Radiation Protection
Radiation protection in buildings
The precautionary protection against radiation of technical origin is becoming more and more significant. The fact that the danger and risks for humans is not yet sufficiently scientifically investigated leads to uncertainty and is, at the same time, a reason for the development of protection measures.
Radiation protection in buildings pertains to protection against electromagnetic waves or even radioactive radiation.
Electromagnetic radiation
Electromagnetic fields are classified into different types according to their frequency, field intensity and signal form. The area from around 10 kHz to around 300 GHz is of particular relevance, as this area includes the operational frequencies of radio waves, television, mobile phone radio waves and radar
Investigations by Prof. Dr.-Ing. Pauli of calcium silicate bricks of the apparent density class 1.8 with d = 24 cm show , an attenuation of shielding of 38 to 60 %, even in the frequency range of 200 to 800 MHz. The higher the attenuation of shielding is, the higher the protection. KS Thermoskin (calcium silicate with WDVS) performs more favorably in this respect, as the application of electromagnetically compatible reinforcement fabric in the external plastering of the KS Thermoskin, the attenuation of shielding is increased to 99%.
The precautionary protection against radiation of technical origin is becoming more and more significant. The fact that the danger and risks for humans is not yet sufficiently scientifically investigated leads to uncertainty and is, at the same time, a reason for the development of protection measures.
Radiation protection in buildings pertains to protection against electromagnetic waves or even radioactive radiation.
Electromagnetic radiation
Electromagnetic fields are classified into different types according to their frequency, field intensity and signal form. The area from around 10 kHz to around 300 GHz is of particular relevance, as this area includes the operational frequencies of radio waves, television, mobile phone radio waves and radar
Investigations by Prof. Dr.-Ing. Pauli of calcium silicate bricks of the apparent density class 1.8 with d = 24 cm show , an attenuation of shielding of 38 to 60 %, even in the frequency range of 200 to 800 MHz. The higher the attenuation of shielding is, the higher the protection. KS Thermoskin (calcium silicate with WDVS) performs more favorably in this respect, as the application of electromagnetically compatible reinforcement fabric in the external plastering of the KS Thermoskin, the attenuation of shielding is increased to 99%.
Radioactive radiation
The necessary thickness is determined according to DIN 6812. The "equivalent lead layer thickness" is dependent on the apparent density and the thickness of the building material as well as the maximum tube voltage.
Protection against radioactive radiation is of particular relevance in the area of medical technology. DIN 6812 is applicable for building structural radiation protection. The determination of the necessary shielding (lead layer thickness) is dependent on the useful radiation, the category of the room as well as the distance between the focal spot and the room to be protected according to the individual device.
The shielding effect of materials other than lead is reported as equivalent lead layer thickness. The equivalent lead layer thickness describes how thick a protection layer of another material, e.g. calcium silicate, must be in order to attain the same shielding effect.
The equivalent lead layer thickness should be determined at a homogenous cross section. If hollow blocks are used, the wall thickness at the least favorable point is relevant. Therefore, the use of KS solid blocks is recommended. Due to the fact that, according to DIN V 106, solid blocks may possess a hollow percentage of up to 15 % of the stacking area it is recommended that specify the hole pattern. Gripping recesses and pin holes are to be filled and butt joints are to be mortared.The necessary thickness is determined according to DIN 6812. The "equivalent lead layer thickness" is dependent on the apparent density and the thickness of the building material as well as the maximum tube voltage.
