Published September 2001
| Version v1
Journal article
Reduction of 220Rn exhalation rate of interior wall of concrete building by depressurization
- 1. Department of Physics, The Unviersity of Hong Kong, Hong Kong (China)
Description
A special laboratory was built for the research on 222Rn and 220Rn mitigation by depressurization of concrete wall of high-rise buildings in Hong Kong. Reduction of 222Rn and 220Rn exhalation rate from concrete wall was studied by embedding tunnels in a concrete wall and pumping away the 222Rn and 220Rn in the wall. The reduction in exhalation rate was quantified against the applied depressurization and the distance from the pumping tunnel. 220Rn exhalation rate was measured by passive and integration 220Rn dosimeters with absorber. Results show that 220Rn exhalation rate from concrete wall can be reduced by applying depressurization, but the effectiveness is lower than that of 222Rn
Additional details
Publishing Information
- Journal Title
- Radiation Protection (Taiyuan)
- Journal Volume
- 21
- Journal Issue
- 5
- Journal Page Range
- p. 304-308
- ISSN
- 1000-8187
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 33010939
- Subject category
- S54: ENVIRONMENTAL SCIENCES; S61: RADIATION PROTECTION AND DOSIMETRY;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- BUILDINGS; CALCULATION METHODS; CONCRETES; DEPRESSURIZATION SYSTEMS; DOSEMETERS; EXHALATION; EXPERIMENTAL DATA; HONG KONG; LABORATORY SYSTEM; MEASURING METHODS; RADON 220; RADON 222; SURFACES; WALLS
- Descriptors DEC
- ALPHA DECAY RADIOISOTOPES; ASIA; BUILDING MATERIALS; CLEARANCE; DATA; DAYS LIVING RADIOISOTOPES; EVEN-EVEN NUCLEI; EXCRETION; HEAVY NUCLEI; INFORMATION; ISOTOPES; MATERIALS; MEASURING INSTRUMENTS; NUCLEI; NUMERICAL DATA; RADIOISOTOPES; RADON ISOTOPES; SECONDS LIVING RADIOISOTOPES