What is required for the applied refractory lining in thick layer, plastic installations?

For applied refractory lining in thick layer, plastic installations, it is essential that the thickness and anchorage match the specifications used in actual installations. This alignment is critical because it ensures that the performance characteristics of the installation, such as thermal resistance, mechanical strength, and stability, are maintained.

Matching the thickness helps in achieving the necessary mechanical and thermal properties required for the specific application. Inadequate thickness could lead to failure under operating conditions, leading to a premature breakdown of the lining. Similarly, proper anchorage is vital to ensure that the refractory material adheres properly to the substrate, preventing issues such as spalling or delamination that can occur if the installation does not replicate the structural supports as designed.

The other options do not uphold the necessary requirements for the integrity and performance of the lining in actual service conditions, which is why they do not provide the correct approach to thick layer, plastic installations.