Red Seal Boilermaker Practice Exam

The primary function of a manway in a boiler is to allow for access for inspection and maintenance inside the boiler. Manways are designed openings that provide personnel with the ability to enter the boiler for routine maintenance, repairs, and inspection processes to ensure the safe operation of the system. Access through manways helps in cleaning, troubleshooting, and performing necessary repairs on internal components, which are vital for the efficient and safe functioning of the boiler. Regular maintenance and inspection through manways can prevent potential failures and enhance the overall longevity and performance of the boiler system.

Other options such as providing means for automatic firing systems, serving as a pressure relief outlet, or regulating temperature do not accurately represent the main purpose of a manway. These functions are typically handled by different components or systems within the boiler setup.