Which of the following is NOT part of the layout of the Table of Contents in API 650?

• A. Materials
• B. Design
• C. Installation
• D. Inspection

Answer: (C)

The layout of the Table of Contents in API 650 is structured to comprehensively cover various aspects of welded tanks for oil storage. Key sections include significant topics such as materials selection, design principles, and inspection processes.

Installation, while an important aspect of tank construction and operation, is not explicitly defined as a standalone section within the Table of Contents. Instead, the practices and procedures for installation may be covered within the context of other sections, such as those related to design and inspection. Therefore, the answer highlights that installation does not have a dedicated section in the same manner as materials, design, and inspection, which are critical components laid out in the standard.