LB 124 Scint 5. Contamination Measurements
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5. Contamination Measurements
You can start with the contamination measurements immedi-
ately after the initial start-up of the device. When it is turned on,
the device immediately starts measuring and displays the re-
sults according to the preset nuclide and measurement mode or
the background measurement (in case of preselected autostart
function)
Explanations concerning the setting of the parameters and the
application of the different measurement modes can be found in
chapter 6.3.
Please note that the following three operations have to be per-
formed in order to guarantee adequate contamination meas-
urements:
1. After the first start-up of the monitor and later at regular in-
tervals, a functional check should be performed to make
sure that the device works properly. This is also prescribed
in § 67 of the German Radiation Protection Act.
2. Normally, you will first measure the activity caused by the
ambient radiation (= background) to get the pure surface ra-
diation (chapter 5.1.2). During each measurement, this
stored background value is automatically subtracted.
3. Nuclide-specific alert thresholds are entered for the radiation
to be measured; when these thresholds are exceeded, an
acoustic and optical signal is actuated (chapters 5.1.3 and
6.6).
In case that you have already performed these steps, please go
on to chapter 5.2.
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