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During subway security screening, regular batteries can pass, but large-capacity battery devices are prohibited.
1. Article 36 of the “Urban Rail Transportation Operation Management Regulations” states:
Passengers are prohibited from carrying toxic, harmful, flammable, explosive, radioactive, corrosive and other objects dangerous objects. that may endanger the safety of people and property are authorized to enter the station or board the bus. The operating unit must, in accordance with the regulations, publish the list of prohibited and restricted items in urban rail transportation in a conspicuous place at the station.
2. The “Notice Prohibiting the Transportation of Electric Bicycles and Equipment"large-capacity battery in the subway" clearly states that it is prohibited to carry batteries, batteries and other large-capacity battery equipment as well as electric bicycles equipped with charging modules into the station. If a passenger is found using a power bank, they must be arrested immediately.
Detailed information:
Safety Inspection Procedures
1. Baggage inspection: When passengers enter the subway lobby, they first put their luggage on the conveyor belt of the X-ray security inspection equipment, and the staff checks it through the monitor. If foreign objects are found, the package must be opened and inspected by the inspector.
If there are prohibited items, security personnel have the right to require passengers to be transferred to another means of transportation.transport or abandon prohibited items expressly prohibited by public security organs. They may be inspected and relevant records must be inspected. be retained. Those who refuse to obey the safety inspection. People in serious circumstances may be referred to public security organs. Thank you very much for your patience in monitoring, please adopt it if it helps and wish you a happy life! THANKS!
How harmful is the radiation from the X-ray thickness gauge?
Lithium-ion batteries are harmful to the human body.
The most harmful thing is the electrolyte solution. The electrolyte is a volatile organic liquid and is obviously corrosive. Long-term inhalation of volatile gases can cause damage to the respiratory tract. Cause respiratory illness.
Lithium-ion batteries emit certain radiation because they containcadmium, which can cause osteoporosis.
The work environment can contain many harmful elements. Some mercury elements are relatively common, and there are other lead elements. Causes heavy metal-related illnesses.
Like all chemical batteries, lithium-ion batteries are made up of three parts: a positive electrode, a negative electrode and an electrolyte. The electrode materials are all lithium ions which can be intercalated (inserted)/deintercalated (deintercalated).
Lithium-ion battery electrolyte solution
Solute: Lithium salts are often used, such as lithium perchlorate (LiClO4), lithium hexafluorophosphate (LiPF6) and lithium tetrafluoroborate (LiBF4). Solvent: Since the operating voltage of the battery is much higher than the decomposition voltage of water, lithium-ion batteries often use solvents oorganic, such as ether, ethylene carbonate, propylene carbonate, diethyl carbonate, etc.
Organic solvents often destroy the structure of graphite during charging, causing it to delaminate and form a solid electrolytic interphase (SEI) on its surface, leading to passivation of the electrodes. Organic solvents also pose safety concerns such as flammability and explosiveness.
The positive electrode materials of lithium batteries include lithium cobalt oxide LiCoO2, ternary material Ni+Mn+Co, lithium manganate LiMn2O4 as well as a conductive agent and an adhesive, which are coated on an aluminum foil to form a positive electrode, and the negative electrode is layered with graphite plus a conductive agent and an adhesive are coated on the copper foil base tape. So far, the most advanced negative electrode layered graphite particleshave adopted nanocarbon.
References:
The X-ray thickness gauge is a type of X-ray fluorescence spectrometer (as shown below) and usually has radiation exemption certification. You can ask the other party to provide it to you along with the instrument.
X-ray thickness gauge
X-ray fluorescence spectrometer is a commonly used instrument for elemental analysis and chemical analysis. It uses X-ray fluorescence technology to measure various elements contained in samples. and chemical composition. During the working process of the X-ray fluorescence spectrometer, the X-ray source will produce a certain amount of X-rays. These X-rays have high energy and can cause certain radiological damage to the human body. Therefore, when using a spectrometerX-ray fluorescence, you need to pay attention to radiation protection issues.
According to the "National Measures for the Classification and Management of Radiation Devices", X-ray fluorescence spectrometers belong to class III radiation devices and must apply for radiation protection authorization and be included in the scope monitoring application. Subject to compliance with laws and regulations in force, X-ray fluorescence spectrometers may be exempt from management. More specifically, the following situations can be exempted from the radiation protection management of X-ray fluorescence spectrometers:
The model and specifications of the exempted X-ray fluorescence spectrometer comply with current national regulations, have obtained a exemption certificate, and are used in strict accordance with the instructions provided by the manufacturer's operating procedures.
The radiation level of the spectrometer at fExempt X-ray fluorescence complies with relevant national regulations, and tests have proven that its radiation dose is lower than the national limit.
The place of use of the exempted X-ray fluorescence spectrometer complies with the requirements of relevant laws and regulations and has been approved by the local environmental protection department.
It should be noted that when managing exemptions, relevant laws, regulations and operational procedures must be followed to ensure radiological safety. At the same time, the management of exemptions does not completely exempt responsibilities and obligations regarding radiation protection. User units must nevertheless take radiation protection measures to ensure the safety of personnel.