It seems like only a few days since the second edition of this handbook was completed; however, in the five years that have passed, amazing things have happened in the world of safety. First, the 2000 edition of NFPA 70E has become the 2004 edition with a multitude of changes.
Second, the electrical world seems to have become much more aware of the hazards of electricity and has started to embrace many, if not all, of the more modern safety requirements, such as flash-hazard evaluations. Finally, companies throughout the world are starting to gear up to provide enhanced safety programs for their personnel and work in teams to achieve that goal.
The Electrical Safety Handbook has continued to receive remarkably broad acceptance in the electrical safety world, perhaps because it is the only independent reference source for all of the various aspects of electrical safety. With this in mind, we have expanded virtually all of the previous chapters in this edition as well as added a brand new chapter covering the safety aspects of electrical maintenance.
We truly hope that the increased detail in the old chapters and the addition of the new chapter will be met with the same enthusiasm as the previous edition. Chapters 1, 2, and 3 continue to serve as the central core of the book, by presenting the case for electrical safety (Chapter 1), a broad coverage of electrical safety equipment (Chapter 2), and a detailed coverage of electrical safety procedures (Chapter 3).
The changes in Chapter 3 should be of special interest to the reader since we have updated the arc energy calculations to be consistent with new industry innovations as introduced in IEEE Standard Std 1584 and NFPA 70E. Chapter 4 has been revised to include references to the 2005 edition of the National Electrical Code (NEC).
Additional information has also been added that includes ferroresonance. Chapter 4 continues to provide a detailed overview of the general requirements for grounding and bonding electrical systems and equipment. This chapter also provides some needed explanations, illustrations, and calculations necessary for applying the requirements of NEC Article 250 as well as OSHA 29 CFR 1910.304(f).
It should be emphasized, however that this chapter is not intended to replace or be a substitute for the requirements of the current NEC or OSHA regulations. Always utilize the most current standards and regulations when designing, installing, and maintaining the grounding systems within a facility. Chapter 5, new to this edition, introduces a broad coverage of safety-related maintenance concepts.
The chapter is not intended to be a maintenance reference, rather it introduces the economic and safety-related reasons for performing maintenance on an electrical power system. We also introduce the current philosophies on good maintenance including discussions of topics such as reliability-centered, predictive, preventive, and condition-based maintenance.
Finally, the chapter covers the eight broad steps of a good maintenance program and introduces a cross section of maintenance and testing procedures for a variety of electrical equipment. Chapter 6 (Chapter 5 in the second edition), updates the previous coverage on the consensus and mandatory standards and regulations in the workplace.
Also included are explanations of several of the general industry OSHA regulations, which are quoted directly from the Federal Registers preamble as well as the Directorate of Compliance documents. The specific information reprinted from OSHA has been updated to the most recent versions as of the date of this publication.
As before, the reader should always refer to the OSHA publications (available at www.osha.gov) for the most recent information. Chapter 7 (Chapter 6 in the second edition) has been expanded and rewritten in several key ways. New information, addressing the relationship of proper engineering and safety, has been added showing the reader how they can engineer safety hazards out of existence. Also, the section on first aid and CPR has been brought more up-to-date.
In Chapter 8, a statistical survey of electrical injuries and fatalities is added. Details about the possible medical scenarios following exposure to electrical hazards are included to assist the reader in appreciating how survivors of a multivictim electrical incident may share an event, but not necessarily the same effects to their bodies.
Graphs and tables, new to the handbook’s third edition, give quick summaries of enhanced information. Figures are presented to explain the basic principle that injury results with the transformation and transfer of energy. Chapters 9 and 10 (Chapters 8 and 9 in the second edition) have been updated with new information taken from Chapters 2 and 3. As before, these two chapters serve as a quick reference to the reader for low-, medium-, and high-voltage safety.
Added to the topic of human factors now found in Chapter 11 is a historical perspective. Insights regarding human factors engineering developed within the civilian nuclear power industry are also included. Chapter 12 (Chapter 11 in the second edition) has been updated to include information garnered from the collective experience of the authors since the second edition was published.
Of special importance is the material covering the interrelationships among management, labor, and legal counsel. Chapter 13 (Chapter 12 in the second edition) has a significant new section covering a method to develop a training that will provide a more consistent and compliant safety program. By using tried and tested educational methods, the new sections show the reader in a step-by-step manner how to create their training program.
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