A novel restoration procedure for heat exchangers recovering from severe damage

Heat exchangers are critical stationary equipment in oil and gas processing plants. Following abnormal events such as fire, explosion, mechanical impact, or severe degradation, restoration requires a systematic engineering assessment to determine integrity and safe return to service. This paper presents a restoration methodology based on industry practices including API 579-1/ASME FFS-1, API 510, ASME Section VIII, and TEMA practices. The approach integrates inspection, material evaluation, fitness-for-service assessment, repair strategy, and controlled reinstatement.