Update: The ebook publisher Abhisam, has informed us that the ebook has been withdrawn, due to changes in the standards and is now offered as the Abhisam Hazardous Area Classification training course. It also includes a free associated exam and certification of competency in hazardous area management. Covers classification as per NFPA (NEC) as well … Read more
Ever wonder why Acetylene is classified under Group IIC of the IEC’s explosive material classification system (equivalent to Group A of the NEC material classification)? Why is it classified as much more explosive as compared to say, Methane? Rather than launch into the theory of explosivity and other such things, wouldn’t it be nice to … Read more
In today’s blog post we will review a much-misunderstood explosion protection concept, which is Intrinsic Safety. We will present a very brief overview below. As usual intelligent comments are always welcome through the Comments form! Introduction In the early 19th century the mining industry was a major employer. Unfortunately, it also had the largest number … Read more
This is the question that many people ask themselves. There are so many standards and practices, so different from each other. You have the Class, Division & Group classification in North America and the Zone and Group system in Europe, Asia and Australia. The NEC also talks about Zones in Article 505 and there is … Read more
On Feb 4th, 2009, on the first anniversary of the dust explosion that took place at the Imperial Sugar factory, the US Chemical Safety Board released a video message. In the video (see below) the CSB chairman John Bresland asks federal regulators and businesses to increase efforts at preventing combustible dust fires and explosions. For … Read more
