The Equipment for Testing of Measuring Devices at the Low-level Radon Activity Concentration
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70565813%3A_____%2F19%3AN0000029" target="_blank" >RIV/70565813:_____/19:N0000029 - isvavai.cz</a>
Result on the web
<a href="https://docs.google.com/viewer?a=v&pid=sites&srcid=cmFkb24yMDE5LmN6fHJhZG9uMjAxOXxneDoxZTNlNTRlZmM0MjRiMjdi" target="_blank" >https://docs.google.com/viewer?a=v&pid=sites&srcid=cmFkb24yMDE5LmN6fHJhZG9uMjAxOXxneDoxZTNlNTRlZmM0MjRiMjdi</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
The Equipment for Testing of Measuring Devices at the Low-level Radon Activity Concentration
Original language description
The National Institute for Nuclear, Biological, and Chemical protection has developed under the European project 16ENV10 MetroRADON (European metrology program for innovation and research, EMPIR) the unique equipment for testing of devices at low-level radon activity concentration. The equipment consists of airtight Low-Level Radon Chamber (LLRCH) with an inner volume of 324 liters; flow-through source of Rn-222 type RF 5 with activity 4.955 kBq of Ra-226 which was also developed within the mentioned project by Czech Metrological Institute; and the air pressure bottle as the source of air free from the radon. The mass flow controller of type Bronkhorst EL-Flow is the part of the apparatus and ensures the requested air flow through the radon source to the chamber. The homogeneity of the inner atmosphere in the chamber is ensured by the help of the continuously regulated fan which allows setting up of air flow in the range from 0,1 m/s to 3,5 m/s. The component of the chamber is among other the measuring device of climatic conditions for measuring temperature, air pressure, and relative humidity. The construction of the equipment allows the maintaining of time stable radon activity concentration on the precise level for several days. It is possible to arbitrarily and continuously set up values of radon concentration in the range from 100 Bq.m-3 to 300 Bq.m-3.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
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OECD FORD branch
10304 - Nuclear physics
Result continuities
Project
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Continuities
V - Vyzkumna aktivita podporovana z jinych verejnych zdroju
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů