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3.2.4.5.2 Enable the device and log in in the "Administrator"
mode.
3.2.4.5.3 Secure the device in the УПГД-3Б carriage so that the
mechanical center of the УПГД-3Б collimator coincides with the
mechanical center of the device, which is indicated on the back
panel.
3.2.4.5.4 Place the УПГД-3Б carriage with the device in a
position where gamma radiation DER from the sources with
radionuclide is equal to
time record the readings of time from the exact time server and feed
the source to the collimator.
3.2.4.5.5 In some time, which is calculated by the formula:
3600
t
t
where
, s - time after which the source is fed into the
д
collimator, read the result of gamma radiation DE measurement with
time readings recording from the exact time server.
3.2.4.5.6 The main relative permissible error of photon-ionizing
DE measurement in percentage shall be calculated by the formula:
H
(
10
)
1
1 ,
where
H
(
10
)
H
0
– main relative permissible error limit of gamma DE of
H
(
10
)
0
УПГД-3Б, calculated by the formula:
H
(
10
)
0
where t
- the limit of the main relative permissible error of the
measurement of the gamma DE exposure time, which must be not
exceed 5%, is calculated by the formula:
H
*
(
10
0
,
t
д
H
(
10
)
H
(
10
0
H
(
10
)
0
– gamma radiation DE of УПГД-3Б;
(
10
)
t
0
2
H
(
10
)
0
=(1.00.1) mSv/h and at the same
)
2
)
H
(
10
)
0
2
,
2
t
80
(3.8)
2
,
(3.10)
137
Cs
(3.9)
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