Section 3: Limitation of Application.

Nothing in this Act shall apply to—

(a) locomotive boilers belonging to or under the control of the railways;

(b) any boiler or boiler component, —

(i) in any vessel propelled wholly or in part by the agency of steam; (ii) belonging to, or under the control of, the Army, Navy or Air Force; or (iii) appertaining to a sterilizer disinfector used in hospitals or nursing homes, if the boiler does not exceed one hundred liters in capacity.]