Doza DROZD Panduan Pengguna - Halaman 8

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4 CALIBRATION ROUTINE

4.1 General requirements

4.1.1 Calibration of a dosimeter is performed in accordance with the IEC 61453:2007.

4.2 Preliminary arrangements

4.2.1 Operations performed during calibration are listed in the Table 4.1.

Table 4.1 – List of calibration operations

1 External examination

2 Testing

3 Determination of basic relative measurement error of AEDR of gamma

radiation

4 Determination of basic relative measurement error of AED of gamma

radiation

4.2.2 Primary and auxiliary tools and equipment necessary for calibration are presented in

the Table 4.2.

Table 4.2 – Primary and auxiliary tools and equipment for calibration

4.5.3, 4.5.4

Calibration installation UPGD-2M-D or equivalent, with

source; range of reproduced AEDR – from 1·10

not more than ±5 %.

4.5.3, 4.5.4

Stopwatch with measurement range 1 to 3600 seconds

4.5.3, 4.5.4

Thermometer with measurement range 0 to 30 °C and scale interval 0.1 °C

4.5.3, 4.5.4

Psychrometer with measurement range 20 to 90 %, error ±6 %

4.5.3, 4.5.4

Barometer with measurement range 60 to 120 kPa and scale interval 1 kPa

N o t e - It is allowed to use other tools and equipment with similar characteristics ensuring determination of

metrological characteristics of dosimeters with required precision.

4.3 Safety precautions

It is necessary to follow safety requirements described in section 3.2 and in documentation

accompanying calibration tools and equipment.

4.4 Conditions

The following normal operating conditions shall be met during calibration:

air temperature ............................................................................ +(20 ±5) °C;

relative air humidity .................................................................. from 30 to 80 %;

atmospheric pressure .............................................................. 86.0 to 106.7 kPa;

natural radiation background ............................................ not more than 0.2 μSv·h

Operation

Name and type (designation) of primary or auxiliary calibration tool, document

that regulates technical requirements and/or metrological and main technical

FVKM.412113.026RE

characteristics of the calibration tool

Section

4.5.1

4.5.2

4.5.3

4.5.4

137

Cs source, with

-5

-2

-1

to 5·10

Sv·h

with uncertainty

137

-1