No Contamination.

X-ray equipment does not just exist in medicine. Therefore, not only bones and teeth are “x-rayed”, but also oils and other materials. Read more in this article.

When it comes to radioactivity, our first thought often is nuclear power. More rarely we think of X-rays. Despite medicine being hardly conceivable without diagnostics using modern X-ray equipment.

X-ray technology is also used in other areas. For example, in plastics production. “X-ray devices” are used here to measure the viscosity (flowability) of oil so that it is correct during the production process. Or later the residual moisture in the plastic produced this way.

We can reassure whoever is now worried that the plastic could be contaminated by the nuclear radiation: The radioactive material that is used here has a low dose rate and very short decay time, so any hazards are completely ruled out.

Each measuring unit consists of a transmitter (the emitter) and a receiver. The transmitter emits a weak dose of nuclear radiation, which is measured by the receiver. The material between the transmitter and the receiver, in our example the oil i.e., modifies the signal depending on how warm it is. Therefore, the ideal temperature and degree of flow for further processing can be regulated.

The transmitter contains a lead-shielded, low-level radioactive core. It must be replaced from time to time. This is a task for the specialists at SAT Kerntechnik, because you have to be trained and equipped in radiation protection technology for this. Even though such a radiometric measuring system is nonhazardous in operation, an unprotected core is a potential safety hazard.

To exchange the core, a so-called “lead castle” is built around the transmitter unit. It consists of leady matte and enables the replacement of the core without nuclear radiation emitting uncontrollably in all directions. The disassembly of the “emitters” is done by the specialists at SAT Kerntechnik. The exchange of the actual radiation source, the core, is usually performed by the manufacturer, in this case the experts at Berthold Technologies.

In addition to radioactivity, there are further challenges: Some emitters weigh 750 kg, are installed in high altitudes or are difficult to access. Every exchange is different, the conditions vary, and the creativity of the SAT nuclear technology experts is always challenged anew.

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