JTEx Engineering Service Co., Ltd (JTEx) is a company based in Bangkok, Thailand. As realized that several industrial processes are produced, used, or stored of flammable or combustible substances, most electrical, instrument, and mechanical equipment are known as one of the common ignition sources which may cause fire and explosion in such environment. These types of equipment must be highly considered when they are designed, selected, installed, operated, and maintained within potentially explosive atmospheres throughout their whole life cycle.

Not only equipment is required to concern but also people who work with Ex equipment, as well as those who work within or related to hazardous areas must possess the proper knowledge, skills, and competencies…