ECOTEST BDBG-09 User manual

BDBG-09
DETECTING UNIT OF GAMMA RADIATION
Operating manual

Operating manual ВІСТ.418266.006-03 НЕ

Operating manual ВІСТ.418266.006-03 НЕ
3
CONTENTS
1 DESCRIPTION AND OPERATION ...............................................................................................4
2 PROPER USE................................................................................................................................10
3 MAINTENANCE ..........................................................................................................................13
4 REPAIR ..........................................................................................................................................20
5 STORAGE AND PUTTING IN PROLONGED STORAGE.........................................................20
6 SHIPPING.......................................................................................................................................20
7 DISPOSAL.....................................................................................................................................20
APPENDIX А ....................................................................................................................................21
APPENDIX B....................................................................................................................................28
APPENDIX C....................................................................................................................................44
APPENDIX D....................................................................................................................................45
APPENDIX E ....................................................................................................................................46

Operating manual ВІСТ.418266.006-03 НЕ
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This operating manual (the OM) is intended to inform the user about principles of operation,
rules of application, maintenance, storage and shipping of the BDBG-09 detecting unit of gamma
radiation.
The OM contains the following abbreviations:
DER - ambient dose equivalent rate
)10(
*
H

of gamma radiation;
PC - personal computer.
1 DESCRIPTION AND OPERATION
1.1 Purpose of use of the BDBG-09 detecting unit
The BDBG-09 detecting unit of gamma radiation (hereinafter called the detecting unit) is
designed to measure ambient dose equivalent rate
)10(
*
H

of gamma radiation (hereinafter DER).
The detecting unit can be used as a part of computer-aided systems of radiation control.
1.2 Technical specifications
1.2.1 Key specifications are presented in the Table 1.1.
Table 1.1 –Key specifications of the detecting unit
Name
Unit of
measurement
Standardized value
according to the
specifications
1 Measurement range of gamma radiation
DER
μSv/h
0.04–107
2 Basic relative permissible error limit of
gamma radiation DER measurement with
0.95 confidence probability
%
15+2/
)10(
*
H

, where
)10(
*
H

is a numeric value of gamma
radiation DER in μSv/h
3 Energy range of registered gamma radiation
MeV
0.05 –3.00
4 Energy dependence of measurement results
of the detecting unit at gamma radiation DER
measurement in the energy range of
0.05 MeV to 1.25 MeV
%
25
5 Anisotropy of the detecting unit at gamma
quanta incidence at angles from +60оto - 60о
horizontally and vertically relative to the main
measurement direction, marked by a
“+” symbol , does not exceed:
- for 137Cs and 60Со isotopes
- for 241Am isotope
%
25
60

Operating manual ВІСТ.418266.006-03 НЕ
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Table 1.1 (continued)
Name
Unit of
measurement
Standardized value
according to the
specifications
6 Operating supply voltage range of the detecting
unit from external regulated power supply
V
7 –13.5
7 Consumption current of the detecting unit should
not exceed:
-without the use of PI-09 interface converter
-with the use of PI-09 interface converter
mA
30
155
8 Setup time of operating mode and measurement
time of the detecting unit, not more than
min
3
9 Unstable readings of the detecting unit during
24-hour continuous operation, not more than
%
5
10 Complementary permissible error limit at
measurement caused by ambient temperature change
from - 40oC to 75 oC
%
5
per each 10 оС
deviation from
(20±5)оС
11 Interface
-
RS-485
12 Dimensions, not more than
-the detecting unit without fastening elements
-PI-09 interface converter without fastening
elements
mm
60х60х170
80х150х200
13 Weight:
-the detecting unit without fastening elements
-PI-09 interface converter without fastening
elements
kg
0.5
2.4
1.2.2 Use environment
1.2.2.1 Concerning the resistance to climatic and other environmental factors, the
detecting unit meets the requirements outlined below.
1.2.2.2 The detecting unit is resistant to the influence of the following climatic factors:
- air temperature from - 40 оСto 75 оС;
- relative humidity up to 100 % at 40 оСtemperature and lower temperatures with humidity
condensation;
- atmospheric pressure form 84 kPa to 106.7 kPa.
No requirements to other climatic factors.
1.2.2.3 The detecting unit is resistant to sinusoidal vibrations.
1.2.2.4 The detecting unit is resistant to shocks with the following parameters:
- shock pulse duration –from 5 ms to 10 ms;
- number of shocks –1000±10;
- maximum shock acceleration –100 m/s2.
1.2.2.5 The detecting unit in shipping container is resistant to the influence of:
- ambient air temperature from - 40 оСto 75 оС;
- relative humidity up to (95 3) % at 35 оСtemperature;
- shocks with acceleration of 98 m/s2, shock pulse duration of 16 ms, and number of
shocks –1000±10.
1.2.2.6 The detecting unit is resistant to the influence of magnetostatic fields or alternating
(50 Hz1 Hz) magnetic fields of 400 A/m voltage.
1.2.2.7 The detecting unit is resistant to the influence of gamma radiation with exposure
dose rate equal to equivalent dose rate up to 1000 Sv/hour during 5 min.

