ABSTRACT
This chapter examines in detail new developments in smaller modular nuclear reactors (SMR) worldwide and points out all the benefits of SMR for nuclear energy recovery and its conversion for power generation. Small modular reactors are a type of nuclear fission reactor which are smaller than conventional reactors, and manufactured at a plant and brought to a site to be fully constructed. Advances in electronics support the development of magnetic bearings and introduce the possibility of other innovations, such as a high-speed turbo-generator with high-power frequency converter. The power conversion system includes a vertical heat exchanger vessel and a horizontal turbo-machine vessel to allow for bearing support and stable rotor operation. The development of the modular pebble-bed reactor is being addressed based on preliminary research into future energy options by MIT student work beginning in 1998. The gas turbine plant continues to be the primary focus of international HTGR development.
