Remaining working reliability of vertical fired heater with simultaneously used RBI matrix

This paper deals with the reliability of a vertical gas heater installed in an oil and gas plant, which has been in continuous operation for an extended period. It provides a classification of fired heaters based on their construction characteristics and outlines their role within the gas rectification process, including the types of equipment involved. The general construction of the heater is described, along with key design and operational process parameters. The paper also identifies damage mechanisms that affect this type of equipment. A risk-based inspection analysis was conducted, and an risk-based inspection matrix was developed, indicating that the equipment falls into the high-risk category in terms of both financial consequences and environmental impact.