The book "Design of earthing devices ORU power stations and substations" by B. N. Mazurkevicha is a unique publication that will become an indispensable assistant for specialists in the field of electrical engineering, engineers and students of specialized universities. In a world where the safety and reliability of electrical systems play a key role, this handbook highlights important aspects of grounding design that are the basis for protecting both people and equipment from possible electrical accidents. In his book, Mazurkevich shares his deep knowledge and practical experience gained over the years in this field. The author not only outlines the theoretical aspects of design, but also offers readers practical recommendations based on real examples from his practice. This makes the book especially valuable for those who seek not only to study the theory, but also to put it into practice. The book covers a wide range of topics, ranging from the basics of designing grounding devices to modern methods of calculating and selecting equipment. Mazurkevich examines in detail the different types of grounding systems, their design features and application in the conditions of various power stations and substations. The reader will be able to learn about the principles of operation of grounding devices, their role in ensuring safety, as well as about modern technologies used in this area. This publication will be of particular interest to engineers working in the field of energy, as well as technical students who want to deepen their knowledge in the design of electrical systems. The book is suitable for both beginners and experienced professionals who want to update their knowledge and get acquainted with new methods and approaches. The topics raised in the book are of great importance for modern society, where the reliability of electricity and the safety of people are in the first place. Mazurkevich emphasizes the importance of proper design of grounding devices to prevent accidents and ensure the stable operation of electrical systems. This makes the book relevant not only for specialists, but also for anyone interested in energy security issues. The author's style is distinguished by clarity and accessibility of presentation, which allows the reader to easily assimilate complex technical concepts. Mazurkevich also uses many illustrations and diagrams that help to visualize the material and make it more understandable. This is especially important for readers who prefer visual perception of information. In addition, B. N. Mazurkevich is the author of other well-known works in the field of electrical engineering, which confirms his authority and professionalism. His books are often recommended for study both in educational institutions and in professional circles, which indicates the high quality and relevance of his works. If you are looking for a book that will help you understand the intricacies of designing grounding devices and improve your skills in the field of electrical engineering, “Designing ORU grounding devices of power stations and substations” will be an excellent choice for you. This is not just a training manual, but a real find for everyone who aspires to professional growth and wants to be one step ahead in his career.