On 6/17/2011 6:56 PM, Bob Wood wrote: Has anyone done a study of short term continuous monitor testing
vs long term testing?
Bob Wood
Mr Radon
---I did continuous monitoring in our test house for a few
years so results of long term testing can be calculated from it.
Some of the results for a 70 day Winter period are shown in Fig. 1
and 2 of our paper in Health Physics 54:195-202;1988 where closed
windows were maintained. But I was doing tests of different
ventilation conditions during other parts of the year.
---When people speak of an annual test, surely they do not
mean maintaining windows closed and no variation in ventilation
conditions thru the whole year. I made changes in ventilation for my
test house giving changes of a factor of 10 in the radon level. An
annual measurement is more a study of the occupant behavior on
ventilation than of radon behavior, so it is hardly a scientific
study of radon behavior. No wonder that large variations were found
from short term windows closed, constant ventilation measurements.
Bernard L. Cohen
Physics Dept., University of Pittsburgh
Pittsburgh, PA 15260
Tel: (412)624-9245 Fax: (412)624-9163
e-mail: blc@pitt.edu web site: http://www.phyast.pitt.edu/~blc
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From Name
Bernard L. Cohen
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blc@PITT.EDU