Posts

Hazardeous Area Classification & Myths

Image
Hazardous Area Classification is a critical subject in the safety role. Most of the time it is confused with the activity and responsibility. This is a vital element that needs the EHS head's attention to ensure a safe operation in the plant premises. It is very important that both electrical and chemical expertise work together for hazardous area classification and eliminate the risk. Lets us carefully explore different myths and challenges in the Hazardous Area Classification. 1Q.What is the guidance on the classification of hazardous areas? During normal and abnormal operations, electrical and electronic equipment such as motors, generators, fuses, switches, relays, circuit breakers, transformers, solenoids, and resistors produce the amount of heat, arcing, and sparking that causes a fire or explosion in industries, factories, or other locations where chemicals are manufactured, processed, or used. Because of the presence of flammable, ignitable gases, combustible or liquid

Arc Flash Hazard Analysis / Risk Assessment

Image
  1. What are the steps involved in Arc Flash Analysis? A. Arc Flash Hazard Analysis or Risk Assessment is a study conducted by trained safety experts to analyze electric equipment and power systems in order to predict the amount of incident energy from an arc flash. According to IEEE std 1584, there are 9 steps involved in this Arc Flash Analysis, which we are going to discuss here. Step 1: Collect the system’s installation data: The largest effort in an arc-flash hazard study is collecting the data from the site. Start by reviewing the one-line diagrams and electric equipment, site, and layout arrangement with people who are familiar with the site. The diagrams have to be updated to show the current system configuration and orientation before the arc-flash study starts. The one-line diagrams must have all alternate feeds. If SLDs are not ready, prepare them.              Once the diagrams are completed in the basic electric system scheme, enter  the data needed for the short