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1.2.2.8 The detecting unit supports the operability control of the built-in detectors with
formation of check information.
1.1.2.9 The detecting unit belongs to the automation equipment (AE) of the information
systems for normal use of safety class 3 (classification mark 3H) according to the NP 306.2.141.
1.1.2.10 The detecting unit (when operating) is resistant to vibrations caused by design
earthquake of the 7 grade intensity according to the MSK-64 scale of ДСТУ Б В.1.1-28 (II
aseismic class according to the order of the State Nuclear Regulatory Inspectorate of Ukraine No.
175 dated October 17, 2014, design elevation –up to 70 m).
1.3 Delivery kit of the detecting unit
The delivery kit of the detecting unit consists of units and maintenance documentation,
given below.
Designation
Name
Quantity
ВІСТ.418266.030-02
BDBG-09 detecting unit
1
ВІСТ.745265.001
Corbel
1
ВІСТ.418266.006-03 НЕ
Operating manual *
1
ВІСТ.418266.006-03 ФО
Logbook
1
ВIСТ.412915.003-03
Packing
1
ВІСТ.412911.001
Assembly parts kit (APK) **
1
ВІСТ.412919.001
Technological kit ***
1
ВІСТ.468173.002
PI-09 interface ***
1
ВІСТ.468173.002-03 ПС
Passport***
1
* One copy per one consignment of the detecting units
** APK is applied by the user in producing a connecting cable for connection to the system.
Belden 8102 cable with added screen is recommended. The connecting cable should be ordered
additionally.
*** Supplied on the customer’s demand in a separate order.

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1.4 Design and operation principle of the detecting unit
1.4.1 Design description
Appearance of the detecting unit with the connected cable is shown in Figure 1 (a):
- detecting unit (1),
- connecting cable (2),
- detent (3) and corbel (4) to attach to the wall.
Figure 1 (a)
Alternatively, the detecting unit can be fastened to the surface where it will be directly
installed is shown in Figure 1 (b). The Figure 1 (b) shows that the barrel of the detecting unit with a
reference point (5), indicating the direction towards the radioactive source, is attached with its base
(2) to the surface using a plank (3). The connecting cable is connected to the connector (4).
Figure 1 (b)

Operating manual ВІСТ.418266.006-03 НЕ
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The case of the detecting unit (according to Figure 2) consists of two parts: a base (1) and a
barrel (2). A printed-circuit board (3), with electric circuit elements placed on it, is attached with its
bottom part to the base (1). An insulator (4), located in the top part of the printed-circuit board (3),
serves to fix it inside the barrel (2). An external electric coupler (5) is adjusted in the bottom part of
the base (1) with the help of four screws. The detecting unit is sealed with circular rubber pads (6)
that protect it from the influence of external climatic factors.
Figure 2
1.4.2 Operation principle of the detecting unit
The detecting unit consists of a microcontroller, a high sensitivity detector, a low
sensitivity detector, a supply voltage former, and an RS-485 interface node.
Operation of the detecting unit is based on the method of gamma radiation transformation
into voltage pulse train on the detectors’ outlet. The high sensitivity (СБМ-20) and low sensitivity
(СИ 3БГ) Geiger-Muller counters are used in the detecting unit as the detectors.
The microcontroller processes the pulse flow from the detectors, and forms gamma
radiation DER value, which corresponds to the flow, with the account of personal background of
the detectors. The microcontroller also calculates a maximum value of DER measurement
statistical error for each gamma radiation DER value. At the same time the microcontroller runs
the power supply of the detectors and continuously controls their operability. If requested by the
data display system, the microcontroller sends a protocol frame via RS-485 interface nod. The
protocol frame contains information about current gamma radiation DER, maximum statistical
error of its measurement, and results of the operability control of the detectors.
The nonvolatile memory is a part of the microcontroller and serves for storage of
calibration factors. These factors allow considering and compensating the detector sensitivity
dispersion, and linearizing the counting feature of the detectors within the measurement range. If
requested by the data display system, the microcontroller sends a frame with current calibration
factors via RS-485 interface nod, or receives a frame with new calibration factors for storage in
the nonvolatile memory. The communications protocol is presented in the Appendix C.
The supply voltage former transforms voltage of the external power source into
3.3 V voltage for power supply of the secondary part of the detecting unit circuit, and generates
anode voltage of the high sensitivity and low sensitivity detectors.

