What code contains recommended rules for the care of nuclear power plant boilers?

The code that contains recommended rules for the care of nuclear power plant boilers is ASME Section III. This section specifically addresses the construction and safety standards for nuclear facilities and includes regulations for the design, materials, fabrication, testing, and operation of nuclear components and systems, including boilers.

ASME Section III ensures that the specific requirements of nuclear applications, particularly concerning safety and reliability, are met. It also includes guidelines on maintenance practices and in-service inspections, which are critical for ensuring the ongoing safety and efficiency of nuclear boilers during their operational life. This context validates that ASME Section III is the appropriate and authoritative guideline for professionals working in nuclear power plant settings, distinguishing it from the other sections, which cover different aspects of mechanical engineering standards or other types of boilers and pressure vessels.