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Manufacturer

SPC Doza

124460, Russia, Moscow, Zelenograd, Avenue 4806, Ltd. 6

doza@made-in-zelenograd.com

Monitor for determination of alpha and beta surface contamination RZBA-04-04M

Descriptions

Purpose:

  • warning light READY (ready for measurement)
  • visible and audible alarms CONTAMINATION (presence of contamination in excess of the threshold) and CLEAN (contamination is absent)
  • individual threshold setting for each measurement channel
  • automatic compensation for background gamma radiation and contamination of detector units
  • indication of the contamination level for each detector unit from a system keyboard
  • input of threshold settings from a system keyboard
  • automatic self-test capability for detectors and measurement channels
  • indication of contaminated part(s) of the body on the panel with mnemonic image of the body
  • network capability through communication interfaces RS-485 and RS-232
  • availability of different models allows the user to purchase a system equipped with necessary number of measurement channels (from 15 to 20), optional remote detector units, detectors for monitoring of dorsal sides of hands, sensors detectors for monitoring of head and the built-in computer
Controlled areas of the body:
ChannelDetector unitMonitored part of the bodyComment
1BDZBFaceStationary (built-in) measurement channels
2BDZBChest
3BDZBPalm of left hand
4BDZBPalm of right hand
5BDZBAbdomen
6BDZBLeft knee
7BDZBRight knee
8BDZBBack of the head
9BDZBShoulder-blade, neck
10BDZBBack
11BDZBButtocks
12BDZBSural area of the right leg
13BDZBSural area of the left leg
14BDZBFoot of the left leg
15BDZBFoot of the right leg
16BDZBDorsal side of the left hand
17BDZBDorsal side of the right hand
18BDZBUpper area of the head
19BDZBMeasurement of beta contaminationRemote measurement channels
20BDZBMeasurement of alpha contamination
21BDZBMeasurement of background gamma radiationBuilt-in measurement channel

Delivery options:

  • Racks with two exit doors: 20, 21, 22, 23, 24, 25, 28, 29, 32, 36, 68
  • Racks with one exit door: 40, 41, 42, 44, 48, 49, 52, 54, 56
ModelConfiguration
Maximum configuration:
20, 40stand with 18 stationary BDZB detector units
one remote detector unit BDZB-05 for beta radiation
one remote detector unit BDZA-96 for alpha radiation
BOI-04
21, 41stand with 15 stationary BDZB detector units for beta contamination measurements
one remote channel for beta radiation
one remote channel for alpha radiation
22, 42stand with 15 stationary BDZB detector units for beta contamination measurements (analog of RZB-98)
24,44stand with 15 stationary BDZB detector units for beta contamination measurements
one remote channel for beta radiation
BOI-04
28,48stand with 18 stationary BDZB detector units
one remote channel for beta radiation (BDZB-05)
29,49stand with 18 stationary BDZB detector units
one remote channel for alpha radiation (BDZA-96)
32,52stand with 18 stationary BDZB detector units for beta contamination measurements
34,54stand with 15 stationary BDZB detector units (equipped with magnets of traveling column for pitching conditions)
marine model
36,56stand with 17 stationary BDZB detector units (15 + 2 units for dorsal sides of hands)
6stand with 36 stationary BDZB detector units
built-in computer
one remote channel for beta radiation
one remote channel for alpha radiation
BOI-04
Technical characteristics
Detector type in BDZB unitsgas discharge counters SBT-10
Detector type in BDZA unitsscintillation counters with ZnS(Ag)
Measurement range of beta particles flux density5÷15000 min-1sm-2
Measurement range of alpha particles flux density0,1÷10000 min-1sm-2
Energy range of detected beta particle0,15÷2,5 MeV
Energy range of detected alpha particles4,1÷5,6 MeV
Limits of basic relative measurement error of beta and alpha particles flux density at confidence probability 0.95no more than±30 %
Sensitivity of BDZB detector units to beta radiation of strontium-90 reference sources (working standards) of SO type:
channels 1-13; 16-19no less than 0.5 (pulses/s)/(min-1sm-2)
channels 14, 15no less than 0.3 (pulses/s)/(min-1sm-2)
Sensitivity of BDZA detector units to alpha radiation of reference sources (working standards):
P9 reference source with Pu-239no less than 0.2 (pulses/s)/(min-1sm-2)
U8 reference source with U-238no less than 0.08 (pulses/s)/(min-1sm-2)
U4 reference source with U-234no less than 0.04 (pulses/s)/(min-1sm-2)
Range of preset surface contamination alarm threshold (individual thresholds are set for each measurement channel):
BDZA detector unit0,1÷9999 min-1sm-2
BDZB detector unit5 ÷9999 min-1sm-2
Alarm threshold resolution:
below 5 min-1sm-20,1 min-1sm-2
above 5 min-1sm-21 min-1sm-2
Warmup timeno more than 10 minutes
Continuous operation timeno less than 24 hours
Instability of measurement results during 24 hoursno more than 5 %
Operation conditions:
temperature range+5÷+50 °
relative humidityup to 95 % (at +35 °)
atmospheric pressure84÷106,7 kPa
Overall dimensions, weight:
stand with built-in BDZB detector units and UAK-07 measurement unit2650×940×930 mm, 310 kg
BDZB detector unit (remote measurement channel)230×110×100 mm, 1,8 kg
BDZA detector unit (remote measurement channel)diam. 120×320 mm, 1,4 kg
BOI-04 control unit for remote measurement channels165×190×110 mm, 2,8 kg
Power supply187×242 V, 49×51 Hz
Power consumptionno more than 150 VA
Mean time between failures (MTBF)no less than 10000 hours

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