ECOTEST DoseG User manual

EPD-27
ELECTRONIC PERSONAL
DOSIMETER
Operating Manual
ВІСТ.412118.046-01 НЕ

1
CONTENTS
1 DESCRIPTION AND OPERATION ........6
1.1 PURPOSE OF USE OF THE DOSIMETER........6
1.2 TECHNICAL SPECIFICATIONS....................9
1.3 DELIVERY KIT OF THE DOSIMETERS .......30
1.4DOSIMETER’SDESIGNANDPRINCIPLEOF
OPERATION ...................................................34
1.5 LABELING AND SEALING ........................49
1.6 PACKAGING ...........................................51
2 PROPER USE..........................................52
2.1 OPERATING LIMITATIONS.......................52

2
2.2 PREPARATION OF THE DOSIMETER FOR
OPERATION ..................................................52
2.3 USE OF THE DOSIMETER .........................60
3 TECHNICAL MAINTENANCE...........107
3.1 TECHNICAL MAINTENANCE OF THE
DOSIMETER ................................................107
3.2 VERIFICATION OF THE DOSIMETER.......115
4 CERTIFICATE OF ACCEPTANCE.....143
5 PACKING CERTIFICATE ...................144
6 WARRANTY ........................................145
7 REPAIR.................................................147

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8 STORAGE.............................................150
9 TRANSPORTATION............................152
10 DISPOSAL ..........................................155
ANNEX А.................................................156
ANNEX B.................................................157
ANNEX C.................................................158
ANNEX D.................................................159
ANNEX E.................................................163
ANNEX F .................................................165

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This operating manual (OM) is intended to
give insights into the principle of operation of
the EPD-27 "DoseG", EPD-27 "DoseGX"
Electronic Personal Dosimeters, their proce-
dure of operation, and contains all the infor-
mation necessary for comprehensive utiliza-
tion of their technical capabilities and their
proper use.
The following abbreviations and designa-
tions are used in the OM:

5
DE - individual dose equivalent;
DER - individual dose equivalent rate;
UAS - unified access station from the kit of
SHS(u)ASIDC;
SHS(u)ASIDC - software and hardware
suite (unified) of the automated sys-
tems of individual dosimetry control
of personnel;
SCD - storage and charging device;
SAA - strict access area;
LCD - liquid crystal display.

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1 DESCRIPTION AND OPERATION
1.1 Purpose of use of the dosimeter
Electronic personal dosimeters EPD-27
are made in two modifications (see Table 1.1):
Table 1.1
Designation
Code
ВІСТ.412118.043-01
EPD-27 "DoseG"
ВІСТ.412118.043-03
EPD-27 "DoseGХ"

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EPD-27 "DoseG", EPD-27 "DoseGX"
Electronic Personal Dosimeters are designed
for use as part of an automated system of indi-
vidual dosimetry control and a stand-alone use
in order to:
- measure the individual dose equivalent
)10(
p
H
(DE) of gamma and X-ray radia-
tion;

8
- measure the individual dose equivalent rate
)10(
p
H

(DER)ofgammaandX-rayradiation
(hereinafter –photon ionizing radiation);
- monitor the duration of stay of the person-
nel in the area under control;
- managing an automated database of radia-
tionburden onpersonnel within the software and
hardware suite(unified) ofthe automated system
of individual dosimetry control of personnel.

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The Electronic Personal Dosimeter
"DoseG" (EPD-27 "DoseGX") (hereinafter –
the dosimeter) can be used at nuclear power
plants, in medicine, industry, radiological la-
boratories and institutions that deal with
sources of photon ionizing radiation.
The dosimeter meets the requirements of
the international standard IEC 61526:2005.
1.2 Technical Specifications
1.2.1 Key technical data and specifications
are given in Table 1.2 and Table 1.3.

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Table 1.2
Name
Unit of
meas-
ure
Standardized val-
ues according to
Specifications
1
2
3
Measurement range of
photon ionizing radia-
tion DE
μSv
1 –107
Display range of pho-
ton ionizing radiation
DE
μSv
0.1 –107

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Table1.2 (continued)
1
2
3
Measurement range
of photon ionizing
radiation DER
μSv/h
10 –107
Display range of
photon ionizing ra-
diation DER
μSv/h
1 –107
when DER is less
than 1 μSv/h, the
"Lo" symbol is dis-
played on the do-
simeter’s LCD

12
Table1.2 (continued)
1
2
3
Main relativepermissibleerrorlimitofDE
measurementat137Cscalibrationwith0.95
confidenceprobability, not morethan
%
15
Main relativepermissible errorlimitof
DERmeasurementinpercentage at137Cs
calibrationwith 0.95confidence probabil-
ity, notmorethan
-within 10 μSv/h to 1 mSv/h:
-within1 mSv/hto10sV/h:
%
20
15

13
Table1.2 (continued)
1
2
3
Anisotropy at solid angle of 60°
relative to the main (perpendicular
to the front panel of the dosimeter)
direction of measurement:
- for radionuclides 137Cs and 60Co,
not more than
- for radionuclide 241Am, not more
than
%
25
60

14
Table1.2 (continued)
1
2
3
Complementary relative permissi-
ble error limit of photon ionizing
radiation DER and DE measure-
ment result caused by ambient tem-
perature deviation from 20oС, in the
temperature range from minus 20 to
+50 oС
%
±5
per each
10 оСof
deviation
from
20 оС
Operating supply voltageof the dosim-
eter from Li-polymer battery with a ca-
pacity of at least 400 mAh
V
3.7

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Table1.2 (continued)
1
2
3
Time of continuous operation ofthe dosime-
ter under normal climatic conditions when
powered from a fully charged battery:
- under gamma backgroundnot more than
0.5 μSv/h and with switched off LCD back-
light, switched off sound and vibration alarm,
not less than
- under the conditionsof DER measurement
equal to1 Sv/h and with switched on LCD
backlight, switched on sound and vibration
alarm, not lessthan
h
170
4

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Table1.2 (continued)
1
2
3
Unstable readings of the dosimeter
during 8 hours of continuous opera-
tion, not more than
%
5
Mean life of the dosimeter (includ-
ing repairs), not less than
year
10
Mean time to failure, at least
h
6000
Mean time to recovery of the do-
simeter
h
4

17
Table1.2 (continued)
1
2
3
Mean shelf life of the do-
simeter provided that the
battery is charged 6
months after the begin-
ning of storage, at least
year
10
Dimensions of the dosim-
eter with a clip, not more
than
mm
84.555.024.5
Weight of the dosimeter,
not more than
kg
0.11

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Table1.3
1
2
3
Energyrange of detected photon ionizing
radiationby EPD-27 "DoseG"dosimeter
keV
50 –
10 000
Energydependenceof EPD-27 "DoseG"
dosimeter when measuringphoton ioniz-
ing radiation DER and DE relative to
662 keV energy(137Cs), not more than
- in the energy range from 50 keV to
7 MeV
- in the energy range from 7 MeV to
10 MeV
%
25
40