This book makes Hazardous or Electrical Area Classification simple. In plants processing flammable materials, every effort is made to avoid the escape of such materials and in addition, stringent measures are taken to exclude sources of ignition. A complex array of standards surround this topic which has lead to an overly conservative approach being taken. This type of approach means that much more expensive electrical apparatus than is necessary is installed.
To avoid this unnecessary expenditure, Dr Groh clearly explains the relevant standards, so that accurate assessment of the risks associated with hazardous areas is possible. He also identifies possible ignition sources and methods of designing apparatus which do not cause sparks thereby maintaining safety.
* Covers must-have information regarding IEC/CENELEC standards in electrical or hazardous area classification
* Provides a clear overview of a complex area
Table of Contents
* Cover
* Frontmatter
o Half Title Page
o Dedication Page
o Title Page
o Copyright
o Contents
o Preface
o Acknowledgements
* Chapter 1. Basic principles of explosion protection
o 1.1 Introduction
o 1.2 Sources of ignition
* Chapter 2. The classification of hazardous areas
o 2.1 Basic principles
o 2.2 Examples of the classification of hazardous areas
o 2.3 Explosion protection for zone 0
o 2.4 Explosion protection for zone 2
o 2.5 Explosion protection for electrical apparatus in the presence of combustible dusts
* Chapter 3. Standards for electrical apparatus and systems in zone 1
o 3.1 National standardization and approvals
o 3.2 Standardization in Europe European Standards and Directives
o 3.3 The new approach Directive 94/9/EC
o 3.4 The IEC world
* Chapter 4. Grouping and classification of explosion protected electrical apparatus
* Chapter 5. Marking and selection of explosion protected apparatus
* Chapter 6. The different types of protection constructional requirements
o 6.1 General requirements
o 6.2 Oil immersion
o 6.3 Powder filling
o 6.4 Pressurized apparatus
o 6.5 Encapsulation
o 6.6 Special type of protection
o 6.7 Increased safety
o 6.8 Flameproof enclosure
o 6.9 Intrinsic safety
* Chapter 7. Analysers and analyser rooms
o 7.1 Pressurized enclosures with an internal release of flammable substances
o 7.2 Pressurized enclosures in zone 2 and for use in the presence of combustible dusts
o 7.3 Analyser rooms manned pressurized enclosures?
* Chapter 8. Testing explosion protected electrical equipment
o 8.1 Tests for flameproof enclosures
o 8.2 Partial discharge (PD) measurements
o 8.3 Testing intrinsic safety of electrical circuits
* Chapter 9. Financial considerations selecting explosion protected electrical equipment
o 9.1 Mains-operated light fittings in zone 1
o 9.2 Motors and generators
o 9.3 Switchgear assemblies and frequency convertors
o 9.4 Remote controlling and monitoring, data transmission and communication
* Chapter 10. Inspection, maintenance and repair of explosion protected equipment
* Chapter 11. Explosion protected apparatus for zone 0 and zone 2
o 11.1 Apparatus for zone 0
o 11.2 Apparatus for zone 2
* Chapter 12. Cable protection in coal mines and other areas hazardous due to combustibles
o 12.1 Principles of cable fault detection
o 12.2 Cable protection by rapid-acting switchgear with electrodynamic linear drives
* Bibliography
* Index

 

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