Introduction:
REN700 channel vehicle radioactivity detection system is an all-weather detection system for radioactive contamination and radiation leakage level of goods transported in trucks, containers and other vehicles through the channel. The system has the characteristics of high sensitivity, wide detection range and short response time. It can realize the functions of automatic radiation alarm, automatic data storage and automatic capture of vehicle photos. Mainly installed in nuclear waste treatment plant, steel plant, waste treatment plant, various venues, customs, ports, stations, railways, highways, airports and other important places of entry and exit.
Functional characteristics:
1. Large area plastic scintillator detector with two standard detectors
2. The volume of a single detector is 25 liters
3. The detector is modular design with 3 mm lead shield on non-detection surface.
Alarm threshold can be adjusted continuously
4. Real-time image display of vehicle passing and alarm information
5. Automatic storage of measurement logs and automatic printing of measurement reports
6. It can realize multi-point distribution and remote operation, and set up regional wireless radioactivity monitoring network.
Technical parameters:
1. Detector: 2 large area plastic scintillators with 25 liters
2. Energy range: 20 keV-3.0 MeV
3. Sensitivity: Under the background level of 0.2 mSv/h, increase 0.04 mSv/h, alarm within one second; detection probability: 99%
4. Probability of detection: 99.9%
5. Monitoring area: height: 0.1 m~3 m; width: 5 m (bilateral detector)
6. Misinformation rate: <0.1%
7. Working Temperature: -30 ~+50
8. Power supply mode: 220V/50Hz AC
9. Communication Interface: Ethernet RS485
10. Protection Level: IP65
Applications:
1. Metal smelting enterprises, scrap steel distribution centers and other entrances and exits to monitor whether vehicles are carrying radioactive substances.
2. Radioactivity monitoring at the entrances and exits of nuclear plants, nuclear facilities and nuclear power plants to prevent the spread of radioactive materials
3. Radioactive inspection of containerized vehicles and train cargo at important entry-exit ports, airports and freight yards
Instrument hardware:
1. Gamma detector: 2 plastic scintillator detectors, 25 liters sensitive volume of a single detector. Gamma detector has self-checking function.
2. Main control unit: system operation control, display system working status, alarm control and instruction.
3. Channel Occupancy Sensor: Detecting whether the vehicle to be tested enters the measurement area and monitoring the speed of the vehicle.
4. Acousto-optic alarm equipment: local and remote acousto-optic alarm, different kinds of alarm lights can effectively distinguish between over-threshold and over-speed acousto-optic alarm.
5. Video surveillance and snapping system: When radiation alarms, snap and save photos of vehicles and license plates exceeding the radiation standard.
6. Remote Monitoring Center: Through a computer as a remote monitoring platform, the local radioactive substance monitoring system can be monitored remotely by running its special software and database. The measurement results show that data storage, data statistical analysis, system control and maintenance, remote parameter setting and fault diagnosis are achieved. And so on.
Based on TCP/IP protocol, multi-point network control can be realized. The central database has the function of database management. The equipment and historical data of the center can be synchronized automatically. The monitoring data of the local radioactive material monitoring system can be stored in real time. The data of more than 15 years can be stored in the central database through 100 vehicles a day. Backing up the annual historical data can still facilitate users to query the backed up historical data after backup.
Special software:
All-Chinese application interface and manual can display data curve and threshold curve in real time.
Simultaneous display of individual detector data and multiple detector superimposed data
The number, time and speed of the current passing vehicle can be displayed in real time.
Provide edit window to input inspection conclusion for each vehicle.
Automatically store the detection records of each vehicle, including: the number of vehicle passing, the time of entering the detection channel, the time of leaving the detection channel, the speed of vehicle passing; whether to cause an alarm, the original detection data of this detection, the setting of alarm threshold parameters of this detection; if the vehicle passes through the production line. When an alarm is generated, the alarm type and alarm level can be added on the basis of the detection record.
Statistical analysis function of historical records, can be based on different conditions (such as whether to detect, whether to alarm, etc.) for record query, statistics, chart analysis, etc.