Civil marine reactor evolution. From OK-150 to RITM-200
Ivan Renev (a*), Alexander Renev (a), Alexander Tsibulya (a)

Rosatom Energy Projects JSC, Leninskaya Sloboda 26 bld. 5, Moscow, Russian Federation

Abstract

The RITM-200 reactor unit (RP) with a capacity of 175 MW is a fundamentally new step in the development of the icebreaker fleet. The reactor plant has a unique energy-efficient integral layout, which ensures that the main equipment is placed directly inside the steam generating unit housing.
This allows to classify the RITM-200 reactor as the 3rd generation of civil ship-class reactor unit. In contrast to the 2nd generation of reactor plants (OK-900 and KLT-40), in the 3rd generation a transition was made from a block layout to an integral one.
New engineering solutions made it possible to implement the strict restrictions on weight and size characteristics laid down in the technical specifications. Thanks to the integrated layout, the RITM-200 reactor turned out to be twice lighter, one and a half times more compact and 25 MW more powerful than the KLT-40 reactor units.
The RITM-200 nuclear power plant is capable of ensuring more economical operation of the new nuclear icebreaker compared to existing ones
with increased reliability and safety. The improvement of the reactor plant proceeded in the following directions:
- Reducing the composition of equipment and its weight and size characteristics
- Increased maneuverability
- Increasing equipment life
- Reduction of own energy consumption

Keywords: SMR, FPU, RITM, KLT-40

Topic: Innovative Nuclear Energy Systems