thermal protection device for a gamma ray detector to measure the thickness of the installation of pipe walls

摘要

according to the invention, dispozitivbul, refers to the gamma ray detector included in an installation for thermal radiation pipes against measured thickness.the device solve the problem in that, the facility to measure gamma ray detector which comprises a cavity, is executed by circulating water with a pressure detrminata,a gamma ray detector silicatic filter protects against thermal radiation, and the object subjected to the passage is surrounded by a double wall type mantle with a carrier rollercriss crossed by water at a pressure determined.