Explosion Protection

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Elsevier, 18 dic 2003 - 544 pagine
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
 

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Sommario

1 Basic principles of explosion protection
1
2 The classification of hazardous areas
27
3 Standards for electrical apparatus and systems in zone 1
51
4 Grouping and classification of explosion protected electrical apparatus
99
5 Marking and selection of explosion protected apparatus
109
6 The different types of protection constructional requirements
119
7 Analysers and analyser rooms
423
8 Testing explosion protected electrical equipment
432
9 Financial considerations selecting explosion protected electrical equipment
456
10 Inspection maintenance and repair of explosion protected equipment
472
11 Explosion protected apparatus for zone 0 and zone 2
485
12 Cable protection in coal mines and other areas hazardous due to combustibles
493
Bibliography
511
Index
517
Copyright

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Pagina 29 - Zone 20 in which combustible dust, as a cloud, is likely to occur during normal operation, in sufficient quantity to be capable of producing an explosive concentration of combustible dust with air.
Pagina 30 - A place in which an explosive atmosphere in the form of a cloud of combustible dust in air is present continuously, or for long periods or frequently.
Pagina 30 - A place in which an explosive atmosphere consisting of a mixture with air of dangerous substances in the form of gas, vapour or mist is present continuously or for long periods or frequently. Zone 1 A place in which an explosive atmosphere consisting of a mixture with air of dangerous substances in the form of gas, vapour or mist is likely to occur in normal operation occasionally.

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