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A guide for plant management and technical staff on how to conduct an area classification, the process whereby the degree of exposure to explosive atmospheres for a plant area is determined… (more)



Explolabs and Certex director and explosion prevention specialist Dr Johannes Auret answers questions on explosion protected (Ex) equipment, its use, certification and regulation, among others… (more)

Dr. Johannes Auret is a director and explosion prevention specialist at Explolabs and Certex. He has a PhD in engineering, and worked for the CSIR and SABS before joining Explolabs in 2001. He is active in industry standards development and has convened various working groups. Dr. Auret has published numerous technical articles and is a regular speaker and author. Tel: 011 316-4601, He answers questions on explosion protection… (more)

The repair of equipment for use in explosive atmospheres (EEA) is based on the principle of back to norm. This may be achieved by the manufacturer or a repairer, provided the right method is followed. The choice of the edition of a standard to use for repair is a grey area; the various options are discussed and best practice is presented… (more)

The inspection of explosion protected (Ex) equipment, together with appropriate maintenance and repair, is critical for safety. This paper highlights the differences between electrical and Ex inspections and presents some solutions based on standards covering the subject and best practice from experience… (more)

The author discusses explosion protection relating to instruments installed in hazardous locations. Explosion protection is a complex subject but is rarely covered in technical syllabi. Members of the plant staff therefore have to rely on knowledge gained from published literature and some scattered courses… (more)

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