The invention discloses nuclear-grade equipment and a single-side shielding material filling
insulation layer for pipelines. A insulation outer box, a
neutron shielding layer, a gamma shielding layerand
metal reflective foils are included, the
neutron shielding layer, the gamma shielding layer and the
metal reflective foils are contained inside the insulation outer box, and the
neutron shieldinglayer and the gamma shielding layer are both made of an inorganic shielding material with metallic properties; the sequence of
filling in the thickness section of the
insulation layer is an inner shell plate of the insulation outer box, the neutron shielding layer, the gamma shielding layer, the
metal reflective foils and an outer shell plate of the insulation outer box; and the metal reflective foils are in shapes of
waves of positive and negative
circular cone bosses regularly arranged vertically and horizontally at intervals, and every two adjacent
layers of the metal reflective foils are stacked in a back staggered manner with the peak of one positive and negative
circular cone boss abutting against the peak of the other positive and negative
circular cone boss. The composite metal
insulation layer with the insulation and heat isolation functions and the screen
radiation shielding function is provided, the insulation layer can be used in a high temperature
radiation environment fora long time without replacement, and the requirements of
nuclear grade equipment and the insulation layer for the pipelines are met