[Explanation] In mid-January 2021, in the CT room of a hospital in Lanzhou, Chen Qilin, a radiation tester for civil nuclear equipment from the post-95s generation, and team members placed the plastic head mold on the CT bed, inserted the metal wire, adjusted the equipment and quilt At the inspection site, perform cross-sectional scanning to detect whether the radiation dose meets the national standards.

　　Chen Qilin said that CT and other civil nuclear technology application equipment is standardized before leaving the factory, but it is unknown whether there are loopholes under long-term operation. Therefore, detection is particularly important.

　　[Concurrent] Chen Qilin, radiation inspector for civil nuclear equipment

　　The patient will definitely be exposed to the dose, (we guarantee) that (the patient accepts) the minimum dose and the reasonable dose will be taken for him.

In addition, there will be scattering when the patient is illuminated. If it is scattered, it will also irradiate the surroundings of the computer room. We also want to prevent this scattering, and the extra rays will affect the outside world.

　　[Explanation] Communication base stations, CT detectors... Civil nuclear technology application equipment has been closely related to life and production.

For the general public, nuclear radiation has a sense of mystery, so there is anxiety about "talking about nuclear discoloration".

　　Chen Qilin, who has been in the business for 5 years, told reporters that radiation is a kind of energy that is difficult for people to feel, but it is everywhere in the environment.

Whether there is any change in environmental radiation and whether it exceeds the standard, technicians need to conduct dynamic detection.

Therefore, they need to keep in mind the key data in the national standard, so that they can draw up a "physical examination sheet" for related equipment, display the "red light" of the equipment data, and stop maintenance in time to protect the health of the people.

　　[Concurrent] Chen Qilin, radiation inspector for civil nuclear equipment

　　Just like the irradiated light field, the deviation is not less than 1 cm. A value of 1 cm like this must be remembered because it is an important point for judging whether the index is qualified or not.

　　[Explanation] How can inspectors whose work is closely related to radiation ensure their safety?

Jiang Aiqing, who has been in the business for 10 years, said that when the equipment is running, they will be in a safe place and will not be exposed to radiation.

At the same time, they will wear personal dosimeters for regular testing.

In addition, they will also predict the working environment in advance and wear protective clothing as appropriate.

　　As a senior practitioner, Jiang Aiqing witnessed the application of nuclear technology extending from military industry to the field of people's livelihood, and also witnessed the process of precision and localization of testing instruments.

　　[Concurrent] Jiang Aiqing, a radiation inspector for civil nuclear equipment

　　(Scope of application of nuclear technology) From the former military industry to the present, the increasingly popular industry, agriculture, medical treatment, scientific research, and teaching, each industry has been involved and penetrated.

In the past, most of the testing equipment was imported.

Now, the accuracy of domestically-made equipment is getting higher and higher, and the difference and gap with imported (equipment) is also getting smaller.

Except for some (equipment), most of the domestic equipment we use is also very easy to use.

　　Ai Qinglong and Yan Jiao report from Lanzhou, Gansu

Editor in charge: [Wang Kai]