What is the main duty of a Journeyman Plumber?

The main duty of a Journeyman Plumber is to handle plumbing projects independently under the supervision of a Master Plumber. This role signifies that the individual has completed the necessary training, gained experience, and possesses the skills to perform a variety of plumbing tasks effectively. Journeyman Plumbers are capable of installing, repairing, and maintaining plumbing systems, as well as ensuring that all work complies with local codes and standards.

In contrast, overseeing apprentices is a role that typically falls more directly under the responsibilities of a Master Plumber or experienced Journeyman, rather than being the primary duty of a Journeyman themselves. While maintaining plumbing systems is part of a Journeyman's skillset, it does not fully encapsulate the breadth of their responsibilities, which includes managing entire projects. Conducting plumbing inspections is usually a duty reserved for licensed inspectors or Master Plumbers rather than Journeyman Plumbers. Thus, the role of a Journeyman Plumber centers around executing plumbing work independently, making option B the most accurate description of their main duty.