Radioactive thin layer scannerIt is a high-precision analytical instrument that combines nuclear technology and chromatographic separation principles, mainly used to detect and analyze the distribution of radioactive substances in thin layer materials (such as filter paper, silica gel plate, polymer film, etc.). The core principle is to use the alpha, beta, and gamma rays released during the decay of radioactive isotopes, which are converted into electrical signals through detectors such as scintillation counters and semiconductor detectors. These signals are then processed and image reconstruction algorithms are used to generate two-dimensional or three-dimensional radioactive distribution images. This device can accurately determine the radiochemical purity of radiopharmaceuticals, ensuring effective separation of radioactive and non radioactive components in the drug. It also supports purity analysis of target products in reaction mixtures, such as drug intermediates labeled with isotopes such as ¹² ⁵ I and ¹⁷⁷ Lu.
Radioactive thin layer scannerCombining nuclear technology and chromatographic separation principles, it is mainly used for detecting and quantifying the distribution of radioactive labeled substances in samples. Its maintenance needs to take into account equipment characteristics and safety regulations, and can be carried out from the following aspects:
1、 Safety protection regulations
Lead shielding device: A lead shielding device that meets national standards must be equipped to reduce the impact of radiation leakage on operators and the environment.
Personal dose monitoring: Operators are required to wear personal dosimeters and undergo regular occupational health checks to ensure that radiation exposure is within a safe range.
2、 Daily maintenance process
Detector calibration: Use a standard source for energy calibration verification every month to ensure accurate identification of energy characteristic peaks of different nuclides by the detector and improve detection accuracy.
Software upgrade: Timely update the spectral analysis algorithm library to adapt to the new nuclide database and enhance the equipment's detection capability for new radioactive substances.
Consumables disposal: Consumables containing radioactive contamination should be classified and collected in dedicated containers, and handed over to certified units for cement solidification or incineration treatment. It is strictly prohibited to directly discharge them into ordinary garbage systems to prevent the spread of radioactive contamination.
3、 Environmental and Operational Management
Environmental temperature and humidity control: Keep the temperature of the equipment usage environment between 0 ℃ and 40 ℃, avoid placing the equipment near heating, air conditioning, or humidifiers, and prevent extreme changes in temperature and humidity from affecting equipment performance.
Dust prevention measures: Try to use the scanner in a location that is not easy to absorb dust, keep the surface and interior of the equipment clean, and reduce the wear and tear of optical and mechanical transmission components caused by dust.
Avoid vibration: Place the device on a stable horizontal support surface, avoiding proximity to vibration sources such as computer cases, printers, etc., to prevent vibration from affecting scanning accuracy.
4、 Component maintenance and replacement
Key component inspection: Regularly inspect the wear and tear of key components such as detectors, replace them in a timely manner based on their service life and performance, and ensure the normal operation of the equipment.
Lubrication and maintenance: Regularly lubricate the mechanical transmission parts of the equipment, such as sliding rods, gear sets, etc., to reduce wear, reduce noise, and extend service life.
Belt adjustment: Check the tightness of the transmission belt and adjust the belt adjustment components according to the scanning situation to ensure stable and reliable belt transmission.
5、 Power management
Stable power supply: Connect the scanner to a qualified uninterruptible power supply to prevent rapid power changes from damaging the equipment. After using an uninterruptible power supply for a period of time, pay attention to replacing the internal battery in a timely manner to ensure power supply stability.
Correctly cut off the power: When not in use for a long time, cut off the power and unplug the direct insertion power converter from the power socket to avoid the scanner light tube being continuously on and shorten its service life. At the same time, avoid frequent switching of the scanner to prevent damage to the equipment.
6、 Fault handling and emergency response
Professional maintenance: When encountering equipment failure, do not disassemble or repair it without authorization. It should be sent to the manufacturer or designated repair station for maintenance to ensure the quality of maintenance and equipment safety.
Emergency response plan: Develop emergency response plans and formulate corresponding measures for possible equipment failures or radiation accidents. Regularly organize emergency response drills for staff to improve their ability to respond to unexpected events.
7、 Archive Management and Evaluation
Maintenance file: Establish a maintenance file to record the maintenance status of equipment, including maintenance time, content, personnel, and other information, for timely tracking and management.
Performance evaluation: Regularly evaluate equipment performance to ensure that all parameters and indicators of the equipment meet the standards, ensuring the accuracy and reliability of the test results.