Which organization oversees the National Boiler Pressure Vessel Code for pressure vessels?

The organization that oversees the National Boiler Pressure Vessel Code is the American Society of Mechanical Engineers (ASME). ASME is responsible for developing and maintaining various codes and standards, including those related to pressure vessels and boilers. The National Boiler Pressure Vessel Code provides guidelines to ensure the safety, reliability, and performance of pressure vessels across various applications. This oversight by ASME ensures that professionals in the field adhere to consistent safety standards, which are critical for preventing accidents and maintaining operational efficiency in facilities that utilize pressure vessels.

The other organizations mentioned, while they may provide valuable resources or focus on different aspects of engineering and safety, do not have the same authority or direct involvement in the regulation of the Boiler Pressure Vessel Code. In particular, IIAR focuses on industrial ammonia refrigeration safety, RETA is centered around refrigerant management and safety training, and NUILPE is more involved in the education of licensing professionals. Each of these organizations serves important roles, but ASME is the primary governing body for the specific regulations concerning pressure vessels.