The branch of engineering which deals with the application of different sub-atomic processes based on the principles of nuclear physics is known as nuclear engineering. The two primary sub-atomic processes, which are dealt within this field are fission and fusion. Fission refers to the breaking down of atomic nuclei while fusion refers to the combining of atomic nuclei. The field of nuclear fission deals with designing, maintaining and interacting with components and systems like nuclear weapons and nuclear reactors. It also involves the study of medical and other applications of radiation, especially ionizing radiation, heat/thermodynamics transport, nuclear fuel, nuclear safety, and the problems of nuclear proliferation. The topics included in this book on nuclear engineering are of utmost significance and bound to provide incredible insights to readers. The various studies that are constantly contributing towards advancing technologies and evolution of this field are examined in detail. This book will serve as a reference to a broad spectrum of readers.