Category Archives: Handbook of Small Modular Nuclear Reactors

Argentina: Central Argentina de Elementos Modulares (CAREM) design

The Central Argentina de Elementos Modulares (CAREM) design has been under development for a number of years and was first introduced at an IAEA conference in 1984. The Comision National de Energfa Atomica (CNEA) drew on its experience in the design of research reactors to develop CAREM with the primary goals of enhanced safety and reduced costs. It is a […]

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Handbook of Small Modular Nuclear Reactors

For the reader interested in small modular reactors (SMR), this Handbook provides a thorough and authoritative introduction to today’s hottest new development in nuclear plant design and deployment. Building on the success of the large nuclear plants, SMRs offer the potential to expand the use of clean, reliable nuclear energy to a broad range of customers and energy applications.

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United States: Power Reactor Inherently Safe Module (PRISM) design

The US Advanced Liquid-Metal Reactor (ALMR) program in the 1980s resulted in the design of the 160 MWe Power Reactor Inherently Safe Module (PRISM) sodium — cooled reactor. The PRISM design was one of the first advanced reactor designs to employ significant use of passive safety features and was designed as a power module to be used in multiple three-unit […]

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People’s Republic of China: ACP-100 design

The ACP-100 is an integral pressurized water reactor being developed by the Nuclear Power Institute of China (NPIC) for the China National Nuclear Corporation (CNNC). The design draws heavily on technology developed by CNNC for the larger LWR plants, including the CNP-600 and the ACP-600/1000. The forced circulation of the primary coolant is driven by externally mounted reactor coolant pumps. […]

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Small modular reactors (SMRs) for producing nuclear energy: an introduction

N. Todreas Massachusetts Institute of Technology, Cambridge, MA, USA 1.1 Introduction Just what are small modular reactors (SMRs)? This question is first answered simply along with a brief history of the evolution of this class of reactors. Subsequent sections detail the incentives and challenges to achieving successful commercial deployments, the different types of SMRs based on coolants employed, and, finally, […]

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United States: W-SMR design

In 2011, Westinghouse introduced a new SMR design, the W-SMR. It is rated at 800 MWt with an expected electrical capacity of greater than 225 MWe. The W-SMR design draws heavily from Westinghouse’s AP1000®[1] design experience, although it uses an integral primary system configuration rather than the traditional loop-type configuration used for the AP1000® plant. Except for eight external, horizontally […]

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Operational reliability

Certainly this criterion is best met by reactor concepts using conventional components and systems operating at coolant temperatures and pressures within the envelope of significant operating experience. Water as a coolant for SMRs has been selected explicitly because of the satisfaction of these conditions. Experience with water reactors using the essential design features selected for water-cooled SMRs goes back to […]

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Integral pressurized-water reactors (iPWRs) for producing nuclear energy: a new paradigm

M. D. Carelli Formerly of Westinghouse Electric Co.,Pittsburgh, PA, USA 3.1 Introduction Over 60 years ago nuclear power has been ushered into mankind, representing a quantum change which rivals and potentially surpasses those of the combustion engine and electricity. It has advantages and disadvantages, proponents and detractors, just like any other human endeavor. The underlying puzzle is why other innovations […]

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