(1) All elevators, manlifts or other lifting devices must be installed and maintained in conformity with the requirements specified in the Washington state elevator laws and regulations adopted by the elevator section of the department of labor and industries.

(2) Inspection of elevators, etc., for acid towers.

(a) Outside elevators must be inspected daily during winter months when ice materially affects safety.

(b) Elevators, runways, stairs, etc., for acid towers must be inspected monthly for defects that may occur because of exposure to acid or corrosive gases.

(3) Respirators on elevators. Elevators located in areas where exposure to potentially harmful concentrations of toxic substances may occur must be equipped with an adequate supply of respirators to protect the maximum number of passengers.