Vessel Internals Manufacturers

Vessel internals provide the structural support for the core and fuel located within the reactor vessel. It also provides for the alignment of the core with instrumentation. It serves as a shield to protect the reactor vessel from radiation damage. It is fabricated from austenitic stainless steel. It is comprised of two basic components: core support barrel assembly and upper guide structure assembly. In addition to the two assemblies, the vessel internals include a flow skirt. The flow skirt is a cylindrical structure having a large number of holes and located between the core support barrel and lower head of the reactor vessel.