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12. The Production and Transmission of High Purity Gases for the Semiconductor Industry / R. Galbraith -- 13. Materials for Services Pipework / T. Hodgkiess.
This is a report on an experimental cleanroom which eliminates the need for strict personnel control, special clothing, and special operational procedures. Tests to date have shown that cleanliness levels have been achieved which are several orders of magnitude better than cleanrooms of conventional design. General design features, and the results of operational tests, are described.
A self-contained and practical book providing step-by-step guidance to the design and construction of cleanrooms, appropriate testing methodologies, and operation for the minimization of contamination… This second edition has been comprehensively revised and includes extensive updates to the two chapters that contain information on cleanroom standards and guidelines. The chapter on risk management has been extensively revised, especially the section on risk assessment. Other new subjects that have been added to the various chapters are those on clean-build, determination of air supply volumes for non-unidirectional airflow cleanrooms, RABS (Restricted Access Barrier Systems), contamination recovery test methods, entry of large items into a cleanroom, glove allergy problems, and how to develop a cleanroom cleaning programme. Used for in-house training and a textbook in colleges, this volume is for cleanroom personnel at all levels. It provides novices with an introduction to the state-of-the-art technology and professionals with an accessible reference to the current practices. It is particularly useful in the semiconductor, pharmaceutical, biotechnology and life sciences industries. William Whyte is an international authority in cleanrooms, with over 45 years experience in research, teaching and consulting in the electronic, healthcare and pharmaceutical industries. He is a member of British and International standards committees writing the International Cleanroom standards, and has received numerous awards for his work in Cleanroom Technology. A comment on the first edition: "...extremely useful and helpful...very well-written, highly organized, easy to understand and follow..." (Environmental Geology, 2003)
In today’s world, where precision and purity are paramount, cleanrooms have become essential across industries ranging from pharmaceuticals to electronics manufacturing, biotechnology, aerospace, and beyond. These controlled environments are fundamental in producing high-quality products, protecting sensitive processes, and ensuring the safety of both consumers and workers. Despite their critical role, the design, operation, and maintenance of cleanrooms remain complex tasks, demanding a deep understanding of contamination control, environmental regulation, and best practices in facility management. This book, Cleanroom Design, Operation, and Maintenance: A Comprehensive Guide, is designed as a practical resource for engineers, architects, facility managers, and cleanroom personnel tasked with creating and maintaining effective cleanroom environments. Each chapter addresses a specific area of cleanroom expertise, from fundamental design principles and regulatory compliance to sophisticated HVAC systems and filtration technologies. Additionally, this guide provides real-world advice on operational protocols, staff training, and troubleshooting, along with insights into emerging trends like automation and real-time monitoring technologies. In creating this book, I sought to provide a balance of technical depth and accessibility. Whether you are new to cleanroom management or a seasoned professional looking for a detailed reference, this guide offers essential knowledge to support your work. My hope is that it will serve not only as a learning tool but as a trusted companion in the field, offering solutions and insights that can elevate the effectiveness of your cleanroom environments. Thank you for embarking on this journey toward cleaner, safer, and more efficient controlled environments. It is my belief that this knowledge will not only enhance your projects but contribute to the broader goals of safety, quality, and innovation in critical industries worldwide. Charles Nehme
This practical book provides detailed guidance on all aspects of clean room airflow, the mechanics of airflow, and how microbial contamination is carried. Ljungqvist and Reinmüller draw on years of experience in clean room design and operation. The book contains maps of the effect of human interference on unidirectional airflow and the potential for contamination. Particle challenge test methods and tracer gas detection methods are explained, and the impact and interpretation of the results obtained from these test methods are discussed. Topics include: o Dispersion of Airborne Contaminants o Contamination Risks o Wakes (including factual situations) o Open, Unidirectional Air Flow Benches (laminar flow benches) o Microbiological Assessment o Weighing Stations o Air Flow Through Openings o Mathematical Treatment of Contamination Risks o Simulation of Air Flows & Dispersion of Contaminants through Doorways in a Suite of Clean Rooms o Regulatory Requirements
A central resource of technology and methods for environments where the control of contamination is critical.
A central resource of technology and methods for environments where the control of contamination is critical.
A central resource of technology and methods for environments where the control of contamination is critical.
A central resource of technology and methods for environments where the control of contamination is critical.