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RJ14 upright-type radiation detector

RJ14 upright-type radiation detector Featured Image
  • RJ14 upright-type radiation detector

Short Description:

Removable gate (column) type radiation detector is used for pedestrian rapid passage monitoring system in radioactive monitoring places. It uses large volume plastic scintillator detector, which has the characteristics of small volume, easy to carry, high sensitivity, low false alarm rate, and is suitable for nuclear emergency and other special radioactive detection occasions.


Product Detail

The Key Technical Indexes

Product Tags

hardware composition

①　Detection assembly: 2 sets of large-volume plastic scintillator + 2 sets of low-noise photomultiplier tubes

②　Support structure: column type waterproof frame design, can be quickly disassembled, with a fixed bracket

③　 Alarm device: 1 set of site central sound and light alarm each

④　Transport component: the TCP / IP transport component.

RJ14
RJ14

technical feature

1) The BIN (Background Identification of Normal) background ignores the technology

The technology can quickly detect a low level of artificial radioactive substances in the case of high radiation background, detection time up to 200 milliseconds, while allowing the vehicle to detect radioactive substances under rapid movement, suitable for rapid detection, and can ensure that the equipment will not be false alarm because of the background increase substantially; and can compensate for the vehicle space caused by natural ray screening background count reduction, increase the authenticity of the inspection results, improve the detection probability, especially for weak radioactive detection is very helpful;

2) The NORM reject function

This function is used to identify and judge natural nuclide radioactive substances. Assist customers to eliminate the alarm is artificial radioactive material or natural radioactive material;

3) Feature SIGMA statistical algorithm

Through the feature SIGMA algorithm, users can easily adjust the device detection sensitivity and the probability of false positives, can improve the sensitivity of the required detection of very weak radioactive sources (such as radioactive sources lost), or in the long-term online monitoring process to prevent the device false positives, so as to receive and release freely;

4) the key technical indexes

Detector type: original plate plastic scintillator + Japan Hamamatsu low noise photomultiplier tube

(1) Energy range: 20keV~3MeV

(2) Sensitivity: 2,500 c p s / Sv / h (137Cs）

(3) Lower detection: can detect radiation 20nSv/h(0.5R/h above background)

(4) False positives rate: <0.01%

(5) Assembly time: 5 mins

(6) Alarm: The instrument design has high background low alarm and low count fault alarm

(7) Detection mode: infrared reflection sensor

(8) Display: the LCD LCD display, the instrument has the in-place display alarm and computer management functions, the display of the current count and the background high or low count indication

(9) Impact resistance: three shock absorbers for impact and collision resistance

(10) Operating temperature: -40℃ to + 50℃

(11) Power supply: 220V AC current

(12) UPS uninterrupted power supply: continuous working continuously for 7 hours after power failure

(13) Weight: 50kg

(14) Configuration: portable box 1 set

Software indicators

(1) Report form: Generate excel spreadsheet permanently; distinguish color display for different alarm types;

(2) Report content: the system will automatically generate a detection report, which includes pedestrian, baggage access passage time, exit passage time, radiation level, alarm type, alarm type, alarm level, passing speed, background radiation level, alarm threshold, sensitive nuclear material and other information;

(3) Count display mode: digital display combined with real-time waveform display;

(4) Field control: allow authorized personnel to enter conclusions on each inspection result;

(5)  Database: users can make keyword queries;

(6) Administrative permission: the authorized account can enter the background expert mode.

(7) Detection mode: infrared reflection sensor

Systemic indicators

(1) The equipment meets the requirements of the national standard: “Radioactive Materials and Special Nuclear Materials Monitoring System GBT24246-2009”, for the portal pedestrian monitoring system;

(2) Sensitivity consistency: a 30% change in sensitivity in the height direction of the monitoring area;

(3) Detection probability: greater than or equal to 99.9% (137Cs);

(4)  False alarm rate: less than 0.1 ‰ (one in ten thousand);

(5) Measurement height: 0.1m〜2.0m; recommended measurement width: 1.0m〜1.5m.

(6)  Database: users can make keyword queries;

(7) Administrative permission: the authorized account can enter the background expert mode.

