What covers pressure vessels operating above 15 psig?

• A. Section I
• B. Section VIII Division 2
• C. Section VIII Division 1
• D. Section V

Answer: (C)

ASME codes organize coverage by sections, and pressure vessels that operate above a modest threshold are governed by the pressure vessel section. For vessels that run above 15 psig, the standard path is Section VIII, Division 1. This division contains the design, fabrication, examination, and testing requirements most commonly applied to pressure vessels in the field.

Section I is reserved for power boilers and related equipment, which is a different category of boilers rather than typical pressure vessels. Section VIII, Division 2 exists as an alternative set of design rules intended for more rigorous or specialized cases, but it is not the default path for ordinary vessels. Section V deals with nondestructive examination and testing, not the fundamental design and fabrication rules.

So, the correct coverage for pressure vessels operating above 15 psig is Section VIII, Division 1.