This paper presents a container inspection method and apparatus using cobalt-60 γ digital radiography technology

which was proposed and realized by the Institute of Nuclear Energy Technology (INET) of Tsinghua University. In this kind of inspection system

the radiation source is a conventional radiography 60Co projector of 3-11TBq. This projector is reliable

save and cheap

but its radiation output is several hundred times weaker than accelerator’s. With the special sensitive array detector invented by INET and the advanced signal and image processing technology

the characteristics of this inspection system are equivalent to those of expansive accelerator type inspection system

but much cheaper

safer

more reliable and easier to operate and maintain. This paper illustrates the main project idea

construction

principle and characteristics of 60Co container inspection system. The situation of its production

serialization and application are mentioned too.