00000nam 2200000za 4500 9.819452 CaOODSP 20221107142949 cr ||||||||||| 160729s2016 oncad ob f000 0 eng d 978-0-660-05672-2 CaOODSP eng n-cn--- H129-65/2016E-PDF Summary report on active soil depressurization (ASD) field study [electronic resource]. Ottawa : Health Canada, 2016. 8 p. : ill. Issued also in French under title: Rapport sommaire de l’étude sur le terrain portant sur la dépressurisation active du sol. Includes bibliographical references. The long-term indoor post-mitigation results indicate that radon levels can be successfully lowered, and maintained, to levels well below the Canadian guideline value using an active soil depressurization (ASD) mitigation system with an indoor mounted fan and side-wall discharge. This further implies that indoor leakage of radon from the system, and re-entry of radon into the home from the exhaust stream, were not issues of concern for the systems tested. As predicted, extreme cold climatic conditions did not cause freeze-up issues or impact the function of the ASD fan or system, as system components were not directly exposed to harsh conditions in the way they may be with the traditional geometry. The alternative, and conveniently less expensive, ASD geometry has been shown to be quite viable. gccst Radiation gccst Housing gccst Safety measures Canada. Health Canada. Rapport sommaire de l'étude sur le terrain portant sur la dépressurisation active du sol (CaOODSP)9.819454 PDF 608 KB https://publications.gc.ca/collections/collection_2016/sc-hc/H129-65-2016-eng.pdf 160070