What code governs the design and construction of pressure vessels?

The design and construction of pressure vessels are governed by the ASME Boiler and Pressure Vessel Code (BPVC). This code establishes the minimum requirements for the materials, design, fabrication, inspection, and testing of pressure vessels to ensure their safety, reliability, and performance under the design conditions.

The ASME BPVC is widely recognized and adopted across various industries and provides specific guidelines that address the engineering principles for pressure vessels, such as stress analysis, material properties, and safety factors. This ensures that vessels can withstand the internal pressures and environmental conditions they will encounter during their service life.

In comparison, while ASTM Standards provide specifications and test methods for materials and products, they do not specifically govern the design and construction of pressure vessels. API Specifications are tailored towards the oil and gas industry and address different equipment standards rather than solely focusing on pressure vessel design. ISO 9001 pertains to quality management systems and is not specific to pressure vessel construction or design regulations. Therefore, the correct answer illustrates the appropriate regulatory framework specifically designed for the safe and reliable operation of pressure vessels.