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1.5 Measuring instruments, tools and equipment
1.5.1 A list of measuring instruments, tools and equipment necessary for control, setting and
current repair of the detecting unit is presented in the Table 1.2.
Table 1.2 –List of measuring instruments, tools and equipment
Name
Standardized document or main technical
requirements
1 Special-purpose testing unit with 137Cs
source of ОСГИ type
Gamma radiation DER from source at
measuring point in the range of 50 μSv/h to
100 μSv/h
2 Stopwatch
Measurement range –from1 s to 59 min
3 В7-21А Digital voltmeter
Measurement range of direct current intensity
from 10-7 А to 1 А
4 ИПУ-12У2 DC power source
Output voltage - from 0 V to 30 V.
Output current - from 0 А to 2.5 А
5 УПГД-3В Standard equipment
Gamma radiation DER range from 0.8 μSv/h to
1.0 Sv/h
6 Technological set
ВІСТ.412919.001
ВІСТ.468353.001 Serial port adapter
ВІСТ.436231.001 Power unit
ВІСТ.685621.002 Service cable
ВІСТ.685622.002 Service cable
ВІСТ.467371.001 CD with technological
software
7 Personal computer
IBM-compatible personal computer with
installed Windows OS, technological software
and free serial port
Note - Other measuring instruments that satisfy the specified accuracy are permitted
1.6 Labeling and sealing
1.6.1 The case of the detecting unit is marked with engraving according to the design
document of the producer enterprise. Labeling contains:
- trademark of the producer enterprise;
- design letter and type of the detecting unit;
- "+" symbol that determines main direction of measurement;
- serial number according to the numbering system of the manufacturer;
- specifications marking;
-IP67 ingressprotectionratingforthe detectingunit accordingtoGOST14254-96;
- production date.
Note –Technical specifications, trademark of the producer enterprise, ingress protection rating, and
bar-code marking can be printed on the individual packing of the detecting unit.

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1.6.2 Sealing of the device is performed by the producer enterprise.
1.6.3 Removal of seals and repeated sealing is performed by the organization in charge of
repair of the units.
1.6.4 Labeling of the shipping container contains main (consignee and destination),
additional (consigner of goods and origin), and informational (gross and net weight in kg) letterings,
as well as handling marks No.1 “Fragile –Handle with care”, No.3 “Protect from humidity”,
No.11 “This side up”.
The type of the detecting unit (BDBG-09) and the number of the detecting units in packing
box is labeled under the main letterings.
The shipping container with the packed detecting units is sealed by the representative of the
Quality Control Department of the producer enterprise.
1.7 Packing
1.7.1 The detecting unit and the maintenance documentation are packed in a special
cardboard box, which should be placed into a transparent plastic sachet, which is welded after
packing performed.
1.7.2 At shipping, the detecting units are packed into unitized shipping containers (boxes).
Inside surfaces of the walls, bottom and cover of the box should be furnished with corrugated
cradboard.
Note –Other types of unitized containers (containers, cartons) are allowed.
2 PROPER USE
2.1 Operating limitations
2.1.1 The detecting unit is a complex electronic physical device that should be serviced
competently.
2.1.2 Study this document before you start using the detecting unit. All requirements stated in
the technical documents for the detecting unit should be precisely met.
2.1.3 The detecting unit should operate under the conditions that do not fall outside the use
requirements outlined in section 1.2.2.
2.2 Preparation of the detecting unit for operation
2.2.1 Safety measures
2.2.1.1 The detecting unit contains no external parts exposed to voltages hazardous for life.
2.2.1.2 During calibration and testing of the detecting units, if operating with ionizing
radiation sources, the radiation safety requirements stated in valid regulatory documents should be
met - NRBU-97 and DSP 6.177-2005-09 standards.
2.2.2 Volume and order of external examination
2.2.2.1 Before using the detecting unit, unpack it and check if the delivery kit is complete.
Examine for mechanical damage.

