Vertical full body counter

Vertical full body counter (FN-STWBC-I)

Stand-type Whole-Body Counter

The vertical full body counter is mainly used for routine monitoring of radioactive contamination in nuclear facilities such as nuclear power plants or related radiation workers, and can provide reliable measurement data for personnel health protection. The vertical full body counter is mainly composed of a hardware system (including a full body measurement unit, shielding structure, electronic unit, etc.) and supporting software. It can measure the whole body with gamma rays (60-2000keV), automatically analyze the measurement results, and provide information on the types and activities of radioactive nuclides in the body. Can provide the accumulated dose received by the human body in the presence of confirmed contamination by radioactive isotopes. The vertical full body counter uses two large volume NaI (Tl) detectors as detection units, and adopts a self-developed low resolution gamma spectroscopy dedicated analysis algorithm to achieve fast and high accuracy in measurement. In addition, the carefully designed measurement and management software system enables operators to achieve "one click" measurement and easily perform data storage, data query, data export, report printing and other operations.

Vertical full body counterProduct Parameters:

❑ Measurement location: Whole body

Measurement type: X, gamma rays

Energy range: 60~2000keV

Measurement geometry: standing upright

Detector type: NaI (Tl)

Detector size: 4L

❑ Number of detectors: 2 pieces

Digital gamma spectrometer: 256-2048 channels, suitable for whole-body counters with 512 or 1024 channels.

Counting range: 0~108

Resolution (FWHM): ≤ 7.5% (661.65keV)

Shield thickness: 10cm (steel)

Typical measurement time: 1 minute

❑ Minimum detectable activity (MDA): Provide no more than 150Bq (Co-60) of MDA to the human body within the shielding body (slightly different depending on the background conditions of the surrounding environment)

Total weight: 4500kg

❑ Dimensions: 150 × 100 × 240cm (length × width × height)

Power supply: AC 220V ± 10%, 50Hz ± 10%

❑ Supporting software: Simple InVivo-S

Vertical full body counterProduct Features

High detection efficiency: Two large volume NaI (Tl) detectors arranged longitudinally can cover the main trunk of the human body, achieving high whole-body detection efficiency in standing geometry;

❑ Optimized spectral analysis algorithm: For the gamma spectrum of NaI (Tl) detector under live measurement, corresponding peak finding, base subtraction/background compensation, peak area fitting and other algorithms have been specially developed to achieve full process automated analysis;

One click operation: The carefully designed software system can achieve full automation from energy spectrum acquisition to data analysis and dose estimation;

❑ Rapid monitoring: The channel type shielding structure, array type probe distribution, and integrated software system can meet the needs of rapid personnel monitoring, and can continuously monitor about 40 people per hour;

❑ Other: Fixed upright measurement geometry can save space, modular shielding structure and detector components are easy to disassemble, and voice prompts are convenient and fast.

Vertical full body counterMain functions:

◼ Personnel information input: Provide manual input and card reader automatic input modes;

◼ Energy spectrum display, automatic calibration and analysis functions;

◼ Automatic spectral analysis: An automated spectral analysis algorithm has been developed for NaI type measurement systems, which can accurately analyze heavy and weak peaks;

◼ Automatic reporting of measurement results: After the measurement is completed, a report is automatically generated, including nuclide types, activities, and single nuclide doses;

◼ Selection of nuclide types: Provide dose calculations for all internally irradiated nuclides corresponding to GB18871-2002;

◼ Intake type selection: Three intake modes are provided, including ingestion, inhalation, and wound intake;

◼ Compound type selection: Provide F/M/S compound types that match the standards;

◼ Calculation of effective dose to be accumulated: The user provides the nuclide name, ingestion time, ingestion type, and compound type for automated calculation;

◼ Retention function display: At the same time as dose calculation, display the curve of the retention amount of the nuclide in the body over time after self ingestion;

◼ Historical data query: Users can query all historical measurement results based on measurement date, measurement type, personnel name, and other conditions, and can conduct reanalysis;

◼ The backend database type is SQLite, which can run on the Chinese Windows 7/10 operating system platform, meet the requirements of using JDBC tools to access the database, and can use SQL statements for complex conditional queries and operations. The system database provides a complete database structure table that includes data types and formats, and provides the function of exporting personnel measurement reports for easy data extraction and archiving.

◼ User information management: Users are divided into three levels: "super administrator", "administrator", and "ordinary user", each with software usage permissions from high to low; The management page provides the ability to modify and save login user information, while also allowing users to modify low-level user permissions and information;

◼ Export and Print: Provides export and printing of energy spectrum data, analysis results, and query results.

◼ Other: The system settings function can control the parameters of the counter and display the measurement progress in real-time during the measurement process.