(1) An Acknowledgement Certificate issued under section 5 shall, for all purposes, have effect as if it is an approval for a period of three years from the date of its issuance or till the date of commencement of commercial production or operation, whichever is earlier:
Provided that subsequent to the issuance of the Acknowledgement Certificate, the enterprise shall adhere to all the requirements for such approval:
Provided further that in case the enterprise fails to adhere to the requirements of the preceding proviso, action as required by or under the law may be initiated against the enterprise.
(2) During the period of three years or till the commencement of commercial production or operation, whichever is earlier, under sub-section (1), no Competent Authority shall undertake any inspection for the purpose of, or in connection with, any approval.