For a single boiler installation, where is an ASME code stamp required?

In a single boiler installation, an ASME code stamp is required on the section of piping that goes from the boiler outlet to the first stop valve. This is because the ASME (American Society of Mechanical Engineers) code sets standards for the design, manufacturing, and installation of boilers and piping systems to ensure safety and reliability.

The portion of piping between the boiler outlet and the first stop valve is critical because it carries the steam or hot water directly from the boiler to the system. This section must adhere to the strict standards established by the ASME to handle the pressures and temperatures experienced in this part of the system. The ASME code stamp signifies that the material and construction of the piping have been reviewed and approved to meet these safety standards.

While other components, like safety valves and parts of piping leading to secondary valves or water columns, are regulated by ASME codes, the most critical area requiring the stamp is between the boiler and the first stop valve, as it is part of the main discharge path directly from the boiler. This ensures that operators and inspectors can verify that the installation meets the safety and performance criteria established for high-pressure boiler systems.