What must welded repairs and alterations made to boilers comply with according to the codes and standards?

Welded repairs and alterations made to boilers must comply with the original Code of construction when the boiler was built. This ensures that any modifications or repairs adhere to the same safety standards and engineering principles that were applicable at the time of the boiler's original manufacture. Adhering to the original Code helps maintain the structural integrity and reliable operation of the boiler, which is crucial for both safety and efficiency.

The significance of this compliance lies in the fact that boiler Codes are developed based on extensive research and historical data about materials, design, and performance criteria, which are pivotal for preventing failures. Ensuring that any welding or alterations are executed according to the original Code of construction is essential in providing a consistent and safe operational framework for the boiler throughout its lifecycle.