(a) Any duly organized fire company or substation (outside the City of Wilmington) may provide for the appointment of not more than 6 of its members to perform police duties at fires, fire drills and any emergencies or functions covered by the fire company for a term to be fixed by the fire company.
(b) The members selected by the fire company as fire police shall, before entering upon their duties, qualify by taking and subscribing an oath that they will justly, impartially and faithfully discharge their duties according to the best of their ability and understanding. The oath shall be administered by the sheriff of the county in which the fire company making the appointment is located and shall be subscribed by the member appointed as a fire police officer in duplicate. The original copy of the oath shall be filed with the sheriff of the county in which the fire company making the appointment is located and a copy thereof filed with the secretary of the fire company making the appointment.