The scope and terminology differences between the Zone concept and the Division concept for hazardous area classification are discussed.
The answer to the question How are roadways addressed in a hazardous area classification assessment? is given in two parts. The first part gives the history of why this question is asked and the second part provides the answer to…
The definition of a point source of release is given and some examples provided for a Class I location.
The answer to the question When do new chemicals in the process change the overall T Code? is given via a show and tell example.
The Temperature Class (T Code) is defined by NFPA 70®, the National Electrical Code (NEC). The steps to determine the T Code for a material is presented via a show and tell example.