ECOTEST MKS-UM Operating Manual page 102

3.2.5 The safety precautions given in 2.2.1 of this OM must be followed during
verification.
3.2.6 Verification conditions
The verification shall be carried out under the following conditions:
- ambient temperature should be within (20 ±5) 0C;
- relative humidity should be from 30 to 80%;
- atmospheric pressure should be from 86 to 106.7 kPa;
- natural background level of gamma radiation shall not exceed 0.30 µSv/h;
- battery should be fully charged, the battery voltage should be at least 4.0 V.
3.2.7 Perform an external examination of the dosimeter.
3.2.7.1. During external examination the dosimeter should meet the following
requirements:
- the delivery kit should meet the requirements of Table 1.4;
- labeling should be accurate;
- QCD seals should not be violated;
- the dosimeter should be free from mechanical damage that may affect its
performance.
3.2.7.2 If the delivery kit does not comply with the requirements of Table 1.4,
the verification shall be stopped until the dosimeter is completed.
3.2.7.3 If the requirements of labeling, sealing are not satisfied and if there are
mechanical damages on the dosimeter's surface affecting its performance, the
dosimeter shall not be verified and shall be sent for repair.
3.2.8 Check the dosimeter's performace in all measurement modes in
accordance with the procedure described in section 2.3.6.
3.2.8.1 If the dosimeter malfunctions in at least one mode, it shall not be verified
and shall be sent for repair.
3.2.9 Control of the main relative permissible error limit while measuring
photon-ionizing radiation DER is done as follows:
3.2.9.1 Switch the control panel to the mode of photon-ionizing radiation DER
measurement. Program the threshold levels of DER and DE with zero values, the
specified limit of statistical deviations - 3%.
3.2.9.2 Secure the control unit on the carriage of the УПГД-3B gamma ray
standard equipment (hereinafter referred to as УПГД-3B unit) so that the mechanical
center of the УПГД-3B collimator coincides with the mechanical center of the
detector marked with "+" symbol.
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