Doza MKS-15D Snegir Benutzerhandbuch - Seite 14

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Dry cleaning can be performed with any periodicity.

3.3.2.2 Remove the batteries each time before long-term storage of the dosimeter. To do this

proceed as follows:

turn the dosimeter off;

remove the lid of the battery compartment;

take the batteries out of the battery compartment;

review the battery compartment, check condition of terminals, clean contamination in the

battery compartment and remove oxide from terminals;

make sure there is no moist, no spots of salts on the surface of batteries and no damage of

insulation either;

install the lid of the battery compartment.

3.3.3 Periodic maintenance

Periodic maintenance consists of calibration of dosimeter.

4 CALIBRATION ROUTINE

4.1 General reguirements

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 Table 4.1.

Table 4.1 – List of calibration operations

External examination

Testing

Determination of basic relative measurement error of AEDR of photon radiation

Determination of basic relative measurement error of AED of photon radiation

Determination of basic relative measurement error of beta radiation flux density

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

Section

4.5.3, 4.5.4

4.5.5

4.5.4

4.5.3, 4.5.4, 4.5.5

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.

Operation

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

that regulates technical requirements and/or metrological and main technical

Calibration installation UPGD-2M-D, UPGD or equivalent, range of reproduced

-7

AEDR – from 5·10

to 5·10

Set of sources 4SO, range of reproduced beta radiation flux density

-2

from 10 to 10

·min

Stopwatch with measurement range 1 to 3600 seconds

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

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

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

FVKM.412152.005RE

characteristics of the calibration tool

-2

-1

Sv·h

-1

Section

4.5.1

4.5.2

4.5.3

4.5.4

4.5.5