Since 2021, we have been manufacturing calcium-free insulation elements, especially for high-temperature insulation of engines and turbines. In an increasing number of industrial plants, power stations, and combined heat and power plants, traces of the carcinogenic and mutagenic heavy metal compound calcium chromate are being found after insulation has been dismantled. These traces are found both on the dismantled equipment, such as engines and gas or steam turbines, and on the inner surfaces of the insulation elements. ... Calcium chromate (CaCrO4), a chromium(VI) compound, can form when chromium components (chromium(III) compounds) from the alloy of the surface to be insulated react with calcium oxide (CaO) under thermochemical conditions within a temperature range of 300°C to 750°C. Calcium oxide is a component of almost all commercially available insulating fabrics and materials. It is released through aging and mechanical stress, thus acting as an unintended accelerator (catalyst) for the high oxidation of trivalent chromium compounds to hexavalent chromium compounds (calcium chromate), which are classified as carcinogenic and chronically harmful to the environment. The consequences are toxic dust deposits on the equipment and respirable fine dust particles in whitish or yellowish form, which require special and costly cleaning. Additionally, contaminated insulating elements must be disposed of professionally as hazardous waste requiring special labeling. Employers, insulation companies, and service companies for Turbine overhauls (gas and steam turbines) and overhauls of combined heat and power (CHP) engines and cogeneration plants (biogas, etc.) must ensure that the formation of carcinogenic substances, such as chromium(VI) compounds, is reduced or ideally prevented when using insulation systems and materials that currently contain calcium. Substitution is mandatory according to the globally applicable "S-T-O-P" principle, where "S" stands for substitution. The belief that materials that generate carcinogenic and, above all, acutely harmful substances during their use can continue to be used as long as adequate protection is taken is not consistent with international occupational safety and environmental protection regulations. Every user is obligated to minimize the risk of harm to people and the environment. Failure to comply with occupational safety regulations, particularly the failure to conduct a risk assessment or maintain an exposure register, can result in serious consequences. Fines are imposed, and the shutdown of the construction site or service operation is also possible. Environmental pollution, such as the failure to comply with local waste disposal regulations, can in the worst case even lead to imprisonment, as calcium chromate is classified as "H410 - acutely toxic substance with long-term consequences for the water industry." Unfortunately, many insulation processing companies ignore this dangerous issue, so it repeatedly happens that installation personnel are exposed to the health hazards without being informed and, above all, without protection. Since proper hazardous waste disposal is largely neglected, chromium(VI) compounds can seep into the groundwater unprotected! Kavarmat® and the Dutch company Samenwerkend Isolatiebedrijf B.V. (SIB) have therefore jointly developed Cleansulation® technology, i.e., insulation elements and systems whose components are calcium-free and thus prevent the described chemical process. These insulation mattresses and systems are made from a specially Made from a specially developed long-fiber silicate silk glass fiber called VitroSilK®, these products are highly temperature resistant up to 750°C and are also characterized by their ease of processing, extremely low dust production, and the fact that they do not cause itching. These products are manufactured from a long-fiber silicate silk glass fiber called VitroSilK®.