Which pressure vessel weld category has the highest amount of stress?

Which pressure vessel weld category has the highest amount of stress?

• A. Category A
• B. Category B
• C. Category C
• D. Category D

Answer: (A)

This question tests how weld categories relate to the stress a pressure vessel weld must withstand. Weld categories group joints by the severity of service conditions they’ll experience, including pressure, temperature, and how the loads cycle. The category that corresponds to the most demanding service is the one where the weld is expected to endure the highest stresses, so it carries the strictest design, fabrication, and inspection requirements. In this set, that highest-stress category is the one described as handling the greatest loads, so it’s chosen as the correct option. The other categories describe progressively less demanding conditions with lower stresses, hence they are not the highest-stress choice.

This question tests how weld categories relate to the stress a pressure vessel weld must withstand. Weld categories group joints by the severity of service conditions they’ll experience, including pressure, temperature, and how the loads cycle. The category that corresponds to the most demanding service is the one where the weld is expected to endure the highest stresses, so it carries the strictest design, fabrication, and inspection requirements. In this set, that highest-stress category is the one described as handling the greatest loads, so it’s chosen as the correct option. The other categories describe progressively less demanding conditions with lower stresses, hence they are not the highest-stress choice.