FLIR identiFINDER R300 - Locating a Radiation Source; Optimum Posture for Neutron Detection

FLIR Detection 3. Field Operating Guide
Figure 67. Optimum posture for neutron detection
For tests involving un-moderated neutron sources, a 30 cm × 30 cm × 15 cm PMMA phantom
(Figure 240, p. 243) or equivalent must be placed between the source and the detector in the
FLIR identiFINDER R300 (Figure 238, p. 241) in order to provide adequate moderation of fast
neutrons and to simulate the ield operation instructions given here.
3.3 Locating a Radiation Source
Once you suspect the presence of a radiation source from observing the environment, you should
use the FLIR identiFINDER R300’s Finder Mode (4.2, p. 88) to determine the exact location of the
source.
Ô
To locate a radiation source…
1. Move the instrument to a low-radiation position for a background measurement.
2. Press
L Finder to switch from Dose Rate Mode to Finder Mode.
3. Wait until the FLIR identiFINDER R300 inishes the background measurement (Figure 68,
p. 74).
If you are in a hurry, you can R Exit the background measurement (not recom-
mended). The instrument will use the most recent background taken after it was
switched on.
4. Move the instrument around to ind the radiation source.
identiFINDER
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