(8) Detection mode: infrared reflection sensor

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    Parameter Information

    Admito detector index
    • Detector type: American EJ original imported plate plastic scintillator + Japan Hamamatsu low noise photomultiplier tube
    • Volume: 50,60,100,120,150,200, optional
    • Dose rate range: 1nSv / h~6Sv / h (100 l)
    • Energy range: 25keV~3MeV
    • Sensitivity: 6,240 c p s / Sv / h / L (relative)137Cs）
    • Lower limit of detection: can detect radiation of 5nSv/h(0.5R/h above the background)
    • Self-calibration: low-activity natural radioactive mineral box (non-radioactive source)

    Neutron detector indicator
    • Probe type: long life3He Neutron detector (1 atmospheric pressure)
    • Energy range: 0.025eV (hot neutron) ~14MeV
    • Count of life: 1017A count
    • Size of the effective detection area: 54mm 1160mm, 55mm 620mm is optional;
    • Sensitivity: 75 cps / Sv / h (relative to the other)252Cf）
    • Underlying count: <5cps

    Online nuclide identification indicators
    • Detector type: France SAN Gobain bulk sodium iodide detector + low potassium quartz photomultiplier tube
    • Detector volume: 1,2,8,16, optional
    • Measuring range: 1nSv / h~8Sv / h
    • Energy range: 40keV~3MeV
    • Sensitivity: 47,500 c p s / Sv / h (relative to the other)137Cs）
    • Underlay: 2,000 c p s
    • Lower limit of detection: can detect radiation of 5nSv/h(0.5R/h above the background)

    System detection sensitivity
    • Underlying: Gamma reference background of 10u R / h, neutron background of not greater than 5cps (system count rate)
    • False positives rate: 0.1%
    • Source distance: the radioactive source is 2.5 meters away from the detection surface
    • Source shielding: Gamma source unshielded, neutron source unslow, that is, using the naked source test
    • Source movement speed: 8 km/h
    • Source activity accuracy: ± 20%
    • Under the above conditions that can detect the radioactive substances of the activity or quality listed in the following table, the alarm probability within 95% confidence should be 90%:
    Isotopic, or the SNM 137Cs 60Co 241Am 252Cf enriched uranium ASTM plutonium (ASTM)γ plutonium (ASTM)n
    Activity or quality 0.6 MBq 0.15MBq 17MBq 20000/s 1000g 10g 200g

     

    Support structure indicators
    • Level of protection: IP65
    • Column size: 150mm 150mm 5mm square steel column
    • Surface treatment process: overall plastic spraying, chrysanthemum grain
    • Collimator lead equivalent: 510mm lead antimony alloy + 52mm stainless steel wrapped
    • Total height after installation: 4.92 m

    Central control and management system indicators
    • Computer: i5 above Lenovo brand computer
    • Computer system: WIN7
    • Hard drive: 500G
    • Data storage time: 10 years

    Software indicators
    • Report form: Generate excel spreadsheet permanently; distinguish color display for different alarm types;
    • Report content: The system will automatically generate the test report, including the vehicle entry channel time, time of exit time, license plate number, container number, radiation level, alarm level, alarm type, alarm level, passing speed, background radiation level, alarm threshold, sensitive nuclear material and other information
    • Count display mode: digital display combined with real-time waveform display
    • Field control: allow authorized personnel to enter conclusions on each inspection result
    • Database: The user can make keyword queries
    • Administrative permission: the authorized account can enter the background expert mode

    Systemic indicators
    • System sensitivity consistency: 40% change in sensitivity in the height direction of the monitoring area
    • NORM rejection function: identifying natural radionuclides in cargo (40K) the function of
    • n. Detection probability: greater than or equal to 99.9%
    • n. False positives rate: less than or equal to 0.1 ‰ (1 in 10,000)
    • Height: 0.1m~4.8m
    • Monitoring area width: 4m~5.5m
    • Speed monitoring method: double-sided infrared reaction shot
    • Allowed passing speed: 8 km/h ~ 20 km/h
    • Electronic lever: lever lifting time is less than or equal to 6 seconds, lever can be manually lifted after power off (optional)
    • Video surveillance: an HD night vision camera
    • SMS alarm system: full netcom, customer self-provided SIM card
    • One-time box number system identification rate: greater than or equal to 95%
    • One-time pass license plate recognition rate: greater than or equal to 95%
    • Warning decibel: 90~120db; control center 65~90db
    • Adjustment of alarm threshold and false alarm rate: Key value through SIGMA
    • Data transmission mode: wired TCP / IP mode
    • Vehicle overspeed alarm: with the vehicle overspeed alarm function and provide information display, the alarm speed can be set
    • Radiation source positioning function: the system automatically indicates the location in the compartment of the radioactive source
    • Large field screen led screen size: 0.5m×1.2m (optional)
    • Live broadcast system: 120db (optional)
    • Power-off endurance: The monitoring terminal endurance time is greater than 48 hours (optional)
    • The equipment meets the requirements of the national standard “Radioactive Materials and Special Nuclear Material Monitoring System” GBT24246-2009 for the portal vehicle monitoring system and the neutron detection efficiency
    • It meets the requirements of the neutron and detection efficiency of the portal vehicle monitoring system in the Technical and Functional Specifications for Border Monitoring Equipment and IAEA-TECDOC-1312 released in IAEA 2006

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