Establishment of analysis methodology for ionizing mattresses using RESRAD-BUILD code
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S. S. Chen
,
J.-H. Yang
Abstract
The methodology of analysing ionizing mattresses using the RESRAD-BUILD code is described. RESRAD-BUILD is a free computer program developed by Argonne US National laboratory. The RESRAD-BUILD code can analyze radiation exposures resulting from occupying a building contaminated with radioactive materials or housing contaminated furniture or equipment. In May 2018, the South Korean government pulled the mattresses of manufacturer Daijin Bed Co from its markets because these mattresses had unsafe radiation levels. After that, the AEC (Atomic Energy Council, Taiwan) had immediately conducted an inspection of ionizing mattresses of Taiwan and found that the radiation level of mattresses of two domestic brands exceed the legal standards. For assessing the dose of the ionizing mattress, it was necessary to establish a methodology for analyzing these in case of nuclear industry unusual products. This was done by using the RESRAD-BUILD code and the data are presented in this manuscript. The analysis results of RESRAD-BUILD were compared with the assessment result to the dose announced by the AEC. The RESRAD-BUILD result which the air exchange rate is 10–2/h is similar with the AEC data. In addition, the results present that the air exchange rate is very significant for calculating the dose.
Kurzfassung
Es wird die Methodik der Analyse von ionisierenden Matratzen unter Verwendung des Codes RESRAD-BUILD beschrieben. RESRAD-BUILD ist ein kostenloses Computerprogramm, das vom Argonne US National Laboratory entwickelt wurde. Der RESRAD-BUILD-Code kann die Strahlenexposition analysieren, die sich aus dem Aufenthalt in einem Gebäude ergibt, das mit radioaktiven Materialien kontaminiert ist oder in dem sich kontaminierte Möbel oder Geräte befinden. Im Mai 2018 zog die südkoreanische Regierung die Matratzen des Herstellers Daijin Bed Co aus dem Verkehr, weil diese Matratzen unsichere Strahlungswerte aufwiesen. Daraufhin hat die AEC (Atomic Energy Council, Taiwan) eine Inspektion von ionisierenden Matratzen in Taiwan durchgeführt und dabei festgestellt, dass die Strahlungswerte von Matratzen zweier inländischer Marken die gesetzlichen Standards überschreiten. Um die Dosis der ionisierenden Matratze zu bewerten, war es not-wendig, eine Methodik für die Analyse dieser bei der Atomindustrie ungewöhnlichen Produkte zu etablieren. Dies wurde mit Hilfe des Codes RESRAD-BUILD durchgeführt und die Daten werden in diesem Manuskript präsentiert. Die Analyseergebnisse von RESRAD-BUILD wurden mit dem von der AEC bekannt gegebenen Abschätzungsergebnis zur Dosis verglichen. Das Ergebnis von RESRAD-BUILD, bei dem die Luftaustauschrate 10–2/h beträgt, stimmt mit den Daten der AEC überein. Darüber hinaus zeigen die Ergebnisse, dass die Luftwechselrate für die Berechnung der Dosis sehr wichtig ist.
References
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© 2021 Walter de Gruyter GmbH, Berlin/Boston, Germany
Artikel in diesem Heft
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- Establishment of analysis methodology of RADTRAD for Maanshan PWR ATWS
- Calendar of Events
- CFD simulation of subcooled boiling flow in PWR 5 ⨯ 5 rod bundle
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- Calculation studies of coated particles performance in sodium-cooled fast reactor
- Effect of using graphene/water based nanofluid on heat transfer in heat exchangers with rotating straight inner tube
- Radiation shielding properties of mortars containing heavyweight particles
- Improvement of the passive efficiency calibration of the segmented gamma scanner
- Investigation of level density parameter dependence for some 233U, 235U, 237U, 239U, 249Cf, 251Cf, 237Pu and 247Cm nuclei in neutron fission cross sections with the incident energy up to 20 MeV
- Establishment of analysis methodology for ionizing mattresses using RESRAD-BUILD code
- Editorial
Artikel in diesem Heft
- Frontmatter
- The simulation research on the natural circulation operation characteristic of FNPP in rolling and inclined condition
- Establishment of analysis methodology of RADTRAD for Maanshan PWR ATWS
- Calendar of Events
- CFD simulation of subcooled boiling flow in PWR 5 ⨯ 5 rod bundle
- Effectiveness assessment of improvement measures in physical protection system monitoring center
- A study on accumulator analysis for the valve performance evaluation system of nuclear power plants
- Calculation studies of coated particles performance in sodium-cooled fast reactor
- Effect of using graphene/water based nanofluid on heat transfer in heat exchangers with rotating straight inner tube
- Radiation shielding properties of mortars containing heavyweight particles
- Improvement of the passive efficiency calibration of the segmented gamma scanner
- Investigation of level density parameter dependence for some 233U, 235U, 237U, 239U, 249Cf, 251Cf, 237Pu and 247Cm nuclei in neutron fission cross sections with the incident energy up to 20 MeV
- Establishment of analysis methodology for ionizing mattresses using RESRAD-BUILD code
- Editorial