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2.2.2.2 Before using the detecting unit that was on temporary closing-down, re-activate it and
check its operability.
2.2.2.3 Register the re-activation and putting the detecting unit in operation in the logbook.
2.2.3 Guidelines on switching on and testing the detecting unit with description of testing
procedure of the detecting unit in operation
2.2.3.1 Prepare the PC-based data display system for operation. Do the following:
- unpack the serial port adapter with ВІСТ.468353.001 power unit (hereinafter the adapter),
ВІСТ.685621.002 and ВІСТ.685622.002 service cables;
- connect the adapter to the power unit;
- connect the adapter to the free serial port of the personal computer (hereinafter the PC) with
the help of the ВІСТ.685622.002 service cable.
Caution! Connection of the adapter to the RS-232 serial port of the PC can be
performed only if the adapter and the PC are switched off. Otherwise, the adapter and the PC
serial port can breakdown.
Note –The PC should have installed OS Windows and technological software. Technological software
should be installed as described in the Appendix A.
2.2.3.2 Prepare the detecting unit for operation. Do the following:
- unpack the detecting unit;
- connect the detecting unit to the adapter with the help of the ВІСТ.685621.002 service cable.
2.2.3.3 Switch the PC on, connect the power unit of the adapter to (220±22) V industrial
network. Start the bdbg.exe program and prepare it to gamma radiation DER measurement. Do the
following:
- select a serial port with the connected adapter in the Setup tab;
- proceed to the Work tab and press the Measurement button.
2.2.3.4 Measure gamma background DER indoors. To do this, wait until a probable value of
measured DER appears in the MEASURED RATE zone of the bdbg.exe program window. Value
probability (measurement result error remains within the equipment certificate) is indicated by DER
measurements in black color. Wait circa 180 s to get a probable value of background levels. If DER
measurement is stable, the total integration time is up to 420 s (if DER levels are near-background),
what gives an opportunity to reduce the statistical error of measurements. As DER increases, time
decreases to 1 s.
2.2.4 List of possible troubles and troubleshooting
2.2.4.1 The list of possible troubles and troubleshooting is presented in the Table 2.1.
Table 2.1 - List of possible troubles and troubleshooting
Trouble
Probable cause
Troubleshooting
1 The detecting unit does not
respond to protocol frames from
the data display system
1 The cable between the
detecting unit and the data
display system is damaged
1 Repair the cable

Operating manual ВІСТ.418266.006-03 НЕ
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Table 2.1 (continued)
Trouble
Probable cause
Troubleshooting
2 Information evidence of the
high sensitivity detector failure
(D0 bit is set in the byte of the
self-testing results of the detecting
unit)
2 Failure of the high
sensitivity detector, which is
a part of the detecting unit
2 Send the detecting unit for
repair to the repair services or
to the producer enterprise
3 Information evidence of the low
sensitivity detector failure (D1 bit
is set in the byte of the self-testing
results of the detecting unit)
3 Failure of the low
sensitivity detector, which is
a part of the detecting unit
3 Send the detecting unit for
repair to the repair services or
to the producer enterprise
2.2.4.2 At failure to eliminate the troubles presented in the Table 2.1, or at detection of more
complicated faults, the detecting unit should be sent for repair to the repair services or to the
producer enterprise.
2.3 Use of the detecting unit
2.3.1 Safety measures during use of the detecting unit
2.3.1.1 Safety measures during use of the detecting unit fully comply with the requirements
presented in 2.2.1 of the OM.
2.3.1.2 The direct use of the detecting unit is not dangerous for the maintenance personnel and
is environmentally friendly.
2.3.2 Operation procedure of the detecting unit
2.3.2.1 Assembling of the detecting unit
For assembling of the detecting unit, do the following:
- unpack the detecting unit and the corbel, used to fasten the detecting unit to the wall;
- fix the corbel vertically to the wall;
- corbel the detecting unit;
- connect the detecting unit to the data display system with the help of the ВІСТ.685621.001
cable;
- fix the cable in the operating position.
2.3.2.2 Measurement of gamma radiation DER
After source voltage is supplied from the data display system to the detecting unit, the latter
(not later than in 30 s) starts automatic measurement of gamma radiation DER, and processing of
protocol frames from the data display system.
Probable (error within the equipment certificate) information about measured gamma
radiation DER level will appear on the outlet of the detecting unit not later than in 3 min after the
beginning of measurement when DER levels are near-background. Measurement time decreases, as
gamma radiation DER level increases.

