29
Reference alpha sources with
239
Pu radionuclide of the type
4П9, 5П9 or 6П9, with working
surface 40, 100 or 160 cm
2
,
respectively
Flux density from 10 to
5
10
5
min
-1
cm
-2
.
Accuracy of the assembly
calibration no more than ± 6 %
9.8.3.8
9.8.3.8
Reference beta sources with
90
Sr+
90
Y radionuclide of the type
4СО, 5СО or 6СО with working
surface 40, 100 or 160 cm
2
,
respectively
Flux density from 10 to
10
6
min
-1
cm
-2
.
Accuracy of the assembly
calibration no more than ± 6 %
9.8.3.9
9.8.3.9
Verification assembly, creating
collimated neutron field, with
neutron source with first-class
reference neutron Pu-
-Be
radionuclide sources kit
Calibrated by the neutron
radiation DER in the range
from 5
10
-10
to 10
-6
Sv/s.
Accuracy of the reference
sources calibration no more
than 9 %
9.8.3.7
9.8.3.7
Reference spectrometric gamma
sources OSGI 3-2 (
137
Cs,
57
Co)
Accuracy of the reference
sources calibration no more
than 4 %
9.8.3.2,
9.8.3.4
9.8.3.2,
9.8.3.4
Thermometer
Scale interval 1.0
С.
Measurement range 10 - 40
С
9.6.1
9.6.1
Barometer
Scale interval 1.0 kPa.
Measurement range 60 –
120 kPa. Intrinsic error no more
than 0.2 kPa
9.6.1
9.6.1
Hydrometer
Measurement range 30 - 90 %.
Measurement accuracy no
more than ± 5 %
9.6.1
9.6.1
Dosimeter
DER measurement range of
the
external
gamma
background
from
0.1
to
10 μSv/h. Permissible intrinsic
relative measurement error no
more than ± 20 %
9.6.1
9.6.1
9.4 Verification officers qualification requirements
9.4.1 Only persons certified as state verification officers in accordance with established
procedure are allowed to conduct measurements during verification and (or) to analyze measurement
results.
9.5 Safety requirements
9.5.1 Any works with radioactive sources must be done according to state and local safety
instructions for radioactive sources and other ionizing radiation sources valid at the verification site.
The verification process should be considered as work under special conditions.
