Hear new voices of radon-induced lung cancer survival woven throughout the Symposium. Be inspired by how three Keynote Speakers diagnosis and recovery shifted personal passions to an action planBe a part of their plan and take away new tools to increase radon testing and mitigation in your service area.  You will discover new directions for radon policy, emerging technical advances in measurement and mitigation, and cutting-edge radon science and research.  Visit  the  Trade Show featuring radon and business-related companies offering useful and interesting products and services.
Back To Schedule
Tuesday, October 2 • 4:10pm - 4:30pm
Science & Research: Large Decrease Of Radon Concentrations In New-built Swedish Dwellings

Log in to save this to your schedule, view media, leave feedback and see who's attending!

Feedback form is now closed.
Tryggve Rönnqvist
P.O. Box 6522, SE-75138 Uppsala, Sweden
From the analysis of about 100,000 radon measurements in Swedish dwellings stored in the database of Radonova, it has been found that the number of dwellings above the reference level of 200 Bq/m3 (5.4 pCi/l) has decreased a lot for new buildings. The number of single-family houses with building year 2014-2016 with radon levels above the reference level was only about 2 % which can be compared with about 30% for houses built 1950-1980. These data show the importance of good building practice. The development in building technique which can have influenced this improvement will be discussed. Similar data will also be presented for multi-family houses as well as data showing how the radon levels in houses built around 2005 have changed from measurement at that time until now.

avatar for Tryggve Rönnqvist

Tryggve Rönnqvist

Technical Manager, Radonova Laboratories AB
Tryggve Rönnqvist, Ph.D. is the Technical Manager of Radonova Laboratories AB in Sweden. He has more than 20-year experience of radon measurements in a radon laboratory which has analyzed more than 2’500’000 passive radon detectors. Tryggve obtained his PhD in nuclear physics... Read More →

Tuesday October 2, 2018 4:10pm - 4:30pm EDT