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3 MAINTENANCE
3.1 Technical maintenance of the detecting unit
3.1.1 General instructions
The list of operations during technical maintenance (hereinafter the TM) of the detecting unit,
order and peculiarities of operational phases are given in the Table 3.1.
Table 3.1 –List of operations during maintenance
List of operations
Maintenance type
OM item No.
during
during
long-term
storage
everyday use
periodical use
(annually)
External examination
Delivery kit completeness
check
Operability check
Refreshing damaged painting
Testing
Registration of operations in
the performance records table
-
-
+
-
-
-
+
-
+
+
+
+
+
+
+
+
+
-
3.1.3.1
3.1.3.2
3.1.3.3
3.1.3.4
3.2
3.1.3.5
Note –“+” symbol means the operation is applicable during this maintenance type, “-” symbol
means the operation is not applicable.
3.1.2 Safety measures
Safety measures during maintenance fully comply with safety measures presented in 2.2.1 of
the OM.
3.1.3 Maintenance procedure of the detecting unit
3.1.3.1 External examination
3.1.3.1.1 External examination of the detecting unit should be performed in the following
order:
а) check the technical condition of the detecting unit surface, integrity of seals, absence of
scratches, traces of corrosion, and surface damage;
b) check the condition of connectors in the cable connection point.
Clean the metal parts of the detecting unit with the oiled cloth after operation in the rain or
after special treatment (deactivation).
3.1.3.1.2 Deactivation of the case surface and component parts of the detecting unit is
performed if required.
Deactivate the surface of the component parts of the detecting unit by cleaning it with the
decontamination solution.
Boric acid (Н3ВО31216 g/l) is recommended to be used as the decontamination solution.
The following decontamination solutions are also permitted:
- 5 % solution of citric acid in ethyl alcohol С2Н5ОН (96 % concentration);
- boric acid –16 g/l, Na2S2O35H2O –1 % solution;
- standard synthetic detergents.
Expenditure rate of decontamination solution during deactivation of the detecting unit surface
is 0.2 l. Use cotton gloves, surgical gloves and sheeting during deactivation.

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To deactivate, wipe thoroughly the contaminated areas with a cloth moistened with
decontamination solution, then with a cloth moistened with warm water and wipe dry.
Notes
1 Before deactivating the detecting unit, put on cotton gloves and rubber (surgical) gloves, observing
safety requirements for operation with chemical solutions.
2 Deactivation of the detecting unit can be done according to the procedure established at the object of
use for ionizing radiation measuring instruments.
3.1.3.2 Delivery kit completeness check
Check if the delivery kit of the detecting unit is complete according to 1.3. Check the
technical condition, the placement of the component parts of the detecting unit, and the presence of
the maintenance documentation.
3.1.3.3 Operability check of the detecting unit
3.1.3.3.1 Operability check of the detecting unit in the process of its use is performed
automatically. Operability check of the detecting unit during its long-term storage is performed
according to 2.2.4.
3.1.3.3.2 The procedure of pre-repair fault detection and rejection
Use the following criteria to evaluate the necessity of sending the detecting unit for repair and
type of repair:
- for mid-life repair:
а) deviation of parameters from control values during periodical verification of the detecting
unit; b) minor defects of the cable or the connectors that do not affect their hermiticity and correct
readings of measurement results;
- for major repair:
a) at least one non-operating measuring channel;
b) mechanical damages that affected the hermiticity of the detecting unit case or the cable.
3.1.3.4 Refreshment of damaged painting
Refresh damaged painting of the detecting unit case with the help of the
НЦ-1125 enamel. Thoroughly select the color tone to avoid a considerable difference of lacquer
coating. Remove contamination from the segment that needs painting. Brush on a level layer of
paint on the surface.
3.1.3.5 Registration of operations in the performance records table.
Register actual operation hours of the detecting unit in section 11 of the logbook.
3.2 Testing of the detecting unit
Verification of the detecting units is performed in accordance with the verification procedure
given below.
The detecting units after repair and the detecting units in operation should be verified
(periodical verification at least once a year).
3.2.1 Testing operations
During testing, the operations presented in the Table 3.2 should be performed.

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Table 3.2 –Testing operations
Operation name
Testing procedure No.
1 External examination
3.2. 4.1
2 Testing
3.2. 4.2
3 Calculation of basic relative permissible error limits at gamma
radiation DЕR measurement
3.2.4.3
3.2.2 Testing facilities
The following measuring instruments and equipment should be used during testing:
- УПГД-3В Хд1.456.183 ТУ standard equipment;
- standard stopwatch;
- В7-21А digital voltmeter;
- МВ-4М aspirated psychrometer;
- М-67 control aneroid barometer;
- IBM-compatible personal computer with installed OS Windows, technological software and
free serial port;
- ВІСТ.412919.001 technological set, including:
ВІСТ.468353.001 serial port adapter
ВІСТ.436231.001 power unit
ВІСТ.685621.002 service cable
ВІСТ.685622.002 service cable
ВІСТ.467371.001 CD with technological software.
Usage of other measurement equipment that meets the specified accuracy is allowed.
3.2.3 Testing conditions
Testing should be carried in compliance with the following conditions:
- ambient air temperature in the range of (20±5) оС;
- relative air humidity in the range of (65±15) %;
- atmospheric pressure form 84 kPa to 106.7 kPa;
- natural background level of gamma radiation, not more than 0.25 µSv/h;
- power source voltage in the range of (12.0±0.5) V.
3.2.4 Testing procedure
3.2.4.1 External examination
During external examination the detecting unit should fulfill the following requirements:
- the delivery kit should be completed as described in section 3 of the ВIСТ.418266.006-03 ФО
logbook;
- labeling should be accurate;
- QCD seals should not be violated;
- the detecting unit should be free from mechanical damage that may affect its performance.
Note –The delivery kit completeness is checked only at manufacture.

