The classification of dangerous goods (2)

Class 7 radiation substance present <br> <br> goods item refers radioactive articles, such as radium, uranium and the like.
(1) Low specific activity radioactivity a, ores containing natural radionuclides (such as uranium) and their concentrates b, unirradiated solid natural uranium, depleted uranium and natural thorium, and their solid or liquid Compounds and mixtures c, solids in which radioactive substances are evenly distributed within a solid solid binder, etc. (2) Surface contaminants This item refers to radioactive articles such as radium, uranium, etc.
7.1 Low-specific activity radioactive material a. Ores containing natural radionuclides (such as uranium) and their concentrates b, unirradiated solid natural uranium, depleted uranium and natural thorium, and their solid or liquid compounds and Mixtures c, solids in which radioactive material is uniformly distributed in a solid solid binder, etc. 7.2 Surface contaminants 7.3 Fissionable substances 7.4 Special forms of radioactive substances (5) Radioactive substances other than the above categories are all other forms of radioactive substances > <br> class 8 corrosive <br> means of the present type of goods can burn and cause damage to body tissue such as a metal of solid or liquid goods. Visible necrosis occurs in contact with the skin within 4 hours, or at a temperature of 55° C., the uniform annual corrosion rate of the surface of No. 20 steel exceeds 6.25 mm/a solid or liquid.

This category of goods is divided into three categories based on chemical properties:
8.1 Acid corrosion products (eg sulfuric acid, hydrochloric acid, nitric acid, hydroiodic acid, perchloric acid, phosphorus pentoxide, phosphorus pentachloride)
8.2 Alkaline Corrosion Products (eg sodium hydroxide, methyl lithium, lithium aluminum hydride, sodium borohydride)
8.3 Other Corrosives [eg: uranyl acetate, potassium cyanide]

Category 9 Miscellaneous 9.1 Miscellaneous Substance Category RMD This group of substances also includes: Aviation Regulated Solid or Liquid (Aviation Regulated Solid or Liquid), that is, those that are irritating, dislike, or otherwise sufficient to cause extreme aversion to aviation crews. Or discomfort, unable to perform its duties.
Asbestos, Garlic Oil, Life Saving Equipment, Internal Combustion Engines, Vehicles 9.2 Polymer Beads Category RSB
Semi-processed polymer material, injecting flammable gas or liquid as a foam; emits a small amount of flammable gas.
9.1 Miscellaneous Material Category RMD
This group of substances also includes: Aviation Regulated Solid or Liquid (Aviation Regulated Solid or Liquid), that is, substances that are irritating, disgusting or otherwise capable of causing aviation crew members to become extremely disgusted or uncomfortable and unable to perform their duties. .
Asbestos, Garlic Oil, Life Saving Equipment, Internal Combustion Engines, Vehicles 9.2 Polymer Beads Category RSB
Semi-processed polymer material, injecting flammable gas or liquid as a foam; emits a small amount of flammable gas.
9.3 Solid Carbon Dioxide (Dry Ice) Category ICE
Solid carbon dioxide/dry ice has a temperature of -79.C. When dry ice is dissolved, it releases oxygen and cold air. Dry ice must be handled with special care.
9.4 Magnetic Material Category MAG
Any material, measured at a distance of 2.1 m from any point on the air/package surface, shall have a magnetic field strength equal to or greater than 0.159 A/m or 0.002 Gauss.
Large-scale ferromagnetic metals that do not conform to the definition of magnetic substances shall be shipped/sent according to the special loading requirements of aircraft users, so as to avoid affecting aircraft instrumentation; individual substances or their packages do not conform to the definition of magnetic substances, but the overall package may affect aircraft instruments. with.