Olympus BIX III, Руководство пользователя

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10-015490-01EN, Rev. 2, June 2020
Safety Information 29
2. Safety Information
This chapter contains important safety information for using the BTX III analyzer.
2.1 Radiation Safety Information
The fundamental principle in radiation protection is that all radiation exposures
should be maintained as low as reasonably achievable (ALARA). This is referred to as
the ALARA principle. The three key factors which influence an individual’s radiation
dose from a given source are time, distance and shielding. Controlling these factors is
the key to keeping the radiation dose ALARA.
• Time
The most direct way to reduce radiation dose is to reduce the time spent working
with or in the vicinity of radiation sources. If the exposure time is cut in half, the
dose will be reduced by the same fraction.
• Distance
Distance can effectively reduce a radiation dose. When the working distance from
the radiation source is increased by a factor of two, the dose received from that
source is reduced by a factor of four. This is referred to as the inverse square law,
which states that the radiation intensity from a point source decreases by the
square of the distance from the source.
• Shielding
Shielding is any material used to reduce the intensity of radiation by absorbing or
attenuating the radiation coming from the source.