Subhash Reddy Gaddam has been associated with design, development, engineering, project execution, manufacturing, and commissioning of pressure vessels and boilers of various types and capacities for over 50 years. He is a 1970 graduate in Mechanical Engineering from Osmania University, College of Engineering. Starting as a graduate trainee with the Indian subsidiary of the Babcock & Wilcox Ltd., U.K., where he worked on the shop floor and construction site in the commissioning of a 120MW boiler, he spent over a decade in design and engineering of industrial and power boilers at various large industries in India. He then joined the Andhra Pradesh State Government as Inspector of Boilers until his retirement as the Director and Head of the Department of Boilers in 2006. He is currently an adviser for mechanical design of pressure vessels, heat exchangers and waste heat boilers at Thermal Systems (Hyderabad) Pvt. Ltd. This book has been painstakingly compiled over the past several years and contains deep technical insights from his experience spanning 50 years. He has personally developed worksheets for design calculations of all types components of pressure vessels & boilers described in this book.