(1)In this Chapter—
“appeal tribunal” means an appeal tribunal constituted under Chapter I of this Part;
“Commissioner” means the Chief Social Security Commissioner or any other Social Security Commissioner, and includes a tribunal of three or more Commissioners constituted under section 16(7) above;
“relevant benefit” has the meaning given by section 8(3) above.
(2)Expressions used in this Chapter to which a meaning is assigned by section 191 of the Administration Act have that meaning in this Chapter.
(3)Part II of the Administration Act, which is superseded by the foregoing provisions of this Chapter, shall cease to have effect.