This book gives the reader a guide to understanding the requirements of the various codes and regulations that apply to the design, construction and operation of facilities using hazardous materials in their processes. It applies to semiconductor and other facilities utilizing hazardous materials. On-going revisions in code requirements, changes in technology, and changes in the use of a facility all demand that everyone involved with the design or operation of a hazardous occupancy understands code provisions. The guidelines discussed in this book go beyond minimum standards for design and operation to ensure good engineering practices are employed to address the many safety, health and other issues that pertain to any hazardous occupancy facility: exit corridors, air handling systems, life safety alarm systems, fire suppression, chemical delivery routes, chemical storage, etc. The text is organized by facility system, consolidating the provisions of each code to that particular system. It also provides code excerpts, explanatory diagrams, tables and photos to help illustrate the application of codes. Use of this book will save the user countless hours of searching and uncertainty in his quest to understand the legal requirements. Proper interpretation of the codes governing these facilities requires an understanding of the context and interaction of the standards. William R. Acorn, the author, explains these codes, applying years of practical experience in the design of code compliant facilities. The result is an informative, useful handbook for everyday use... a must for Facilities Owners, Managers, Designers and users of hazardous occupancies.