Who can request an exception for welding repair limits on a heat exchanger?

A master license holder is authorized to request an exception for welding repair limits on a heat exchanger because they possess a higher level of training and expertise in the field. Master license holders understand the complexities and regulations surrounding repair and maintenance work, including welding procedures. This level of certification typically entails extensive knowledge of relevant codes, safety standards, and technical specifications, equipping them to make informed decisions on exceptions that could significantly impact the safety and functionality of heating systems.

Moreover, this requirement helps ensure that any deviations from standard repair practices are handled by someone with the appropriate experience and understanding, thereby maintaining the integrity of the systems involved and protecting public safety.