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3.2.4.2 Testing
The detecting unit should be tested according to 2.2.3.
3.2.4.3 Calculation of basic relative error at gamma radiation DER measurement
3.2.4.3.1 Prepare the УПГД-3В standard equipment of gamma radiation for operation.
3.2.4.3.2 Fix the detecting unit in the УПГД-3В carriage holder, so that the mechanical center
of gamma quanta beam coincides with the center of detectors. The detector center is marked with
a «+» on the case of the detecting unit.
3.2.4.3.3 Prepare the PC-based data display system for operation according to 2.2.3.1 of
the OM. Connect the detecting unit to the adapter with the help of the ВІСТ.685621.002 service
cable and perform the operations according 2.2.3.3 of the OM.
3.2.4.3.4 In three minutes perform five measurements of gamma background DER indoors
with 10 s interval.
3.2.4.3.5 Register the received readings in the protocol. Calculate the average value of gamma
radiation DER by the formula:
5
)10(
5
1
*
*
=
=i
i
H
H


(3.1)
3.2.4.3.6 Place the УПГД-3В carriage with the detecting unit in a position, where gamma
radiation DER from 137Сs source is equal to
)10(
0
*
H

= (0.80.1) µSv/h.
3.2.4.3.7 In three minutes perform five measurements of DER with 10 s interval.
Register the received readings in the protocol.
3.2.4.3.8 Calculate the actual value of gamma radiation DER
*
H

(10) expressed in
microsieverts per hour by the formula:
)10()10()10(***
Ф
HHH  −= 
(3.2)
where
)10(
*
H

- is an average value of the detecting unit readings form the source and
external gamma background, calculated by the formula (3.1), µSv/h;
)10(
*
HФ

- is an average value of the detecting unit readings at measurement of gamma
background indoors, µSv/h.
3.2.4.3.9 Calculate the basic relative error limit at gamma radiation DER measurement,
expressed in percentage.
3.2.4.3.10 Calculate the confidence limit of relative random error of measurement results
(
)10(
*
H


)by the formula:
St= 
(3.3)
where
t
= 2.78 –is a Student coefficient at confidence probability of
P
= 0.95,
n
= 5;
S
- is a relative root-mean-square deviation of measurement results, calculated by the
formula:
( )
)1(
)10()10(
)10(
11
2
**
*−
−
=
=nn
HH
H
S
n
i
i

(3.4)

Operating manual ВІСТ.418266.006-03 НЕ
17
3.2.4.3.11 Calculate the limit of relative residual bias of measurement results by the formula:
2
0
*
2
0
*
0
**
2)10(
)10()10()10(
1,1 







+







−
= H
HHH 



(3.5)
where
)10(
0
*
H


- is a limit of basic relative permissible error of gamma radiation DER of
УПГД-3В.
3.2.4.3.12 If
8.0

S
, then
100)10(
*=
 H

.
3.2.4.3.13 If
8

S
, then
100)10(
*=H


.
3.2.4.3.14 If
88.0 

S
, then
100)10(
*= 
SKH


,
where К–is a coefficient that depends on the ratio of random errors and residual bias, and is
calculated by the formula:
3

+
+
=
S
K

, (3.6)
SΣ–a total standard mean-square deviation of measurement results is estimated by the
formula:
2
2
3







+=
SS
(3.7)
3.2.4.3.15 Place the УПГД-3В carriage with the detecting unit in a position, where gamma
radiation DER from 137Cs source equals to
)10(
0
*
H

= (8.01.0) µSv/h. Perform the operations
3.2.4.3.7 - 3.2.4.3.14 of the OM with the difference that measurement results should be taken after
the probable value of measured gamma radiation DER appears in the MEASURED RATE zone of
the bdbg.exe program window. Value probability is indicated by gamma radiation DER
measurements in black color.
3.2.4.3.16 Place the УПГД-3В carriage with the detecting unit in a position, where gamma
radiation DER from 137Cs source equals to
)10(
0
*
H

= (80.010.0) µSv/h. Perform five
measurements of gamma radiation DER with 10 s interval after the probable value of measured
gamma radiation DER appears in the MEASURED RATE zone of the bdbg.exe program window.
Value probability is indicated by gamma radiation DER measurements in black color. Register the
results in the protocol, and perform operations 3.2.4.3.9 - 3.2.4.3.14 of the OM.
3.2.4.3.17 Perform operations 3.2.4.3.16 of the OM for gamma radiation DER from 137Cs
source with the value of
)10(
0
*
H

= (800100) µSv/h.
3.2.4.3.18 Perform operations 3.2.4.3.16 of the OM for gamma radiation DER from 137Cs
source with the value of
)10(
0
*
H

= (80.1) mSv/h.

