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5.2.7.4.2 Fix the
dosimeter
on
the
phantom
according to item 5.2.7.3 in the УПГД-3Б carriage so
that the mechanical center of the УПГД-3Б collimator
coincides with the mechanical center of the detector.
Take
five
measurements
of
background
DER
H
) in УПГД-3Б with 10 s interval in thirty
(
(
10
)
рфі
minutes after the dosimeter is switched on. Calculate the
average DER value in μSv/h by the formula:
100
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