We often see the question in the major forums and Tieba how strong magnets can bring on the plane, what measures need to be done. What are the packaging requirements? Today, we strong permanent magnet manufacturer- China Rare Earth Magnet Limited would like to talk to you in detail.
The International Air Transport Association (IATA) lists magnetic cargo as a category 9 hazard, which must be restricted at the time of shipment, because a weak stray magnetic field has the interference of the aircraft's navigation system and control signals. So now some of the cargo with magnetic substances in the air needs to be magnetically tested in order to ensure the normal flight of the aircraft. Magnetic testing is carried out on magnetic materials, acoustic materials and other instruments containing magnetic accessories.
Magnet Air Transport Standard. According to the relevant provisions of IATA902, if the maximum magnetic field strength measured at 2.1m from the measured object does not exceed 0.159A/m (200nT, that is equal to 2mGs =0.002Gs), the item is not restricted as a magnetic substance and can be treated as a general cargo.
If the maximum magnetic field strength measured at 2.1m from the measured object exceeds 0.159A/m, but the strength of any magnetic field at 4.6m from the surface of the measured item is less than 0.418A/m, the goods can be transported as dangerous goods.If the strength of any magnetic field at 4.6m above the surface of the measured item is greater than 0.418A/m, the item is strictly prohibited for air transport.
How can the cargo meet the air transport standard?
In order to meet the above air transport requirements, degaussing treatment is needed. Although called demagnetization, it is not to demagnetize the magnet. Instead, it is through special shielding packaging, so that the external display of the magnetic package to meet the required aviation safety transport requirements. Shielded packaging will generally use high magnetic materials, such as cold-rolled plate, galvanized plate, if the size of permanent magnetic material is big, it will need multi-layers package. The conductivity of high magnetic conducting material is very high. According to the Faraday electric cage principle, magnetic field will circulate mainly in the box after package, so there is little magnetism leaking out. Cartons or wooden box packaging will be used after shielding package.
Packaging matters for magnets transported by air should be concerned.
1, Magnetron, illuminometer and other instruments, devices, the opposite magnetic pole must be relatively placed.
2, Permanent magnets must do the shielding package, in order to prevent the magnetic field from causing the deviation of the compass instrument.
3, Ensure that before the shipment, the field strength measured from the surface of the package 4.6 meters (15 feet) is not more than 0.418A/m (0. 00525 Gauss).
4, It is recommended a large cargo should use wooden box packaging.
Magnetic detection. Airlines or logistics companies that carry magnetic materials require customers to do magnetic testing to ensure the normal flight of the aircraft. On-site testing by qualified professional identification company professionals, and then issued a appraisal report. Magnetic testing needs customers to pack goods according to air transport requirements. Detection will not destroy the packaging of goods. In principle, the test is not open to the goods, but the six sides of each piece of goods for stray magnetic field detection. If the goods magnetic test is not qualified, they will be returned to repacking, and then re-do magnetic testing. Magnetic inspection fees also need to be re-charged.
If you have any other questions about magnets, please feel free to contact us.
Tags: permanent magnets
The International Air Transport Association (IATA) lists magnetic cargo as a category 9 hazard, which must be restricted at the time of shipment, because a weak stray magnetic field has the interference of the aircraft's navigation system and control signals. So now some of the cargo with magnetic substances in the air needs to be magnetically tested in order to ensure the normal flight of the aircraft. Magnetic testing is carried out on magnetic materials, acoustic materials and other instruments containing magnetic accessories.
Magnet Air Transport Standard. According to the relevant provisions of IATA902, if the maximum magnetic field strength measured at 2.1m from the measured object does not exceed 0.159A/m (200nT, that is equal to 2mGs =0.002Gs), the item is not restricted as a magnetic substance and can be treated as a general cargo.
If the maximum magnetic field strength measured at 2.1m from the measured object exceeds 0.159A/m, but the strength of any magnetic field at 4.6m from the surface of the measured item is less than 0.418A/m, the goods can be transported as dangerous goods.If the strength of any magnetic field at 4.6m above the surface of the measured item is greater than 0.418A/m, the item is strictly prohibited for air transport.
How can the cargo meet the air transport standard?
In order to meet the above air transport requirements, degaussing treatment is needed. Although called demagnetization, it is not to demagnetize the magnet. Instead, it is through special shielding packaging, so that the external display of the magnetic package to meet the required aviation safety transport requirements. Shielded packaging will generally use high magnetic materials, such as cold-rolled plate, galvanized plate, if the size of permanent magnetic material is big, it will need multi-layers package. The conductivity of high magnetic conducting material is very high. According to the Faraday electric cage principle, magnetic field will circulate mainly in the box after package, so there is little magnetism leaking out. Cartons or wooden box packaging will be used after shielding package.
Packaging matters for magnets transported by air should be concerned.
1, Magnetron, illuminometer and other instruments, devices, the opposite magnetic pole must be relatively placed.
2, Permanent magnets must do the shielding package, in order to prevent the magnetic field from causing the deviation of the compass instrument.
3, Ensure that before the shipment, the field strength measured from the surface of the package 4.6 meters (15 feet) is not more than 0.418A/m (0. 00525 Gauss).
4, It is recommended a large cargo should use wooden box packaging.
Magnetic detection. Airlines or logistics companies that carry magnetic materials require customers to do magnetic testing to ensure the normal flight of the aircraft. On-site testing by qualified professional identification company professionals, and then issued a appraisal report. Magnetic testing needs customers to pack goods according to air transport requirements. Detection will not destroy the packaging of goods. In principle, the test is not open to the goods, but the six sides of each piece of goods for stray magnetic field detection. If the goods magnetic test is not qualified, they will be returned to repacking, and then re-do magnetic testing. Magnetic inspection fees also need to be re-charged.
If you have any other questions about magnets, please feel free to contact us.
Tags: permanent magnets
