Ensuring the vessel won't fail under static pressure.
All primary welds typically require 100% radiographic (RT) or ultrasonic (UT) examination, unlike Div 1 where spot RT may suffice. asme section 8 div 2 pdf
If you need multiple sections or editions, consider a subscription. ASME Section 8 Division 2: A Comprehensive Overview
He stopped. There was a provision, often overlooked, for triaxial stress states. If he could prove that the triaxial strain limit wasn't exceeded, he could justify the localized yielding. BPVC Complete (All Sections): Approximately $8,000/year