Manufacturing Skill Standards Council (MSSC) Safety Assessment Practice Test

Which device requires a certified welder and re-certification after the weld?

1. Oil tanks

2. Pressure rated devices

3. Frames with seams over 5 inches

4. Automobile frames

The correct answer is: Pressure rated devices

The requirement for a certified welder and re-certification after the weld is especially critical for pressure-rated devices because these devices operate under high internal pressures that can make them hazardous if not constructed correctly. The integrity of the weld is vital in such applications, as any failure could lead to catastrophic results, including leaks or explosions. Certified welders possess the necessary skills and knowledge to execute welds to meet specific standards and safety regulations. The re-certification serves to ensure that the welder's skills remain up to date with current practices and technological advancements in welding processes, materials, and safety measures. This ongoing certification is part of a rigorous quality assurance system to maintain the reliability and safety of pressure-rated devices throughout their service life. In contrast, while other options may have safety considerations, they do not have the same stringent requirements as pressure-rated devices, which are subject to specific regulatory standards due to the dangers involved.