Abstract
Radiation shielding effect against γ-rays from radioactive noble gas cloud resulting from a major reactor accident was investigated for three typical residential houses in Japan; prefabricated, wooden and ferroconcrete houses. The shielding factors of the houses, the ratio of indoor dose rate to outdoor one, were estimated for the submersion and cylindrical plume trailing overhead, which contain monoenergetic γ-ray sources or γ-emitting noble gas radioactive nuclides. The shielding factors against the noble gas cloud decrease gradually with the release delay time and maintain the minima after 50 hours while 133Xe predominates in the cloud. Neither the mixing of iodine nuclides in the cloud nor the cloud shape affects significantly the shielding factors. Finally the shielding factors for the use of emergency planning were proposed as 0.4 for ferroconcrete residential houses and 0.9 for other ordinary residential ones.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
