(a) If an examination required for the issuance of a license, registration, or endorsement under this chapter contains a practical component, the board shall employ or contract with one or more plumbing examiners to administer that portion of the examination. A plumbing examiner must:
(1) hold a license as a plumber issued under this chapter;
(2) be knowledgeable of this chapter and municipal ordinances relating to plumbing; and
(3) be qualified by experience and training in plumbing practice.
(b) A plumbing examiner shall:
(1) examine the fitness and qualifications of a person applying to the board for a license as a master plumber, journeyman plumber, tradesman plumber-limited license holder, or plumbing inspector; and
(2) promptly certify the result of the examination to the board.