Abstract
A national survey of indoor levels of terrestrial gamma rays and radon gas is currently under way in the UK. This paper provides a brief description of the survey and some of the requirements for calculating the doses to the population from these sources. One essential requirement is information on indoor occupancy factors. An analysis has been carried out of the most recent published information on people's activities and use of time to derive these factors, both for the population as a whole and for particular groups. The overall indoor occupancy factor is about 90%. The home occupancy factor for the whole population is 75%; that for housewives is 83%. Measurements are being made in the national survey of gamma-ray dose rates and radon as concentrations for the living area and main bedroom. The analysis carried out here has shown that on average 41% of a person's time is spent in the bedroom and the remaining 34% elsewhere in the house, particularly in the living area. As radon gas concentrations vary throughout the day, information on the variation in occupancy factors throughout the day is also required to assess doses. This is provided.
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.
