API 662 (American Petroleum Institute standard for shell-and-tube heat exchangers)

API 662 is a professional standard established by the American Petroleum Institute that provides detailed guidelines for designing, maintaining, and inspecting shell-and-tube heat exchangers used in the oil and gas industry. These heat exchangers transfer heat between two fluids, often to improve efficiency or control temperature. The standard ensures these equipment meet safety, reliability, and performance requirements by specifying materials, construction techniques, and inspection procedures. Following API 662 helps prevent failures, prolongs equipment life, and maintains safe, efficient operations in demanding industrial environments.