Section 20 of the principal Act shall be renumbered as sub-section (1) and--
(a) in sub-section (1) as so renumbered, for the words "lodge with the Chief Inspector an appeal to an Appellate Authority to be constituted by the State Government under this Act", the words "prefer an appeal to the Central Government" shall be substituted;
(b) after sub-section (1) as so renumbered, the following sub-sections shall be inserted, namely:--
"(2) Any person considering himself aggrieved by the refusal of an Inspecting Authority to grant a certificate of inspection of manufacture or erection, as the case may be, may, within thirty days from the date of communication of such refusal, prefer an appeal to the Central Government.
(3) Every appeal under sub-section (1) shall be made in such manner as may be prescribed by the Central Government.
(4) The procedure for disposing of an appeal shall be such as may be prescribed by the Central Government.".