble forms. Decontamination quality was assessed by the decontamination efficiency value, defined as the proportion of removed activity to the applied activity. It was found that the decontamination efficiency of both used varnishes depends not only on the form of contaminant, but in the case of application of AXAL 1807S varnish it also depends on the method of its application on the contaminated surface. The values of the decontamination efficiency for the AZ1-700 varnish range from 46% for decontamination of a soluble form of the radioisotope from concrete surface to 98%, for the decontamination of a soluble form of the radioisotope from ceramic tile surface. The decontamination efficiency values determined for AXAL 1807S varnish range from 48% for decontamination of a soluble form of the radioisotope from concrete surface to 96% for decontamination of an insoluble form of the radioisotope from ceramic tile surface. Comparing these values to the values given for the decontaminating varnishes we can conclude that the AXAL 1807S varnish is possible to use on all materials, except highly porous materials such as plasterboard or breeze blocks or plastic materials. AZ 1-700 varnish can be used for all dry materials without plasterboard.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

JF - Nuclear energy

OECD FORD branch

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Project

<a href="/en/project/VF20112015013" target="_blank" >VF20112015013: Research of modern methods of detection and identification of hazardous CBRN substances and materials, methods of hazard reduction and decontamination; research of modern method for personal protection and elements of critical infrastructure</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů