341.090.  Definitions. — 1.  The word "person" as used herein shall be construed to mean a natural person, firm, corporation, association, partnership or common law trust and shall include the owner, lessee or keeper of any building or premises or the agent thereof or building contractor engaged in the construction of any building or structure.

  2.  The term "minor repairs" shall be construed to mean repairs within the interior of any building to leaks in drains, pipes, traps and cocks, opening waste or supply pipes, traps or drains, and repairing broken fixtures or frozen pipes.  It shall not be construed to include any work involving connections to soil pipes, supply pipes, waste pipes, vent pipes or inside rain leader pipes, or the replacing or setting of any fixture, or any other installation, repair or alteration which in the judgment of the supervisor is of such a nature which if improperly installed, repaired or altered would endanger the public health.

  3.  The word "apprentice" as used herein shall be construed to mean a person learning the principles and art of installing plumbing and drainage facilities, under the personal direction and supervision of a licensed master plumber or a licensed journeyman plumber.