(1) “Commissioner” means the commissioner of commerce and insurance;

(2) “Department” means the department of commerce and insurance;

(3) “Division” means the division of fire prevention;

(4) “Extinguisher specialist” means an individual who is or is designated to be in active and responsible charge of the work of installing or servicing portable fire extinguishers or installing or servicing fixed fire extinguisher systems;

(5) “Extinguisher technician” means an individual who may perform the work of installing or servicing portable fire extinguishers or installing or servicing fixed fire extinguisher systems and who services portable extinguishers or fixed systems only under direct supervision of a licensed extinguisher specialist;

(6) “Firm” means any person, partnership, corporation or association offering service and servicing of portable fire extinguishers or fixed fire extinguisher systems, including installation;

(7) “Fixed fire extinguisher system” means a device mounted to a permanent structure and containing powder, liquid or gases that can be expelled under pressure for the purpose of suppressing or extinguishing a fire;

(8) “Hydrostatic testing” means pressure testing by hydrostatic methods;

(9) “Portable fire extinguisher” means a portable device containing powder, liquid or gases that can be expelled under pressure for the purpose of suppressing or extinguishing a fire; and

(10) “Service and servicing” means servicing portable fire extinguishers or fixed fire extinguisher systems by charging, filling, maintaining, recharging, refilling, repairing or testing.