Small Modular Reactors

Glossary

Brayton cycle:

Thermodynamic cycle used for the generation of electricity in which a heated gas is driving the electric turbogenerator

BWR:

Boiling water reactor

Eutectic:

A mixture of two metals in liquid state (e.g., Pb-Be)

HPM:

Hyperion Power Module, a SMR designed by the GEN-IV Energy, a privately owned company

IMSR:

Integral Molten Salt Reactor, a SMR designed by Terrestrial Energy, a Canadian company

LWR:

Light water reactor

mPower:

A SMR designed by B&W

NuScale:

SMR designed by the NuScale Power company

PRISM:

Power Reactor Innovative Small Module, a SMR designed by GE Hitachi

PWR:

Pressurized water reactor

SMR:

Small modular reactor

Super-Safe, Small, and Simple (4S):

SMR designed by Toshiba and the Central Research Institute of Electric Power Industry of Japan

TWR:

Traveling wave reactor, a SMR designed by the TerraPower company

Introduction

A small modular reactor (SMR) is one with electrical output of 300 MWe or less (research reactors are not considered SMR and are...