**Chapter 8 143**

Reliability Evaluation of Power Systems *by Abdullah M. Al-Shaalan*

## **Chapter 9 169**

Microgrid System Reliability *by Razzaqul Ahshan*

Preface

*maintenance*, and *availability* (RMA) are considered as forming the core part of the contemporary reliability engineering discipline. Indeed, system engineers and logisticians may be regarded as being the primary users of the methods and techniques in RMA. However, because of continuous automation and acknowledging the fact that computers and microchips find their way into countless modern-day applications, products, and systems, which in turn require increased levels of RMA, the latter impact their associated lifecycle costs and their usefulness. Hence, reli-

Thus, the term *reliability*, although having a number of definitions, is generally accepted to refer to the degree to which a system, product, or component performs its intended functions under stated conditions for a specified period of time without

*availability* are also used to describe in the former case the probability of a system, product, or component to be repaired in a defined environment within a specified time period and that the repaired system, product, or component in the latter instance is readily operational/functional. The American Society for Quality, as well as the International Standards Organization, among other renowned bodies provide

Amid a plethora of challenges, the most important one being ongoing climate change, systems engineering areas will be called upon to deliver products and offer services to boost a higher degree of reliability, maintainability, and availability, placing an emphasis on designing for reliability and postproduction management systems.

The first chapter introduces a contemporary maintenance strategy in line with the ISO 55000 series of asset management standards. The latter may be regarded as the successor to Publicly Available Specification PAS55 of the British Standards Institution. The suggested strategy was validated in electric power generation systems and

The advantages of condition-based maintenance over scheduled maintenance regarding the safety and lifetime cost of an aircraft fuselage are discussed in the

Meta-action units as the basic analysis and control unit concerning computer numerical-controlled machines are presented in the next chapter, which also por-

A number of surrogate modeling methods have been introduced to reduce modelspecific evaluation time and are applied in cases in which the outcome of interest

failure. In addition to the above definition, the terms *maintainability* and

In today's highly automated and digitalized world, the terms *reliability,*

ability techniques are equally applied to hardware and software.

detailed and area-specific definitions.

transport vehicles.

second chapter.

This book comprises nine chapters split in two sections.

The first section discusses maintenance models and policies.

trays an overview of the respective reliability technology.