Operating manual ВІСТ.418266.006-03 НЕ
18
3.2.4.3.19 Perform operations 3.2.4.3.16 of the OM for gamma radiation DER from 137Cs
source with the value of
)10(
0
*
H

= (8010) mSv/h.
3.2.4.3.20 Perform operations 3.2.4.3.16 of the OM for gamma radiation DER from 137Cs
source with the value of
)10(
0
*
H

= (800100) mSv/h.
3.2.4.3.21 Perform operations 3.2.4.3.16 of the OM for gamma radiation DER from 137Cs
source with the value of
)10(
0
*
H

= (80.1) Sv/h.
3.2.4.3.22 If the detecting unit’s kit includes the interface converter, gamma radiation DER
range and the limit of the basic relative permissible error during measurement are measured
according to the following procedure.
3.2.4.3.22.1 Prepare the detecting unit to measure gamma radiation DER. To do this:
- connect the detecting unit to the interface converter using ВІСТ.685621.002 service cable;
- connect the interface converter using ВІСТ.685622.003 the service cable to the switching
desk SPI-09 ВІСТ.468363.001 (hereinafter - the switching desk);
- connect the output of the switching desk using ВІСТ.685691.001 service cable to the input
A of the frequency meter according to ДСТУ 7227 (hereinafter referred to as the frequency meter),
which is switched in the frequency measurement mode with 10 s integration time;
- wires from DC power source with of (12.0±0.5) V voltage and with (6.0±0.1) V voltage
connect to the terminals "+12 V" and "+ 6 V" of the switching desk respectively.
3.2.4.3.22.2 Fix the detecting unit in the УПГД-3В carriage holder, so that the mechanical
center of gamma quanta beam coincides with the center of gamma detector.
3.2.4.3.22.3 Turn on the DC power source with (12.0±0.5) V voltage, set the CHANNEL
switch of the switching desk to position "1" and in 3 minutes after turning on the power, perform
five frequency measurements using the frequency meter.
3.2.4.3.22.4 Register the received readings in the protocol. Calculate the average value of
gamma radiation DER by the formula:
5
)10(
)10(
5
1
*
*
=
=i
i
H
H


, (4.10)
where
*
і
H

(10) –is the value of ambient dose equivalent rate, calculated by the formula:
*
і
H

(10) = Fi / K1, (4.10.1)
where Fi - іth frequency value measured in hertz with the help of the frequency meter;
K1 –is the conversion factor for the 1st channel equal to 20.0773 "С-1 • μSv-1 • year".
3.2.4.3.22.5 Place the УПГД-3В carriage with the detecting unit in a position, where gamma
radiation DER from 137Cs source equals to
)10(
0
*
H

= (8.01.0) µSv/h.
In 3 minutes after the beginning of measurement, perform five measurements of gamma
radiation DER and enter the results into the protocol. Calculate the average gamma radiation DER
value.
3.2.4.3.22.6 Place the УПГД-3В carriage with the detecting unit in a position, where gamma
radiation DER from 137Cs source equals to
)10(
0
*
H

= (8.01.0) µSv/h and perform operations
(3.2.4.3.22.3, 3.2.4.3.22.4, 3.2.4.3.22.5, 3.2.4.3.8 –3.2.4.3.14).

Operating manual ВІСТ.418266.006-03 НЕ
19
3.2.4.3.22.7 Set the CHANNEL switch of the switching desk to position "2" and repeat
operation 3.2.4.3.22.6 with the difference that the value of ambient dose equivalent rate of gamma
radiation of the measured frequency should be calculated by the formula:
*
і
H

(10) = Fi / K2, (4.10.2)
where Fi - іth frequency value measured in hertz with the help of the frequency meter;
K2 –is the conversion factor for the 2nd channel equal to 0.1569 "С-1 • μSv-1 • year".
3.2.4.3.22.8 Place the УПГД-3В carriage with the detecting unit in a position, where gamma
radiation DER from 137Cs source equals to
)10(
0
*
H

= (8010) µSv/h and perform operations
3.2.4.3.22.6 and 3.2.4.3.22.7.
3.2.4.3.22.9 Set the CHANNEL switch of the switching desk to position "3" and repeat
operation 3.2.4.3.22.6 with the difference that the value of ambient dose equivalent rate of gamma
radiation of the measured frequency should be calculated by the formula:
*
і
H

