Journal Article

QA programme for radon and its short-lived progeny measuring instruments in NRPI Prague

K. Jílek, J. Thomas and M. Brabec

in Radiation Protection Dosimetry

Volume 130, issue 1, pages 43-47
Published in print June 2008 | ISSN: 0144-8420
Published online April 2008 | e-ISSN: 1742-3406 | DOI: https://dx.doi.org/10.1093/rpd/ncn113
QA programme for radon and its short-lived progeny measuring instruments in NRPI Prague

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To subserve the institutional research and tasks coming out from the Czech National Radon Programme, a new QA programme to calibrate all the known types of devices that measure radon and its short-lived progeny was developed at the Department of Radon mobile group of the National Radiation Protection Institute (NRPI) at Prague. The programme also included calibration of instruments measuring a unique quantity of unattached and attached fractions of short- lived radon progeny Generally, NRPI declares estimation of radon concentration during all routine calibration measurements with an overall uncertainty <5% (one sigma) and of equilibrium-equivalent radon concentration with an overall uncertainty <10% (one sigma). The results of the comparative measurements of the unattached and attached fractions of each short-lived radon progeny carried out with a comparing continuous monitor Fritra 4 in the German reference radon chamber at PTB Braunschweig indicated an acceptable level of agreement, up to 10%.

Journal Article.  2660 words.  Illustrated.

Subjects: Nuclear Chemistry, Photochemistry, and Radiation

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