Training reactor VR-1

Reactor vessels

The reactor vessel marked H01 hosts the reactor core with the fuel and with control rods. The vessel is designed to reactor operation. The reactor vessel market as H02 is designed for manipulation purposes. Experiments can be prepared here, fuel assemblies can be placed here. Both vessels are identical, a grommet for radial and tangential channels are only in the H01 vessel. The vessels are fabricated from stainless steel. The vessel may be interconnected by the steel gate that is manipulated by crane.

Reactor vessels H01 and H02 cross-section

Reactor vessels H01 and H02 cross-section

Reactor inside equipment is made from stainless steel as well, only the reactor core slab is made from aluminum. This equipment is in both vessels, the H01 is equipped also by the reactor core basket and the control rods lines. The reactor core slab is the heaviest inside part of the reactor vessels, the fuel tails are putted into. Also hydraulic drag of control rods and vertical channel fixating tails are put into.

The reactor core basket is a light construction which gives the shape to the core. Upper parts of fuel assemblies are fixed with so-called rulers – stainless steel prisms. The steel grid is filling the area of the vessels (in elevation at the bottom of the core) and it is useful during manual manipulation inside the vessels. Also special experimental devices can be fixed here. Above the water level, there is a holding system for control rods and vertical channels. It is a heavy steel construction placed just above the core. Only the H01 is equipped with such a system. Operation and measurement tube system is fixed on the sides of the vessels; it is used to maintain the water and to control the water quality and temperature.

Only the H02 vessel is equipped with a temporary fuel assembly storage, which is surrounding the sides of the vessel at the same elevation as the reactor core is. Construction of the temporary storage is projected to avoid the criticality at all ever possible situations. All fuel assembly pins can be locked independently. The temporary storage system, as well as the reactor core, is filled by fuel elements manually.

© DNR FNSPE CTU in Prague, 2017