(10) = Fi / K3, (4.10.3)
where Fi іth frequency value measured in hertz with the help of the frequency meter;
K3 –is the conversion factor for the 3rd channel equal to 0.0049 "С-1 • μSv-1 • year".
3.2.4.3.22.10 Perform operations 3.2.4.3.22.6, 3.2.4.3.22.7 and 3.2.4.3.22.9 for gamma
radiation DER from 137Cs source
)10(
0
*
H

= (800100) µSv/h.
3.2.4.3.22.11 Perform operations 3.2.4.3.22.6, 3.2.4.3.22.7 and 3.2.4.3.22.9 for gamma
radiation DER from 137Cs source
)10(
0
*
H

= (8.01.0) µSv/h.
3.2.4.3.22.12 Perform operations 3.2.4.3.22.6, 3.2.4.3.22.7 and 3.2.4.3.22.9 for gamma
radiation DER from 137Cs source
)10(
0
*
H

= (80.010.0) µSv/h.
3.2.4.3.22.13 Perform operations 3.2.4.3.22.6, 3.2.4.3.22.7 and 3.2.4.3.22.9 for gamma
radiation DER from 137Cs source 137Cs
)10(
0
*
H

= (800.0100.0) µSv/h.
3.2.4.3.22.14 Perform operations 3.2.4.3.22.6, 3.2.4.3.22.7 and 3.2.4.3.22.9 for gamma
radiation DER from 137Cs source
)10(
0
*
H

= (8000.01000.0) µSv/h.
Note - Operations according to 3.2.4.3.22.14 are allowed to be performed using 60Со source,
while the energy dependence of the detecting unit is checked.
3.2.4.3.22.15 Monitoring results are considered to be positive if they correspond to the values
given in lines 1, 2, 4 of Table 1.1, and in the checks 3.2.4.3.22.11 - 3.2.4.3.22.14 when the
CHANEL switch of the switching desk is set to position "1", measurement result will be
(2500375) μSv/h, in the checks 3.2.4.3.22.13 and 3.2.4.3.22.14, when the CHANEL switch of the
switching desk is set to position "2", the result of the measurement will be (32000048000) µSv/h.
3.2.4.3.22 The detecting unit is acknowledged to have passed the testing, if the limit of basic
relative error at measurement of each level of gamma radiation DER does not exceed
15+2/
)10(
*
H

, where
)10(
*
H

is a numeric value of gamma radiation DER, equivalent to µSv/h.
3.2.4.4 Presentation of testing results.
3.2.4.4.1 Positive results of periodic verification are certified by issuing a certificate of the
form established in accordance with legislation in the field of metrology and metrological activity,
or a note in section "Certificate of Acceptance" in the logbook for the detecting unit;
3.2.4.4.2 The detecting units that do not meet the requirements of the procedure are not
allowed for manufacture and use, and get the certificate of inadequacy in accordance with the
legislation in the field of metrology and metrological activity.

Operating manual ВІСТ.418266.006-03 НЕ
20
4 REPAIR
4.1 The manufacturer performs repair of the detecting unit:
PE “SPPE “Sparing-Vist Center”
Tel.: [phone], fax: [phone]
E-mail: [email protected].
5 STORAGE AND PUTTING IN PROLONGED STORAGE
5.1 Before putting in operation, the detecting unit should be stored in the packing of the
producer enterprise in storehouses under conditions 1 (Л) according to ГОСТ 15150-69. The
storage period should not exceed one year. Shipping time is included in the storage period of the
device.
5.2 If necessary to prolong the storage period, or if the storage conditions are stricter than
stated in 5.1, the consumer should temporarily close the detecting unit down according to ГОСТ
9.014-78. Temporary closing-down according to the ВЗ-10 protection option is recommended.
Silicagel, used during temporary closing-down, is recommended to be placed into fabric bags or
paper packages. It is allowed to perform not more than two temporary closing-downs. Before
putting in prolonged storage or repeated use, silicagel should be dried. Total time of the detecting
unit storage with the account of the repeated closing-down should not exceed 10 years.
6 SHIPPING
6.1 The detecting units should be shipped under the conditions similar to those presented
in 1.2.2.5.
6.2 The detecting units can be shipped by railway, motor, water and air transport. When
shipped by railway transport, the detecting units should be placed in a box car. When carried by
motor transport, they should be placed in a closed car or van, by water transport –in a ship’s hold,
and by air transport –in pressurized compartments.
6.3 During shipping of the detecting units, observe the handling marks inscribed on the
shipping containers.
6.4 Total time of shipping of the detecting units in packing of the producer enterprise should
not exceed one month.
7 DISPOSAL
Disposal of the detecting unit is performed as follows: metals are recycled or melted, and
plastic parts are dumped.
Disposal of the detecting unit is not dangerous for the service personnel, and is
environmentally friendly.
The detecting unit should be disassembled in accordance with the procedure established by
the user enterprise.