Final answer:
Section 7 'Rules for Care of Power Boilers' of the ASME Code Book are guidelines designed to promote safety in boiler operation. These rules apply broadly to power boilers and are often enforced through local safety regulations.
Step-by-step explanation:
Section 7 'Rules for Care of Power Boilers' from the ASME Code Book primarily supported rules to promote safety in boiler operation. They are an important part of the ASME codes and standards, which are recognized globally for their role in ensuring the safe and reliable operation of boilers and pressure vessels. While they are not enforced by ASME directly, they are often incorporated into local regulations and laws, which makes them mandatory. These rules apply not only to large high-pressure boilers but also to a wider range of power boilers.
The ASME codes and standards serve as critical guidelines for engineers and professionals in the field of mechanical and multidisciplinary engineering. They facilitate the safe operation and maintenance of various equipment, including boilers used in nuclear power plants, as described in the reference information provided. Control rods in a pressurized water reactor, for example, use concepts in line with the ASME rules to safely manage the fission process while generating electricity.