How is access to the double-bottom tanks usually provided for inspection, cleaning, maintenance, and repairs of tank interiors?

Correct Answer: Option B — Gasketed and bolted manholes associated with the inner plating (tank tops).

Access to double-bottom tanks is mandatory for inspection and maintenance. Gasketed and bolted manholes located on the inner bottom plating (tank tops) provide the required entry points, ensuring that internal structural members, piping, and tank coatings can be safely accessed by personnel during routine surveys.