The Bureau shall review, periodically, at least once in five years, all established Indian standards to determine the need for revision, amendment, reaffirmation or withdrawal of such standards, in accordance with the provisions of these rules:
Provided that the need for withdrawal of the established Indian standard shall be decided upon by the respective Division Council on the recommendations of the sectional committee concerned:
Provided further that proposals relating to minor amendments or amendments in the nature of correction of errors or omissions in established Indian Standards may be notified by the Bureau without reference to the concerned Sectional Committee:
Provided also that the Bureau shall have the power to provisionally amend, by notification, such of the provisions of an Indian Standard as in its view are necessary for expeditious fulfilment of any of the objectives of the Act and the amendments so made shall be regularised without further notification if the sectional committee concerned has on examination, approved the standards as so amended, within a period of six months from the date of the notification.